BB30 crankset - how...
 

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[Closed] BB30 crankset - how does the preload adjuster work?

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Fitting an sram x1 bb30 crankset to my bike, it looks like it's wider than the shell and could do with a shim or two. However, the instructions call for no shims, and that you just tighten the plastic preload adjuster on the non-drive side. Anyone know what I mean? It's the grey notched thing against the left of the bb shell below:

[img] [/img]

This does pull the crank across and it appears tight, but the adjuster doesn't appear to be threaded so how does it work and will it stay in position?


 
Posted : 13/07/2015 2:31 pm
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That looks too big a gap there. The adjuster will only take a mm or 2 in slack. Its only designed to stop the sideways sliding of the cranks and should only be don't up to do this. Something looks missing to me.


 
Posted : 13/07/2015 3:35 pm
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Thks thrustyjust - I was thinking it looks a bit odd. On the previous crank the adjuster only moved a little bit. I'll try a couple of shims on it.


 
Posted : 13/07/2015 4:01 pm
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The adjuster on mine sits near the crank. I am sure there is a plastic spacer between the adjuster and the bearing face on that side and on the chainset side another spacer.


 
Posted : 13/07/2015 4:12 pm
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careful are there are 2 sizes available that's the thinner one there is also a 13mm available as well


 
Posted : 13/07/2015 4:16 pm
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[img] [/img]


 
Posted : 13/07/2015 4:20 pm