Register

If this is your first visit, please click the Sign Up now button to begin the process of creating your account so you can begin posting on our forums! The Sign Up process will only take up about a minute of two of your time.

Follow us on Facebook Follow us on Twitter
Results 1 to 5 of 5
  1. #1
    Platinum Member Platinum Member
    My Boats:
    2000 35 fountain
    Join Date
    Nov 2001
    Location
    long island ny
    Posts
    72

    formula for prop slip ??

    can anyone give me the formula for prop slippage ??

  2. #2
    Registered throttleup's Avatar
    My Boats:
    AKA Throttle Up Propellers
    Join Date
    Mar 2002
    Location
    Cajun Country
    Posts
    5,143

    Re: formula for prop slip ??

    RPM divided by gear ratio x pitch divided by 1056 = theoretical speed

    Actual speed divided by Theoretical speed = propeller efficeincy %

    100% - propeller efficency % = % slip

    OR go here

    http://www.go-fast.com/Prop_Slip_Calculator.htm

    Julie

  3. #3
    Platinum Member Platinum Member
    My Boats:
    2000 35 fountain
    Join Date
    Nov 2001
    Location
    long island ny
    Posts
    72

    Re: formula for prop slip ??

    thank you matt and julie for your quick responce!! according to that formula my props have a 6% slip factor and my spare props have a 10 % slip factor , is this a good % of slippage??

  4. #4
    Registered hillbilly24's Avatar
    Join Date
    Oct 2004
    Posts
    1,358

    Re: formula for prop slip ??

    10% is very good, 6%, theres something wring with your numbers

  5. #5
    Registered throttleup's Avatar
    My Boats:
    AKA Throttle Up Propellers
    Join Date
    Mar 2002
    Location
    Cajun Country
    Posts
    5,143

    Re: formula for prop slip ??

    Keep in mind that the end result, of slip % will only be as accurate, as the numbers we use in the formula. So if any of your numbers are inaccurate then the slip% is not accurate. Hope this helps.

    Julie


Similar Threads

  1. prop slip #'s for B3
    By hoozeyurdaddy in forum Prop Talk
    Replies: 3
    Last Post: 11-22-2007, 08:39 PM
  2. prop slip
    By lernin-t-fly in forum Prop Talk
    Replies: 3
    Last Post: 07-19-2005, 11:43 AM
  3. Formula 357...26% slip with mirage 23's
    By offshoreratboy in forum Prop Talk
    Replies: 12
    Last Post: 07-03-2005, 11:55 AM
  4. Prop Slip
    By paradigm shift in forum General Q & A
    Replies: 4
    Last Post: 10-14-2002, 09:12 PM
  5. prop slip formula ?? help!
    By jcap in forum General Q & A
    Replies: 11
    Last Post: 09-27-2002, 11:12 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
OSO Sponsor
OSO Advertisers


OSO Directory
All times are GMT -5. The time now is 05:57 PM.
Powered by vBulletin® Version 4.2.0
Copyright © 2014 vBulletin Solutions, Inc. All rights reserved.
Search Engine Optimization by vBSEO 3.6.1
Original Poster In Postbit provided by Original Poster In Postbit v1.0.0 (Free) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
Copyright 2011 OffShoreOnly. All rights reserved.