RandyatBBY is building a Whiplash

[RandyatBBY]

Ya you read it right. In P LTD Sport Hydro I have had been having a hard time winning so in the spirit of if you can not beat em Join em! every time I get my Frankenstein Sport Hydro going as fast as the Whiplash 20 I burn up a motor. Hence the decision.
The Start of the build.

[srislash]

Just be up to driving skill then Randy. Your experience should get you back up front.

[T.S.Davis]

haha Looks like how I do it. Random crap from all over the shop for weight. Sometimes I'll have old cans of paint perched up there.

[Shooter]

Whaaaaaaaat? I never thought I'd see the day! ha!!!

I'm still running mine! Awesome boat for P Ltd!!

[RandyatBBY]

Never too old to learn something. On a good day I drive well. If I am a little dizzy (blood sugar off) I can get confused as to the correct direction to turn. Not fun. I never thought I would run one either but it is a good exercise for the mind. Ya I wanted to use a POS vise but could not find it.

What do you guys like for CG on this hull?

[TRUCKPULL]

CG

Center mass of turn fin.

Larry

[T.S.Davis]

It's been almost 10 years since my last Whip build. Not sure where the CG wants to be.

Of late on all my sports I've been running CG at the leading edge of the fin and as close to the trailing edge of the sponson as I can get both.

[RandyatBBY]

I guess I will have to just test after it is in the water.

[rayzerdesigns]

My cg is at trailing edge of turnfin at the top of turnfin...

[Shooter]

One cool thing I learned was that if you move the fin forward, it becomes more effective, and vice versa. It's due to the fact that the centrifugal force creates a moment that 'rotates' the boat. Fin too much forward and it hooks. My leading edge of the fin (at the water line) is at the cg.

[RandyatBBY]

Making a little progress. Lot to do. Thanks for the info guys
Both sides.jpg
I really wanted to be able to check the center of the nose for plum. so I added the the bottom board

[ray schrauwen]

Are you going to skin it in the stock 1/16" ply sheet or go to 1/32" ply?

[RandyatBBY]

Are you going to skin it in the stock 1/16" ply sheet or go to 1/32" ply?

I am being real weight cautious with this build. But strength is important too. I have always used 1/32 for decking on riggers so I do not see why it would not work hear. It is not the deck of a hydro.

[ray schrauwen]

I have a kit sitting her and was thinking what to do with it and I might build it if I ever get other stuff done.

How about the bottom, still using the 1/16" or 1/32"?

I figure the bottom is better to be 1/16" but I dunno??

[RandyatBBY]

I have a kit sitting her and was thinking what to do with it and I might build it if I ever get other stuff done.

How about the bottom, still using the 1/16" or 1/32"?

I figure the bottom is better to be 1/16" but I dunno??

At present i am going with 1/16 for the bottom