Electronic tacho

[bsa-bill]

will an HT not normally just fire once per 2 cycles? Regardless of number of cylinders?

no it fires every time both piston come up to the top ( one on compression the other on exhaust stroke), believe it's called the wasted spark system

[Slippery Sam]

Other than Bills double spark - will an HT not normally just fire once per 2 cycles? Regardless of number of cylinders?

LOL, Bill your double spark set up was already excepted from that statement.
I should have qualified by saying with a mag or something.

Cheers Raymond

[bsa-bill]

I should have qualified by saying with a mag or something.

Yes in the case of a maggie on a four stroke,.

Two strokes and impulse do dahs could be different, but then we're starting to split hairs or cycles