truthfully the idea is to make an OKAY craft. i'm thinking 150 to
160kts with okay fuel burn.
now if i'm right i'd be running the tranny in like 4th gear. isn't
this where its designed to spend a good deal of its time ?

if i remember right, a car engine's output is not perfectly circular
its kinda eccentric. and something is neccessary to convert the
irregular motion into the circular motion for the prop