MISC:   90/91 Schwinn World sport 12 speed posted by: Rockin Ron on 10/17/2007 at 4:09:25 PM
My schwinn is still in top shape but i moved to the mountians. this bike is geared for flat land. it has Sugino MP110 crank set. 52 and 40 teeth gears. looks like it has mount for a third sproket like 22 teeth. Does anyone know if i can add a third smaller front sproket?
Shimano SIS shifters and derailers.
by: 69.131.244.36


   RE:MISC:   90/91 Schwinn World sport 12 speed posted by ken on 10/18/2007 at 11:19:54 AM
I've done it. Front derailleur takes some finagling, to go in that far. Read Sheldon's remarks on chainline. And if you run into complications, take a Sugino triple, 46-36-26 for example, and try that.
by: 209.7.150.163

   RE:MISC:   90/91 Schwinn World sport 12 speed posted by Dave on 10/19/2007 at 5:48:39 AM
I put a Dura-Ace on my Trek 500, and ran a 53/39/26 for the mountains (11-28 in back). I was able to take it up SnowBowl road in Flagstaff. 7 miles of up hill with a 2000 foot gain. Not all derailleurs will handle big tooth differences.
by: 67.72.98.45

   RE:RE:MISC:   90/91 Schwinn World sport 12 speed posted by Ron on 10/19/2007 at 7:18:38 AM
Thanks Ken I reall still like this bike and did not want to get rid of it. If i can modify it so i can ride it in the mountians of south east tennessee that would be great.
by: 69.131.244.36

   RE:MISC:   90/91 Schwinn World sport 12 speed posted by Ron on 10/26/2007 at 4:18:05 PM
Hey Ken, Can you tell me what issues you ran into when adding the third chain ring to the sugino crank set. I just got a 26 but i then found that the mounting holes have no threds. It looks like i will have to tap them out and add a spacer to mount it with the proper spacing between inner and middle chain rings.
by: 69.131.244.36






AGE / VALUE:   BOTTECCHIA posted by: jay on 10/16/2007 at 6:50:04 PM
i believe the bike i just picked up is a bottecchia by carnielli. early 70's? i think it is a "special" model. there is a "S" on the seat clamp. pump mounts under toptube. campagnolo grandsport crankset and pedals, valentino extra deraiuller. universal center pull brakes. any thoughts? or comments? thanks!!
by: 67.140.78.77


   RE:AGE / VALUE:   BOTTECCHIA posted by Billy Boneshaker on 10/17/2007 at 1:55:33 PM
Bottechia's crap.
by: 65.112.121.29

   RE:RE:AGE / VALUE: BOTTECCHIA posted by Warren on 10/17/2007 at 5:01:40 PM
Not all crap...just most of the ones marketed in North America.
by: 24.224.141.224

   RE:RE:RE:AGE / VALUE: BOTTECCHIA posted by ken on 10/18/2007 at 11:24:11 AM
Billy, Billy, Billy... let's try to keep it positive. Describe your Bottechia experience in detail, so we can judge whether you were JRA...
by: 209.7.150.163

   RE:RE:AGE / VALUE:   BOTTECCHIA posted by x on 10/18/2007 at 2:27:27 PM
boneshaker or bonehead?
by: 67.140.78.77

   RE:RE:RE:AGE / VALUE: BOTTECCHIA posted by Warren on 10/20/2007 at 7:04:34 AM
Have a look at the Bottecchias on this page...http://www.teamkarim.com/bikes/used/road/road.html

Not so bad...eh?
by: 24.224.141.224

   RE:AGE / VALUE:   BOTTECCHIA posted by Kommisar89 on 10/28/2007 at 12:35:44 AM
Not sure where the vitriol against Bottecchia comes from. Bottecchia, unlike some other Italian cycle manufacturers, was a full spectrum manufacturer. That is, they made everything from kids bikes, city bikes and utility bikes to professional grade racing bikes (and yes I am aware that some of their star riders were riding custom made frames rather than factory Bottecchias but that was not/is not uncommon at that level of racing). The Special is considered by some today to be a bottom of the line bike but in its day it was really more of a mid-range machine. Considering that a department store bike of the early 70's cost around $85 and an entry level Peugeot around $125, the $175 Bottecchia Special with its aluminum bar and stem and (usually) Campagnolo Valentino derailleurs and (sometimes) Campagnolo Tipo hubs was a cut above. Of course it had a straight gauge hi-tensile steel frame but double-butted cromoly was not used in those days until you got to much higher grade bikes. The Gran Sport cranset is unusual. It may have been an aftermarket upgrade as I am not aware of any Specials coming with that. As for value, not much I'm afraid. $100 - $150 is about it. Let me know if you would like more information about the Special model or Bottecchias in general.


by: 75.70.129.106







AGE / VALUE:   Freewheel posted by: ts on 10/15/2007 at 8:22:28 PM
I recently came upon a 5 speed freewheel. The only markings on it are G Momme's or G Monm'e or something similar. Can any one out there enlighten me as to country of origin and Mfg.
by: 71.181.166.212


    Freewheel posted by John E on 10/16/2007 at 2:50:35 PM
Gipiemme, perhaps?
by: 66.185.168.82

   RE:AGE / VALUE:   Freewheel posted by tOM on 10/21/2007 at 9:19:04 PM
Could be J Moyne in script. 60's/70's. French freewheel. The earliest are from the 30's.
by: 142.161.126.106






AGE / VALUE:   serial numbers posted by: jay on 10/15/2007 at 4:30:13 PM
is there anyway to tell who manufactured a bicycle just from the serial number?
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   RE:AGE / VALUE:   serial numbers posted by David on 10/15/2007 at 8:11:30 PM
It's possible some mfr used such a distinctive number AND someone remembers what it means... but I'm very skeptical.
by: 216.15.114.27

   RE:RE:AGE / VALUE:   serial numbers posted by skip on 10/16/2007 at 3:56:46 AM
I've had my best like identifying bikes by scrolling through the picture database.
by: 96.233.59.26






AGE / VALUE:   two seater posted by: sir smiles alot on 10/14/2007 at 12:01:22 PM
i have a columbia two seater and i am not sure how much its worth or what year it is
by: 74.195.173.120


   RE:AGE / VALUE:   two seater posted by ken on 10/16/2007 at 10:44:02 AM
There is a tandem page on this site.
Post pictures. The era can usually be estimated. Some components may have dates. You can send me a picture if you want.
Value is known only to the buyer, with seller's agreement.
by: 209.7.150.163