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  1. #1
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    On the water prop slip Application.

    Thought this may come in handy for some. Feedback is welcome. Looking to add more soon

    http://itunes.apple.com/us/app...?mt=8

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  3. Louisiana Club/ PC/Mac Tips & Tweaks Moderator barchief's Avatar
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    #2

    Re: On the water prop slip Application. (Hydrilla Gear)

    nifty little app!

  4. Member Gambler Bob's Avatar
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    #3

    Re: On the water prop slip Application. (barchief)

    Very cool.
    Gambler 2200/250 Pro XS

  5. Member LaveyT's Avatar
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    #4
    There is a free one for Droid phones as well!!https://play.google.com/store/apps/d...c.hering&hl=en

  6. Member rocketman6965's Avatar
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    Mar 2014
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    #5
    Quote Originally Posted by LaveyT View Post
    There is a free one for Droid phones as well!!https://play.google.com/store/apps/d...c.hering&hl=en
    Nice app. I use my own formula but this is faster! BTW for you gearheads, This is formula: Gear Ratio in fractions (i.e. 1.75/1=.571) x RPM x prop pitch in inches. This gives you inches per minute. Then..you divide by 12 giving you feet per minute. divide again by 5280 (feet in a mile) to give you miles per minute then x 60 to give you MPH. This is MATHEMATICALLY, but impossible to achieve because you have to account for slippage. Example: .571 x 5800=3311.8. 3311.8 x 25= 82,795. 82795/12= 6899.58. 6899.58/5280= 1.3. 1.3 x 60= 78MPH. So if somebody says they are doing 80 with a 225 Optimax stock, gearcase and a 25" prop, IT IS BS!!! Hope this helps!

  7. Member
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    #6
    Moved

  8. Member
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    Jun 2015
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    PASCO, FLORIDA
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    125
    #7
    ABSOLUTELY THE ONLY WAY TO TEST A PROP IIFIGURE 5 TO 7% SLIP YOUR HOOKED UP PRETTY DARN GOOD I ADD 1INCH PITCH FOR DOUBLE CUP ILL FIND OUT SOON 26PITCH 1.87 GEAR 6000 RPM MY SHADOW SHOULD RUN 80 IE YOU DONT KNOW PROP RPM VS SPEED YOUR NEVER EFIGURE SLIPP BALD TIRES ON A WET ROAD ART. sorry guys impossible to run 80. 75 1s correct # I WAS CLOSE RAN 74 GPS! BOAT IS GONE KEPT 220.
    Last edited by ARTS SHADOW; 06-20-2016 at 03:08 PM.

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