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 4 of 4
  1. #1
    Platinum Member Platinum Member Smitty's Avatar
    My Boats:
    2000 Baja 36 Outlaw
    Join Date
    Apr 2001
    Hawthorn Woods IL

    Anybody break a 1.36 ratio Bravo drive ??

    Has anybody broken a 1.36 ratio Bravo drive ?? If so give me the details of your setup : I.E. How much power, V or Cat, how heavy of a boat etc.

    I'm just about done putting my motors back in and I have 775 hp and 840 ft lbs torque. I know the 1.50 ratio drives don't last long with this power level but I haven't heard of too many 1.36 ratio drives dying, probably because they are far and few but I am just curious.
    Want your ECU tuned right?? Call Mark at Precision

  2. #2
    Registered SCRAPMAN1's Avatar
    My Boats:
    2001 HUSTLER 50
    Join Date
    Aug 2004

    Re: Anybody break a 1.36 ratio Bravo drive ??

    Start Saving Up For A Stack Of Spares. The Power You Speak Of Is Way Past The Bravos Capabilities. To Answer Your Question The 1.36's Break Just As Easy. The Weight Of The Boat And The X Dimension As Well As Driving Style Has Alot To Do With It. I Have A Friend With A 30' Cat With 600 Hp Per Side And 1.36 Bravos That Has Gone Through 3 Drives In A Year And A Half Driving Conservatively. I Have A 50' V With 1.36 Bravos On 575s That Has Eaten 4 Drives In Two Years Driving Conservatively. One Heavy Boat One Light Both With 600 Per Drive Both Break Them. Hope This Helps.

  3. #3
    Registered jdnca1's Avatar
    Join Date
    Feb 2002

    Re: Anybody break a 1.36 ratio Bravo drive ??

    Convert to the "X" style gears and either Teague prop shafts or the "BIG" Mercury prop shafts. The "X" gears are far surperior to the old style...I know several running this set-up on single and twin engine cats behind 800+ hp blower motors with very few sissying around either, they run them hard.... I know of one set that went 230 hrs.

    As scarab stated, the driving style, X dimension, and weight are big variables....none of them will take flying in and out of the water at will......

    I'd have to say that most boats with big blower motors I know of run 1.36 drives, mainly due to more prop selection before running out of pitch.....
    Last edited by jdnca1; 06-14-2005 at 06:02 PM.

  4. #4
    Registered Steve Snider's Avatar
    My Boats:
    1994 Cigarette Cafe Racer
    Join Date
    Nov 2001
    Pompano Beach, Florida

    Re: Anybody break a 1.36 ratio Bravo drive ??

    The question is how long until the Bravo breaks not if...It doesn't matter what or whose gears are in the gearcase. The Bravo design of three upper gears will not sustain that kind of horsepower very long. Imco went to the concept of adding a idler (fourth gear) and it works. Unfortunately the outdrive will not shift so a transmission is required mounted in the extension box. I used to make a lot of money rebuilding Bravo drives when I had my own shop up north. I ran a 800 hp Eliminator Cat and broke a couple 1.36 drives myself. Once I was trying to back off the trailer at a shallow ramp and snapped the input shaft. All I can say is baby the drive..ease it on plane and bump it up a little at a time-rough water and airing out the drive will make it grenade when the prop reloads. Best of luck though...

Similar Threads

  1. Finding drive gear ratio on Bravo I
    By MacGyver in forum Prop Talk
    Replies: 1
    Last Post: 11-03-2006, 06:38 PM
  2. Drive break-in?
    By IRONMAN in forum General Q & A
    Replies: 3
    Last Post: 10-01-2004, 08:40 AM
  3. New Bravo 1 break-in
    By jmackin in forum General Q & A
    Replies: 7
    Last Post: 07-09-2004, 10:15 AM
  4. Bravo Gear Drive Ratio
    By Notched_Baja in forum General Q & A
    Replies: 6
    Last Post: 04-09-2004, 09:12 AM
  5. Break in on new Bravo XZ?
    By BadDog in forum General Q & A
    Replies: 0
    Last Post: 06-09-2003, 07:29 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
All times are GMT -5. The time now is 07:50 AM.
Powered by vBulletin® Version 4.2.0
Copyright © 2016 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 © 2016 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
Copyright 2011 OffShoreOnly. All rights reserved.