Originally Posted by Hightower
Getting a variable pitched prop would be the same as gears wouldn't it?
Kinda similar but the variable pitched prop would be better because at lower speeds the low pitch would hold the water better. Not to take anything away from the gearbox cos I'd like one if it was available but I've seen me open the throttle wide on the back of a wave at about 15mph and been aware that the props are showing sign of breaking away. With the extra torque the gearbox would apply to the props, they may well let go.
I'd actually like the gearbox to change up at higher speed rather than change down at lower speed. If the boat was set up with a fine(ish) pitch prop so as to give good performance in the lower and mid range, then when up to cruising speed it would change up sorta like an overdrive. A small disadvantge would be the low pitch prop not being quite so efficient at higher speeds but overall it could be very satisfactory.