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Thread: Tongue strength on off-road trailer

  1. #11
    Join Date
    Sep 2005
    Location
    El Paso,Texas
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    1,434
    Have you called Tentrex about your concern ?
    Mike El Paso,TX
    Gentleman Adventure
    "Ich dien"

    1985 FJ-60
    1977 FJ-40
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    2005 Ural Gear Up
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    We sleep safe in our beds because rough men stand ready in the night to visit violence on those who would do us harm. George Orwell

  2. #12
    Join Date
    Dec 2017
    Location
    Castle Rock, CO
    Posts
    9
    Quote Originally Posted by Louisd75 View Post
    I've read about several tongue failures on offroad teardrops, but those mostly seem to be fatigue related. There's a calculator available on TNTTT that can get you into the right direction. The "offroad" calculations use the Australian design standards for offroad trailers. I haven't seen any calculations for dragging the tongue over obstacles, mostly because I think there are a lot of variables to contend with. I have seen various Australian designs that have a sort of rock slider under the tongue, but of course now that I've mentioned it I can't find any images on the Google.

    Here's a link to the TNTTT calculator page: http://tnttt.com/Design_Library/tear84.htm

    The calculator pages are about halfway down the page.
    This is friggin cool. Nice find.

  3. #13
    Join Date
    Apr 2007
    Location
    north TX
    Posts
    276
    Quote Originally Posted by JIMBO View Post
    I've pulled my TENTRAX all over the sierras and NorCa, fully loaded and LOADED PROPERLY, I've still been able to maneuver it by hand and -

    I've had the tongue load over 150 lbs--NO PROBLEMO !






    Really happy with my TENTRAX, of course alotta mods

    JIMBO
    JIMBO, many thanks. That's exactly what I was looking for, 1st hand experience. And it was good news as well! Going to be a great day I think.
    06 LJ Rubicon, soft top, 6 speed manual, CAI, Banks exhaust, 35" Coopers, Nth degree diff skids and tummy tuck, beefed up steering w skids, 2 speed 10k MileMarker hydro winch with synthetic line, Yaesu dualband (Kilo Golf 5 Oscar Romeo Kilo), Deadman recovery tool, diy rocker guards and inside shelf, Tentrax trailer - modified

  4. #14
    Join Date
    Apr 2007
    Location
    north TX
    Posts
    276
    Quote Originally Posted by Louisd75 View Post
    I've read about several tongue failures on offroad teardrops, but those mostly seem to be fatigue related. There's a calculator available on TNTTT that can get you into the right direction. The "offroad" calculations use the Australian design standards for offroad trailers. I haven't seen any calculations for dragging the tongue over obstacles, mostly because I think there are a lot of variables to contend with. I have seen various Australian designs that have a sort of rock slider under the tongue, but of course now that I've mentioned it I can't find any images on the Google.

    Here's a link to the TNTTT calculator page: http://tnttt.com/Design_Library/tear84.htm

    The calculator pages are about halfway down the page.
    Louisd75 thanks, I need to spend a little time on that page - looks to be very helpful as well as be based on tried and true experience.
    I have a degree in structural engineering from about a hundred years ago, so this will probably be like deja vu all over again
    06 LJ Rubicon, soft top, 6 speed manual, CAI, Banks exhaust, 35" Coopers, Nth degree diff skids and tummy tuck, beefed up steering w skids, 2 speed 10k MileMarker hydro winch with synthetic line, Yaesu dualband (Kilo Golf 5 Oscar Romeo Kilo), Deadman recovery tool, diy rocker guards and inside shelf, Tentrax trailer - modified

  5. #15
    Join Date
    Apr 2008
    Location
    NORCAL/NORNV
    Posts
    2,518
    As a side note Bluejeep, the TENTRAX doesn't have any structural welds in the tongue--it's an overlapping longitudinal "2" SHAFT, the length of the trailer !



    Good luck

    JIMBO

  6. #16
    Join Date
    Apr 2007
    Location
    north TX
    Posts
    276
    Quote Originally Posted by JIMBO View Post
    As a side note Bluejeep, the TENTRAX doesn't have any structural welds in the tongue--it's an overlapping longitudinal "2" SHAFT, the length of the trailer !



    Good luck

    JIMBO
    yes, one of the many things I liked about the design. In your travels, have you had the need to repair any hub or wheel bearing issues? I think carrying a spare might be wise and will most likely give a call to george for his repair kit he sells.
    06 LJ Rubicon, soft top, 6 speed manual, CAI, Banks exhaust, 35" Coopers, Nth degree diff skids and tummy tuck, beefed up steering w skids, 2 speed 10k MileMarker hydro winch with synthetic line, Yaesu dualband (Kilo Golf 5 Oscar Romeo Kilo), Deadman recovery tool, diy rocker guards and inside shelf, Tentrax trailer - modified

  7. #17
    Join Date
    Apr 2007
    Location
    north TX
    Posts
    276
    JIMBO, any pics of your spare tire mount?
    06 LJ Rubicon, soft top, 6 speed manual, CAI, Banks exhaust, 35" Coopers, Nth degree diff skids and tummy tuck, beefed up steering w skids, 2 speed 10k MileMarker hydro winch with synthetic line, Yaesu dualband (Kilo Golf 5 Oscar Romeo Kilo), Deadman recovery tool, diy rocker guards and inside shelf, Tentrax trailer - modified

  8. #18
    Join Date
    Apr 2008
    Location
    NORCAL/NORNV
    Posts
    2,518
    Nope no brg failure and Dillon gave me a SPARE pkg 11 years ago when I bought the trailer--

    Quote Originally Posted by bluejeep View Post
    JIMBO, any pics of your spare tire mount?
    Sorry, no pics but I bought a 07/11 jeep spare tire mount from JC Whitney and using 1" bar stock, I mounted it on the glass/plywood *** end, but I made sure that a (Ball less) trailer hitch, would support the spare tire weight, so it wouldn't STRAIN the glass/wood trailer-

    good luck

    JIMBO

  9. #19
    Join Date
    Sep 2014
    Location
    Durango, CO
    Posts
    21
    I've built two offroad trailers on a HF base. On both, I ran a 2X2 full length tube. Thousands of offroad miles later and both are still perfect (Tongue wise). 2X2X1/4 is plenty.

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