Scitsu Tach Configuration

[Root]

Howdy Hawkers!

Who know what the "Sparks Per Rev" is for the HawkGT? I'm confused by this chart and my Koso failed me at Laguna, so I'm looking into a Scitsu.

Here's what is on Scitsu's site.

White	1 spark per 2 revs ( e.g. single 4 stroke )
Red	1 spark per rev ( e.g. single 2 stroke )
Blue	2 sparks per rev (e.g. 4 cylinder 4 stroke )
Green	3 sparks per rev (e.g. 3 cylinder 2 stroke )
.
Orange	3 sparks per 2 revs (4 stroke triple)
Brown	1 spark per rev (uneven) (Some V twins e.g 45 degree crank)
.
Yellow	1 spark per 2 revs (Magneto 4 stroke single)
Black	1 spark per rev (Magneto 4 stroke twin)

[riot]

The Hawk has 2 individual pulse coils mounted directly to the crankshaft output, so provided you only use the signal from one of the coils, you’ll want 1 spark per crankshaft rev.

[riot]

What’s really confusing is why are there 3 options for 1 spark per rev? Remember your tach normally records crankshaft revolutions, not combustion events (which is 1/2 of reported RPM) on a 4 stroke.

As far as I know, the only way to get 1 spark per 2 rev is points mounted on the camshaft or a cam sensor (or at least, a pretty modern ecu). Most old school bikes just have a ‘wasted spark’ for the non combustion stroke.

[Root]

I wrote them to ask for clarity, but I have yet to hear back.

Mike

[rpm10k]

They aren't known for their customer service. Nice tachos though. I'm pretty sure on my trail tech it's set for 0.5 ppr.. I may be remembering wrong though. I'm sure someone can chime in with the right answer..

[bitzz]

You want WHITE and take signal off the front coil.