+ Reply to Thread
Page 1 of 3 1 2 3 LastLast
Results 1 to 25 of 60

Thread: Tin Can 4.0

  1. #1



    Senior Member

    Status
    Offline
    Join Date
    Feb 2008
    Location
    Corrales, New Mexico
    Posts
    17,966

    Default Tin Can 4.0

    My rear down bars ar too far away from my shock supprt bar and I can't cut them out and weld new bars to the main hoop, to close to the roof.

    I'm thinking about adding a X brace to the main hoop, I have a couple choices...I like the one where it would all be under a tonneau cover, if it would work.
    Keep in mind, the new bars will not be in the same plane as the existing bars...so it's more than an x brace, it's actuall another set of down bars, but these would be welded to the shock support cross bar, not the frame.

    What say you...? One or Two?
    Attached Images Attached Images
    11.27 @ 118.23
    2017 NM Mopar Challenge Series Champion

  2. #2
    Sick 660r's Avatar
    gen III traitor

    Status
    Offline
    Join Date
    Jan 2008
    Location
    Maryland
    Posts
    5,445

    Default

    One. It will transfer more load to the main hoop.


    Quote Originally Posted by BluRT00 View Post
    Part your red sport out and buy a gen 2. Problem solved.

  3. #3




    slammedR/T's Avatar
    "Bleach Master"

    Status
    Offline
    Join Date
    Jan 2008
    Location
    Jacksonville, FL.
    Posts
    3,910

    Default

    One, two would cause an issue in a crash in my opinion.
    This signature has been deleted thanks to photobucket!

  4. #4
    Sick 660r's Avatar
    gen III traitor

    Status
    Offline
    Join Date
    Jan 2008
    Location
    Maryland
    Posts
    5,445

    Default

    Quote Originally Posted by slammedR/T View Post
    One, two would cause an issue in a crash in my opinion.
    Most likely buckle the rear down bars. If the x brace was in the same plane thenit wouldn't make such a difference.


    Quote Originally Posted by BluRT00 View Post
    Part your red sport out and buy a gen 2. Problem solved.

  5. #5



    Senior Member

    Status
    Offline
    Join Date
    Feb 2008
    Location
    Corrales, New Mexico
    Posts
    17,966

    Default

    Good info...Thanks.
    11.27 @ 118.23
    2017 NM Mopar Challenge Series Champion

  6. #6



    Senior Member

    Status
    Offline
    Join Date
    Feb 2008
    Location
    Corrales, New Mexico
    Posts
    17,966

    Default

    What if I left the cross bar out of #2?
    11.27 @ 118.23
    2017 NM Mopar Challenge Series Champion

  7. #7
    Sick 660r's Avatar
    gen III traitor

    Status
    Offline
    Join Date
    Jan 2008
    Location
    Maryland
    Posts
    5,445

    Default

    Wouldn't matter. That bar doesn't do much imo.


    Quote Originally Posted by BluRT00 View Post
    Part your red sport out and buy a gen 2. Problem solved.

  8. #8



    Senior Member

    Status
    Offline
    Join Date
    Feb 2008
    Location
    Corrales, New Mexico
    Posts
    17,966

    Default

    Yeah looking at, waste of time and DOM tubing.
    11.27 @ 118.23
    2017 NM Mopar Challenge Series Champion

  9. #9




    slammedR/T's Avatar
    "Bleach Master"

    Status
    Offline
    Join Date
    Jan 2008
    Location
    Jacksonville, FL.
    Posts
    3,910

    Default

    Quote Originally Posted by Sick 660r View Post
    Most likely buckle the rear down bars. If the x brace was in the same plane thenit wouldn't make such a difference.
    That what I was thinking since he is running from the down bars, past the point where the down bars tie into the frame and down to the rear shock attach point would cause issues with the x bars being half way in the down bars.
    This signature has been deleted thanks to photobucket!

