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Thread: LR air strut suspension

  1. #31
    Join Date
    Jan 1970
    Location
    NSW South West Slopes
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    9,750
    Quote Originally Posted by roverrescue View Post
    BUT if they are rolling sleeve as indicated above by Graeme
    No doubt that they have a rolling sleeve - had them apart several times and have a full set still assembled.
    MY12 RRV 4.4 TDV8 AB, +LLAMS, +e-diff, +ACC stop/go. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
    VK2HFG and APRS W1 digi

  2. #32
    Join Date
    Dec 2006
    Location
    Harper Creek
    Posts
    3,313
    Sorry Graeme on re-reading my words they do seem to doubt you! Not my intention at all.
    I see they are a rolling sleeve - that generally means the springbrate is pretty constant through
    The stroke irrespective of height which might preclude the rears from my plan

    I'm looking at a bunch of "air lift" PDF at moment
    There seems to be quite o few options available through them

    S
    '95 130 dual cab fender (gone to a better universe)
    '10 130 dual cab fender (getting to know it's neurons)

  3. #33
    Join Date
    May 2017
    Location
    Melbourne
    Posts
    1
    hi steve
    I have a D4 and it uses and integrated airbag / strut
    which are a challenged to maintain
    have you considered a caravan air suspension system
    My Trakmaster van rides on air and it has separate components that make maintenance a lot easier
    mind you I haven't had to do anything with it
    just a thought
    Russ

    Quote Originally Posted by roverrescue View Post
    I'm in the planning phases of another Offroad trailer build.
    This will be another boat trailer for 5m plate alloy boat
    Always I start with the suspension and work up,
    I'm a little bored of triangulated four links from the last two builds so have two competing designs.

    Easy one is radius arms plus a panhard with thoughts to use an air strut.
    I figure that LR have dialled in Offroad durability to their struts and the overweight D3/D4 with front axle weights approaching 2tonne should be perfect for this application.

    Big question is what are the dimensions of a front strut or better still does anyone have a dead one kicking around???

    Kind regards

    Steve

  4. #34
    Join Date
    Dec 2006
    Location
    Harper Creek
    Posts
    3,313
    Thanks Russ
    Been there done that
    Last build used firestone airsprings and matched dampers

    Something different this time!!!!

    Seems there are some good air lift options that are packaged even
    Nicer than LR units

    S
    '95 130 dual cab fender (gone to a better universe)
    '10 130 dual cab fender (getting to know it's neurons)

  5. #35
    Join Date
    Dec 2006
    Location
    Harper Creek
    Posts
    3,313

    UPDATE: Saturday "CAD" session

    So this weekend I was gonna light up the old Linux LibreCAD
    But instead went with "Cutting And Dicking" around


    Dragged old trailer into shed
    It runs on rusty old hilux front leaves on a 50mm square solid axle
    With flanges welded each end that bolt up to Landy stub axles

    So I went for it and cut the old springs out , removed dampers
    And think I've decided to make a MkI radius arm panhard rod air strut
    Suspension on the old chassis

    Photos are
    -with it "slammed" teeheehee
    IMG_6116.jpg

    -At ride height
    IMG_6119.jpg

    Roughie strut length compressed
    IMG_6118.jpg

    -Then extended
    IMG_6121.jpg

    -arms at ride height
    IMG_6120.jpg

    -overview from rear
    IMG_6123.jpg

    -pure dumb luck and largely why I'm going with
    MkI on this chassis - the front radius attachment
    Lines up perfectly with one of the strongest parts
    Of the chassis
    IMG_6126.jpg

    I have the Radius arms sitting on axle for setup but thinking about it this
    geometry will keep bolts etc out of the salt - will run em high I reckon?

    Will likely pair this setup with some air lift 82107 struts
    Air Lift AirOver Shocks 82107 - Free Shipping on Orders Over $99 at Summit Racing

    Obviously chassis will need some building bracing, front radius mounts
    And panhard mounts. I'll likely lean the struts back at the tangent to radius swing but I can't
    See any negatives other than the corrosion issue!!!!!
    Will need to find a lanolin type product that is rubber safe.

    Steve
    '95 130 dual cab fender (gone to a better universe)
    '10 130 dual cab fender (getting to know it's neurons)

  6. #36
    Join Date
    Dec 2006
    Location
    Harper Creek
    Posts
    3,313
    Couple more hours at it today

    First cut out some rusty bits with the plasma

    I established what is needed for radius-chassis attachment
    Thought one was to plasma off the mounts from a wrecker d1
    But as my geometry will be top mount rather than side mount I think
    I'll just go see my metal man and fabricate some.... the link mount is 70mm diameter slug of 25mm thick steel with 39mm centre hole and inner smooth radius'. I should be able turn these up....

    Step two was to plasma out a pair of axle mounts.
    These are 5mm thick cut out of some RHS. OEM axle mounts are 5mm
    Boxed in and braced. So should be enough

    IMG_6153.jpg

    I also took a pic with a roughy old damper at "air lift 82107" ride height

    IMG_6154.jpg

    Top mount will be different - braced between centre and other chassis , but bottom mount I'm not sure whether to
    Link into radius arm mount or just make a double shear lower mount onboard of the radius mounts....

    IMG_6152.jpg

    Final plan was to sort panhard - reckon illuse the old damper axle mount leading the axle

    Sooooo now I'll just order some struts and make this happen!!!

    S
    '95 130 dual cab fender (gone to a better universe)
    '10 130 dual cab fender (getting to know it's neurons)

  7. #37
    Join Date
    Dec 2006
    Location
    Harper Creek
    Posts
    3,313
    Got some work done on the radius arm chassis mounts
    Started with some 90mm round bar in saw

    End up with a 25mm thick Slug turned to 80mm OD with 39mm ID for OEM bushes
    Still need to chamfer and tidy it up but one side is close

    Plan to then cut hole in 6mm ear shaped plates and weld slug in
    Can then tinker it into something pretty

    Slowly slowly

    IMG_6170.jpg


    IMG_6169.jpg
    '95 130 dual cab fender (gone to a better universe)
    '10 130 dual cab fender (getting to know it's neurons)

  8. #38
    Join Date
    Apr 2019
    Location
    Brisbane
    Posts
    421
    Any updates....

  9. #39
    Join Date
    Dec 2006
    Location
    Harper Creek
    Posts
    3,313
    I ended up finishing the rig
    I thought I made a post about it?

    Anyway in the end I used a pair of 80series radius arms
    Length was good and the leading pin mount was easier to fab.
    Used a landy panhard
    Mounts welded to 50mm solid axle which runs landy stub axles (un braked)

    In the end I bought a pair of double convoluted bags - it rides less softly than the previous 4 link I made which used rolling sleeves
    (A bit of geometry plus spring rates in that)
    But it still does the job
    9L air tank bolted to frame which I fill via a shraider
    Manual Paddle valves to control air in and out of bags
    From memory 9L letís me cycle up and down full stroke 4 times

    Works well - rides smooth - height adjustable is awesome

    Can post pix later

    S
    '95 130 dual cab fender (gone to a better universe)
    '10 130 dual cab fender (getting to know it's neurons)

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