Why out drives instead of Arneson's. Simple. Most people know one thing and they follow that one thing.

Manufacturers use Merc b/c Merc provides an engine/outdrive package all in one stop shopping rather than sourcing each item separately. Also Merc (was) offering the OEM's some creative financing in order to keep and persuade them not to use anyone else.

In other words it just business tactics.

In regards to Rake: More rake = more bow lift. Less Rake = Less Bow lift.

Cleavers are/were designed for the surfacing applications. They work well at being efficient in the surfacing mode but they also have some trade offs. Changing the cup, camber and rake will greatly affect the performance of the boat. What works well on a gas power does not work as well on a diesel powered boat. Different propeller rpm and different torque levels require a different designed propeller to function at their best.

As to transmission concerns, I am the one that invented the idea of putting the transmission inside the standoff box to keep the engine in the same standard Bravo location and not affect the CG of the boat.

I might be doing a new 42' Poker Run Edition soon.

FYI, here's a photo of how the Cat could have been setup

Hey Rik, You thinking maybe some 710s or what?

Ok, a 42 Pokr Run in light blue with some P1 graphics would be a really nice looking boat!

Camber, what is that really? I have a 34P Bravo prop in my truck which is from WCM- It is written "Raised Camber" on it. Never really understood what was meant with that....

It is a little strange that a new 47 Lightning will run 75 mph with twin 480 Yanmars and arneson (which is very good), but that 12M only run 60 mph with the same power and also Arneson on this boat. Yes, not a step-bottomboat, but the 12M is MUCH lighter and smaller!!!

The Nor-Tech looks wonderful.

One final question, there is a guy here with a Hydrolit C31 with a big gas engine. He has put on a Arneson drive like the one which is mounted on the cat you attached a picture of. The steering consist of one ram on one side attached to the black box. Is it normal to have only one ram in a single engine application? The steering is not working right, and no-one manage to fix the problem. He has around 850 hp.

Thanx

Hey Rik,
I am told that i can not install Arnesons on my 38 Comp due to the staggared engine set up. Is this true? Is it because there is not enough room to mount the two drives so close together?

Sorry to Hi-Jack the thread.

I've got a brand new 38' Donzi ZRC with my Sterling 900 package on it in a stagger setup. Boat hauls (blank blank blank) This was not a conversion, rather a new blank hull from Donzi that Kolor Craft rigged for Aqua Mania.

It is at Aqua Mania in NY. Rick Merola built it for a customer. Definitely doable as I have another 38' ZRC on a side by side that runs very well also. (Like 112-114 mph with the old bottom)

I'll have to get a photo from them.

Rik, is that the nor-tech that had ITS, and xr's that is/was for sale from fastboats?

If so what are the performance numbers from the xr's to arnesons?