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 2 of 2
  1. #1
    Registered
    My Boats:
    Formula 311 SR1 1987
    Join Date
    Aug 2005
    Location
    Panama Rep of Panama
    Posts
    36

    Angry TRS GEAR RATIO "Which would be the best ratio for 540 HP engine.)

    Hi I own a formula 311 1987 with Trs Drives and Borg W Transsmisions and i have upgraded my engines to 540 HP.s but only getting 69. MPH out of the boat with my previews 420 engines I was getting 57 MPH so I am starting to think they maybe something wrong with the gear ratio of my boat the 69 MPH speed was achived testing with 25 P Mirage blades at 4900 RPM,s and should go up to 52,00 any suggestions I feel something is not workiing correctly or substracting power from the end formula.


    Any suggestions

  2. #2
    Offshoreonly Advertiser Offshoreonly Advertiser bbladesprops's Avatar
    Join Date
    Jun 2003
    Location
    Princeton, Wisconsin
    Posts
    3,132

    Smile

    A 12 mph gain for 240 HP is actually pretty good.

    Labbing the propellers could raise your rpms 200-300 and get you over the 70 mph hunp.
    Brett Anderson / BBLADES Professional Propellers
    920-295-4435 http://www.bblades.com/


Similar Threads

  1. trs gear ratio
    By flashhat in forum Drives and Lower Units
    Replies: 5
    Last Post: 03-15-2008, 06:52 PM
  2. trs gear ratio
    By 454captiva in forum Drives and Lower Units
    Replies: 3
    Last Post: 09-24-2007, 06:46 PM
  3. Replies: 0
    Last Post: 06-11-2007, 11:01 PM
  4. b1 gear ratio
    By sandcraft in forum Nordic
    Replies: 1
    Last Post: 08-15-2006, 06:54 PM
  5. Which gear ratio is better???
    By aTX427 in forum General Q & A
    Replies: 15
    Last Post: 12-31-2004, 10:32 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 08:42 AM.
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.