MikeG wrote:
I have a 17 ft, older trihul. The more throttle I give the more the bow
stands up. I was reading recently about planing. Would my boat be
considered a displacement boat? or is it just set up wrong.

The boat has a Volvo 140 i/o with now trim tab. There are some "trim
plates" on the back.

Also, am I missing some "trim" thing on my outdrive? Something like this
http://www.cabelas.com/cabelas/en/te...jpg&hasJS=true

Thanx,
Mike



Go to a prop place & they'll oft allow you to try different props, try
one with less pitch.

It sounds like your engine can't get enough revs up to make enough HP
at low speed. Try a prop (borrow or second hand just to test) with lots
less pitch if the engine can then run out to high revs from a standing
start, you can be sure you actually have HP available. Then a boat that
size even as stern heavy as it probably is, should get out of the hole.

Once you've established that is the prob. then you can either find out
why over time the engine can no longer generate enough HP low down (can
just be a combination of lots of little things & even a good tune up
won't overcome old age, applies to people too:-)) So maybe then get a
new prop with a lower pitch, this will mean a slightly, very slightly,
lower top speed & more fuel use at cruise but other than that the engine
will have an easier time.

K