  10. #10



    Senior Member

    Status
    Offline
    Join Date
    Feb 2008
    Location
    Corrales, New Mexico
    Posts
    17,966

    Default

    Yeah....If I do add an x brace, I'll keep it line with the down bars, the shock bar is just bolted in... I'll get that welded up too. But it's a weak point, my down bars are 8" in front of the shock bar.
    11.27 @ 118.23
    2017 NM Mopar Challenge Series Champion

  11. #11
    Sick 660r's Avatar
    gen III traitor

    Status
    Offline
    Join Date
    Jan 2008
    Location
    Maryland
    Posts
    5,445

    Default

    The bars are two force members (tension/compression) right now so they will only fail due to buckling. Adding the x brace will introduce a bending moment making them much more likely to fail. You could counter the x brace by adding more bars down to the frame between the hoop and the rear down bars but that ms just more complicated. The x brace needs to be as close to the hoop as possible unless it's in the the same plane.


    Quote Originally Posted by BluRT00 View Post
    Part your red sport out and buy a gen 2. Problem solved.

  12. #12
    Sick 660r's Avatar
    gen III traitor

    Status
    Offline
    Join Date
    Jan 2008
    Location
    Maryland
    Posts
    5,445

    Default

    You could add a small section from the shocks to the rear bars and counter them. I'm taking about maybe a foot up the current down bars and no x brace.


    Quote Originally Posted by BluRT00 View Post
    Part your red sport out and buy a gen 2. Problem solved.

  13. #13



    Senior Member

    Status
    Offline
    Join Date
    Feb 2008
    Location
    Corrales, New Mexico
    Posts
    17,966

    Default

    Here's what I have....
    Attached Images Attached Images
    11.27 @ 118.23
    2017 NM Mopar Challenge Series Champion

  14. #14



    Senior Member

    Status
    Offline
    Join Date
    Feb 2008
    Location
    Corrales, New Mexico
    Posts
    17,966

    Default

    Quote Originally Posted by Sick 660r View Post
    You could add a small section from the shocks to the rear bars and counter them. I'm taking about maybe a foot up the current down bars and no x brace.
    Attached Images Attached Images
    11.27 @ 118.23
    2017 NM Mopar Challenge Series Champion

  15. #15
    Sick 660r's Avatar
    gen III traitor

    Status
    Offline
    Join Date
    Jan 2008
    Location
    Maryland
    Posts
    5,445

    Default

    Quote Originally Posted by Adobedude View Post
    Send the bars from the shocks straight to the current down bars(somewhat of an angle outward). Add another bar going forward and down to the frame and make sure it intersects the point where the bars for the shocks meet the current down bars.

    That was explained terribly. It would add support to the shocks with the least amount of DOM. I like the x brace better tho.


    Quote Originally Posted by BluRT00 View Post
    Part your red sport out and buy a gen 2. Problem solved.

  16. #16



    Senior Member

    Status
    Offline
    Join Date
    Feb 2008
    Location
    Corrales, New Mexico
    Posts
    17,966

    Default

    It makes sense, it's just that the frame is so friggen weak
    11.27 @ 118.23
    2017 NM Mopar Challenge Series Champion

  17. #17
    Sick 660r's Avatar
    gen III traitor

    Status
    Offline
    Join Date
    Jan 2008
    Location
    Maryland
    Posts
    5,445

    Default

    And the fact that your shock crossmember is bolted in...


    Quote Originally Posted by BluRT00 View Post
    Part your red sport out and buy a gen 2. Problem solved.

  18. #18



    Senior Member

    Status
    Offline
    Join Date
    Feb 2008
    Location
    Corrales, New Mexico
    Posts
    17,966

    Default

    Quote Originally Posted by Sick 660r View Post
    And the fact that your shock crossmember is bolted in...
    That's getting welded...But the way it's bolted the frame is the weak part, welding wouldn't help that, hence trying to tie the shock bar to the cage.
    11.27 @ 118.23
    2017 NM Mopar Challenge Series Champion

  19. #19
    blackknight's Avatar
    Senior Member

    Status
    Offline
    Join Date
    Mar 2009
    Location
    wapato, wa
    Posts
    6,913

    Default

    Dave, would boxing in that section of the frame and welding the shock mount inside of it strengthen that section from flexing and shuttering on a hard launch ?

