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Hi all, I've just had some m8000 xt cranks arrive that are listed as 96 bcd
The blackspire chainring I ordered (also listed as 96bcd) doesn't fit.
It's like the xt chainset spider is 96bcd one way but not the other?
Any idea what is going on and can anyone tell me the correct rings that will fit an xt chainset? Really want a proper narrow wide ring.
Get a ruler and follow the steps on this page http://www.wolftoothcomponents.com/pages/how-to-measure-bolt-circle-diameter-bcd
Yeh I know how to measure a diameter. I've never seen anything like on the xt m8000 cranks, it's like the x has been squashed if you were to draw lines from the centre of each hole to one another, rather than making a square it makes a rectangle?
XT and XTR are both supposedly 96 but have a different offsetty thing just to piss everyone off. You're right about the rectang;e, but they do different ones
OK, didn't mean to tell you how to suck eggs, sorry.
Sounds like the angles between the arms aren't 90degs
Can anyone advise what standard I need to order then? Want a 32 narrow wide that will fit. Links would be amazing
http://www.superstarcomponents.com/en/shimano-xt-m8000-96bcd-asymetric-narrow-wide-chainring.htm
Also try works components as they might do one too
Thanks. Need 32t black so still looking
Hope produce a m8000 96bcd chain ring in narrow wide or just use the shimano one they work a treat and are as cheap on crc
I heard the shimano ones aren't proper narrow wide and drop chains a bit easier than a narrow wide?
The newest Shimano ones are now N/W, they adopted it for this years SLX, not sure about availability of the rings yet though.
One up rings are good. S/S have some 32T rings for the M8000 cranks too?
Shimano ones aren't NW in the normal sense but in six months of riding everything from roots at home & BPW reds mostly on a rigid bike I've not dropped the chain once
The offset spider is designed to better support the chainrings in 2x or 3x set ups to make the rings stiff enough (without just throwing more material at them) so that they shift well with Di2. Flexy rings and Di2 is not a good combo.
Since the 1x crank is the same, it uses the same BCD. Shimano make some really durable rings to work with a 1x set up, and practically every after market brand offers them too. Not a big deal, and certainly not intended to piss people off as suggested above?!