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Old 07-26-22, 08:21 PM
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Polaris OBark
ignominious poltroon
 
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I'm almost certain they are symmetrical. I have one I just stuck in a frame. I will go measure it.

I have 14mm clearance on both the left and right of my symmetrical chain stays, which are 96mm apart. So the crank arms are 124 mm apart (inside to inside). GRX 600 11-speed, 172.5mm.

Crank arms are 14mm thick.

Total Q measured piecewise is therefore 152mm, which agrees with the claimed Q factor within experimental error.

HTH.

Last edited by Polaris OBark; 07-26-22 at 08:31 PM.
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