Re: I know you all hate American Choppers but...

Posted by LukeM on
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/I-know-you-all-hate-American-Choppers-but-tp4029654p4029803.html

If the firing order on the CB750 is 1-3-4-2, and based on the observation that it operates like a parallel twin x 2 (2 pistons going up, one fires, same 2 pistons go up, other one fires), and if cylinders 1 and 2 are on the same side of the bike, then you would get 2 exhaust impulses per side:

1 - left
3 - right
4 - right
2 - left

and so on.  I was originally thinking they would alternate in a left/right/left/right pattern, but the firing order determines that.

I like machines.  They are fun to figure out.
Luke M