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Archived: Reproductions and Motorized Bicycles

MOTORIZED BICYCLES:   Ban in Norwalk, Connecticut posted by: AviationMetalSmith on 12/31/2004 at 4:12:21 PM
A new law will fine you $99 and confiscate your motorized bike "if it doesn't meet State standards" in Norwalk, Connecticut.
The law is aimed at those new fangled Pocket bikes, but also anyything else. The Police will probably confiscate a cripple's wheelchair and leave him lying on the sidewalk if they get a chance.
I hope anyone in Norwalk CT who reads this is careful, like only ride at night on back roads.

MOTORIZED BICYCLES:   Evans Power Cycle Owners posted by: Mr. Wolfe on 12/27/2004 at 2:29:40 AM
Hello, I have just come across a huge collection of Evans Power cycle parts.Motors,Tank, allot of stuff and three complete Evans power cycles.Please contact me if you need parts...
thank you

   RE:MOTORIZED BICYCLES:   Evans Power Cycle Owners posted by Mark Zalutko on 1/10/2005 at 1:09:38 PM
Could you send me pictures of the Evans Powercycles and tell me what parts you have. Please send message and pictures to my hot mail account which is markz_1@hotmail.com
Mark Z

   RE:MOTORIZED BICYCLES:   Evans Power Cycle Owners posted by jeremy on 4/23/2005 at 5:01:43 PM
I just got a cutlass girls evans balloon tire bike and have no info on them do you?
thanx in advance!

MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by: E. Richardson on 12/13/2004 at 4:43:35 AM
I recently finished a Kingsmotorbikes 80cc installation on a Schwinn Stingray. The experience of motoring on something you've built yourself is awesome and the reactions of people have been pretty enthusiastic, especially the kids. The purists have been pretty hard on this bike, but its a lot of style and bling for the money, the motor makes it a complete package.

   RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by bart on 12/25/2004 at 12:02:04 PM
ive just bought a schwinn stingray in australia and im about to buy a kings motor bikes 80cc engine kit off ebay can you give me any tips on things i will need to buy other than the parts supplied in the kit, or any other problems i might have with the installation of the motor kit. how do you find performance (speed, acceleration).
thanks, bart.

   RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Edward on 12/27/2004 at 6:48:02 AM
In order to ease the installation, order an adapter kit from yeoldesalt.com aprox. $40 US. consisting of a 5" wide strip of 1/4" plate bent up at both ends to cradle the motor and a 4" length of chain. The simplicity of the kit put my bodging to shame. A farm equipment idler gear with the teeth cut down to fit a bicycle chain should be made (to replace the plastic tensioner pulley -it lasts about 20 miles) along with a slotted plate. Adjust the bits to fit the square tubing.Cut the fender for chain clearance with dremel. The chainguard breaks at the engine-reinforce and it still breaks. A hand choke makes things nicer. The cables- clutch and gas are shite. I'm looking to the local cycle shop for quality replacements. Top speed so far is 34 mph on the down hill 20 being a smooth cruising speed. The seat is torture after mile six although I'm growing used to it. The red loctite with a sheetmetal washerplate with tabs to fold over the 4 engine bolts are a must. The exhaust will eject at around mile 17 without red loctite. Torque the head bolts as instructed, oil seeps at the head gasket will warn you of impending doom,keep a 10mm wrench on the bike, funny noises are important so stop and look. Forty miles and counting, 17 today, a little chilly but fun.

   RE:RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Edward on 12/27/2004 at 9:29:07 PM
Also the stock ignition vibrates apart at the electode on the spark plug, solder on an auto style reciever and lug.

   RE:RE:RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Edward on 1/1/2005 at 5:22:50 PM
After concluding the "break in" of one tank of fuel at 20/1, I mixed a tank at the recommended 35/1 and set off for the next town. At aprox. five miles the air cleaner assembly ejected and the motor seized. Back at the drawing board, I filled the cylinder with oil and worked the piston free, with the idea that the aluminum of the wall would eventually hone to the will of the steel rings. Several hundred rotations later we're on the road again with a more conservative oil/gas ratio and I'll be extending the "break in" for another tank or two. I would also recommend a length of wire be added to your carry on tool kit.

   RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by B. on 1/6/2005 at 7:35:57 PM
I'm confused. You used a 20:1 ratio successfully, but when you changed to 35:1 the motor seized up? Doesn't 35:1 meant that you're using MORE oil than 20:1? Or is it the other way around? So what ratio do you recommend for everyday use, after the break-in period? Thanks. Oh, also, in a post above, you refer to a web site called "yeoldesalt.com" for an adaptor kit, but no such site exists. Is that URL correct? Thanks again.


   RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Edward on 1/7/2005 at 5:19:10 AM
The ratio refers to parts Gas (first number) to parts oil (second number) as the first number increases the second number decreases and vice versa. My apologies the web address is yeoldesaltmotorbikes.com. Google makes you jump through hoops of fire to find it. The break in recommended by Kings was one tank and then 30/1 to 35/1. I myself am sticking to the 20/1 mix for the time being, this being aprox. 6.5 oz of oil to 1 gallon gas in my rudimentary guestimation.

   RE:RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Edward on 1/16/2005 at 11:54:14 PM
Its been snowy and icy for weeks here in Kansas, but today there is only ice on the roads in spots and its warmed up to 18 degrees F. it seemed like a good idea to take the chopper out. After some major pedaling, it fired up and away I went. Although my mustache quickly froze over with ice and my eyes watered at speeds over 35, I made a run up the hill to the town cemetary at 31 mph. On the down hill run I got up to 48 mph before entering the 30 mph speed zone. What a rush! Next I'm doing some work on the an expansion tube for the exhaust.

   RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Brian on 1/25/2005 at 4:05:48 PM
Break in period is important. Do not operate at speeds above 15 mph or for more than 15 - 30 minutes at a time . Use the best quality " synthetic " 2 stroke oil .These motors vibrate and you need to keep checking all over your bike for loose nuts & bolts including the motor itself ! " Performance Improvement " Useing a dremel tool with a cerculer cut off wheel I cut the electrode tip of the spark plug creating a two prong tip , this causes the plug to have a more powerful dual spark .I also drilled extra holes in the air filter cap , this increases the amount of air going into the engine .All I can say is after I did this it kicked out more power & started alote easyer .

   RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by brian on 1/25/2005 at 4:19:58 PM
Oh yeah drilling holes in the air filter cap make it sound cooler to !

   RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Joe Holbrook on 2/1/2005 at 3:24:47 AM
The 60 and 80 cc motors are best avoided. I have built 2 bikes using the 48cc and they run great . One is a grubee the other is spitfire.The spit fire is a nicer engine, comes painted and doesn't leak oil as much as the grubee but they both run 30 mph on flat ground. You will want to replace the clutch and throttle with motorcycle type if you want looks and vibe dampening,and use red locktite on all bolts that you won't be loosening to adjust tension or clearance.Also, the motors over 50 cc require title and ins in most states!Take your time with your install and you will enjoy it more!

   RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Edward on 2/4/2005 at 3:47:37 PM
On a recent ride the motor seized permanently. With the top end removed there are no indications of problems, the bore is pristine as are the rings. Everything points to the bearing on the bottom end. So the motor is coming out. Perhaps Mr. Grube's "european bearings" are not such a bad idea, also would adding a couple of oz. of 2-stroke oil to the crankcase at installation have prevented this?

   RE:RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Edward on 2/16/2005 at 9:46:03 PM
Upon taking the motor apart I noticed that the needle bearings on the lower end rod had no collar or remains thereof. This would have resulted in too much clearance between the bearings and the connecting rod, I will know more when the replacement parts arrive.

   RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Cody on 2/20/2005 at 2:26:03 AM
We are building a Schwinn Stingray using the same kingsmotor 80cc engine kit, and we were having trouble getting the sprocket on the back tire. The sprocket hub is too big and blocks the screws from going all the way through. What did you do to get around this?
Thanks in advance

   RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Edward on 2/21/2005 at 7:45:15 PM
Not wishing to pay a machinist, I laid out a piece of carpet on a board, inserted a curved back file in the center of the sprocket and rolled it forward while pressing down. Eventually it gets big enough to fit over the the hub, then drill five holes between the spoke ends on the flange. Place the sprocket on the hub and use a pencil to marke the holes on the sprocket, drill and bolt.
I'm still waiting on the parts to arrive to rebuild the kings motor, and with good weather coming I ordered and recieved a Gru-Bee 49, then five hours labor and I'm back on the road. I'm using Blue Marble two stroke oil this time for luck and power.

   RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by matt on 2/23/2005 at 3:06:30 AM
I bought an 80cc kit a little while ago and I think I have set up the back wheel/sprocket wrong. I had the sprocket against the hub and then the screws going through the spokes. the problem was when i would go up a hill there was to much torque and my spokes broke under the stress. any suggestions please, please let me know.

   RE:MOTORIZED BICYCLES: 80 cc Schwinn Stingray posted by Cody on 2/23/2005 at 6:33:42 AM
I got the stingray up and running, the only problem I have with it now is that the throttle is stuck in the wide open postion. Is there any advice anyone has on getting it out of this position. I'm pretty sure I connected the cable to the carburetor right, but the instructions aren't too clear. I'm going to buy a new cable for it tomorrow. Hopefully that will fix it. I'll post an update on how it goes.

   RE:MOTORIZED BICYCLES: 80 cc Schwinn Stingray posted by Cody on 2/23/2005 at 6:35:56 AM
Sorry for the double-post, but I have another question. Does anybody know what it would take for the stingray with an 80cc engine to be street legal?

   RE:RE:MOTORIZED BICYCLES: 80 cc Schwinn Stingray posted by liquidplastic on 2/24/2005 at 2:16:31 PM
I can't imagine that would be legal unless there is provision in the law for some kind of speed restriction device

   RE:RE:RE:MOTORIZED BICYCLES: 80 cc Schwinn Stingray posted by Edward on 2/24/2005 at 9:58:42 PM
To be legal, it would require the whole moped treatment, lights,turn signals, etc. But in close comparison of the Skyhawk GT2 49cc. and the Kings 80cc. I could not percieve any major difference in the two, maybe the piston height? The flywheel of the Kings was stamped 49cc. Regardless keeping the speed under 35 and sane opperation would be the best avoidance.

   RE:MOTORIZED BICYCLES: 80 cc Schwinn Stingray posted by Cody on 2/26/2005 at 5:36:07 AM
Just posting an update on the bike, also I'm posting a picture with this. It's running great and goes faster than I thought it would. Everywhere I go people are turning their heads. I've ridden it to the next town taking the backroads with a friend driving his truck on the mainroads and we arrived at our destination at the same time. This has to be the best investment I've ever spent for the money. I can't wait to bring it to the local street cruises.


   RE:RE:MOTORIZED BICYCLES: 80 cc Schwinn Stingray posted by Edward on 2/26/2005 at 8:29:17 AM
Put some lube on the plastic roller tensioner shaft to reduce wear (plastic on metal isn't pretty at max rpm) I went with a steel idler gear, after the roller broke down from heat exhaustion and stress.

   RE:RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by matt on 2/27/2005 at 9:57:23 PM
Please help me. Short of welding the sprocket to the rear hub I can't think of how to assemble the rear of the bicycle to with stand the stress on the spokes themselves. How did you guys do it?? Please any help is appreciated.

