Leaf spring set up questions

Discussion in 'Suspension, Steering, Brake & Wheel Topics' started by J. Chris Davis, Oct 31, 2013.

  1. J. Chris Davis

    J. Chris Davis Veteran Member

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    I posted this in my build thread, but though I should post it in the proper section as well.

    So, I have been all over the forums and reading on leaf springs and rear suspension set ups. I'm hoping someone can answer my questions on this. I have Hotchkis front springs. I would like to use Del-alum shackles and Caltrac traction bars which use the aluminum bushing in the front eye. My question is should I get Hotchkis leaf springs partly becuase I have the Hotckis front springs or should I go with the Global West leaf springs. I've read that the G.W. are a more modern spring design. I also read with aluminum front eye bushings it would cause an overstear issue with keeping the rear sway bar. So should I remove the rear sway bar when I do this? Mainly trying to figure out what spring to get and whether or not to keep the rear sway bar. Any information would be greatly appreciated. This is a street car that is not daily driven. I would just like it to sit a little lower which either of those springs will do and have good handling.
     
  2. 79T/Aman

    79T/Aman Veteran Member NastyZ28 Sponsor NastyZ28 Sponsor Lifetime Gold Member

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    the over steer issue will be caused by the solid front eye bushing, the Caltracs will make this worse especially if you are trying to make the car handle on the street.
    Caltracs are good if you build a drag car.
    What is the more "modern " design of the GW leafs?
    For example our leaf springs are built like the GW's the only thing different is that they do not have a "tight" leaf pack to lessen inter leaf friction and binding.
    Our GT leaf spring will match the Hotchkis fronts but you also could use our Comp rear leafs with the Spherical bearing it works very well in higher powered cars without the need for traction devices and no binding due to the solid front eye bushing and you may use your rear sway bar.

    BTW the reason GW says to not use the rear sway bar with the Del-alum (solid ) front eye bushing is because it causes so much bind and the rear end housing becomes the sway bar....that's a heck of a big bar...lol

    If you are in Dixon Il you may want to take a ride to the shop here :)
     
  3. J. Chris Davis

    J. Chris Davis Veteran Member

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    Thank you for the information. Someone had posted in another thread that the G.W. leafs were a redesign and a more modern leaf. I'd like it to be good if I were to ever take it to the track, but mainly the purpose I was going to get the caltracs for was so I didn't have spring bind and wheel hop. Right now I have lakewood traction bars and I want them gone. Don't like them and have clearance issues with them. I might have to come up some time. Where are you located at?
     
    Last edited: Oct 31, 2013
  4. J. Chris Davis

    J. Chris Davis Veteran Member

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    Question on your GT leafs. Do they come with the solid front bushing and are the shackles poly then? The comps are probably more than I need for this car. The motor has a little more than 400 hp.
     
  5. 79T/Aman

    79T/Aman Veteran Member NastyZ28 Sponsor NastyZ28 Sponsor Lifetime Gold Member

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    well the caltracs will cause bind because as they apply pressure to the top of the leaf spring the leaf springs are forced to move the opposite direction from there natural movement.
    With the stiffer springs you should not need a traction device anyway.
    The GT leafs come with a rubber front eye.
    but the Comps with the spherical bearing would work better at fighting wheel hop because there is no radial deflection of the bushings yet it allows the leaf spring to camber and follow the movement of the rear end housing without binding.
     
  6. Rene Melten

    Rene Melten Veteran Member Lifetime Gold Member

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    Here is a pic of a Global West L-2 spring with an 1 1/4"drop.
    The only unique design about these is the location of the 2'nd spring, look and see how close it is to the front spring eye.
    Haven't seen this on any other spring to date.[​IMG]
     
  7. mid77z28

    mid77z28 Veteran Member

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    I have the global west L3's.They are similar to the L2's with a slightly higher spring rate.Like Rene said,I never seen a leaf configuration like theirs on the market.The ride is a little firm and they don't wheel hop and I tried with 400 hp 350.
     
  8. John Wright

    John Wright Veteran Member Lifetime Gold Member

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    What Rene pointed out on the GW spring is to help control wheel hop(spring wrap). This eliminated the need for the slapper bars.

    Solid bushings in the spring eyes are for going straight...this is counter-intuitive for carving corners, you need for the axle to articulate if it is going to be effective in the curves and over uneven road surfaces. If the axle cannot articulate, it will bind up and there is where your oversteering comes in. The spherical bearing that can be installed in either the front eye or in the rear shackles to help the axle articlate is similar to what the off-road guys call a Johnny Joint.
     
  9. J. Chris Davis

    J. Chris Davis Veteran Member

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    Thanks for the information guys. How would a poly front eye bushing do? Would it be like having the solid one? What about shackles on the G.W. leafs? Would poly or Del-alum be better? Also does anyone know if the G.W. leafs compliment the Hotchkis front springs or does that really even matter? Ultimately I'm looking for something that will corner well and won't wheel hop when getting on it from a dead stop.
     
    Last edited: Nov 1, 2013
  10. 73 L92

    73 L92 Veteran Member

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    I have the Hotchkis 1.5 drop springs. No wheel hop. 420 hp to the rear wheels. One nice thing about the Hotchkis (maybe others too) is that leaf spring "wrap" thingie that keeps the spring leafs squared together is positioned so it misses the tire. Gives you just a little more room slightly more back space.
     

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