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18 Hewes Performance

Old 12-02-2013, 07:00 AM
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Default 18 Hewes Performance

I have a good friend with a '97 18 Hewes lappy with a 130 Yamaha. We recently fished in the keys and we came to the conclusion that the prop that is on it really sucks. The motor is mounted on a jack plate, and the prop just has no bite and ventilates all the time. There are no markings on it what so ever and we did not have a chance to run it wide open trimmed out given the conditions to get an accurate performance indication. On top of that, the prop just blows out when you trim it anyways (no bow lift at all, which seems like that boat needs).

Is it safe to assume that this would be about a 45 mph boat with that motor on it and a moderate load? I have been in one with a 150 Pro V yamaha and it was a 50 mph plus boat, but I know the 130 is no where near that level of performance.
Old 12-02-2013, 07:33 AM
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It sounds like the motor is set too high. Got any pictures?
Old 12-02-2013, 08:01 AM
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Lower the jack plate, blowout suggests the position of your motor is wrong, not that your prop is wrong.
Old 12-02-2013, 08:09 AM
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Joey.....with a light load that boat will certainly do 43-45 ish with the 130. I would put a turbo fx4 prop on it ASAP. It is a great four blade for four cylinder engines. Great performance at high jack plate levels. This prop will hold you to the water too! Bottom line is most props do not effectively allow you to use the benefits of a jack plate. With the correct prop all your stated problems are solved. The above comments are incorrect as the purpose of a JP on a flats boat is not to run the prop buried to accommodate a poor matched prop to the setup.
Old 12-02-2013, 09:32 AM
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Sundance... what you've described is the exact reason I don't like jackplates at all. The plate adds a whole addtional layer of complexity in figuring out why a hull isn't running properly (is it the motor height? is it the prop? is it the setback? is it your running angle? ) If you can find someone that really knows jackers and how to set up and run one properly.... you're doing better than me. Please post up your eventual solution.

Maybe I'm just too simple but as a guy who's on the water more than off of it at times -I avoid jackplates like the plague (and whenever I run a customer's boat equipped with one I'm never sure whether I'm doing things the best way at all...).
Old 12-02-2013, 09:35 AM
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4 blade.

Call Marcus @ Powertech Props

marcus@ptprop.com

Last edited by Think Done Deals; 12-02-2013 at 09:37 AM. Reason: add email
Old 12-02-2013, 09:41 AM
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Take the prop off and look at the inside. It will have markings usually some letters and numbers. Google it and that is the prop. Was the same thing for my hewes
Old 12-02-2013, 11:00 AM
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I've got an intimate knowledge on how to set up a boat to run with proper height/prop, etc., you just could not move the plate much more than 2" without the prop letting go, and forget about trimming it for bow lift regardless of setting. The engine was mounted all the way down on the jack plate and was a 6" setback, plenty of setback already into the hull, so it should not have run like that with a good prop.

I looked at the prop, it is an elephant ear looking stainless with little cup and a low rake, definitely not a bow lifter or one that would bite. I just need to know more or less what speed the boat will run setup right so I can order a prop, thinking a 19 Trophy Plus or Laser II, gonna get a couple Merc demo props to mess around with as I can get way better pricing through Merc than PT, 5500 with the 2:1 ratio and 10% slip is 45 mph. The whole point of having a JP on a flats boat is to be able to get up and run when there's no water, this prop defeats that purpose as the boat won't even get on plane unless the engine is tucked and plate buried.
Old 12-02-2013, 11:06 AM
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I had the same problem on a Maverick boat, 4 blade stern lifting prop took care of it.

One call, fixed.
Old 12-02-2013, 11:14 AM
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Has this boat say in the water a long time? Is it possible thar it is waterlogged and extremely stern heavy?
Old 12-02-2013, 11:26 AM
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I have a 2000 18 Redfisher with the 130. I get 52 MPH all day long with a moderate load. that is with the jackplate almost all the way down and it trimmed out to about 40%.
Old 12-02-2013, 12:58 PM
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Orderd a 19 Trophy Plus, will let you know the results!
Old 12-06-2013, 08:21 PM
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Default Turbo fx4

I have a brand new fx4 with a yamaha hub for sale. It is an 18 pitch. Ran it one time and sold the engine. Let me know if you all are interested.

http://www.thehulltruth.com/parts-fo...prop-sale.html
Old 12-07-2013, 04:22 AM
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I would call Power tech props. I tried several props from them and they let me exchange. I ended up with an OFX3 Its a 15 1/4 x 19. I have no jack plate. I am very happy on the setup you see in my sig. Moderate load 53 mph at 5900 rpm. Jumps right up. The guys at Power Tech were very helpful. Good luck

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