   RE:RE:RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Edward on 2/28/2005 at 9:48:59 PM
On the Stingray the hub flange is large enough to drill holes between the spoke ends, I kept it to five holes to avoid weakening the structure. I haven't encountered anywhere near sufficent torque to stress the flange.

   RE:RE:MOTORIZED BICYCLES: 80 cc Schwinn Stingray posted by Dave on 3/6/2005 at 10:22:36 AM
I'm in the midst of building 64 scwinn traveller with an 80cc kingsmotor on it, for wheels I got a set from gru-bee that had the sprocket bolted directly to the extra large flange hubs, I saw on ebay that this guy had milled up some adapters that would do the same for the new stingray wheels. I can't speak from expierience about the adapters, but I love the wheels I got from gru-bee for my bike.

   RE:RE:RE:MOTORIZED BICYCLES: 80 cc Schwinn Stingray posted by Edward on 3/8/2005 at 3:04:51 PM
What site did you get the gru-bee wheels from? Most of the adapters I've found are one-offs from guys with milling machines, none seem to be for sale yet. Heck just a properly drilled (American spacing)sprocket could make this rear wheel problem much easier.

   RE:RE:RE:RE:MOTORIZED BICYCLES: 80 cc Schwinn Stingray posted by Edward on 3/11/2005 at 5:49:54 AM
The Kings parts are still on their way, And the break in of the Gru-Bee continues, I'm about half way through the first gallon. I can squeeze in about three miles most mornings before I have to go to work, though the temps are staying in the forties. The bike doesn't fit in the Nissan Pathfinder and the Ford 3/4 Ton Van sucks too much gas so its been staying at home until a bike rack appears on the back of the Nissan. This engine is much more civilized than the Kings, much less vibration and bike/motor parts are not flinging themselves off. Power is less but if the break-in bonus pays off, then its a trade I can live with. The Bell comfort saddle is truly one of the best features I've added, a suspension on one end or the other would be the cats' pajamas.

   RE:RE:RE:RE:RE:MOTORIZED BICYCLES: 80 cc Schwinn Stingray posted by Edward on 3/14/2005 at 6:17:26 AM
Upon perusing the bikerodnkustom site, I found that due to my factory paint and stingray decals, my bike doesn't qualify and at the schwinn heritage site, the motor disqualifies my welcome, my answer to a question about motorizing was deleted, as was the question. Perhaps a place for these particular motobikes should be created? On another front, I got 20 miles on the bike over the past two days with a combination of in town stop-n-go and kuntry kruisin on the gravel roads. Riding on gravel is unnerving at times but treated with respect, makes for a bumpy kind of serentity on the Kansas prairie.

   RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by corey on 3/18/2005 at 8:15:07 PM
check out www.peninsulacustomcycles.com for pics of my badass stingray chopper!

   RE:RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Edward on 3/21/2005 at 5:00:10 AM
Those tripletrees are awesome, where can they be found. I've got the Boa wrestled onto the 20 x 1.75 but the tripletrees
have me stumped. They resemble the mini-chopper forks, are they the same? What modifications have to be done to make them fit the Stingray

   RE:RE:RE:RE:MOTORIZED BICYCLES: 80 cc Schwinn Stingray posted by Texas on 3/24/2005 at 10:38:11 PM
Anyone ever put one of those 80cc's onto a regular 20" stingray lowrider?


   RE:RE:RE:RE:RE:MOTORIZED BICYCLES: 80 cc Schwinn Stingray posted by Edward on 3/26/2005 at 6:53:12 AM
They have a 49cc in the photo gallery/custom section at mopedarmy.com. If thats a 60's original bike, I would suggest you find another project, if its a re-pop fold, spindle, and mutilate to your creative limits.

   RE:RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Tom on 3/26/2005 at 11:09:48 AM
Hey Edward, I've already got the kings 80cc motor and the yeoldsalt motorbike mount, would you have any tips or advice to give to me about installation? Just starting out.. Any help would be great! cheers

   RE:RE:MOTORIZED BICYCLES: 80 cc Schwinn Stingray posted by liquidplastic on 3/27/2005 at 4:24:49 PM
I've slapped the 80cc kings kit on a older style mountain bike and it's been a reasonably good fit. Only thing i've had 2 machine was the rear sprocket (the center hole wasn't big enough 2 fit flush against the spokes). Other probs i've found have been exhaust header clearance (around slightly fatter frames it touches the downtube) and i've had 2 bend / hacksaw off the bolts on the downtube mounts 2 get around the fatter tube. It's hell fast when it's set up but can b a pain if u don't have a suitable bike!

   RE:RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Tom on 3/28/2005 at 2:38:59 AM
Oh ok thanks.. well I am mounting it on to my stingray

   RE:RE:RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Edward on 3/28/2005 at 7:20:25 AM
Look at every photo you can find of these bikes for mounting location, I made mine fairly far forward with the bolt holes on the center line. Also BMX style wheel tensioners, the cheap ones will be worth every penny and then some. Email me direct if you have any issues or questions, I'll be glad to help.

   RE:RE:RE:RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Edward on 3/30/2005 at 4:54:40 AM
Both master links failed in the past week. The first time I was not far from a Town & Country hardware store. They do not stock a direct replacement but have a pack of 4 for $3US that have a longer stud. I stacked one of the extra links on top to take up space under the clip thus giving double strength to the master link (at least on one side). The extra width is not an issue on my bike so long as the clip faces out. I should have replaced the other master link then but was in a hurry and so had to do it today while on a ride around one of the local lakes. Find some of these for your emergency kit or you will regret it

   RE:RE:RE:RE:RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Edward on 3/31/2005 at 5:11:06 AM
I recently purchased an expansion chamber from the local cycle salvage yard for way too much money, but its for the Stingray, so it had to be purchased. It came from a Honda dirt bike and was the smallest I could locate. In order to make it fit, I had to section it with a dremel, rotate the sections and weld it back together. Once it was on the bike there is quite a difference in exhaust note, especially without the spark arrestor. Accelleration is quicker with a higher top end. In addition the exhaust gasket has survived several removals and shows no sign of blowing like its predecessors.

