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Zach Kowalchuk
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Discussion Starter · #1 ·
Hi. I'm trying to replace the crankset on my old dynatech(90's rigid). The old cranks were shot. I want to keep the bike and build it as a trail bike(4130 frame).

Axle and bearings:


Drive side of the BB:


The piece that looks like a washer on the BB looks like it can be taken off with a large spanner wrench.

I should be able to replace this with a Deore crankset or an SLX hollowtech right?
 

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The only thing that matters is your bottom bracket shell. If it's English threaded (most likely) and 68 or 73mm wide then you can put on most cranks/bottom brackets on the market today, including Hollowtech.
 

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Woah, the classy BB! I'm guessing it is a 7 speed rear, so you may have a hard time matching the rear end with the new cranksets. 7 speed has about 5mm narrower hub/axle than modern 9 speeds. Use thumb shifter on SLX? Mmm, you may want to give it a serious thought...

On the other hand, you can make a fantastic vintage SS with that.
 
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