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Suicide Front End.. Now I know what they meant

Discussion in 'The Hokey Ass Message Board' started by orphaneddie, Apr 15, 2008.

  1. orphaneddie
    Joined: Jul 1, 2007
    Posts: 120

    orphaneddie
    Member

    Yep, driving to Santa Paula car show a week ago... hit some gnarly train tracks (luckily going 10 mph)... broke my driver side perch. Even at 10 mph that was some scary shit!
    [​IMG]


    [​IMG]
     
  2. Kevin Lee
    Joined: Nov 12, 2001
    Posts: 7,584

    Kevin Lee
    Super Moderator
    Staff Member

    OK - this is something I have been wanting to see evidence of for a long time. Can you please post some CLOSE-UP shots of the failure?

    Were you using Ford perches or did you make your own? T-bucket style with a piece of tubing welded to a bolt? Tubing welded directly to the wishbone?

    Sorry for the rapid-fire questions. But I think this is a perfect opportunity to educate and keep people from making the same mistake.
     
  3. I'll second that, I'd like to see some close ups as well.
    Glad your ok!
     
  4. chaddilac
    Joined: Mar 21, 2006
    Posts: 14,021

    chaddilac
    Member

    Yep, me too. I'd like to know what not to do.
     

  5. DE SOTO
    Joined: Jan 20, 2006
    Posts: 3,857

    DE SOTO
    Member

    I to need to see the Pics...

    I have been saying this spring mounted to the 'Bones is Horseshit for years but only a few agree..

    Eddie, Shoot me yer # in a P/M ... I wanna see this in person.
     
  6. Gregg Pellicer
    Joined: Aug 20, 2004
    Posts: 1,347

    Gregg Pellicer
    Member

    Looking at the picture it look's like the perch tube broke away from the shaft.The whole shackle is still attached to the spring.This might just be a case of bad welding.Give us some close up pic's of the failed part's please
     
  7. Flatman
    Joined: Dec 20, 2005
    Posts: 1,975

    Flatman
    Member

    I'm one of the few. Glad you're okay, man.

    Flatman
     
  8. Bort62
    Joined: Jan 11, 2007
    Posts: 594

    Bort62
    BANNED

    Yikes. Glad you are okay, and yes - we need to see what happened.
     
  9. Kevin Lee
    Joined: Nov 12, 2001
    Posts: 7,584

    Kevin Lee
    Super Moderator
    Staff Member

    It's killing me not being able to see pics.

    I'm no engineer and I don't even want to guess until close-ups are shown... but in that first pic does it not look like the opposite perch is being held on with a really undersized bolt?
     
  10. Zombie Hot Rod
    Joined: Oct 22, 2006
    Posts: 2,452

    Zombie Hot Rod
    Member
    from New York

    Looks like someone used the threaded spring perches in that set up, the kind they make for a "spring behind" on T-Buckets with tube axles.

    When done properly with the proper parts I personally don't see anything wrong with the perches going through the wishbones...
     
  11. Doctor Destructo
    Joined: Feb 10, 2007
    Posts: 418

    Doctor Destructo
    Member

    Just glad you're okay.
     
  12. I'd be willing to bet that the perch was welded with a MIG !
     
  13. scootermcrad
    Joined: Sep 20, 2005
    Posts: 12,382

    scootermcrad
    ALLIANCE MEMBER

    BTTT for pics!!!! How were they mounted to the bones, what welding process, details, details, details, details!!!!!!!! This is very important to everyone who is building this type of front suspension. All pride needs to be put aside at this point and details should be posted...

    Looks bad, glad nobody was hurt.
     
  14. Kevin Lee
    Joined: Nov 12, 2001
    Posts: 7,584

    Kevin Lee
    Super Moderator
    Staff Member

    The only thing I would be willing to bet is that it was designed or welded incorrectly. Anything else would be pure speculation at this point.
     
  15. DrJ
    Joined: Mar 3, 2001
    Posts: 9,419

    DrJ
    Member

    Glad you're OK.
    I'd be dead because I usually nail it going over tracks just for the thrill of "getting air"!:eek:

    The problem with this overworked phrase is it's a bitch finding out the hard way that something wasn't proper, and other than overbuilding, isn't that the only way to know?

    I look at these suicide setups that are hanging hundreds of pounds of engine and a couple of lives by four shackle bolts that are smaller than the one's holding the headlights on and cringe.