   RE:RE:RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by darin on 4/2/2005 at 8:53:11 PM
Can anyone out there tell me how they mounted their gas tank? The hardware I received will not work on a Stingray with the reinforcment on the stear tube portion of the main triangle.

   RE:RE:RE:RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Edward on 4/3/2005 at 2:15:19 AM
The front bracket is unusable so it falls to the rear bracket to be the sole connector. This is the common and only solution that I have seen so far.

   RE:RE:RE:RE:RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Edward on 4/4/2005 at 8:53:20 PM
Yesterday I decided to try to modify the engine (ala Kreidler) and shaved 5mm off the intake side of the piston. The difference was not noticeable although the CDI unit failed after a 32 mph. pass and may have affected the top speed. Some cleaning of the ports and a larger carb may be needed. Also the vibrations ejected the following parts: rear brake pivot bolt, CDI unit, air cleaner cover (cracked at the bolt),air cleaner element, and associated hardware.

   RE:RE:RE:RE:RE:RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Edward on 4/9/2005 at 5:13:24 AM
With the construction of a new bracket and the addition of an Accel Super Stock 8 mm plug wire, the CDI unit is safely attached to the frame beneath the seat. A replacement carb w/ the new improved steel breather has been installed, seals-all added to the valve tank junction and 3/8 rubber fuel line run. The carb choke handle was drilled and bent for the hand choke attachment and loctite put on the float bowl screws( No Buddist protests for me.). The bike fired right up but is still stuck at the 30 mph. mark, the speed will come, I've just got to get it all sorted out.

   RE:RE:RE:RE:RE:RE:RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Edward on 4/11/2005 at 4:50:28 AM
Today in the never ending quest for speed,I added 3 oz. of Ace Hardware Lacquer Thinner to a full tank of fuel. Nothing happened for the first five minutes or so, then as I pulled up to a stop sign the idle shot up and had to be adjusted back down. It seems a little more peppy and top speed went up one mph. Then I removed the Honda expansion chamber and fabricated a smaller one using the muffler that came w/ the kit.It was sectioned and gutted with a new rear cone. A baloney cut rear pipe completes the look. It was raining and dark so full speed tests have to be delayed, however the exhaust note is awesome, full and robust, something like a Harley dirtbike.


   RE:RE:RE:RE:RE:RE:RE:RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Edward on 4/11/2005 at 2:02:50 PM
Well back to the drawing board, the exhaust while loud and full, is not a performance enhancement. Top speed 23, I'm sure it has to do with the lack of back pressure. So the Honda X-chamber will go back on while the Harley pipe gets some restriction. On a side note, the louder exhaust did get the attention of a little old lady who was about to pull out in front of me, maybe louder exhausts do save lives.

   RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by justin on 4/12/2005 at 11:38:04 PM
i just bought a moterized bike that is like the old whizzers and it has a kings motor on it and i was just wondering if all of their motors are two stroke or if they have a four stroke motor too.

   RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by justin on 4/12/2005 at 11:40:42 PM
i just bought a moterized bike that is like the old whizzers and it has a kings motor on it and i was just wondering if all of their motors are two stroke or if they have a four stroke motor too.

   RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Travis on 4/13/2005 at 11:40:13 PM
I just bought a Schwinn Stingray, and A kingsMotorbike 80cc engine, will I have any problems putting the engine on, when I get it?

   RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Edward on 4/18/2005 at 2:17:26 PM
The motormount kit from yeoldsaltemotorbikes.com is a good starting point, however their site is sometimes difficult to get to for reasons unknown.Heres their ph#


   RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Edward on 4/20/2005 at 3:53:55 AM
The Kings engines are to the best of my knowledge all two stroke. This can be determined by the crankcase oil and the fuel mix. The 2-stroke will have no crankcase oil and need a gas/oil mix for lubrication. The 4-stoke will have crankcase oil and take straight gasoline. The early Kings motors can be distinguished from the later ones by their being in one piece and the fact they will still run.

   RE:RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Edward on 4/28/2005 at 4:26:39 AM
Last Sunday I took the Stingray on a thirty mile ride, the little Gru-Bee roared through the Harley pipe at 20 mph. for most of the way with the last five miles done at 30 mph. The only part ejecting was an exhaust stud and nut, a new record!I've decided to install a 32 tooth rear sprocket (thanks Simpsonmotorbikes!)for easier cruising at speed and I've ordered the 55cc. hop-up kit (Dennis Foster -Gru-Bee) to make up for the loss in off the line power.

   RE:RE:RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Edward on 5/2/2005 at 2:19:44 PM
On Saturday April 30, 2005 I competed at the Lake Garnett Motorcycle and ATV Field Day event. Due to the classes available and my Stingray not being a factory bike, I was placed in the 250 ATV Modified class. Never the less I endeavored to to my best and represent the Motorized bicycle to the public. The Gru-Bee engine didn't let me down and I had a great deal of fun.


   RE:RE:RE:RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Edward on 6/1/2005 at 3:26:04 AM
With the addition of a 32 tooth rear sprocket to the 55cc kitted engine has resulted in a top speed of 42 mph. More work remains to done w/ jetting and a few mor mods so I can close on the Half-Ton.

   RE:RE:RE:RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Stan on 7/30/2005 at 10:31:57 AM
Edward, How the heck did you open the krankcase?

Installed the kings 80cc on an old mountainbike.
half way through 2nd tank the throttle got stuck on full.
managed to fix it on the road but it caused something to come loose and ping around in the engine.
pedalled home and took it apart and shook a rivet out of the crankcase.

