Lowered Suspension: An Engineering Perspective.

Discussion in 'Lowered' started by Dubstep Shep, Dec 19, 2016.

  1. Dubstep Shep

    Dubstep Shep Senior Member

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    They're not really anything special.

    Adjustable control arms are a pretty straightforward deal.

    You can buy threaded, weld on inserts to put on DOM tubing and then just have one right-hand thread and one left-hand thread end to put on. They even make forged ends with poly or rubber to thread into the arms themselves. That's what I'm looking into currently, and depending on how it's done, you may be able to use the same arm with different ends, meaning you could run poly on the same arm as rubber or even solid. That's a big cost reduction in the end.

    This place sells the threaded tube inserts: http://www.barnes4wd.com/Tube-Inserts_c_16.html

    Here's what I'm talking about with the different ends. This place sells both solid and rubber threaded rod ends, so you could use either.

    Pics:

    Rubber rod end:
    [​IMG]

    Solid rod end:
    [​IMG]

    Link:
    http://www.rustysoffroad.com/builder-parts/threaded-forged-ends-inserts


    I just need to either find someone to weld the ends on the tube or finally pony up and buy a welder.

    Sadly, I never took any pictures after I cut the coil. The girlfriend was complaining about me being busy so I finished it as quick as I could and forgot to document it. Whoops lol.

    I'll have to pull the coil off to shim it anyways, so I'll get pics then.
     
    Last edited: Dec 20, 2016
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  2. scotts2012ram

    scotts2012ram Member

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    I wish I could find someone around here that could aline my truck right without wanting 2 to 300. It's only leveled in the rear with 22s if I'm going to pay that much I'll wait and drop it all the way down where I want it then pay that's stupid.
     
  3. razor1

    razor1 Senior Member

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    only thing in the rear to align is the pinion angle and thrust angle to make sure everything is centered. Do you have any vibrations at all?
     
  4. Dubstep Shep

    Dubstep Shep Senior Member

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    Honestly, I just do mine visually. I have a pretty good eye and I'm OCD as hell, so it comes out pretty damn close. Certainly close enough to drive around on for awhile while I mess with things.

    Camber is pretty easy to get right. Toe is the most difficult one. Easiest thing to do is get a 2x4 that's long enough to set against the front and back of the front and rear tires. Basically there should be four points of contact, one on the front and rear of the front and rear tires. If the toe is off, then there will only be two or three points where it contancts.

    There's also the axle position front to rear and left to right.
     
  5. Dubstep Shep

    Dubstep Shep Senior Member

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    Pulled my spohn arms apart and cleaned them up, so I'll probably do a write up and add that in sometime this week.
     
  6. PassivAggressor

    PassivAggressor Senior Member

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    Damn. Nice thread. This is interesting as hell.
     
  7. Dubstep Shep

    Dubstep Shep Senior Member

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    Sheeeeeet, I haven't even delved into the math yet. :roflsquared:

    Still working on the Excel sheet for all that. :naughty:
     
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  8. PassivAggressor

    PassivAggressor Senior Member

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    Could you go into detail of the ride quality between the springs?
     
  9. Dubstep Shep

    Dubstep Shep Senior Member

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    It's tough to say exactly because I'm running such a bastardized system right now that it isn't really a fair comparison. It's close to a 2/4 drop but I still have stock shocks and I can't get the camber out of the front all the way.

    Taking all that into account, it rides really, really well. The front springs are a lot stiffer and I've been pleasantly surprised that the stock shocks have held up so well.
     
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  10. PassivAggressor

    PassivAggressor Senior Member

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    Awesome. I had cut a coil off of the stock springs you sent me and a few coils off the rear. It was strange. It rode decently but definitely was stiff. It certainly did not have that bouncy feeling at all.

    Sent from my VS990 using Tapatalk
     
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