I am with unrealtrip 100%.....

So...the way I see it, what you have found is, when an engine shuts off, there is enough compression braking to stop a rear tire at 20 mph?

HMMM, then it would seem to me that this tire would not be able to generate enough friction and traction to launch a 100HP, 600 lb bike and rider with enough force to float the front tire or run a 11 second quarter, it seems as though this tire would just vaporize in a cloud of smoke. I don't mean to sound like a sceptic, and I hope there is nothing wrong with your bike, but the physics of the problem seem inconsistant with the solution. For the rear wheel to lock up at 20mph, it seem like you need more than just engine braking (would a slipper clutch even come into play at these low speeds?).

I think the emergency off switch on the bars are there in case you need to turn the motor off during an emergency...like the throttle fails in the open position, when you are going 75 mph and if you pull in the clutch you may blow your motor. The little clever people that put that switch near your thumb were not worried about the tire locking up if you accidentally hit it.

My two engineering degrees tell me, for that tire to have locked up something out of the ordinary would have had to have happened, I would look into getting a new mechanic.

 

Alright. Thanks Guys!!!