White LEDs for Neutral and Turn Signal indicator lights

[Easy Rider]

Originally Posted by 5th_bike

Ooh, I realize now that when it makes 1,400 rpm, it fires only 700 times per minute (two revolutions per ignition, it's a "4-stroke" after all...) therefore there are 11 to 12 'explosions' per second, that sounds about right. You only hear 700 beats yet it does run 1,400 rpm.

That is true but consider this: I "think" I remember that this is a "double fire" arrangement, in that the spark plug actually fires every revolution (yes, at the top of the exhaust stroke too) because it is simpler to design that way and the extra spark is just wasted.

If that is true and the tach is set wrong, it would be counting each spark as a rev. and indicating TWICE the actual RPM.

I'm not necessarily saying that yours is doing that, since the rpm/gear/speed readings seem to come out right when going down the road; just something to keep in mind for future discussions !!

(And I won't mention how idling too slow is somewhat like lugging the engine.....until I'm able to get some readings on mine !!)