When I was a kid I had a Cushman scooter that was limited to 5 hp. After about six months I found the motor had a plate like washer in the intake manifold that restricted the airflow to the motor. I took it out and replaced it with a gasket and that Cushman hit 60 mph! I don’t think that would work with a direct injected engine, might work with throttle body injection.
Just thinking out loud.
ZX
nevermind
How about this
http://www.magnumtuning.com/en/detail/revolution-pro-boat-motor-speed-rev-limiter-cdi-box
quote:
How about this
That looks like it’s designed to make it go faster, not slower. I can’t do anything that might void the new engine warranty either.
The removable throttle stop with a key lock is the best solution and the one I’m going with. I’ve enlisted the help of Raymond at Martin Marine Design, he’s a master fabricating parts with starboard and hardware. I’ll post pictures when we get finished.
Thanks for everyone’s input 
Capt. Larry Teuton
Cracker Built Custom Boats
“Ships are the nearest things to dreams that hands have ever made.” -Robert N. Rose
Neither Larry nor Chris V. has a liability issue with the boat/motor combo. The boat owner thought the motor might be a bit much for the boat when it was first installed, but it is not. She runs about 40 WOT without a shudder which is perfect. She just doesn’t like to turn at speed. The boat’s owner knows about that characteristic and will behave accordingly.
BUT, the boat’s owner has a wife, two kids and some friends that will want to drive from time to time, and the excitement of having a rear end that does not immediately follow the bow might be a little exciting and might lead to some bad choices for an inexperienced driver. Larry and I talked about whether there might be an electronic limiter, and I appreciate his crazy question.
Installing a skeg is probably the best solution, but neither of us wants to do that right now. Maybe down the road.
A piece of starboard that locks into place to hold the throttle off of wide open is an excellent low tech suggestion. Even with a skeg that caused it to track like it was on rails, 28-30 is faster than I want to water ski, and it is fast enough for most people to drive that boat – where’re they going in such a hurry.
By the way, the boat is an absolute beauty and very solid.
Just saying! When I was a kid, I’da had me a copy of that key, in short order. Go nice and slow until I was out of sight and hearing and then, Away we go:imp:
Just watching out for those girls, Rogerdog Raymond and I will come up with something real slick.
quote:
When I was a kid, I'da had me a copy of that key, in short order. Go nice and slow until I was out of sight and hearing and then, Away we go
Kids nowadays are probably more likely to defeat a software solution than old school hardware, but I hear ya. I was that kind of kid too, which is why I worry. Nothing is perfect, but I’ve got to do what makes me sleep good.
Capt. Larry Teuton
Cracker Built Custom Boats
“Ships are the nearest things to dreams that hands have ever made.” -Robert N. Rose
Did you complete it yet? What’s the final product look like?
Fishing Nerd
“you win some, you lose some…but nothing beats getting some!”
No, have not completed it yet. We’ve got the mount and lock worked out. Waiting until I get the T-top and leaning post on, then run it to find out exactly how high the stop needs to be. Leaning post and top are being built now. I’ll post a picture when it’s finished.
Thanks for asking.
Capt. Larry Teuton
912-six55-5674
lteuton at aol dot com
“Ships are the nearest things to dreams that hands have ever made.” -Robert N. Rose