Fish and ski

[jpg0511]

I have a 1991 Hydra-Sport DV-180-SX fish and ski. It is about 1100lbs dry weight. It hold 34 gals of fuel and has 3 batterys. The motor is 1991 Johnson 150GT with a 14.25x21 SS prop with little or no cup on it. The prop is other wise in good shape. It came like this on the boat when i got it. WOT it will run 47mph @ about 4900rpms. But I can not get the bow up enuff to get on pad unless the boat is empty. With a few people it slows down even more. Also I had to lower the motor to its lowest point to keep it from blowing out on turns. I am not so worried about more speed but I do want to be able to get more bow rise to get on pad. I am not sure if this is the origianal prop or not. Just wanting to know if I should have the prop re-cupped and try it. Or go ahead and have it dropped back to a 19 pitch and cupped? I just dont want to pay twice. I have also seen some good deals on new props and maybe keep the old one for a spare.

 

[jpg0511]

Re: Fish and ski

Oh yeh and the motor runs great. Good compresion, carbs have been cleaned, new plugs after the sea-foam treatment.

 

[steelespike]

Re: Fish and ski

If you read the stickies here and at the prop store page it may help some.
If you add cup it may help your grip and get the bow up.It could also lower the rpm if you speed doesn't go up enough.You should be able to raise the motor back up.Having it lower it could eat up 2 or 3 mph.
If you fill out the form at the top of the page the experts here should be able to give you an idea what and if your prop needs or suggest a replacement.

 

[jpg0511]

Re: Fish and ski

I have read a bunch on the subject just though maybe someone would have a boat close to mine. But I found a new turbo 1 19x14.25 SS prop on sale so it is on the way. I use the boat more for pulling the kids on the tube a crusing so like I said top speed is not a big deal. And I will have a spare which is always a good thing.