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Old 09-12-05, 10:50 PM   #1
Seanywonton
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restoring a Peugot record du mond into a commuter

This a lot of questions rolled into one: but first some background. I am pretty good at working on bikes and I want to build or buy a fast commuter, something with fat fenders, 700x32-ish tires and a rack, but still able to kick ass in traffic. I've been flirting with just dropping $900 on a Surly Cross-check, but I also own a sweet 70's or 80's Peugeot, realy nice brazed renolds 531 steel frame. I have a lot of parts laying around too, and so most of my inquiry is about compatability of drivechain and deraileurs, and what it would take to get this bike up and racing some cars.

I will probably rock downtube shifters on this bike or maybe some bar-end shifters, I want to stay fairly low-tech. I will also probably buy a new back freewheel but stick to the original 6- speeds instead of trying to add more speeds.
I also already have:
A set of ultegra double race cranks for a 9-speed
The original front deraileur
back deraileur: I have a dura-ace short-cage 9 speed or an XT MTB deraileur

So if I run six gears in back am I going to run into trouble with the back deraileur, since the chain might be wider than those are built for? or can I maybe get away with it? will a 6/7 gear chain have problems running on the ultegra chain rings? I dont think so.

O maybe I should just look fo a 8/9 speed freewheel and hopefully that will fit in the hub spacing no problem, then I could rock the dura-ace deraileur in back and no problem with the cranks either.

So I would love to hear any feedback, and advice on whether it's worth it to fix this guy up. I think it could be, and a lot cheaper than buying a brand new bike. But I only want to do it if it's going to run smoothly in the end and be a great bike.

Thanks
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Old 09-13-05, 03:01 AM   #2
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Quote:
Originally Posted by Seanywonton
This a lot of questions rolled into one: but first some background. I am pretty good at working on bikes and I want to build or buy a fast commuter, something with fat fenders, 700x32-ish tires and a rack, but still able to kick ass in traffic. I've been flirting with just dropping $900 on a Surly Cross-check, but I also own a sweet 70's or 80's Peugeot, realy nice brazed renolds 531 steel frame. I have a lot of parts laying around too, and so most of my inquiry is about compatability of drivechain and deraileurs, and what it would take to get this bike up and racing some cars.

I will probably rock downtube shifters on this bike or maybe some bar-end shifters, I want to stay fairly low-tech. I will also probably buy a new back freewheel but stick to the original 6- speeds instead of trying to add more speeds.
I also already have:
A set of ultegra double race cranks for a 9-speed
The original front deraileur
back deraileur: I have a dura-ace short-cage 9 speed or an XT MTB deraileur

So if I run six gears in back am I going to run into trouble with the back deraileur, since the chain might be wider than those are built for? or can I maybe get away with it? will a 6/7 gear chain have problems running on the ultegra chain rings? I dont think so.

O maybe I should just look fo a 8/9 speed freewheel and hopefully that will fit in the hub spacing no problem, then I could rock the dura-ace deraileur in back and no problem with the cranks either.

So I would love to hear any feedback, and advice on whether it's worth it to fix this guy up. I think it could be, and a lot cheaper than buying a brand new bike. But I only want to do it if it's going to run smoothly in the end and be a great bike.

Thanks
I guess the main question is what type of components are on the bike now? If they are French, and French threaded, it will be difficult and expensive to upgrade to Shimano or Campy. Campy did make headsets and bottom brackets French threaded. They are in very high demand on ebay, check out the prices. Also, see if the freewheel/hub is French threaded. While you are at it check to see if the stem is French. Then write back and maybe someone can help. Or check out the French section on Sheldon Brown's site.


Tim
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Old 09-13-05, 10:27 AM   #3
Seanywonton
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For the headset and stuff, they are just standard threads including the back hub, which is an old shimano 105. I think I want to go with one of the new shimano 7 speed back freewheels, either a "mega" 11-34 or a 11-28. for the front I'll run the ultegra double crankset I already have. Also I already replaced the BB which I know is standard threading so that is not a problem. Mostly my problem is I need a little help figuring out gear component compatability.

So as it stands its really just a matter of 1) finding out what length BB I need to get the chainline fairly straight, and 2) figuring out what derailers will work with the 7-speed system, hopefully a MTB derailer that I already have will work w/ the megadrive freewheel. Will I have any problems running a 7-spped chain through, say, an XT back derailer? And the 7-speed chain should work fine with the ultegra chainrings, right? hope this clarifies my situation.
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Old 09-13-05, 10:34 AM   #4
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Most older bikes, 7 speed, have 126mm spacing in the rear. You can cold set the rear to 130mm and run it as a 9 speed. You have most of the parts already. Just put an 8/9 speed cassette on the back hub if it's a cassette. If not, get a 105 9 speed hub and have it laced to your rim. Now that Shimano is going 10 speed 9 speed parts are being dumped while everyone is jumping on the 10 speed bandwagon. Good Luck.

Tim
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