Steve is right.
I too have driven some of the old crashboxes, learned to drive on one as a matter of fact. Blipping the throttle without double-clutching really doesn't accomplish much.
On a full synchro automobile tranny, double clutching while downshifting will make for a smoother more positive shift, hence the heel/toe method of driving sports cars, which, FYI, originated with unsynced trannys (BTW Dwight, how's the pedal arrangement on that new replicar), but it's certainly not necessary. Especially during normal driving, or riding. In fact, I doubt that anyone here is practicing double-clutching on their bikes hmmmm?
Modern bike transmissions are constant mesh, achieving similar results as synchros in a more compact package.
