JSF-TC

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I'm planning on putting a Rossi 53 with a Rossi full length tuned pipe on it.

I think an 11x8 or a 10x9 prop should do to start with.

The Rossi book says that max power (2.2hp) is achieved at around 16k rpm so the question is;

Should I tune it and prop it for 16-17k on the ground and let it unload in the air, or prop it down to around 14-15k so that it unwinds to the max power rpm in the air???

Any thoughts are appreciated.

Thanks