  20. #20



    Senior Member

    Status
    Offline
    Join Date
    Feb 2008
    Location
    Corrales, New Mexico
    Posts
    17,966

    Default

    Quote Originally Posted by blackknight View Post
    Dave, would boxing in that section of the frame and welding the shock mount inside of it strengthen that section from flexing and shuttering on a hard launch ?
    I suppose it would help, it's sorta boxed that's why I ran the bars where did...Then I moved shocks a rear later. But we are to weld up what boxing is there, it's spot welded now..
    11.27 @ 118.23
    2017 NM Mopar Challenge Series Champion

  21. #21

    Default

    This is how I did mine. Shock bar is welded in, front x bars tie into driveshaft carrier bearing crossbar where it meets the frame rail. Rear of shock bar is tied into fuel cell bracing at 4 points.




  22. #22



    Senior Member

    Status
    Offline
    Join Date
    Feb 2008
    Location
    Corrales, New Mexico
    Posts
    17,966

    Default

    Quote Originally Posted by TurboJoe62 View Post
    This is how I did mine. Shock bar is welded in, front x bars tie into driveshaft carrier bearing crossbar where it meets the frame rail. Rear of shock bar is tied into fuel cell bracing at 4 points.

    I'm going to get a new shock bar fabbed by a local chassis guy that I can have welded in like yours, and I like the way you braced it up. Thanks for the pic. Add that to a couple downbars with an x brace...Done.
    Last edited by Adobedude; 02-15-2017 at 02:22 PM.
    11.27 @ 118.23
    2017 NM Mopar Challenge Series Champion

  23. #23

    Kingst3r's Avatar
    ---Under Construction---

    Status
    Offline
    Join Date
    Dec 2009
    Location
    New Jersey
    Posts
    3,745

    Default

    Quote Originally Posted by Sick 660r View Post
    The bars are two force members (tension/compression) right now so they will only fail due to buckling. Adding the x brace will introduce a bending moment making them much more likely to fail. You could counter the x brace by adding more bars down to the frame between the hoop and the rear down bars but that ms just more complicated. The x brace needs to be as close to the hoop as possible unless it's in the the same plane.
    Joe, are you saying just adding the x brace between the rear bars will make it weaker?

    My R/T build (rebuild) thread

    http://www.dakota-durango.com/forum/...d.php?t=133167
    Quote Originally Posted by 70Cuda383 View Post
    It's an emissions thing. someone, somewhere said that the millions of gallons of gas that evaporate to the atmosphere every year was killing tree frogs on some south african isalnd or some shit, those endangered tree frogs can suck my left nut.

  24. #24
    Sick 660r's Avatar
    gen III traitor

    Status
    Offline
    Join Date
    Jan 2008
    Location
    Maryland
    Posts
    5,445

    Default

    Quote Originally Posted by Kingst3r View Post
    Joe, are you saying just adding the x brace between the rear bars will make it weaker?
    No. Not if the x brace is entirely within the current rear down bars (same plane). Transferring shock loads to the center of the rear down bars will make them weaker.


    Quote Originally Posted by BluRT00 View Post
    Part your red sport out and buy a gen 2. Problem solved.

  25. #25



    Senior Member

    Status
    Offline
    Join Date
    Feb 2008
    Location
    Corrales, New Mexico
    Posts
    17,966

    Default

    So here's the shock bar waiting to be welded into place....
    Much better than bolted in.
    Attached Images Attached Images
    11.27 @ 118.23
    2017 NM Mopar Challenge Series Champion

+ Reply to Thread
Page 1 of 3 1 2 3 LastLast

Posting Permissions

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
  •