You are reading a single comment by @pdlouche and its replies.
Click here to read the full conversation.
-
With these metal calipers I'm getting over 13mm
I can't imagine that anybody has ever sent an axle out of the factory which is that far over spec. Check your calibration, if you have any known cartridge bearings to hand they are a decent standard which will get you pretty close, the OD of the outer race for bicycle sizes will be nominal plus 10-20μm
No, mine is less than 0.5mm per side over the nominal length, so that's how far out the chainline/Q-factor would be.
For an ISO spindle, the measurement should be 12.60mm across the flats measured 2mm inboard of the axle end (according to Sheldon Brown). You should be well onto the flats by then, I had to do some maths because my axle is short and chamfered too, and the JIS measurement is supposed to be 12.65mm at the very tip; at 51.5mm off centre on my "103mm" axle, I'd have been measuring air.