[AT] Rationale for firing orders

[BetCleve321 at aol.com]

In a message dated 3/23/2004 4:51:17 PM Eastern Standard Time, 
tmartin at xtra.co.nz writes:
Two strokes that used 2 pistons together like the TWN & Puch
don't really the same analogy as the cylinders were not identical
and a common combustion chamber was used.
One piston controlled the inlet ports, the other, the exhaust
ports. 

Tom
Absolutely. Front cylinder was exaust, rear for intake. Asymitrical intaake 
and exaust timing was the result. The refered to twingles we refer to was 180 
deg twinns having their cranks separated and pressed back together at 360 deg. 
Gave the rear tire time to settle into the clay before another bang.. At the 
time with known two stroke science, these rigs were coolable but big singles 
were thought to be not..
Damn good back shop engineering.

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