I'm trying to help a friend in TX pick out a decent used bike.
I can spot a cassette rear wheel from across the room based on the lock nut. But he doesn't know what to look for.
Could I safely tell him that if it has a quick release lever on the rear wheel, it's almost definitely a cassette/freehub style wheel? In my experience, bolt-on rear wheels are always freewheels, and QR rear wheels are always freehub wheels.
Is this a pretty reasonable assumption?