2wd Hack options??

Discussion in 'Hacks' started by McVick, Jun 9, 2009.

  1. pops

    pops Long timer

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    On a local sidecar motocross day out ,a few years back,one of these rocked up and did a few slow laps of the track.
    It was a barn find ,looked a total mess with only a old broken wooden box for the sidecar body. It ran beautiful .The farmer said he still used it to putt around his farm.[/QUOTE]
    Found my big four photos
    100_4444.jpg 100_4446.jpg 100_4445.jpg
    #41
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  2. Eddieb

    Eddieb Long timer

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    What about using the inner workings of a quad swingarm for 2WD? This one is a Suzuki LTZ400 Quad. I'm sure it could be cut down and made to work but it would require a fair bit of fab, the wheel would have to be fixed to the axle with the axle rotating in swingarm bearings, rather than the wheel rotating on the axle as they usually work.

    [​IMG]
    #42
  3. L_Bomb

    L_Bomb Strewth and blimey

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    I'm pretty sure quads have a solid rear axle which is no good for cornering on grippy surfaces as the inner and outer wheels need to rotate at different speeds. Quads get away with it by lifting the inside rear wheel during cornering
    #43
  4. Eddieb

    Eddieb Long timer

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    Ah ok, so Quads don't have any sort of clutch in the rear end
    #44
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  5. Jim K in PA

    Jim K in PA Long timer

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    I've seen lots of airhead swaps into Urals. Can a Ural 2WD final drive be swapped into an airhead? Does the output shaft of a Ural trans spin the same way?
    #45
  6. airheadDan

    airheadDan Been here awhile

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    The output shaft on the Ural turns the oposit way from BMW's. The pinion is on the oposit side of the ring gear. You'd need to use the Ural trans. so probably not a good idea.
    #46
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  7. claude

    claude Sidecar Jockey

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    Very few 2wd sidecar rigs have a differential. http://myural.com/servicemanual.htm
    #47
  8. L_Bomb

    L_Bomb Strewth and blimey

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    A true differential would be a lot of work to implement. A manually engaged sidecar drive would be much easier. Full time drive to the sidecar wheel would make it very hard to turn on grippy surfaces.
    #48
  9. claude

    claude Sidecar Jockey

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    2wd is nothing new. Differentials can be an issue in many ways. The ones pictured are the more common aftermarket designs seen these days.

    Attached Files:

    #49
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  10. pops

    pops Long timer

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    A lot of quads run a straight ,solid axel on the rear Eddieb.
    Both wheels ,have to turn the same.
    Some 4x4 quads like our 550 Grizzly , have independent front and rear ends with differentials.
    I can have either 2 wheel drive, 4 wheel drive, plus electric locked differentials all done at the flick of a switch.
    As L_Bomb said ,a manual engaged sidecar drive is the way to go.Plenty of small 4x4 free wheel hubs around .
    I did look into using a consistent viscosity coupling on my drive shaft , a lot of work for very little gains.
    Cheers.
    #50
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  11. Jim K in PA

    Jim K in PA Long timer

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    Thanks - thought so, and the diagrams of the Ural FD I found online seemed to show that opposite side drive.

    I have a couple of ideas for modifying an airhead FD to accommodate a right side output flange. For N.A. spec (right side mounted) sidecars.

    I suspect a mono-shock FD would be easier to adapt for a left side mounted chair. Hmmmm . . .
    #51
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  12. mantree

    mantree Been here awhile

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    I like the simplicity of the 2nd bike

    Sent from my SM-G930V using Tapatalk
    #52
  13. claude

    claude Sidecar Jockey

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    We are developing a 2wd system for a KLR.
    #53
  14. Bobmws

    Bobmws Curmudgeon At Large

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    Did you get stuck again?! :D
    #54
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  15. davebig

    davebig Another Angry Hun !

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    Ok Claude that'll be a ripper but I think Mark Twain already covered it with :
    There is no sadder thing than a young pessimist, except an old optimist. :-):-)
    #55
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  16. claude

    claude Sidecar Jockey

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    >>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<
    Mark Twain never had a KLR !!


    [​IMG]
    #56
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  17. davebig

    davebig Another Angry Hun !

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    [​IMG]
    #57
  18. sdbryan

    sdbryan Adventurer

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    I am in the process of converting a wrecked KLR in to a fat tire 2WD KLR. I am making videos of it along the way! https://www.youtube.com/channel/UCrEdyFcfeDdmSys7cMCrkiw

    It would be great to have an easy system that you could add to a newer model KLR, especially where I do a lot of desert riding through AZ sandy washes.
    #58