Reelthing wrote on 09/12/10 at 21:50:36:I guess an induction tach would work sort of - seems to me it would show 2x the rpm because of the savages wasted spark ign - see it sparks every time the piston goes up
make your own what? induction pickup?
If they can measure the revs from the battery does that mean the engine needs the battery after it has started for the next spark?
The screw going to the negative side of my battery had come off a few days ago, and it started to backfired like crazy at all speeds yesterday even after changing it to prime/ reserve, but after I realized there was no screw today, and took it for a test ride I didn't have a problem. When I go to work tomorrow I will see if this was problem.
It wasn't out of gas because I drove it another 10 miles today.
What Ah battery is recommended?