   RE:RE:RE:RE:RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Edward on 8/3/2005 at 8:21:18 PM
By carefully slicing the gasket around the circumference, then gently prying very gradually working around the edge. Inserting a screwdriver too far in will damage the lip around one half so don't do it.

   RE:RE:RE:RE:RE:RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Edward on 9/7/2005 at 4:12:06 AM
The Stingray is still going strong, one of the motor bolts broke off in the case and now sports an equally broken ez-out tool in its center. I gave up and drilled/tapped another hole in the case. The yeoldesaltemotorbikes motor mount was allowing too much movement with its wide bolt slots, so I welded washers over the slots in the correct positions. I recently made two trips totalling 32 miles on my bike without incident. My ride to work this morning revealed that cans of Pepsi and gravel road motorbiking lead to exploding cans. The return ride featured the ejecting Bell Bicycle Headlight, which blossomed into many pieces of flying plastic,batteries,and a small bulb. A more durable means of securing the headlight should be designed. The brake design of the Schwinn Stingray is not very effective at functioning when combined with the inherent wobble of the four inch wide rim. The brakes must be backed off to not drag and then must be tightened in order to slow the bike. Even with the addition of a small bungee cord to assist the laughable return spring assembly, it still drags and I must use my feet ala Fred Flintstone to slow down.

   RE:MOTORIZED BICYCLES: 80 cc Schwinn Stingray posted by nintiendo.com on 10/26/2005 at 9:55:29 PM
I have the kings motor bikes 80cc. It's a great toy, goes over 30mph, but it is very unreliable. The gasket between the bottom crankcase halves leaks massive amounts of fuel vapor. It vibrates so much that both bike fenders and the motor chain guard broke from metal fatigue. Really dangerous! I just added 8 cable ties to the front bike brake, since its bolt broke in half!

   RE:RE:MOTORIZED BICYCLES: 80 cc Schwinn Stingray posted by Edward on 11/20/2005 at 7:10:59 AM
If its leaking from the engine crankcase, the engine will be in a lean condition and will seize shortly. If its an Exhaust leak not so bad, leak anywhere else is very bad. Repair at the earliest possibility.

   RE:RE:RE:MOTORIZED BICYCLES: 80 cc Schwinn Stingray posted by Edward on 12/14/2005 at 4:42:37 AM
After the recent snowstorm dumped a good six inches, encouraged by a friend who was braving the elements on his Honda scooter, I attempted to start the Stingray in the snow. The physical effort combined with balancing on snow and a balky engine made it quite improbable that combustion would occur. After laying it over for a final time, I bid my friend goodnight and parked the Stingray to await more congenial weather conditions. Come on Spring!

   RE:RE:RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Dan on 12/14/2005 at 3:43:28 PM
3 months ago i put a kings 80cc kit on a brand new stingray. it is awesome fun and sometimes transportation in my little town. I have added steel gussets to the rear forks and seat thes and more welding topped with gloss black spray paint have done wonders for the stability of my bike. I cut the muffler off and ran the exhaust out the rear with electrical conduit. The many tricks i read on this page have helped me alot in the building process. though i have to say if you realy line the motor up right with regular maintainance you can put over 200 miles on the plastic roler assembly. my original is still rolling strong. I hahe also added 5 inch rise handlebars, Spedo kit and a 26 inch wheel on the front, it realy rides like a chopper. good luck to all with this project.

   the carb posted by jake on 12/16/2005 at 9:59:28 PM
just joining hoping to learn lots from you guys cuz i don't have a head for this stuff. but i thought id reveil what i know about the carbeurator for those confused ( I was for like a week, those directions can be bogus).Anyway you have to run the cable all the way through that brass chamber to the the back by removing the little circular thingies and sliding it through the slot. (all you smart people are grimacing but this stuff isnt easy fer all of us.)hope this helps but it probably won't. anyway i think it would be awsome if somebody whose mastered this stuff ( like proper assembly) could make a little checkilist of things to consider for all of us confused ones who don't know better so we don't waste our precious monies.

   RE:80 cc King's Engine Kit posted by Edward on 4/14/2006 at 5:31:06 AM
Well I made the 101 mile journey to Galesburg KS, along with my friend Bryce. He rode his Stingray that I built for him last year, he has been modifying it since (hence the car stereo). Heres the address for the movie
Hope you like it.

   RE:80 cc King's Engine Kit posted by Edward on 4/21/2006 at 12:09:13 PM
My Motorized Stingray recently experienced bearing failure on the right side of the wheel. The inner bearing race detached and retired to the inner hub. Faced with buying a new bike for the rear wheel or fixing it somehow, I went with the somehow. Purchase :
1. TRU-PITCH pump bearing #6202ZZ 15mm,
2. HILLMAN Sleeve Bushing Bronze 3/8x1/2x1 #838643
3.HILLMAN SleeveBushingBronze 1/2x5/8x1-1/8#838644
Use hand grinder or Dremel on the exposed inner threads
of the sprocket, do this gradually to fit, 4 threads deep. Tap the small bushing into the large one, use a table grinder to reduce the bushing to fit the bearing, don't forget to leave a shoulder so it doesn't go all the way in. Cut to fit for length. Good so far to 32 mph. and smooth.


   RE:the carb posted by Edward on 1/29/2006 at 5:03:58 AM
"Carburetor" as the old joke goes, is French for "Don't #### with it." They are best approached with a diagram in hand. The Stingray is still going strong, as are all the other Gru-Bee engined I've built. I'm thinking of doing a pilgramage on the Stingray to the site of the Shaw Motorbike Co.(1905-1926) in Galesburg, Kansas to commemorate 101 years of motorized bicycles in Kansas in the Spring. The weather here has been extremely rider friendly, so I'm racking up the miles.

   RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by steve on 2/3/2006 at 5:54:55 AM
I've set-up 2 bikes now with the Kings 80cc. My first was a re-pop 55 schwinn cruiser deluxe. My latest a Felt 1903-which looks awesome but hasn't been run for more than 1 mile. My buddy is a retired machinist and he fabbed some motor mounts which make it possible to mount to the larger tubes. My initial engine was a 60cc, which seized and after removing the barrell I was able to release it and run it another 60 miles before it started making some pretty horrible noises then boom. I replaced it with the 80cc and have about 5 miles on it. I'm going to stick with the break-in gas oil mixture and see what happens. I'm fairly convinced that these motors won't last long under hard running. Taking it easy, on the other hand, isn't nearly as much fun. My next project will be the Felt MP-another eye-catcher, but we'll see about reliability.

   RE:RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Edward on 3/1/2006 at 6:20:42 AM
Watch out for those red intake gaskets that come with the kits, they dissolve into a peanut butter goo and that causes the fuel mix to go lean and your motor will seize. Use automotive grade gasket material (green or black)and cut your own, its much safer.

   80 cc King's Engine Kit posted by Nathan on 3/16/2006 at 8:41:49 AM
I bought an 80cc kit from King's Motor Bikes from eBay. I have been very happy with it so far. I put the kit on in the first week of last October and have already put nearly 600 miles on it. I installed it on a Dynoglide beach cruiser with a springer fork. Only parts of the kit I didn't use were the clutch lever and cable. I got high quality dirt bike parts from the Yamaha dealer, and fabricated the mounting bracket to connect to the engine.

I do have to tighten all the nuts at least every other week. The exhaust gasket blew at about 400 miles. I noticed that the engine actually started making more torque when it blew, and went up hills 3 or 4 mph faster with the leaking gasket, I guess because of less restriction, though the top speed is limited by the rev limiter. I put a new gasket on last week. The engine is making a lot more power now that it is worn in than when it was new. My top speed with the 44 tooth rear sprocket is 34 mph, and I get about 115 mpg, on hilly roads, driving 6 miles daily.



   RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Mike on 4/30/2006 at 4:51:47 AM
I'm looking into getting a King's motorized 80 cc bicycle can anyone give me the pros/cons of this companies bicycles? Thanx to all

   RE:RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Edward on 5/6/2006 at 3:20:01 PM
My experience w/ the Kings motor is detailed in this post (Con) Go Grube! The Stingray is well suited to motorizing, the rake of the front forks makes it very stable at the upper speeds, other bikes w/ less rake are twitchy in comparison.

   RE:MOTORIZED BICYCLES: 80 cc Schwinn Stingray posted by Alex on 5/20/2006 at 7:49:48 PM
Texas has mentioned earlyer about mounting one of the King's 80cc engines on the classic stingray bikes. Well, I happen to be doing just that and have made quite a bit of progress so far. The bike itself is a 1975 or 6 and was originaly lemon yellow, I picked it up at a local goodwill and broke the bank at 8$ Having one of those 80cc kits laying around for nearly a year it was the first thing in mind. The bike itself is coming together from a number of bikes I have. The rims are from an early 90's redline bmx while the throttle controlls will be from an old italian motorized folding bike I had laying around (very nice quality.) Its a work in progress so far, I'll make sure to keep you all updated.


   RE:MOTORIZED BICYCLES: 80 cc Schwinn Stingray posted by Alex on 5/20/2006 at 7:51:49 PM
And heres an idea of how tight it fits.


   RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Dan on 6/14/2006 at 6:13:12 PM
Has anyone added a rechargable battery to the white wire to run lights and other electonics Horn Signals and such. If so I would like to hear of their success or failure. My bike is not a chopper but it is Hot, RED HOT!!

   RE:MOTORIZED BICYCLES: 80 cc Schwinn Stingray posted by seth on 6/23/2006 at 12:27:43 PM
anyone have any problems with the intake gasket? mine dissolved and i've tried making a new one out of gasket material from an autoparts store, but the only way i can keep it running is with the choke all the way on, and even then i cant give it any throttle. it just dies out when i give it throttle. any suggestions?

   RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Jo on 7/14/2006 at 6:03:59 PM
Guys I read your posts with interest. I have a skyhawk 48cc on a MTB - commute 60km a day & have about 3000 or kms on the motor. Only major problem to date is that the plastic idler disintergrated at speed - luck I was suspicious of it & was carrying a spare for a road side repair. I am averaging 27 kms per hour - standard - I pedal alot though (:. Overall I find the motor primative but functional - daily general tightening required - not impressed with adjusting the chain daily - I really need to turf the idler & shorten the chain. I see u guys have higher output motors but I will not be buying another till my little one RIP's - however it is still going strong (:. I do have one question though..does any one know excatly how these units are governed??? Theres more power in a 48c 2 stroke that I know - but I have not figured out how they have "tamed" the motor, Any help would be great. Nice to see I am not alone with playin with these set ups lol.

   RE:RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Edward on 8/13/2006 at 12:21:48 AM
Seth, your gasket is not sealing, don't run it like that. I find that the green gasket material works fine, make another and tighten it correctly so it seats. Jo, the design of the intake and exhaust limits the motor. Casting flash, mismatching of the ports, and low compression does the rest.

   RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by tracy on 8/18/2006 at 9:02:47 PM
I've read Nathan's entry. I wonder if you are having good luck because/if your set up is absorbing more motor vibration than anyone else's. And were the only high quality dirt bike parts you bought the clutch lever and cable or were there other dirt bike substitutions which helped? Also, does anybody know whether or not changing the rev limiter will have a detrimental effect on the engine? I'm thinking of buying the 80cc, but some people I've spoken with think a two cycle isn't really meant to go on and on for hours without burning up--eight hours per day on an extended trip, for instance. I'm not really encouraged by much of what I've read here.

