Emergency braking: Clutch or de-clutch?

[Metastable]

..... you'll find their injuries were from getting the hand trapped by the lever and or handle bar and having the flesh ground off them.

(Sorry for the slight thread derailment)

It is like an epidemic with road racers.
Troy B.
McWilliams
Roger L. Hayden
Crutchlow (very recently)
and I know I am forgetting of at least 1 more that was withing the last year or two...
plus one guy at the last trackday I was at.... he lost 2 fingers from one hand.... but it was never clear as to why.

[Crasherfromwayback]

Then there's Doug Polen losing most toes and a fair bit of his foot in the chain and sprockets of his Ducati...

[gatch]

You should not be concerned about locking up the rear under emergency braking. If you are braking hard the rear often locks up, because the weight comes of the rear tyre. As the rear tyre has less and less traction with the ground it becomes easier and easier to lock up. At this point the rear brake has pretty much no input. Hence it makes no difference weather it locks up.

I disagree. The rear wheel while it is spinning is effectively a gyro yes ? The stabilizing effect of the rear wheel turning could be the difference between a crash and a safe E stop.

And if you are having to E brake mid turn, a back wheel lock up could well kill you as fast as the obstacle you are trying to avoid..

[gatch]

(1) If you are fast running out of stopping room at least your options are opening more and more as distance expires less and less rapidly as speed comes off. In the end if you are still unable to stop, you can swerve and avoid the obstacle at low speed or hit it square on and leap over it.

(2) I think you will find racers stamp the fuck on all the brakes and just mash it down gears with the tacho hovering around redline - not quite the same way we'd treat our roadbikes, but in the end they have "emergency braking" down to a fine art - if they want to stay in front that is. For myself, I stamp on both brakes hard and keep going down gears without blipping, all the time leaving my "locked wheel" detector running.

(3) Keep doing what you're doing! I wish there were opportunities to mentor down here, though I expect I would be bluntly excluded. Oh well.

1. NO. FFS as you get closer to your obstacle your options are fast running out. Especially if you are carrying too much speed to stop in time. I am not a physics teacher, but someone who knows the math can tell you better than I.

2. IF you try this "mash and stamp" racer technique of yours, you will find youself waking up in an ambulance. Or not.

3. FOR GOOD REASON. YOU WOULD SEND SOMEONE TO THEIR DEATH.