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Can someone tell me how to remove this crank - http://www.cyclesolutions.co.uk/p60946/race-face-turbine-cranks-10-speed-104-64-double-ringset
Do I only need an 8mm allen key for this job?
Yup! The inner 8mm head bolt pushes against the outer cap as you undo it.. extracting the crank as it goes.
[url= http://www.parktool.com/blog/repair-help/external-bearing-crank-systems-hollowtech-ii-megaexo-giga-x-pipe-x-type-campagnolo-ultra-torque ]http://www.parktool.com/blog/repair-help/external-bearing-crank-systems-hollowtech-ii-megaexo-giga-x-pipe-x-type-campagnolo-ultra-torque[/url]
basically, yes, but details above.
the 8mm cap only loosens a bit then rubs off the 10mm bolt so I can't loosen it anymore. Am I being stupid here?
[i]The X-type right side crank has a one-key release system. The retaining cap use a left-hand thread, and is secured to the arm with a 10mm hex wrench. It is not necessary to remove the one-key system. To remove the arm, use a 8mm hex wrench on the crank bolt and turn counter-clockwise. One-key system will remove arm from the spindle. After removing the right arm, pull the left arm to remove. It may be necessary to use a mallet and tap spindle to free the arm.[/i]
basicaly the bit it's rubbing on acts as a self extractor for the crank if you keep turning the 8mm bolt.
Keep unwinding against the 10mm cap. It'll budge eventually
Just keep unscrewing it, it is meant to unscrew against the 10mm bolt essentially pushing the drive side crank of with each unscrew of the 8mm bolt.