   RE:MOTORIZED BICYCLES: 80 cc Schwinn Stingray posted by Jim on 8/24/2006 at 1:04:57 AM

   RE:RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by tracy on 9/30/2006 at 9:03:54 AM
also, has anyone tried pulling any weight on a bicycle trailer with one of these engines ? I burnt out 2 40cc engines doing that sort of thing.


   RE:RE:RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Edward on 11/6/2006 at 10:31:28 PM
a trailer will just be another stress factor on the life of the motor. The lower end bearings on the Stingray continue to be the weakest link, engine #3 seized while trying to keep up with some Moped Army guys on a long ride from Shawnee to Lawrence Ks. more R & D to come.

   RE:RE:RE:RE:RE:MOTORIZED BICYCLES:   80 cc Schwinn Stingray posted by Edward on 12/10/2006 at 4:21:33 PM
Well I took out the old 80cc. Kings which has been in pieces for two years awaiting the spare parts that never came and started rebuilding it. The flywheel bearings were replaced with RBI 6202-2RS\C3 w/ the seals picked off. The bearing seats must be enlarged and deepened for them to fit.The needle bearings for the connecting rod are not available and the rod axle was shot, so a craftsman socket of the proper diameter was cut to length and I poured a 19th century style babbit bearing, which was then oil grooved and surface-laced with an ice pick. All of this was done with hand tools, except for a drill press used to plane the babbit bearing excess off. The engine was installed on the Stingray and ran around the block today. An exhaust system with a muffler needs to be fab-ed up before I do more testing.

MOTORIZED BICYCLES:   retro racers 1900s posted by: sam on 11/22/2004 at 1:04:37 AM
hello ,
i thought some of you would be interested in early 1900s board track racer replicas, check out www.firebikes.com under mayday frames they are their, enjoy..sam


FOR SALE:   SMITH MOTOR WHEEL auction tonight posted by: Ray on 11/12/2004 at 3:59:51 PM
No reserve,


Or auction # 2283227067

For photos...



MISC:   Larz Anderson National Bike Show posted by: Peter Naiman on 11/11/2004 at 3:51:33 AM
Just a short note. The Larz Anderson National Bike Show will be held on Sunday August 14th at the Museum of Transportation at Larz Anderson Park in Brookline, MA.
Set up time will be at 9:00AM, with show times between 10:00AM to 2:00PM. There may be a swap meet held independently of Larz in+ Watertown on Saturday the 13th of August, with the show the following day. Further information on the show events and the possible swap to follow in further postings. If you wish to be added to our mailing list or are interested in a swap space, please email me at hetchinspete1@yahoo.com.
Thank you, Peter Naiman

AGE / VALUE:   Electric Bike posted by: AviationMetalSmith on 10/31/2004 at 2:51:07 PM
I bought a used (two year old) Lafree electric bike. I usually post in the custom lowriders HPV recumbent etc forum, but this is a motorized bike. People have told me for years that my custom bikes look like motorcycles and therefore should have a motor.
If only the Lafree looked as much like a motorcycle as my homebuilt.


MOTORIZED BICYCLES:   Travis bike motor posted by: Bruce on 10/13/2004 at 4:45:56 AM
A friend of mine just bought a "TRAVIS" bike motor on a bike. He can't find any info on the Travis motor. He wonders if anyone has heard of this and also if anyone knows the proper spark gap and the correct oil/gas ratio. He wonders what were the production years for this motor??

   RE:MOTORIZED BICYCLES:   Travis bike motor posted by George on 10/18/2004 at 1:30:17 AM
I believe the Travis engine was built by "Power Products"? and also used as a twin version on the Monark Supertwin. I had an ST in 1949 so I emagine the Travis falls in the same era. 1949-1954? And maybe I'm totally wrong.

   RE:MOTORIZED BICYCLES:   Travis bike motor posted by Larry Wlos on 10/29/2004 at 8:41:36 PM
I have a manual on this motor

   RE:MOTORIZED BICYCLES:   Travis bike motor posted by Larry Wlos on 11/18/2004 at 2:40:04 PM
I now have copies of the manual

   RE:RE:MOTORIZED BICYCLES: Travis bike motor posted by Joey on 11/24/2004 at 1:49:04 AM

I would love to get a copy of the manual! Let me know what I need to do.



   RE:RE:RE:MOTORIZED BICYCLES: Travis bike motor posted by Larry Wlos on 11/24/2004 at 6:47:51 PM
Joey send me e mail ,let's talk.

   RE:RE:RE:MOTORIZED BICYCLES: Travis bike motor posted by Larry Wlos on 11/24/2004 at 6:49:27 PM
Joey call Larry at 708 267 0285

   RE:MOTORIZED BICYCLES:   Travis bike motor posted by Gary Boivin on 2/16/2005 at 10:41:26 AM
I have a July issue of a 1956 Popular Science that has a full page ad on page 8 for a Travis Bike Motor. I've been keen on this ever since I saw the ad and this is the 1st time that I hear someone talk about this bike motor --- I'd like to own one.
The ad states that the motor is made by:
Travis Products Co.
224 West Huron Street
Chicago 10, Illinois

   RE:RE:MOTORIZED BICYCLES:   Travis bike motor posted by Joe Bremke on 5/9/2005 at 3:15:23 PM
Gary, I have a Travis bike motor SN # 5509. This motor was used by my Father in the late 40s. I always moved it around in the basement when I lived at home having to keep the basement clean. Dad saved every thing he thought was of value. Dads gone now. The motor is in good condition, but missing fuel tank.
If your interested send me a line.
Thanks, Joe

MOTORIZED BICYCLES:   victoria fm38 posted by: Keats carleton on 10/10/2004 at 3:42:38 PM
How many teeth does the vitoria fm 38 driven sprocket need (the one on the wheel)?

