You don't have to manufacture a transmission for one of these - the propeller goes straight on the crankshaft of the engine so that likely saves a bunch of labor time/materials. You're sort of limited to the redline of the engine, but if it's designed for high RPMs (rotary engines are great for this) feel like a that's not much of a limitation.
You don't have to manufacture a transmission for one of these - the propeller goes straight on the crankshaft of the engine so that likely saves a bunch of labor time/materials. You're sort of limited to the redline of the engine, but if it's designed for high RPMs (rotary engines are great for this) feel like a that's not much of a limitation.