On Sun, 21 Nov 2004 22:11:43 -0500, Harry Krause
wrote:

JohnH wrote:
On 21 Nov 2004 17:35:54 -0800, (Big Daddy) wrote:

Hello. I have a 29' Chaparral (great boat) with twin v-6's and Volvo
duoprops. It comes on plane extremely fast if I work the trim tabs
full and use the outdrive tilt. You almost don't even know the bow is
raising!

My question is...in lieu of the damn gas prices, I'm wondering if I
could get better mileage if I added larger trim tabs so that the boat
would plane at a slower speed. Right now, I have to get it to 3,000
rpm's to bring it down on plane.

Any thoughts?

Thanks!

I use no tabs unless I want the bow down for rough water, i.e., to
give a little smoother ride while on plane.

John H


Nice that you have tabs and only use them on rough water, Herring,
but...that isn't what the poster asked. Oh...and his boat is much
heavier than yours, and is powered differently. D'oh.

I can see that this response is much more your style, Harry. Do you
think it helped answer his question?

John H

On the 'PocoLoco' out of Deale, MD,
on the beautiful Chesapeake Bay!