Brian, it is an interesting idea and you are right, ignition would
definitely have to take place ATDC. However, I'm more interested in the
"shape" of the pressure spike. Kind of the difference between putting flash
powder or gun powder in a rifle cartridge. One burns and one explodes.
Instead of "distributing" the burn and pressure over roughly 40 crank
degrees you are accomplishing the task in less than 2 degrees of crank
travel. That puts tremendous stress on everything. -Elon
-----Original Message-----
From: Bryan Savage Sent: Wednesday, February 23, 2005 1:28 AM
Well, I don't think I'd pull the trigger at 34 degrees BTDC.
Probably more like 0 to 10 degrees ATDC so that max pressure is
at the same points ATDC that it is if a normal spark plug were used.
The HP increase would be better than free because there would be
less stress on the motor.
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