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Thread: 3500kg ADR towbar

  1. #1
    Join Date
    Dec 2007
    Posts
    257

    3500kg ADR towbar

    Second fit of the prototype. The production ones will allow refitting the pintle if desired (stiffeners to the sides instead of centre) and will have 2 bolts on each outrigger (the 6 holes on the prototype allowed us to find the best positions).

    I plan on using a Hayman 21126 TBM

    Any interest?

  2. #2
    Join Date
    Oct 2008
    Location
    Heart in the Deep Nth of FNQ,Body in the Deep Nth of Brisneyland
    Posts
    1,621
    Russell, couldn't tell from the photos; do the outriggers require ruling our have you outlawed existing holes to mount?
    IE, what mods required for fitting?
    Looks like an thoughtful design!
    Cheers, BDave.
    Replace "You are...!", with "Are you...?"

    Army Land Rover Buyers Guide.
    buymilitaryvehicles.com

    Reunited with RFSV 51 680, 'Sleazy'!!
    '00 VeryDisco TD5 Auto,
    Nanocom Evo for D2 TD5 and Puma
    Gone:RFSV, 51-699, Carryall 48-358.

  3. #3
    Join Date
    Nov 2009
    Location
    Western Victoria
    Posts
    14,132
    Yep.
    Any plans for the 6x6?

  4. #4
    Join Date
    Dec 2007
    Posts
    257

    pics

    I had tried to upload the pics straight from my phone but they disappeared into the ether. Here's try no 2.

    I have no plan for a 6x6 bar

    The outriggers use 2x 12mm bolts each side. The engineer states that these holes do not affect the strength of the chassis rail. Currently the plan will be to either use a spreader plate on the other side of the rail vs a 16mm O/D spacer.

    In terms of modification, I have an approved plan to increase the seating capacity to 8 (in my case by fitting a station-wagon body) and also to certify the GCM at 6700.

    In Tas, seating at 9 or more needs a commercial bus level of compliance. Standard "county" seats and anchors easily meet the requirements for 8 or fewer.

    There is NO certified standard GCM for the Perentie which has caused mucho confusion with some individuals saying that the "county" diesel GCM can probably be used (either 6700, 6900 or 7000kg depending on the data source). My engineer has calculated that 6700kg GCM (3500kg trailer weight) is safe with the Perentie chassis and the authority has agreed with the plan to modify along those lines.

    We are interested in whether others might be interested in a tow bar- once an idea of volume is available then Aaron can indicate the price point
    Attached Images Attached Images

  5. #5
    Join Date
    Oct 2008
    Location
    Heart in the Deep Nth of FNQ,Body in the Deep Nth of Brisneyland
    Posts
    1,621
    Russell, by solving the lack of rating, I would expect that asking the same price as a commercial tow bar wouldn't be unreasonable.
    I've had a few inquiries about tow rating.
    Cheers, BDave.
    Replace "You are...!", with "Are you...?"

    Army Land Rover Buyers Guide.
    buymilitaryvehicles.com

    Reunited with RFSV 51 680, 'Sleazy'!!
    '00 VeryDisco TD5 Auto,
    Nanocom Evo for D2 TD5 and Puma
    Gone:RFSV, 51-699, Carryall 48-358.

  6. #6
    Join Date
    Feb 2013
    Location
    Sunshine Coast
    Posts
    794
    I'm very interested! I'll have to go have a crawl under my wagon to ensure the fuel tank leaves enough room for the bolts. I'm sure it will, I will have to remove the tank to fit though.

    Edit: Two questions - Is there any chance the bar could be supplied galvanised?
    Is there any chance the design of the towbar could be changed to allow for fitment of the pintle hook as well? I envisage this would mean duplicating the central vertical gusset and relocating to either side of the rear crossmember mounting surface, like on my current - very light duty - setup.

    1983 Range Rover (gone)
    1997 Defender 300tdi (gone)
    1984 One Ten Hardtop (gone)
    1987 Perentie GS - 48-010
    1989 Perentie GS/Defender Station Wagon - 49-514
    1993 Discovery Tdi 5 dr

  7. #7
    Join Date
    Dec 2007
    Posts
    257
    Dervish

    1 the plan is for production bars to allow refitting the pintle (see my first post).

    2 I can see no problem with galvanising- I'll pass that on to Aaron.

  8. #8
    Join Date
    Feb 2013
    Location
    Sunshine Coast
    Posts
    794
    Quote Originally Posted by rfurzer View Post
    Dervish

    1 the plan is for production bars to allow refitting the pintle (see my first post).

    2 I can see no problem with galvanising- I'll pass that on to Aaron.
    Apologies on the poor reading comprehension, I got excited I'm a definite yes.
    1983 Range Rover (gone)
    1997 Defender 300tdi (gone)
    1984 One Ten Hardtop (gone)
    1987 Perentie GS - 48-010
    1989 Perentie GS/Defender Station Wagon - 49-514
    1993 Discovery Tdi 5 dr

  9. #9
    Join Date
    Jan 2012
    Location
    Yanchep Western Australia
    Posts
    319
    Well done rfurzer. It looks very nicely put together and similar to my set up in some of your design. Very nice welding job too!

    Below is the set up under my RFSV. I designed it so that there where no holes that needed to be drilled into the chassis as I didn't want to break the galvanising. I used M12 high tensile bolts and plates to clamp the rear support to the chassis. It works well by stopping any leverage that could be caused by the push and pull of a trailer by bracing the towbar back to the chassis. The pintal hitch can also be fitted and still maintain full rotation. I galvanised it all as well.

    I have pulled my 2 ton trailer with it full of firewood and it is solid. My other main design criteria was that my 2 ton trailer sat nice and level on the ball which it does.

    Have I read right that your set up has been ADR approved to 3500kg's?

    Regards Warrick.













    "Any intelligent fool can make things bigger and more complex....It takes a touch of genius and a lot of courage to move in the opposite direction."
    Albert Einstein.

  10. #10
    Join Date
    Dec 2007
    Posts
    257

    3500

    Yes Warwick, Aaron has the 3500kg ADR.

    Your bar is very nice too!

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