    Enough of the bitch, here's a possible solution, other than keeping the axle under the frame where it safely belongs...
    How about an "L" shaped plate welded to that rod that the "L" crosses over far enough under the shackle so if there's a fastener failure the "L" catches the end of the spring like the axle will in a spring over axle setup?
     
  16. onedge
    Joined: May 25, 2006
    Posts: 999

    onedge
    Member

    when you post the specific photos, this will get ALL excited then...glad your OK.
    maybe some of these fellas will take the time to inspect what they are driving as hotrods around here. wont do any good though if they dont know what to look for! more pictures!
     
  17. Bruce Lancaster
    Joined: Oct 9, 2001
    Posts: 21,681

    Bruce Lancaster
    Member Emeritus

    I think you can see the surviving perch bolt under the R headlight in the picture...looks like a threaded installation sticking out, not tightened down against anything, so bolt is allowed to flex. I would guess also aftermarket part with cut thread there... but thats speculation. The world needs closeups and origin of the part for some analysis.
    I don't think this geometry is necessarily unsafe...part material and workmanship, design, installation are the killers.
     
  18. ZomBrian
    Joined: Jan 24, 2008
    Posts: 1,143

    ZomBrian
    Member
    from in IN

    I'd love to see more pics of the car before tragedy struck. Loooks like it had a killer stance! Anybody have any?


    Brian
     
  19. Crankhole
    Joined: Apr 7, 2005
    Posts: 2,634

    Crankhole
    Member

  20. Zombie Hot Rod
    Joined: Oct 22, 2006
    Posts: 2,452

    Zombie Hot Rod
    Member
    from New York

    Personally I don't like to argue over the interent... But this set up has been done enough times by other people tthat even a first time builder with a little bit of research would know which way works best. To be honest, it's probably on this board about a half a dozen times already.

    But still, at this point we don't know how this front end is set up. People say it's dangerous, all I said is that when it's done properly I don't see it being dangerous.
     
  21. Aman
    Joined: Dec 28, 2005
    Posts: 2,522

    Aman
    Member
    from Texas

    Yep, that's why they're called suicide front ends. I would never ride in a car with that set up and I don't care how it was welded or who built it. The axle belongs under the car not out in front. You can see what the result is right here. I would like to see more pics too so we can pin point the failure. Sorry to hear about this, that's a nice car.
     
  22. DrJ
    Joined: Mar 3, 2001
    Posts: 9,419

    DrJ
    Member

    Them Dodges are purty bodies...
    It looks good because the body isn't sucking asphalt standing still.
    Notice on the flatbed the shackle isn't actually on the deck.
    I think the only thing keeping it up is the split bones in the rear using the rear end as an anti-sway bar.
    Guess the rear bars haven't been too stressed and aren't cracked, yet.
    Would have been more damage if it was one of them 1" off the ground cars.:eek:
     
  23. chaddilac
    Joined: Mar 21, 2006
    Posts: 14,021

    chaddilac
    Member

    "Hecho in china" parts probably.
     
  24. SanDiegoJoe
    Joined: Apr 18, 2004
    Posts: 3,519

    SanDiegoJoe
    Member

    wow.. good thing it was only 10mph. I can't imagine a failure at higher speeds.

    - Joe
     
  25. Von Rigg Fink
    Joined: Jun 11, 2007
    Posts: 13,418

    Von Rigg Fink
    Member
    from Garage

    Owch..that sucks. glad you were going slow. good thing your ok. time to figure it out and fix it so you dont have that happen again!
     
  26. munster
    Joined: Apr 4, 2005
    Posts: 235

    munster
    Member
    from burbank

    glad your ok man!!
     
  27. yeah glad your aight
     
  28. Kramer
    Joined: Mar 19, 2007
    Posts: 911

    Kramer
    Member

    On blowing up the picture you can see the shackle on the right under the car. Does not appear to have anything attached to the non spring side, like the attaching bolt broke off? Looks like it was attached to the bones. Don't be shy, lets see some pictures of the failed part.
     
  29. Django
    Joined: Nov 15, 2002
    Posts: 10,198

    Django
    Member
    from Chicago

  30. Even the "best" design will not live
    if all the components are not sized correctly.

    How many miles on this before it fell apart ?
     

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