modern rear derailleur on a vintage frame?
04-02-09, 11:40 PM
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modern rear derailleur on a vintage frame?
hello all, first post. i have been riding for years, but never built up a bike from scratch and i was wondering a few things before i start buying parts. i looked around and couldn't really find much on my question, so here it is...
i want to mount a modern rear derailleur on a vintage frame...i will be running a new set of 700 wheels, and the frame will most likely expect 27"s. i haven't found the right frame yet. i only want a rear derailleur, plan on running a single 52 up front. i was thinking tiagra on an sti. i know mechanics and can service my own ride, i was just wondering if this is possible before i get all hot and bothered by it. pretty much the only used part on this bike would be the frame...
anyone ever done this? is this even a good idea? i usually do about 90+ miles per day when on a bike outing.
i want to mount a modern rear derailleur on a vintage frame...i will be running a new set of 700 wheels, and the frame will most likely expect 27"s. i haven't found the right frame yet. i only want a rear derailleur, plan on running a single 52 up front. i was thinking tiagra on an sti. i know mechanics and can service my own ride, i was just wondering if this is possible before i get all hot and bothered by it. pretty much the only used part on this bike would be the frame...
anyone ever done this? is this even a good idea? i usually do about 90+ miles per day when on a bike outing.
04-03-09, 12:15 AM
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mechanically sound
Should be an interesting build. I think it's possible.
04-03-09, 12:54 AM
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The only potential problem that I can see is the distance between the dropouts. Older frames most likely will be 126mm and if you want to use modern wheels you will need to have 130mm. It's a minor problem though. You can "cold set" the dropouts yourself or any decent LBS can do it for a modest fee.
Otherwise, assuming the drive train components are compatible (and if they are all modern parts, no problem there), then yes, it's quite do-able.
I've had an Ultegra drive train on a 35 yr. old frame, and it pretty much just bolted together.
Otherwise, assuming the drive train components are compatible (and if they are all modern parts, no problem there), then yes, it's quite do-able.
I've had an Ultegra drive train on a 35 yr. old frame, and it pretty much just bolted together.
04-03-09, 02:14 AM
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04-03-09, 04:31 AM
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a77impala
Does the frame have a deraileur hanger on the dropout?
04-03-09, 05:55 AM
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have fun with the project!
04-03-09, 07:43 AM
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126mm to 130mm on a steel-frame is simple and rarely requires cold-setting. And most modern derailleurs will work fine as well. I have an Ultegra on my 1982 Reynold's 531 Puch A-D frame. I've been building & updating components on this frame since 1982. It, too, is all modern except the frame/fork.
Have Fun!
Have Fun!
