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1

I have used Shimano 10 speed cranks with 9spd chain, derailluers and gears. Without actually having tried it with the Campy components you list, I see no reason why it shouldn't work. The only difference between 9spd and 11 spd chain is the exterior width of the chain. The interior dimensions are identical (i.e. 3/32 of an inch wide, 1/2 inch long). The ...


3

I'd say no. If the frame had a screw-in BB shell you could simply fit a tapered axle and bearings. Looks like you'll need a new chainset (that comes complete with axle) - however you could get rid of the cheapo BB71-41A (MTB type - why would anybody fit this?) and fit whatever bearings suit the chainset of your choice


0

A square taper crank set with triple chain rings is a straight forward search item in google, or the local bike shop. If you are aiming for a pure drop in replacement, make sure you get the same tooth count on the chain rings, and the crank arms are the same length. You mentioned the BB is only threaded on one end. I suspect this means you still have the ...


0

I had the same issues with my "72 and '75 Peugeots, although I'm sure this isn't related to just them. The second answer is about what I did and worked better for me. I liberally used WD40 and a cheater on my wrench.


3

They are easier to install and maintain, and depending can be lighter. However, it's not likely that you will notice any great difference in efficiency commuting on them. Probably not even 10% of the difference you would notice in a tire change (assuming the old bottom bracket and cranks were in good working order).


0

This is one I prepared earlier, the question is slightly different than the original Can I replace chainrings without replacing the rest of the drive train? but the answer suits. You have the same considerations for a selecting a new chainset as this question. Chain line When selecting a new crank set you need to ensure it aligns with the current chainline ...


8

Without seeing any pictures, I think you'll likely want to replace both, but you can figure it out easily enough. Usually, the bottom bracket will be fine after a crank improperly coming loose. The bottom bracket spindle is typically made out of a hard steel and only the most miserable metal cranks are made from anything other than aluminum, so when the ...


0

A higher end crank might have better quality materials for it's chainrings and hence the chainrings might last longer.


-2

Upgrading crankset gives you several benefits. It performs better. It is lighter. It looks way better.


1

That is an older style octalink crankset. The documentation is available here for the octalink version and here for the square version. As to what size BB you'll need that will depend on your frame. There are several sizes of octlink BBs available depending on how your frame was manufactured. If you don't have your old BB available with a legible size on ...



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