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  1. 04-21-2018, 07:13 AM #1
    SlumpGumpy
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    Vibration in marine master trailer

    Ill do my best to keep it simple:
    bout a 2013 triton from dealer In KY in january
    got up to 60mph on 75 and noticed a terrible vibration
    got off 75 noticed starboard rear tire had blown belts-walloped out tire
    put the spare on and continued north
    vibration still there but not nearly as bad 60-72 mph it vibrates-goes away at about 80mph
    I limped home and had 4 new 8ply Carlisle put on-figured that would solve it
    -didn’t solve problem
    whenever i get up to highway speed the vibration comes back-it comes and goes depending on speed and lane changes left to right

    -getting gas yesterday i notice that same position tire looks like it may be wearing funny on inside (400 miles tops on new tires)

    bearings checked out ok-no play
    thought about maybe having my tires balanced-haven’t done it just yet-my tire guy says they never really balance trailer tires but they’d do it for me if i want...

    I’m thinking its an axle issue:
    I measured both sides middle of the vault hub
    port side distance between vaults is 32”
    starboard side is 31”
    ***on the port side there’s enough room between the top of the tire and the fender to get my hand in there
    **on the starboard side I can barely get my index finger between tire and fender-its literally 1/2” from rubbing the top of the fender
    its almost like that axle on starboard side is bent FORWARD and UP -so to speak

    Axle doesn’t “look” bent to the human eye, but I cant really tell

    maybe the u-bolts around the leaf springs allowed the axle to shift a little bit??

    any advice where to start would help
    thanks a lot gang!
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  2. fishnfireman
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    #2 04-21-2018, 08:01 AM
    IMO---- get a new axle .. There not that expensive -- especially compared to the cost of what could happen !!!!
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  3. CatFan
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    #3 04-21-2018, 08:04 AM
    First thing would be to inspect brackets and mounting hardware. Maybe something has come loose or a weld has broken.
    If you have integrity, nothing else matters. If you don't have integrity,
    nothing else matters.​
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  4. fishnfireman
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    #4 04-21-2018, 08:53 AM
    Based on the OP.. I had given credit for having done a thorough inspection
    Never hurts to check again or get another set of eyes.
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  5. SlumpGumpy
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    #5 04-21-2018, 09:28 AM
    Had her on jackstands all winter gave it a pretty good inspection after i got her home
    no broken welds brake parts nice n tight
    I kinda agree on the whole new axle deal....probably what i should do
    how about a link for where to buy?
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  6. fishnfireman
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    #6 04-21-2018, 12:25 PM
    My advice would be to get in contact with the manufacture --- Find out for sure the exact axle if you can't ID it. Also see what there price is. It's possible you may find it local to save shipping.
    Trailer Parts Super store has just about everything made and good prices. They also have a lot of DYI info available !! Good luck.
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  7. billnorman1
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    #7 04-22-2018, 06:08 AM
    Where can you tow at 80 MPH? Are your tires rated for those speeds?
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  8. rocket man
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    #8 04-22-2018, 06:44 AM
    Vibration sounds like a Balance problem, especially at a certain speed.
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  9. Bill Reynolds
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    #9 04-22-2018, 07:06 PM
    I had this problem on my RT trailer and resolved it with Road Force Balancing. My truck has 22 inch wheels and low profile tires that I could never get to balance until I discovered Road Force Balance. Not always the solution, but may be worth considering.
    This link gives a good explanation of the process.
    BTW: The first two tire stores I called said it was a waste of money to balance trailer tires but it seemed so logical to me that I kept calling until I found someone that knew what they were talking about.

    Last edited by Bill Reynolds; 04-22-2018 at 07:11 PM.

    I try to drive as if my 16 year old Grandson is following me
    Speak as if he is listening and act as if he is watching
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  10. DABS
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    #10 04-22-2018, 10:56 PM
    2013 axle was built by UFP/Dexter in Winchester, TN Marine Master should be able to get you another axle or you can call Dexter direct at 931-967-5101 and give them the axle serial number off the plate welded to the bottom of the axle. All axles have ID plates and they can build an exact match.
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  11. fishnfireman
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    #11 04-23-2018, 09:02 AM
    Quote Originally Posted by billnorman1 View Post
    Where can you tow at 80 MPH? Are your tires rated for those speeds?
    mine are rated for however fast my truck can pull at times.----- maybe 98 MPH that's' where the truck limiter is set.
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  12. billnorman1
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    #12 04-23-2018, 01:43 PM
    Quote Originally Posted by fishnfireman View Post
    mine are rated for however fast my truck can pull at times.----- maybe 98 MPH that's' where the truck limiter is set.
    Well, there you go.

    And my truck stops running at about 99 MPH.
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  13. Islands
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    #13 04-23-2018, 03:46 PM
    Quote Originally Posted by fishnfireman View Post
    mine are rated for however fast my truck can pull at times.----- maybe 98 MPH that's' where the truck limiter is set.
    That's one way to claim an Ally has gone high 90's
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  14. fishnfireman
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    #14 04-23-2018, 04:50 PM
    Quote Originally Posted by Islands View Post
    That's one way to claim an Ally has gone high 90's
    GOT ME !
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  15. Islands
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    #15 04-23-2018, 06:24 PM
    Quote Originally Posted by fishnfireman View Post
    GOT ME !
    All in fun my friend and with complete respect for the A craft! Of all the boats I have had and sold I think the Grand Sport is the one I miss most.
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