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** Quick swtd Question **

  1. #15
    Senior Member stallion176's Avatar
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    Quote Originally Posted by sleekcrafter View Post
    Check the bottom of your keel, most all the SW tunnel bottoms, have a bad hook about 5-7 feet in front of the pump. This is not so bad for a v hull, but more of the center pod is in the water, on the mod v tunnels, causing a wetter ride.
    Sorry but what do you mean by hook? what am i looking for? 5-7 feet in front of the pump would be up past the steering wheel on my boat.. that should be outta the water while wide open

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  3. #16
    Boat Nut sleekcrafter's Avatar
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    Just put a tape measure on it and see where it is in relation to where you think it is. I swore my bottom was straight, put a six foot level on both strakes was perfect. put it on the keel center line in front of the pump, I had a 1/4 inch of hook. Move more forward on one of the strakes, hook again. Real noticable when it's flipped over, Ive seen photo of several others, with the same issue.

  4. #17
    Senior Member ol guy's Avatar
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    Quote Originally Posted by stallion176 View Post
    I have been reading up on the latest swtd thread and you guys are amazing.. This is my first swtd and have had it out all summer. Now my question.. This is a 550hp bbc with b impeller, loader, droop, hyd diverter and the ride plate that bolts on.. im getting only 82 mph on gps. is this ride plate combo i bought junk? what would be some good starting degree points for my tabs? Watch it in HI -RES Heres a wide open run... pause it as it go's by
    For what its worth go back in the jet boat forum and check swtd circa 1980 then P.M. me and I will tell you how to get a swtd to ride right. If your,e intake is not machined for a shoe and plate then that is the first thing to do. Also has any additions been added to the sponsons? M

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  6. #18
    Senior Member ol guy's Avatar
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    Quote Originally Posted by wajetboy View Post
    i agree with machining for a shoe and rideplate.
    Be carefull!!! around these parts lots of guys don't relate a rocker to a hook! M

  7. #19
    Senior Member ol guy's Avatar
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    Quote Originally Posted by sleekcrafter View Post
    Just put a tape measure on it and see where it is in relation to where you think it is. I swore my bottom was straight, put a six foot level on both strakes was perfect. put it on the keel center line in front of the pump, I had a 1/4 inch of hook. Move more forward on one of the strakes, hook again. Real noticable when it's flipped over, Ive seen photo of several others, with the same issue.
    Allow me to explain what I have been doing with boat bottoms of my own for about 30 years. In the late 70s I was schooled by a builder that boats have hook and rocker. Now look at a fishing HOOK and relate that to the bottom of a boat. Now look at a Rocking chair and relate that to the bottom of a boat. They both play a part in the ride of a boat and if you understand the theory of how bottoms work, the rocker assists the boat get off plain to on plain and also in jet boats will help load the pump. A hook is a built-in cav plate. Yes I do understand with the addition of ride plates and shoes things need to change. So in simple terms the hook will be in the last 6 to 8 inches of the boat and the rocker will be forward of the pump on the keel, different builders placed them in different areas. Now the fun begins!!! M

  8. #20
    Boat Nut sleekcrafter's Avatar
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    rocker = convex / hook = concave no confusion here

  9. #21
    Senior Member Futs's Avatar
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    But whats important here is the placement of both and WHY they were put there in the first place.

  10. #22
    Boat Nut sleekcrafter's Avatar
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    photos Courtesy of Dirt Lot Marine, you can see whats getting fixed here on the Ducky SWT [img]/http://i289.photobucket.com/albums/ll230/moneysucker/Rubber%20ducky/treboat003.jpg[img]

  11. #23
    Senior Member Futs's Avatar
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    That shit don't matter, it's out of the water anyways. Well it is on mine anyways.......

    Oh, and that boat is a turd with a no2 ferd.

  12. #24
    Senior Member moneysucker's Avatar
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    I recomend speaking with Tom over at JBP. I would not do the intake set myself. The picture above is my brother doing his own bottom and resetting his intake. The following year the boat was sent to Tom Papp Racing to have a botom put on it and the intake set correctly. There are people who have been doing this a lot longer than us and know how these are supposed to be. Money well spent having someone in the know do the bottom work and intake set.

    You may be able to get some more lift out of the rear of the boat by using a loader with 9 or so inches of blocker. I would like to see some more pix of the boat. I do love my black swtd.

    Cy
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  13. #25
    Senior Member moneysucker's Avatar
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    Quote Originally Posted by Futs View Post
    That shit don't matter, it's out of the water anyways. Well it is on mine anyways.......

    Oh, and that boat is a turd with a no2 ferd.
    Hey old man, don't get all worked up and blow out the old pace maker.
    Vinyl Graphics, Magnetic signs, Reg #s, Boat names, Banners, Boat decals, Etc. Please contact me Via facebook or e-mail [email protected].

  14. #26
    Senior Member ol guy's Avatar
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    Quote Originally Posted by sleekcrafter View Post
    rocker = convex / hook = concave no confusion here
    Like I said now the fun begins.

  15. #27
    Senior Member ol guy's Avatar
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    [quote=sleekcrafter;434277] rocker = convex / hook = concave no confusion here [/quote

  16. #28
    Senior Member ol guy's Avatar
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    What does that have to do with what I was saying! I'm not selling contact lenses. Both a hook and rocker are a convex confiuration in ralation to the bottom of a boat. I was talking about where they are located on the bottom of a boat. M

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