Looking For Pat
 

Pat,
A reminder that I purchased the 25' tantrum that was built for Smith Bro Racing. I have been trying to get rid of the porpoising that I get from this boat and was going to have the hull looked at. What is the specs for my hull, hook, no hook and if any hook what would you of put into it when you built it?
I'm trying to get this boat to settle down with out loosing any of my valuable speed.
Looking forward to hearing from you.
Thanks in advance,
Mike

Re: Looking For Pat
 

That was a great boat. I bought it from Pete Smith. It would porpoise at wide open throttle about 77 mph. Remember it is only a 25 footer.... At those speeds the only thing that is in the water is the prop....There was one thing that I used to do when it would porpoise like that..........slow down and drag some tab... :D

Re: Looking For Pat
 

I know Gordo has said his 25 AT gets a little porpoise in dead calm water. He said it goes away with a little chop in the water.

Re: Looking For Pat
 

Thunderdan,
Good to hear from you. I'm looking for perfection with this boat. I want my cake and eat it to. I can't believe that the porpoising can't be dialed out of it and that is the road that I'm on.
I appreciate your feed back and any thing that you can add on coming up with the answer to my problem I would appreciate it. That is why I'm looking into the hull.
Thanks,
Mike

Re: Looking For Pat
 

Griff,
Gordo does experience some porpoising with his on smooth water. I have mine all the time at upper speeds. Drop tabs scrub speed. That takes all the fun out of it trying to go fast.
Looking for Pat to let me know what they do on factory hulls on these boats and how they perform.

Mike

Re: Looking For Pat
 

Mike,

Not quite sure what to tell you other than make sure the keel and strakes are straight. If you have a box, which I think you do, maybe it is upsetting the apple cart.

Pat

Re: Looking For Pat
 

Pat

How is my 33' coming along ?? :drink:

Can I get a pair of tix for the Miami show ?? :D

Re: Looking For Pat
 

Blane,

Did you step up to the 33?? If so, congrats..

Re: Looking For Pat
 

Blane,

In one word: 'nicely'. Quite honestly it is a total hot rod.

Now, are those tix into the show or tix on a plane?

Pat

Re: Looking For Pat
 

Pat,
I removed the box last year do to the fact that I thought it would eliminate the porpoising problem but it didn't.
The question that I have for you is should the hull have any hook or rocker in it, either side? There is some hook in the port side but not in the starboard side. I'm looking to get the hull back to Active Thunder standards.
Could you get back to me on this?
Thanks,
Mike

Re: Looking For Pat
 

Already got plane tix today, just need show tix my friend :drink:

Re: Looking For Pat
 

Greg

I have not, as I would plan on selling the SW first, but I am VERY interested in the boat and will be in Miami come February with hopes of seeing the new 33' there :D

Re: Looking For Pat
 

I am not sure about the hull, but I am pretty sure it was blueprinted when it left the factory. It is possible that the hull now has something in it as I think it has spent most of its life on a trailer.

I know that Rick also experimented with the box on and off but did no see any change.

I would see the porpoising when I was at WOT, trimmed up. I would drop the tabs(they are still the big 380's correct) just a little and it would settle right down as I am sure you already know.

Good luck

Dan

Re: Looking For Pat
 

I bet that 33 is going to run fast, and handle like it is on rails.

Re: Looking For Pat
 

You are probably right and I am thinking twin 625 Ilmors would be a nice package and setup for that boat or maybe Whippled 525's !! :evilb:

Re: Looking For Pat
 

Will let you know what it does with 525's in Feb. Should be in the low 90's.

Re: Looking For Pat
 

It's never that warm here in February.....

Re: Looking For Pat
 

I would think so. I bet it would dance in the upper 90's with 625 hp. :D

Re: Looking For Pat
 

Very funny FL boy!

Re: Looking For Pat
 

Dan,
Yes the boat still has the 380 tabs on it. Rick (rsteiny) never did end up removing the box while he owned it, I did after I purchased it.
To remove the porpoising I have to use a lot of tab which scrubs serious speed and you still can feels it's urge.
What I'm looking for from Active Thunder is what do they recommend for my hull, slight hook, flat with no hook, etc.
I want to have some one look at it to see if this is what is creating my porpoising problem.

Thanks again,
Mike

Re: Looking For Pat
 

Re-read.

Re: Looking For Pat
 

Mike,

I don't have the answer about the hook on the hull but I will tell you this. I run a AT25 at around 82mph WOT. The boat tends to porp. very little in smooth water but is fine in a little chop. I lower the K-planes till they are the same angle as the bottom of the hull and it stops. I have only lost around 1 mph by doing so. That still blasts past any other manufacturers 25 out there. What type of prop are you running?

Re: Looking For Pat
 

Because you extended the running surface. It ideally should be straight.

Which boat do you have?

Re: Looking For Pat
 

BlueBayou,
My porpoising isn,t light and dropping my tabs enough to control it I loose 4 to 5 mph trying to control it. My prop is a 28 bravo 1 that was labed by mercury racing. If you put a 4' straight edge on the bottom of your boat running it from the transom toward the front of the boat do you have any hook visible (gap between the straight edge and bottom of the boat) on either side?
Thanks,
Mike