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Heatsink Bash On Middleburns - Bb Rubbing Issue


CriminalTrials.co.uk

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Hi all

Basically i have an old Koxx LB frame and have used a standard 22t Middleburn bash and crank setup for years, however after moving to a Heatsink bash with 18t chainring, after tightning the crank bolt pushing the crankset onto the bb fully, it rubs on the outer ring of the Bottom Bracket. See Below:

npqkw6.jpg

Im not sure what BB i have but it is like my frame pretty old. Here is a close up of the BB axel and the crankset itself:

2rgg7dy.jpg

2vx2684.jpg

2q0j4g0.jpg

Im guessing its the BB at fault but what width would i need for this setup to work?

Thanks in advance guys!

Danny (Y)

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A longer BB will sort it out for you (the shell width will be the same, which is the bit that fits the frame and is most often 68mm)

A 128mm axle will cover almost every setup (Y)

Longer BB needed, that one looks like a 113 or 118, you'll need 122.5 or 127.5 :)

Just get a 128mm bb, sorted. :)

Although I preferred to run the shortest BB possible when I rode, because my feet were closer together. Dunno why, just felt more comfortable.

Thanks, thanks and thanks :)

Adam you will be recieving an order come pay day :) hehe.

Cheers guys.

Danny

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