Quote:
Originally Posted by Noizz
Harleys are V-twins, they fire at 45 degrees, but there only 2 pistons, and there is a gap of 405 degrees after each piston fire.
A crossplane 4 banger will fire piston 1 @ 90, 2 @ 180, 3 @ 270, 4 @ 360. Unlike a traditional 4 banger firing 2 pistons at once (180 gap), crossplane reduces the pulsing, and smooths out the traction. Essentially you only have a 90 degree gap.
So its not like a Harley where it has high rotational inertia, the crossplane is much more smooth.
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Hmm according to this video, each cylinder of a normal 4 banger is fired every 360 degrees even when 2 of them are at the same position. I am wondering why they don't fire 2 cylinders at the same time? That should produce more power, no?
haha check out the wacky firing pattern:
http://www.youtube.com/watch?v=UvTXMtTTKQw
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