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Thread: SX rear suspension idea

  1. #1
    Join Date
    Jun 2003
    Location
    Anchorage/Homer, Alaska
    --
    480

    SX rear suspension idea

    I'm sure many of you have seen the thread (in my signature below) about my SX and the extended swingarm I put into it. I have another SX I would like to build up like my first, including the same extended swinger and 25 inch tires. But why not upgrade as I build my second SX!

    What I am wondering is could I use the lower TRX shock mount to mount my shock? On my SX it sits almost six inches farther back than where the lower end of the shock is mounted currently. Upper SX mount to lower TRX mount is 16 inches. Using the TRX mount would angle the shock back quite a bit... doesn't that nearly vertical shock on the SX give it that stiff ride? An angled rear shock gives a smoother ride right? I'd have to move my battery, but I already have a solution for that.

    I don't expect to get much more in suspension travel (the u-joints on the driveshaft limit that) but I would like to try and get a smoother ride. By smoother ride I mean softer landings on jumps and aggresive trail riding (Fast!). So, will angling the rear shock help and what sort of shock in a 16 inch variety could I use?

    Let's hear some ideas!
    15T3FN1 CE/FI/SI with a Class A; Some of you might know what that means.



    1986 ATC 200x, Gathering parts for a 200sx build.
    1985 ATC 250SX 25" tires, extended swingarm, snorkel and other mods for Alaska adventures.
    1985 ATC 250SX, Big plans for this one...
    1985 ATC 250ES, Big Red
    1984 ATC 125M's, 1.5 of 'em
    1983 ATC 110, BLUE!
    1974 ATC 70 Pink?

  2. #2
    Join Date
    Mar 2006
    Location
    PA
    --
    3,515
    moveing lower mount back will make it stiffer....or should

    thats how my steering stabalizers work....the closer to the stem the softer it is....the farther away from the stem the stiffer
    80s......185 atc, Yamaha tri-moto 200, 85 200x with tons of work
    90s......89 Suzuki quad racer 250 (raced 250 A class for 6 years, late 90s.. custom framed 250x with long travel shocks and a built 350x motor.... built Honda 110
    00s...... chomeoly framed 350 RX with all the goodies (thanks to my bro)
    2012.....Replaced the 350x motor for a 444cc YZ426
    WWW.HREATV.COM

  3. #3
    fabiodriven's Avatar
    fabiodriven is offline Aspiring romance novel cover model, and the Official 3WW slayer of thieves and swindlers. Catch me if you can
    Join Date
    Jun 2008
    Location
    The woods
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    10,515
    I understand what you're saying. I'd bet it would be smoother. You never know for sure though until you try.
    85 Tri-Zinger 60
    85 ATC250SX
    86 ATC250SX
    87 ATC250SX
    02 XR650L conversion
    84 ATC 480R

  4. #4
    Join Date
    Mar 2006
    Location
    PA
    --
    3,515
    moving it back give less leverage and speeds up the shock shaft and stiffen it
    80s......185 atc, Yamaha tri-moto 200, 85 200x with tons of work
    90s......89 Suzuki quad racer 250 (raced 250 A class for 6 years, late 90s.. custom framed 250x with long travel shocks and a built 350x motor.... built Honda 110
    00s...... chomeoly framed 350 RX with all the goodies (thanks to my bro)
    2012.....Replaced the 350x motor for a 444cc YZ426
    WWW.HREATV.COM

  5. #5
    fabiodriven's Avatar
    fabiodriven is offline Aspiring romance novel cover model, and the Official 3WW slayer of thieves and swindlers. Catch me if you can
    Join Date
    Jun 2008
    Location
    The woods
    --
    10,515
    Moving it back would stiffen it. However, he said the shock would be at quite an angle. I'd have to imagine if the shock is at as much of an angle as he says, it may work OK. Or maybe not...
    85 Tri-Zinger 60
    85 ATC250SX
    86 ATC250SX
    87 ATC250SX
    02 XR650L conversion
    84 ATC 480R

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