The speed of the propeller shaft varies directly with that of the power head.
800 rpm on the power head in the water will give you the same prop speed as 800 rpm on the muffs.
The only thing that I can think of that could cause damage is if you shift at too high an rpm. I the water, a sudden reduction in throttle will reduce rpms more quickly due to the water resistance on the prop. Out of the water, the power head tends to coast a bit during sudden decelleration. Shifting then, while the rpms are still high, might hurt the gears in the lower unit.
|