Tow ball height.

Discussion in 'Motorhome Chat' started by big dave, Oct 8, 2015.

  1. big dave

    big dave Funster

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    I have an Alco Kober tow bar fitted to a low ride Fiat chassis my question is
    the height to the top of the 50mm ball is only 34cm from the ground and I need
    the height to be approx 44cm as I have a 4 wheel trailer to give me the correct
    ride height.
     
  2. Speve

    Speve Funster

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    you can get an adjusting plate that bolts on to your bar then fix the ball to that.
    Google adjustable tow bar.
     
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  3. funflair

    funflair Funster Life Member

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    EC directive tow ball height should be between 350 and 420 mm so it far from right, can you fit a riser plate to it or is the mounting face inside the line of bodywork.

    Martin
     
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  4. Speve

    Speve Funster

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    I should imagine it will be difficult if you have a swan neck tow bar?
     
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  5. big dave

    big dave Funster

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    Yes it is a swan neck tow bar,i will contact Alco Kober to see if they
    can help. I hoped someone else had overcome this problem.
     
  6. ciderman

    ciderman Funster

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    can you let the tyres down to lower the trailer;):whistle:
     
  7. scotjimland

    scotjimland Funster Life Member

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  8. Scotties

    Scotties Funster Life Member

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    I think that dropper plates are legal but riser plates are not.
     
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  9. DBK

    DBK Funster

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    I think you need to look at raising the rear suspension by fitting some sort of spring assisters, such as the air bag thingies.

    I don't think you can alter the tow bar, the plates suggested above are now illegal I think and a longer swan neck, even if you could get one would act like a lever and put too much force on the mounting.
     
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  10. scotjimland

    scotjimland Funster Life Member

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    are you referring to the Bulldog coupler I posted ?
     
  11. Badknee

    Badknee Funster

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    Wot 'e sed.
    Swan neck extension is a no no, but air bags would work a treat. We have them fitted and if I play about with the pressures the back end rises and falls. (y)
     
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  12. DBK

    DBK Funster

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    I don't think so, it doesn't look much like a plate. :)
     
  13. funflair

    funflair Funster Life Member

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    As others above have said, drop plates are now illegal unless the tow bar was type approved/tested with the plate, apologies for the confusion.

    Raising suspension would do it but would be quite a lift.

    Martin
     
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  14. scotjimland

    scotjimland Funster Life Member

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    So that is a no ?
     
  15. DBK

    DBK Funster

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    If you want a definitive answer ask the manufacturer, I've just checked on their website and couldn't see that product but perhaps they do still sell it secretly. But as the OP has a swan neck towball I guess it doesn't matter.
     
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  16. scotjimland

    scotjimland Funster Life Member

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    it's a height adjustable trailer coupler,,, it is not a drop plate, so it can be used with any tow hitch.. including swan necks..

    I gave a link.. http://www.bulldogproducts.net/prod...ble-couplers/IcDNSpx3DOQo2VzPHyu4IwWo1W0O0m5u

    and not illegal or sold in secret
     
  17. Steve

    Steve Funster Life Member

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    Remember that it is also importent to get the 'noise' weight on the ball correct 25-50kg but again check with trailer and hitch supplyer for correct loading.
     
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  18. DBK

    DBK Funster

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    Did I ever say it was? I was referring to drop plates and I thought I had answered that. You need to find your off switch so you can work out how stop flogging dead horses. :):):)
     
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  19. Geo

    Geo Trader - Funster

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    ScotJim has in my opinion suggested the only real solution to your problem the next viable solution would be smaller wheels on the trailer if possible
    My Ball is a standard two bolt fitting on an Alko low ride chassis and it sits at 390mm
    Jacking up suspension to tow is a non starter really.

    Illegal is a strong word, I cant see anyone being locked up for using a drop plate.
    If drop plates have such a detrimental effect on an approved tow bar, I suggest all the other toys you fasten to it, ie bike racks box carriers ect would also be "Illegal"
    Geo
     
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  20. Gellyneck

    Gellyneck Funster Life Member

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    EC Directive 94/20/EC stipulates that a vehicle in ‘laden condition’ should have a towball height of between 350mm and 420mm. Same directive states that a hitch on a trailer \ caravan should have a height of 385mm to 455mm in laden condition.

    Heights are measured to centre of tow ball \ tow hitch.

    Drop or riser plates can only be used where the towbar fitment has been approved for use of these and the vehicle has also been approved. Some Land Rovers are approved as such.

    The OP's towball height of approximately 315mm is outwith the limits (350mm min) set by the Directive. On this basis a discussion should be had with the towbar fitter to understand why the fitment doesn't comply with Directive.

    The "desired" towball height of 440mm is also outwith the limits (420mm max) however the tow hitch height of 440mm is within limits.
     
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