frankenstein bottom bracket, '92 paramount.
08-05-16 | 05:09 PM
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frankenstein bottom bracket, '92 paramount.
hi, I have a approx 1992 paramount series 5, craigslist bike. The bottom bracket is made up of off-brand but quality looking japanese made left & right cup, and a campagnolo 112mm spindle marked 68-ss-120.
It looks like the chainline is good, pedal clearance is good, no probs. Crank arms look like they go on a bit too far onto the spindle. That looks like a JIT crank arm on a ISO spindle problem.
Ok, so if I want to replace the BB with a Shimano cartridge, I think the choice is either a 110mm or a 113mm spindle length. If the crank won't press on the taper as far on the new Shimano JIT spindle as it did on the old campy spindle, then I think the 110mm would be the one to get.
Is my logic OK, or scrambled and flawed as usual.
Thanks in advance!
It looks like the chainline is good, pedal clearance is good, no probs. Crank arms look like they go on a bit too far onto the spindle. That looks like a JIT crank arm on a ISO spindle problem.
Ok, so if I want to replace the BB with a Shimano cartridge, I think the choice is either a 110mm or a 113mm spindle length. If the crank won't press on the taper as far on the new Shimano JIT spindle as it did on the old campy spindle, then I think the 110mm would be the one to get.
Is my logic OK, or scrambled and flawed as usual.
Thanks in advance!
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