RE: Speed models Beretta
When you start the model give it a light throw and let the prop do the work.
Do not throw hard. Important is a reliable running of the engine with full power.
Engine must be run in. We have good experience with the APC 7x6 wide.
With a 40 pylon engine you can use an 7.8x8 prop.
Spinner is 1,75 inch or 45mm. Always use an alu motormount for max. rpm.
Use 5 to 15% nitro that is enough. Model is available with o,4mm plywood wing.