Dave,


I know we usually don't want to lug down our glow engines.
It would, however, be interesting to see what a glow OS.46LA would do with a 12x6 3B.

This to see how much low RPM torque is added as a result of converting it to Diesel.

The RPM you got on the 12x7 Pro Zinger represents a drop from 0.69 HP @ 8,800 RPM, to 0.63 HP @ 9,000 RPM.
It could be just a dip in the torque curve, with a rise to follow at higher RPM, or it could be the engine is peaked out below 9,000 RPM.

I don't think this is very likely...