Hi Dave-
The engine worked great for about one gallon of fuel through it.
then the ignition module broke down and i had to replace it.

with the previous ignition module, the engine peaked at 9000rpm on a MA 16X8, great performance.
the only thing i changed was the ignition module, with the new one - the engine peaks at 8200rpm on the same prop.

it seems that the ignition, although it clearly says 4.8V, needs a bit more...
i really dont want to fry my module so i have some hesitations about connecting it to a highr voltage source...

I will wait for your replay regurding horizon's answer.

10x dave ...