Thread:

rooster tails and porpoising...

Originally Posted by Some Kind Of Monster

What kind of boat / pump? What angle is your rideplate at? Is there any hook in your hull?

i ran into this same problem when i de-hooked my boat.when i had alot of hook i could be in the full up position all day not anymore.

1 solution id to jack the ride plate down this has helped some peeps.wish you luck and these fellas will help you out.travis

Seriously, more HP.

More HP equates to more output pressure, which will set the boat more firmly against the ride plate, which stops the porpose.

I can run full up diverter with less than full throttle only on absolutely perfect water. Any chop at all trying to cruise with it up makes her porpose. Full throttle will carry the bow, but less pressure will not.

You could also lower the ride plate some, to not allow the boat to nose up as high before getting a good lean against the ride plate. This may help as well, but may cost you top end speed.

My boat will porpoise if I raise the diverter in the 3k-3500 rpm range. Trim it out (get rid of the rooster) or throttle down.

unless you have a serious hook in the hull,i would look into ride plate adjustment.make small adjustments untill you get it right,i wouldn't just jack it allthe way up or down.i would drop it about 1* at a time.

Originally Posted by SmokinLowriderSS

Seriously, more HP.

Thats what works for mine. Not so much HP, but throttle. I porpoise at full roost from 2800 to 3100 rpm, (32 mph), but more throttle gets its right to full speed and full throttle.

Muahahahaha! Not sure what the bowtank comment was about, mine has one & I can still throw a pretty healthy tail.

Originally Posted by Devilman

Muahahahaha! Not sure what the bowtank comment was about, mine has one & I can still throw a pretty healthy tail.

I was wondering the same thing. What does that have to do with the price of bread in China?

Bowtank adds weight to the front of the boat

Originally Posted by Wet Dream

Thats what works for mine. Not so much HP, but throttle. I porpoise at full roost from 2800 to 3100 rpm, (32 mph), but more throttle gets its right to full speed and full throttle.

That's really more of what I meant. I have the same effect, no porpose at full throttle, but less throttle and it happens, and I don't have rocker in my case.

If it's porposing at full throttle, takes adjustments, or more maximum power to stop.