MOTORIZED BICYCLES:   Smith Motor Wheel posted by: Marty W on 10/3/2004 at 3:59:25 AM
I am looking to add a Smith Motor Wheel to my collection of Bicycles. How much do these usually go for and how rare are they? Are there any discussion groups that deal with these? Thanks in advance for any info.

   RE:MOTORIZED BICYCLES:   Smith Motor Wheel posted by Brian on 10/5/2004 at 3:48:10 AM
Be prepared to spend a bunch of money. You will see incomplete motors for around $1000. Most are missing the magneto and the wheel assembly. Both are very hard to find. A few almost complete Smith or Briggs sold on ebay for over $3500.00 Even if you do find a motor you still need to find the controls and mounting brackets which are hard to come by also. When you do locate a motor wheel, examine the hub and shaft the flywheel is on and also the hub and shaft for the driven wheel. Both are weak points and are usually cracked and wallowed out. If you find an extra one, I am looking too. I have a 1917 Dayton Motor Wheel, made by Smith but replaces the front wheel unlike the Smith. Check out my website: http://oldbike.homestead.com/

   RE:MOTORIZED BICYCLES:   Smith Motor Wheel posted by Ron Hartman on 10/20/2004 at 8:41:06 PM
My Dad (in Virginia) had a Smith Motor Wheel Flyer when he was about 15 years old in about 1922 - with four 20 inch spoked bicycle like wheels on a buckboard with the Smith Motor Wheel mounted on the rear - motor raised & lowered with a leaver between the (2) seats - Flyer was made by Briggs & Stratton - My Dad had me to try to sell this Flyer for him in about 1990 - The motor was complete and did run. I found a buyer in CA and sold it to him for $1,350.00 plus shp. (it was taken apart and shipped in 4 different boxes by UPS) - It still had the original manual with the Flyer (I did make a copy of the manual, and still have that). Just a little information that I thought that you may be interested in - Popular Science had a article in it in the 1960`s stating that it was only 7 of the Flyers known to exist.

   RE:RE:MOTORIZED BICYCLES:   Smith Motor Wheel posted by Ray on 10/22/2004 at 3:23:47 AM
I had a gas tank for one of these kicking around my garage for about a year and recently sold it on ebay for around $600. I then spotted the engine at a recent car swap in a pile of stuff and bought it. Will probably re-sell it after I clean it up a bit. It is quite intact and the flywheel turns. Look for it on ebay in the near future as I have no need for it. May post a photos here soon also.


   Now on ebay posted by Ray on 10/26/2004 at 6:30:11 PM
I have it posted on ebay under the following link.



AGE / VALUE:   motocross pedal bike sears posted by: jason on 9/23/2004 at 5:37:36 AM
I have recently picked up and old guessing around a 70's Sears Motocross Pedal Bike. I got it from a dump and it looked cool. i brought it to a bike mechanic to see if he had any crank arms for it which he didnt but he wanted to buy the thing off me like 30 secs into describing it. i need some info on this bike but i cant even find it. i have found something that looks like it but it isnt exactlly it but close. if you know of what this is, worth, or any info at all email me at red__neck@hotmail.com(two underscores). i will add the pic of the look a like. i didnt want to chop it up and make it into a chopper before i knew if it was restoring. thanks jason


AGE / VALUE:   SAT.SEPT18TH IRON RANCH SWAPMEET VANCOUVER,WA. posted by: jon in desmoines on 9/19/2004 at 3:23:55 PM

MISC:   testing posted by: Vin on 9/11/2004 at 1:31:56 PM
Testing picture upload


   RE:MISC:   testing posted by Vin on 9/11/2004 at 1:33:39 PM
testing reply


   RE:MISC:   testing posted by VVVintage Vintage Bicycles, Inc at OldRoads.com on 9/11/2004 at 1:35:06 PM
You can now add pictures to your messages.


   RE:MISC:   testing posted by brian on 9/14/2004 at 2:51:02 AM


MOTORIZED BICYCLES:   Motorizing a bike posted by: Howard on 8/28/2004 at 6:19:00 PM
I'm trying to put a motor on a bike. I have too choices. One is a two-cycle McCulloch engine of about 90 cc's. That's about all I know about it, but my son started it once and said it was a "screamer." The other is a Maytag model 72, vintage 1947, 5/8 hp, two cylinder washing machine motor. This one is best described as a "smoker." The main problem is getting the power to the wheel. I've seen belts, rollers, and chains. The roller looks simple. Where do you buy stuff like that?

I'm only looking for about 15 mph.

Also what kind of bike works best?

   RE:MOTORIZED BICYCLES:   Motorizing a bike posted by Brian on 8/28/2004 at 6:39:46 PM
The Maytag does not have a throttle or means to vary the speed so it is designed to run at a constant speed, not a good choice. For the time and money involved you would be better off buying one on the bicycle motor kits being sold on ebay.

   RE:RE:MOTORIZED BICYCLES:   Motorizing a bike posted by JimW. on 9/6/2004 at 7:22:45 PM
The Maytag is also a collector's item, in addition to being heavy and bulky. I agree with Brian on using a dedicated bike engine.

I had one of those Maytags when I was a kid, and really loved it; but I was never able to successfully use it on a bike. Sure wish I still had it though. My mom gave it away when they tore the barn down, along with the rest of my engine collection.

There are societies devoted to engines like that. People spiff them up, mount them on really nice bases, and take them to meets to show them off. People stand around and watch them run. Not the same thrill as riding motorbikes, but to each his own.

AGE / VALUE:   Speigal airman posted by: Larry Wlos on 8/9/2004 at 5:35:43 PM
Looking for information or brochures on Speigal Airman motor bike,any information or help.

   RE:AGE / VALUE:   Speigal airman posted by Jeff on 8/23/2004 at 9:43:49 PM
Speigal Airman was very similar to Laray powercycle. Heard of Airman selling at Portland meet this year for $2500