SLR Steering Angle Kit for E30 + E36 | What do you think?

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  1. SLR Steering Angle Kit for E30 + E36 | What do you think? 
    #1
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    What does everyone think about this kit??

    http://forums.bimmerforums.com/forum....php?t=1727387

    Doesn't look safe to me
     
     

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    yello...
     
     

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    Seems to have some happy customers though
     
     

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    Hi, my name is Sean, I'm the guy who designed and builds the SLR kit.

    Which part of the kit do you find unsafe?

    I think most people worry about the control arm extension pieces, but there really isn't anything to worry about. The extensions are made from 3/4inch (19mm) cold-rolled (essentially forged) 1020 steel and are CNC waterjet cut to match the original control arm and have more than 8inches of deep welded bead attaching them to the original arm (also forged steel). The arms are bevel cut before welding to give a good 'V' for weld build up and strong penetration. The welder used is a 185amp Miller, with ER70 filler.

    I actually hit the back side of a racetrack curb with the car sideways at about 60mph in testing and the arm bent like a normal arm, the welds held up fine. Nearly everything on the car bent or broke EXCEPT our custom parts.

    http://forums.bimmerforums.com/forum....php?t=1728970

    Basically the wheel got trashed, the arm bent, the strut broke, the inner tie-rod bent over 60 degrees, and the subframe smashed in where the arm bent up and hit it.

    I was able to stop the car, and drive back to the pits and dis-assemble everything. Our welded in plate was fine, the uniball joint was fine, the CNC plate only had damage from the strut adjuster nut hitting it, I know it wasn't bent because it slid off the bolts perfectly straight.

    After fixing the strut and installing a new arm, I re-installed all the same hardware and the CNC plate and went drifting again at two events a day later.

    I hope that helps answer your concerns.

    We also build custom E46 arms with spherical bearings pressed in and offer diffrent geometry ackerman plates and bumpsteer kit for all E30-E36-E46 models.

    We are working on having our website up next week.

    Cheers,
    -Sean
    SLR Design
    sdeanl@gmail.com
    +1-561-542-2810
     
     

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    Glad you were ok though
    Ps welcome to the forum
     
     

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    I should hopefully have this kit arriving this week (all being well with customs) so will let everyone know how i get on.

    Seans service has been faultless so far.
     
     

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    dazza316i (17-11-2011)

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    #7
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    Quote Originally Posted by SLR View Post
    Hi, my name is Sean, I'm the guy who designed and builds the SLR kit.

    Which part of the kit do you find unsafe?

    I think most people worry about the control arm extension pieces, but there really isn't anything to worry about. The extensions are made from 3/4inch (19mm) cold-rolled (essentially forged) 1020 steel and are CNC waterjet cut to match the original control arm and have more than 8inches of deep welded bead attaching them to the original arm (also forged steel). The arms are bevel cut before welding to give a good 'V' for weld build up and strong penetration. The welder used is a 185amp Miller, with ER70 filler.

    I actually hit the back side of a racetrack curb with the car sideways at about 60mph in testing and the arm bent like a normal arm, the welds held up fine. Nearly everything on the car bent or broke EXCEPT our custom parts.

    http://forums.bimmerforums.com/forum....php?t=1728970

    Basically the wheel got trashed, the arm bent, the strut broke, the inner tie-rod bent over 60 degrees, and the subframe smashed in where the arm bent up and hit it.

    I was able to stop the car, and drive back to the pits and dis-assemble everything. Our welded in plate was fine, the uniball joint was fine, the CNC plate only had damage from the strut adjuster nut hitting it, I know it wasn't bent because it slid off the bolts perfectly straight.

    After fixing the strut and installing a new arm, I re-installed all the same hardware and the CNC plate and went drifting again at two events a day later.

    I hope that helps answer your concerns.

    We also build custom E46 arms with spherical bearings pressed in and offer diffrent geometry ackerman plates and bumpsteer kit for all E30-E36-E46 models.

    We are working on having our website up next week.

    Cheers,
    -Sean
    SLR Design
    sdeanl@gmail.com
    +1-561-542-2810
    The arms look well made. I was only concerned about bolting on a block of metal underneath the hub with some long bolts. Any good pics of that part from the crash? Would it pass a UK Mot aswell do you know? What material is the block made from? It is a major stress point. How come you didn't go for a welded on piece?
    cheers
     
     

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    Looks safe to me.
    Just looks shit.

    Edit: Reading that today, my reply was perhaps a bit harsh. I still think that it looks a bit 'clunky'; maybe machining a recess the same profile as the portion of the upright you're bolting to will make things fit/look a bit a nicer.
    Last edited by Sphinx; 18-11-2011 at 10:16.
    http://www.bimmerforums.co.uk/forum/image.php?type=sigpic&userid=25535&dateline=129538  0035
     
     

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    #9
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    Hi, I guess I don't have email notifications turned on, I just happened to check back here again tonight.

    The aluminum plate is made from 6061-T6 hardened aircraft aluminum. There is a stainless press-fit insert where the ball joint bolt goes through the plate.

    The tapered bolts used for the balljoint and steering pin are made by the same company that supplies many top race teams here in the US and are designed for the extreme loads from slick tyres (2-3g's on GT cars), on street legal tyres it's tough to even pull 1g.

    The reason we didn't do a weld-on part is after years of building custom spindles I wanted to make something available that was a simple bolt-on. As far as the profile of the geometry plate, doing multiple side profiles in the CNC gets expensive quick and we're trying to keep pricing as affordable as possible.

    The parts that were on the car in the crash are still on it actually.

    After welding the broken strut, rigging a custom tie-rod and swapping the wheel, I actually ran the car at 2 other events that same weekend.

    -Sean
    sdeanl@gmail.com
     
     

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