There are no stupid question, just stupid questioneers ...
Re: Why no QR's at the track ??
A : On a track bike you torque the rear sprocket both forward AND backwards, producing much higher stresses on the rear axle. On a QR bike, there are several ways for a QR hub / wheel to fail, e.g.:
(a) Axle too long on one side, (b) QR skewer snaps, converting into a missile / bullet, (c) Axle itself snaps, (d) Insufficient torque on QR. Nobody make QR torque wrenches, (e) Someone puts grease on the dropout faces.
With a nutted axle, the skill of hub manufacture is not really a risk. With a nutted axle, the skill of the mechanic is not really a risk. With a nutted axle, only something tantamount to sabotage (failure mode (e)) is likely to cause the hub/axle to fail.
- Don Gillies
San Diego, CA