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Thread: Simplicity offroad caravan suspension

  1. #11
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    Quote Originally Posted by roverrescue View Post
    Weeds
    You can have air springs and solid axles no problem at all


    S
    How available off the shelf?

    Still trying to talk the bride into the Offroad boat (or ski) trailer than I’ll pick you brains on air struts on a solid v bagged Independant

  2. #12
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    Dec 2006
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    First Philip
    Your trailer behaves well on corrugations not because of independent setup (truly inspite of it)

    If you correctly balance load carrying ability and suspension compliance with a solid axle you too will have the same ride characteristics PLUS left right balance.
    Not all independent setups ride well- many surge all over the track left to right as the load is pitched left to right with no cross over load path.

    Weeds you pretty well highlight the issue at hand!

    The “trailer industry” is pretty shallow. Near enough is good enough and because we generally don’t ride in our trailers in Australia no-one really cares !!!

    The industry wants as much cross platform compatibility and small engineered packaging size - actual performance is Barely considered.

    For an easy example - have a look at the rear spring pack of an XD falcon wagon ... semi elliptical long leaf pack rates to about 1200kg - compare that to a 1200kg spring pack you buy at a trailer shop... may as well just weld the axle to the chassis and air the tyres down - I am serious.

    So to answer your question I’m not aware of a in Australia of a commercial trailer based
    Multi link solid axle air spring setup

    BUT there are lots of options to get there
    -Either scalping parts from known good vehicle geometries
    -Building multi links from scratch
    -buying multi link kits and axles from US supplies like Currie or RuffStuff etc etc etc

    Steve

  3. #13
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    and yet, apart from home grown setups, this welding/leaf spring setup is exactly the route you want us to go down,,
    I'll keep my 30 year old 4 wheel fully independent setup thanks.
    and I will take a bucket load of convincing not to go this way on our next van too... not everyone is convinced by shiney benchtops. ( not that new vans HAVE any benchspace... )
    That simplicity stuff is just wrong...
    "How long since you've visited The Good Oil?"

    '93 V8 Rossi
    '97 to '07. sold.
    '01 V8 D2
    '06 to 10. written off.
    '03 4.6 V8 HSE D2a with Tornado ECM
    '10 to '21
    '16.5 RRS SDV8
    '21 to Infinity and Beyond!


    1988 Isuzu Bus. V10 15L NA Diesel
    Home is where you park it..

    [IMG][/IMG]

  4. #14
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    Pedro
    Tandem axles are a whole different barrel of fish
    Does your trailer have any load share between front and rear axle
    What is your ATM

    The simplicity is a morph of walking beam suspension which worked well in truck trailers for nearly forever

    I personally wouldn’t use them as the spring rate will likely be high and compliance low

    But I’m always interested in the choices people make

    S

  5. #15
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    Yep,, seen the walking beams on older trucks,,
    and with weight carrying on trucks the main objective I can see why they were used.

    4 wheel independent. no load sharing.
    ATM around 1800?? Why the??,, In 1990 vans didnt need one, The one I put on the van has departed at some stage, the info is actually on here, somewhere.
    "How long since you've visited The Good Oil?"

    '93 V8 Rossi
    '97 to '07. sold.
    '01 V8 D2
    '06 to 10. written off.
    '03 4.6 V8 HSE D2a with Tornado ECM
    '10 to '21
    '16.5 RRS SDV8
    '21 to Infinity and Beyond!


    1988 Isuzu Bus. V10 15L NA Diesel
    Home is where you park it..

    [IMG][/IMG]

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