Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

check out the detail on this one

Discussion in 'The Garage' started by bajaviking, Sep 4, 2006.

  1. bajaviking

    bajaviking 1/2 ton status

    Joined:
    Apr 10, 2002
    Posts:
    752
    Likes Received:
    2
    Location:
    Baja
  2. surpip

    surpip 1 ton status

    Joined:
    Apr 7, 2004
    Posts:
    10,877
    Likes Received:
    0
    Location:
    sacramento ca
    holy crap, i wonder how many hundreds of feet of filler rod they used to build that chassis
     
  3. ntsqd

    ntsqd 1/2 ton status

    Joined:
    Nov 28, 2002
    Posts:
    3,381
    Likes Received:
    0
    Location:
    So. CA
    With all of those wash welds I'd guess there's 75+ lbs of filler in that chassis.
     
  4. bajaviking

    bajaviking 1/2 ton status

    Joined:
    Apr 10, 2002
    Posts:
    752
    Likes Received:
    2
    Location:
    Baja
    When I see pictures like this I begin to understand why these trucks are so expensive to build and I also begin to get a stiffy:D
     
  5. 1BadK-30

    1BadK-30 1/2 ton status

    Joined:
    Feb 6, 2005
    Posts:
    817
    Likes Received:
    0
    Location:
    Phoenix, Arizona
    ok noob question here, what is filler rod and why is it used?
     
  6. FOR MUD

    FOR MUD 1/2 ton status Premium Member GMOTM Winner

    Joined:
    Apr 6, 2006
    Posts:
    2,812
    Likes Received:
    396
    Location:
    Clayton Del
    I wonder how long that took to make? It would take me two to three life times to do!!!!
     
  7. bajaviking

    bajaviking 1/2 ton status

    Joined:
    Apr 10, 2002
    Posts:
    752
    Likes Received:
    2
    Location:
    Baja
    Filler rod is a thin steel rod used when Tig welding to add material to the weld.
     
  8. 1BadK-30

    1BadK-30 1/2 ton status

    Joined:
    Feb 6, 2005
    Posts:
    817
    Likes Received:
    0
    Location:
    Phoenix, Arizona
    I see, thank you very much. :waytogo:
     
  9. skidpan

    skidpan 1/2 ton status

    Joined:
    Sep 21, 2005
    Posts:
    226
    Likes Received:
    0
    Location:
    SOCAL
    can any of you explain to me how the drive train is set up on that thing..
    it has a rear engine, but the rear ?swing arm? seems to mount to the chassis in the middle if the engine..
     
  10. y5mgisi

    y5mgisi 1 ton status

    Joined:
    Aug 11, 2002
    Posts:
    17,156
    Likes Received:
    247
    Location:
    Portland Oregon
    i especialy like the front shock upper shock mount.
     
  11. rdn2blazer

    rdn2blazer 1 ton status Premium Member

    Joined:
    Jun 9, 2004
    Posts:
    16,487
    Likes Received:
    1,192
    Location:
    So Cal.
    home fabricators take notes, there is a wealth of education in these pics for sure. granted we rock crawlers wont be doing 140 through the desert but the quality of your rig and you surviveing a serious crash or roll over, posibily miltiple times depends on how well you build it.

    look at the welds, the stacked coin method you here people decribe is actually a weaker weld unless the overlap of the weld pool (each dab of filler rod) overlaps the previous weld pool by atleast 80 to 90 %. I see welds here on ck5 all the time where the weld is only overlaped by as little as 40 to 60% of the previous weld pool. you end up with this wide/narrow effect which is a weaker weld. you see in these pics their welds are consistantly the same width the entire length of the weld.

    even a mig weld should be this consistancy too. guys that mig weld that do this type of method of welding do the same thing, too big of seperation in the weld pause.

    you also see where everywhere there is a bolt the contact point of the bolt head and nut is double walled to eleminate pull through and add rigidity and strength to the structure. all most all the gussets are of tube rather then a plate type gusset on the center of the tube so in a wreck you wont get a narrow gusset actually punching through a tube. a single plate type gusset only contacting one wall of a given piece of tube is weaker then a tube gusset which uses the full width and structure of a tube.

    some joints have the tube with a bend radius in the tube right at the point of contact of the ajoining tube instead of just a straight line into the ajoining tube with the end coped. this gives a bigger surface area of contact and more weld in the weld joint, hence a stronger joint.

    every bolt is in a double sheer situation not single shear, again much stronger.

    Im not saying build your rig like a trophy truck at all Im just saying look at the pics, there is a lot you can learn from them about structural integrity and design for sure. there is a reason why that truck was built like it was. it was not built like that from day one in racing, there built with this extreme type of construction because they evolved over time and FAILURE and probably some or alot of trial and error to become as reliable and indestructable as they can be considering there intended racing environment.
     
    Last edited: Sep 4, 2006
  12. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

    Joined:
    May 19, 2001
    Posts:
    45,031
    Likes Received:
    366
    Location:
    Vancouver, WA, USA
    definitely needs more nodes and triangulation. :grin:

    j
     
  13. PeteH

    PeteH 1/2 ton status

    Joined:
    Mar 26, 2003
    Posts:
    498
    Likes Received:
    0
    Location:
    San Jose
    ssshhhhaaaawingggg
     
  14. ntsqd

    ntsqd 1/2 ton status

    Joined:
    Nov 28, 2002
    Posts:
    3,381
    Likes Received:
    0
    Location:
    So. CA
    RG is a fan of using boat type V-Drive gear boxes. There may now be a purpose built gearbox, but early-on they were all V-Drive boxes. Which is why the diff opening in the housing is so far offset. The V-Drive box lives under the driver's feet (& a little further back if ya kno what I mean :eek1: ).


    A note on those welds; In desert race fab they employ a "wash-weld" technique. What that means is TWO passes. Frequently those passes are two different welders. The high guy on the totem pole does the fitting and the root pass while a low guy does the wash-weld as that takes longer than most fitting & root welding. The root pass is as described above. Then the second pass weaves back and forth over a width of 2X-2.5X the thickness of the base metal. The idea is to widen out the bead & give it a larger radius fillet so that the weld is less of a Stress Riser, and the desert guys think it looks cool.

    I've long speculated that another bonus in using a bent piece of tube for a gusset (like up at the top-outer corner of the windshield) is that the bent is slightly less rigid than a straight piece would be, and that's a good thing. It lets the chassis tweak a little and come back to square rather than forcing permanent deformation. Ideally the chassis would be totally rigid and that wouldn't be needed, but the reality is that if you build in a little flex the chassis will live a lot longer. Bare in mind that these are 4130 structures and unlike a mild steel chassis, those do have a set life span.
     

Share This Page