First a little background. I like performance and racing. I've even been known to watch lawnmower races on TV. I really love racing. I really,really love drag racing. And I really, really, REALLY love motorcycle drag racing! I've been riding bikes since '62 but it's only been relatively recently (last 10-12 years) that I've been involved with motorcycle dragracing.
During that time, I've read many, many books on racing and performance. One common thread that ran through all of them was that of the four valve events(intake opening/intake closing, exhaust opening/exhaust closing), intake closing was the "most important". I understood the rationale behind this statement. You keep the intake valve open after BDC (bottom dead center)and rely on the inertia of the incoming charge to continue to fill the cylinder beyond a VE of 100%.
However, I was curious if the statement would hold up under close scrutiny.I then set about to devise a method of testing it (short of building several dozen motors to test all the changes).
In my next post, I will detail the data I used to confirm/deny the hypothesis.
Ahh, what the heck! I think I'll also use this blog to keep my many fans updated on the changes to the drag bike for the 2010 season (for pictures of the bike, please check out the Keller Racing website).
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