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 3 of 3
  1. #1
    Join Date
    Feb 2001
    houston tx

    Driveshaft alignment

    Alright guys here is a question ?

    When lining up a drive and tranny, how many angles can you have and how much ?

    The driveshaft guy told me only one angle and keep it under 9 degress.

    He also said it is important for the flanges to be at the same angle.

    Input please.

  2. #2
    Platinum Member Platinum Member Steve 1's Avatar
    My Boats:
    Slippery when wet!
    Join Date
    Apr 2001
    Beautiful Fort Lauderdale
    The most important thing is to keep the shaft “Faces” Parallel, Now for the run out in degrees from the drive flange to the driven flange (or deflection) After 0 degrees remember that the universal joint is not a constant velocity joint (which would be two Universal joints coupled close together): If there is”More than zero angle” between the input and output and when input is a constant rate then the output will accelerate and decelerate twice per revolution. This effect can be next to nothing for small angles but as the angle increases it can cause a felt*vibration or worse
    LOL now with that said when rigging the Original Popeye’s Super boat we needed 8-10 degrees on the driveline behind the front motor to shoot past the rear engine to the tailstock and there never was a problem that I heard of, even with the severe angle and the Race engines beating against them.
    * The vibration looks kind of like a sine wave .if you were to graph it.

    Best Regards

  3. #3 Gold Member shifter's Avatar
    Join Date
    Dec 2001
    newport beach,ca
    Stay away from zero angle, it will burnell the crosses. You need some angle to make the needles go around in the caps. Depending on rpm and shaft length is how much angle. I have seen boats with 18 deg. Most joints will run with a higher angle but not at the rpm and a fixed angle(offroad)
    You can get away with alot, just make sure that the shafts are set up for high speed balance and make sure the balance weights are welded on well not just spot welded.
    The lower the angle the better. We shoot for 1.5 deg for 7600 rpm.
    good luck.
    pat W
    Unique Drivetrain Solutions for High Performance Vehicles
    2007 US1 National Champion SuperCat/ 2007 World Champion SuperCat / 2008 P1 Supersport World Champion / 2011 World champion Supercat

Similar Threads

  1. driveshaft flange
    By tgersx in forum Wanted
    Replies: 3
    Last Post: 06-07-2008, 01:27 PM
  2. Driveshaft o-rings
    By Knot 4 Me in forum Drives and Lower Units
    Replies: 4
    Last Post: 05-12-2008, 09:49 AM
  3. Used Outboard Driveshaft?
    By tj309 in forum General Q & A
    Replies: 7
    Last Post: 10-27-2005, 10:35 AM
  4. Driveshaft Dyno
    By cobra marty in forum General Q & A
    Replies: 5
    Last Post: 05-05-2003, 08:08 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 03:39 PM.
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.