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-   -   kaama drives on V bottom (https://www.offshoreonly.com/forums/general-q/77428-kaama-drives-v-bottom.html)

offshore2 05-09-2004 06:53 PM

Surface drives tend to push the bow over. A hook would want to make the boat bow steer.

ChristianGott 05-09-2004 08:02 PM

Hey..
I was looking at a 30'Sutphen with Kaama drives. The boat ran great, from a handling POV. The only problem is with parts availability. If I had the $$ I would have switched to Arnesons (since he had a hand in the initial design) I researched the twin-disc and worried about its RPM rating. I wondered if it was the right device for the application.

I have also had a friend who "dropped" a pair of Kaama drives into the Atlantic, due to improper bolt sheer strength.

Maneuvering is ok. Just remember that they're not called dock choppers for nothing!

Lastly, I think the Arneson plates "twist" in some fashion. K-planes, obviously, don't.

just my $0.02..

c

BTW: If you have the "roost" guards in place, get rid of them. One piece of debris, or a rope, tangled in the drive will put a real damper on your day. With out them, the object may be thrown clear.

offshore2 05-09-2004 08:10 PM

The early Kaama's had stainless steel studs, which would shear. They later went to inconell studs.

GEOO 05-09-2004 08:55 PM

1 Attachment(s)
This is an Arneson Rocker Plate in the "Rocker" up position, to give bow lift.

GEOO 05-09-2004 08:59 PM

1 Attachment(s)
Here's in the Hook or down position. In the "Hook" position they have a lage effect on keeping the bow down, with little if any lost in speed. Not like a conventional tab which would create a lot of drag.


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