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Old 05-13-06, 04:36 AM   #1
Jesper
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Record 10 speed crankset with 8 speed drivetrain?

I have just bought a new Record 10 speed crankset (aluminium version) to replace an old Shimano 600 crankset. The rest of the drivetrain is 8-speed Campagnolo.

My plan is to make some spacers to fit between the arms and the small chainring to make room for the 8-speed chain. Does anybody know how thick these spacers need to be?

My 8-speed chain is 7,2mm wide and a 10-speed chain is 6,1-6,2mm wide. From this I would expect the spacers should be about 0,5mm thick.

I expect I can't be the first one to have done this, anybody with experience?

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Old 05-15-06, 05:25 AM   #2
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Quote:
Originally Posted by Jesper
I have just bought a new Record 10 speed crankset (aluminium version) to replace an old Shimano 600 crankset. The rest of the drivetrain is 8-speed Campagnolo.

My plan is to make some spacers to fit between the arms and the small chainring to make room for the 8-speed chain. Does anybody know how thick these spacers need to be?

My 8-speed chain is 7,2mm wide and a 10-speed chain is 6,1-6,2mm wide. From this I would expect the spacers should be about 0,5mm thick.

I expect I can't be the first one to have done this, anybody with experience?

Thanks
Jesper
It will work fine even without the spacers. But if you're anal about the spacing, try this http://www.branfordbike.com/cgi-bin/perlshop/perlshop.cgi?ACTION=push&thispage=chains/chains3.html&ORDER_ID=482273811#item2.

btw, you would need to change your bottom bracket to a Campy too
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Old 05-15-06, 07:40 AM   #3
TallRider
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+1 on what e_guevara said, especially the bottom bracket. It's possible the 8-speed chain, with greater outer width, will catch on the outer (larger) ring while on the inner ring. Of course, there's no problem running a too-wide chain on the outer ring, because it won't bump up against any other chainring. You'll probably be okay on the spacing, but if you have issues with the chain rubbing against the outer chainring while in the inner chainring, do the spacing thing that e_guevara linked to.
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Old 05-15-06, 11:58 AM   #4
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No mods required. I recently installed a new Campy compact crankset on an old Campy 8 speed drivetrain. Chainrings shift beautifully, no rubbing.
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Old 05-17-06, 02:15 PM   #5
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Thank you for the replies.

It sounds like I should try and see how it works. I never use the two smallest cogs with the small chainring and I guess that's where any chainrub would occur. The instruction manual for the crankset just made it sound like the entire bike would self-destruct if you didn't use all 10-speed components.

I knew that I need a Campagnolo bottom bracket, but strangely, in several places I have seen a package deal with the crankset and a non-Campagnolo bottom bracket.
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