I have a 97, Evenrude 90HP V4, Max Operating range is supposed to be 4500 - 5500 rpm. Am currently turning 4800 rpm max with normal lite load,...
For you Naval Architechs: My 20 ft custom Inboard is starting to Porpoise at 82 mph, 12x15 prop turning 6200 rpm. I have plenty of throttle...
I have a Borg Warner, Velvet Drive 71C, 1:1 Gear. Transmission is turning a 12x16 non cupped prop at 6000 - 6500 rpm, probably less than 10% of...
Can an Automatic trans Flexplate be used instead of a flywheel with a Velvet Drive Trans? I realize proper Engine balance must be maintained,...
This question has probably been asked before, but here goes. I am building a Fast, almost flat bottom , Mahogany Boat , Powered by a modified...