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  1. #1
    GT
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    27 Daytona owners

    Hey guys,

    I thought I would check with a few of you and see what kind of speed and drive set-ups you have. The reason is: I have an Out of State customer with an 05 27 Daytona/Whipple 525. The boat was set up originally with a 2" short sportmaster and the engine was installed 1" high from the factory .

    As soon is this boat starts to run over 85 mph, the prop starts to gradually blow out. It also blows out bad going on plane. At top speed with a 30 lab, the slip is over 13%!

    I would love to hear about some factual set-ups from you guys, so my customer does not waste his money on drives, spacers, props, etc............................I think all of you will agree,,,,,,,,,,,,,,,first thing: The drive needs to come down!

  2. #2
    Registered gsmith9898's Avatar
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    Mar 2005
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    tulsa, oklahoma
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    Sell me the whipple and all things should correct themselves.

  3. #3
    Registered PWRCAT's Avatar
    My Boats:
    1998 eliminator Cat/05' 27 Daytona
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    May 2004
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    Lees summit
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    why the 1" higher motor mounts? Id think its up enough with the shortie.

  4. #4
    Registered
    My Boats:
    2008 Eliminator 33 ICC Daytona
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    Jun 2005
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    IL
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    1 inch shorty Imco Extreme, 1.25 gear 30 pich prop turning 6400rpm, 10% slip with the prop we are running currently. You can figure speed, would rather not say for insurance purposes. The faster you run the more the slip seems to increase. 7 %seems to be a good number for these hulls thats were they should be when everything is right although I have seen better.
    I could not run a 2'' shorty on my boat because it was to high. We are currenty going to try adding a 1'' spacer to see if it helps our slip%.

    gsmith9898 I have quadrotor for sale if you interested Cheap!

  5. #5
    GT
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    Thanks,

    Yah, It's pretty bizarre that the boat was built with the X dimension 1" high to begin with, and then the 2" shorty was added. I would really like to see how it runs when the drive is down a little deeper. The lab props seem to be working ok for you guys?

  6. #6
    Registered throttleup's Avatar
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    Throttle Up Propellers Manufacturer
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    Mar 2002
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    St. Petersburg, FL
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    What is the make of the prop your running? If it is a Bravo I remember to use 29P not 30P. Also with your drive that high you are really set up for a 5B propeller rather than a 4B. You should try a 5B and post your data.

    Julie

  7. #7
    Registered gsmith9898's Avatar
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    Quote Originally Posted by throttleup View Post
    What is the make of the prop your running? If it is a Bravo I remember to use 29P not 30P. Also with your drive that high you are really set up for a 5B propeller rather than a 4B. You should try a 5B and post your data.

    Julie
    why 29 and not 30?

  8. #8
    GT
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    That is what I was thinking,,,,,,,,,,,,,a p5 or a p5x. I will let you guys know what he tries. Thanks

  9. #9
    Registered Cat man do's Avatar
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    ELIMINATOR
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    Oct 2001
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    Gary, Hi Is That Bruces Boat? Marty

  10. #10
    Registered gsmith9898's Avatar
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    Quote Originally Posted by Cat man do View Post
    Gary, Hi Is That Bruces Boat? Marty
    Marty, did you get the pm I sent you looking for the place you stayed last year at loto? Gary Smith


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