you find once you get out in some seas that smaller and faster is better than bigger and slower.

You are running turbo charged engines when you launch and get off the throttles even the slightest you will loose boost almost all of it, if the props are too big you will not regain boost because they will drag down the RPM's.

Smaller has less drag and will accelerate and get your boost back faster - you'll see trust me on this.

Your slippage is looking good, maybe you can decrease the diameter on the 32's to pick up some more speed. Sneak up on it.

Awesome project, but i am partial to diesels I wish my boat could perform like that. any idea on economy? what part of Sweden are you in? I have a few friends over in Stockholm with some fast boats, and big boats maybe you know them.

I agree with what you are saying here Joe. When we got in the heavy seas in the Yucatan Straits our big props and loosing boost almost did us in. We fought that constantly and was not fun.

Bob

Thanks Bob, means alot that you said that.

I live in a town called Gavle. About 110 miles north of Stockholm.

Itīs a lot easier with the 2-speed gearboxes

Will try both ways. Looking for a set of 28"-18" and something in 30-32" with smaller diameter, like 16,5.

Some pictures.

You belong here - http://www.powerboatarchive.co.uk/Mo...-Monaco90.html