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Koso gauge RPM set up

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DomP:
I'm running a Dyna S that came with it when I bought it, whether that affects things

McCabe-Thiele (Ted):
If it works on the  LT side of  the impulses will it not be related to the number of sparks generated for one crank rotation?
Not as such affected by the HT coil side?

DomP:
I'm not sure I understand Ted.  The instructions are woeful, in the setup guide you have to select for 4 stroke and 4 cylinders by selecting options that go 0.5, 1, 2, 3, 4 but on my gauge there are .5 increments that don't relate to anything in the instructions.  It's to chose the number of ignition per cycle.  Clear as mud to me.

Bryanj:
A "standard"  electronic tacho will count 4 lt pulses for 1 crank revolotion, the honda coil will pulse twice for one crank revolution so readings may well be wrong, also with the dyna there is a different amount of "dwell" or coil charging time which may afect the tacho operation, i cant comment on that as i understand electrical dohickies but not elctronical ones

McCabe-Thiele (Ted):
An electronic rev counter works by converting the rotational impulses into either a digital or analogue display.
A rev counter for a 4 cylinder car will not work on a 3 cylinder one though manufacturers might fit a circuit so it works on both. I fitted an Audi 100 GL car  rev counter into my old Mini as both were 4 cylinder vehicles.
I assume yours will be specific for a 4 Cylinder motor cycle that uses  the wasted spark system - not a distributor

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