Can someone give some tuning setup specs for a MVVS Quickie 40 with rear tuned pipe ???

Pipe lenght using a GRRT pipe?

Prop size ?

Head shims ?

Nitro content ?

Recommended RPM ?

Thanks, Mike

The engine should run at 20000 rpm or more.
with the 3247 tuned pipe, start out with a header of about 4" length, and a 9x5 prop. shorten the prop and header as required.
Nitro? If you do not burn out plugs every three runs, there is not enough nitro in the fuel. The plug should at least show a dry, nearly white sandblasted surface on the glow element. An Enya #6 is a good plug to start with if you will ask for prolonged power. For short power bursts, use an enya #4.
The modern quickies are built for US nitro fuel, so shims should not be needed. If you burn out plugs with low nitro fuel, run a max of 5%, because for the power, nitro is not needed.

Point to ponder:
If you do not know how to tune a racing engine and work your way up the power curve, it may be better to start with a sports engine to get the hang of it, until you are ready for the real stuff.

Pe

Thanks for the tips.

As far as the points to ponder I was only looking for a good starting point as it's easier to start at a baseline than to toast an engine.

Been modeling for 46 years & not afraid to ask a question. LOL

Mike