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Goodbye Axle Wrap Mod

Discussion in '1st Gen. Tacomas' started by iDigTulsa, Aug 14, 2010.

  1. Feb 18, 2013 at 3:28 PM
    #201
    StAndrew

    StAndrew Wait for it...

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    Wouldnt this limit down travel?
     
  2. Feb 18, 2013 at 3:47 PM
    #202
    jandrews

    jandrews Carolina Alliance Southwest Region Ambassador

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    Mine won't. I can't see the shackle setup on Dell's example to give it a yes or no. There needs to be a heim, creeper, uniball, or some kind of spherical bearing in there to allow the axle to articulate without binding.

    Here's the attachment:

    [​IMG]
     
  3. Feb 18, 2013 at 4:15 PM
    #203
    wolfgang123

    wolfgang123 Well-Known Member

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    you need to re-enforce that cross member, OEM is not built to handle that much force
     
  4. Feb 18, 2013 at 4:51 PM
    #204
    jandrews

    jandrews Carolina Alliance Southwest Region Ambassador

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    No you don't. It's not that much force.
     
  5. Feb 18, 2013 at 7:13 PM
    #205
    TacoDell

    TacoDell Truck ~n~ Tow

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    yeah the picture I posted is an inferior example.
    that forward shackle/bushing thang looks no bueno.

    yours is superior in design and a much better example :thumbsup:
     
  6. Feb 18, 2013 at 9:28 PM
    #206
    SpeedoJosh

    SpeedoJosh Well-Known Member

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    Bet those don't cost only $15 though :stirthepot:
     
  7. Feb 19, 2013 at 4:42 AM
    #207
    jandrews

    jandrews Carolina Alliance Southwest Region Ambassador

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    I used spring clips a bit before I got the bar. They help...for a bit. They wear your leafs out quicker (due to creating a cyclic flexion point in the leafs) and eventually the floppy point just moves to where the clamp is, and the problem re-emerges.

    Over the life of the truck, I'll bet the traction bar costs less, because I'm sure it'll save me at least one leaf spring replacement. And they (traction bars) aren't as expensive as you might think.
     
  8. Feb 19, 2013 at 12:49 PM
    #208
    StAndrew

    StAndrew Wait for it...

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    I got that, but what about the length diff as the axel articluates. The drive shaft has a slip joint to accomodate, does the traction bar?

    Edit, Nvmd, I see it.
     
  9. Feb 20, 2013 at 9:00 AM
    #209
    wolfgang123

    wolfgang123 Well-Known Member

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    maybe on your 09 that cross member is stronger...on my 97 that cross member looks WAY to thin and has way too many holes in it for me to trust it.
     
  10. Feb 20, 2013 at 9:24 AM
    #210
    jandrews

    jandrews Carolina Alliance Southwest Region Ambassador

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    All its resisting is whatever amount of tractive force allows the truck to move. In neutral, an able human being can push one of these trucks by hand. Unless you can bend the crossmember by hand, you really don't have to worry about it. Traction bars don't typically resist great forces, its just in stock form, there's nothing there to resist that force at all. Axle wrap wouldnt be a problem but for the possibility of binding u joints, ring and pinion deflection, and wheel hop. Wheel hop especially can be very damaging to driveline components...its basically like hitting the rear axle with a giant impact hammer. With a traction bar, the wheels either break loose and spin on the ground or the vehicle moves. There's no hop to wreck your gears .

    That crossmember is made of thin steel, but its c channel with rolled lips. You might be surprised how much strength that adds.
     
  11. Feb 20, 2013 at 5:15 PM
    #211
    pickuptruckguy

    pickuptruckguy Well-Known Member

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    ...Back to the axle rap U bolt mod, what would the advantages and disadvantages be of installing the U bolt around the 2 leafs and the overload leaf instead of just around the 2 leafs?
     
  12. Feb 20, 2013 at 5:29 PM
    #212
    wolfgang123

    wolfgang123 Well-Known Member

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    Im not talking about under normal driving conditions, im talking about on the trail flex, when the trac bars heim joints max out and your suspension still has room for more flex all of that force is being transferred and held in that traction bar, which is now in a sense holding "up" the weight of your rear axle or the force of the leaf springs and gravity attempting to flex the axle (really bad description but the best one i can think of at the moment) this flex i am worried will tweak and twist your cross member.

    My cross member does not have rolled lips but straight up holes like you'd make with a hole saw. So +1 to you :cool:


    if you clamped the overload to the rest of the springs i imagine it would stiffin the hell out of your ride considering the overload bar is so thick and is only there to support the leaf springs when LARGE amounts of weight are in the bed/being towed
     
  13. Feb 20, 2013 at 6:11 PM
    #213
    SpeedoJosh

    SpeedoJosh Well-Known Member

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    Ok, so picked up the u-bolt pack yesterday.

    [​IMG]

    So I installed them about a fist length from the axle mount on each side. Tightened them down a pretty decent amount

    Passenger side
    [​IMG]

    Driver side
    [​IMG]

    Problem is, it feels like my truck is more stiff/bouncy on bumps. Did I put them in the right place, or maybe tighten them too much?
    I didn't have any problems when stopping like most complain of, but it did feel like when I would go over bumps, usually in the lower speed acceleration, my rear end would bounce around, almost like it was skipping. Which is the reason I installed these.
    Haven't hit many big bumps to see if that bump is still there.
     
  14. Feb 20, 2013 at 6:49 PM
    #214
    jandrews

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    Stiffer ride, more resistance to wrap.

    If the trac bar is designed properly, that should never happen. Mine doesn't bind at all at full suspension travel. The misalignment spacers on the heim joint allow for 34 degrees of articulation. That's...a lot. With my shackle flip and relocation shock mounts plus 15in travel shocks, my rear axle flexes a little over 20 degrees. To get over 30 on these trucks you're going to have to seriously re-engineer the rear end, probably with a coil-link suspension, and remove the bed.

    [​IMG]

    You can see here the delta between frame and axle is nowhere close to 30 degrees...I'm not at full flex in this picture (close, but not quite) so this is probably somewhere in the high teens in terms of angle...

    [​IMG]

    If a trac bar binds at full flex, it was mocked or installed wrong, or both. It should never carry the weight of the vehicle, just locate the axle within the rotational plane of the wheels.



    Clamping the springs effectively combines all the leafs into one in the area behind the clamp. This effectively stiffens spring rate in that area. That's why it decreases axle wrap, but yes, it will also result in a rougher ride.

    Including the overload leaf will also worsen this issue. It's made for extremely heavy loads and has an extremely stiff rate.
     
  15. Mar 23, 2013 at 5:49 PM
    #215
    03taco88

    03taco88 Well-Known Member

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    Stock for now Mods to come 6" w/35's HID's 5% tint
    Would an AAL fix the springs back to have an arch and solve axle wrap?
     
  16. Mar 27, 2013 at 9:15 PM
    #216
    payrow

    payrow Well-Known Member

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    Subbed.
     
  17. Mar 27, 2013 at 10:44 PM
    #217
    Geosh

    Geosh Why yes, I AM a rocket scientist.

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    So looking at my rear leafs today, they are pretty flat across. Should they have a bit of upward bow (U shape) without any additional load? Wondering if my leafs are worn out and I should just replace them before trying any clamp fixes. Also, what springs should I replace them with if need be? It is a 03 TRD DC Prerunner.
     
  18. Mar 28, 2013 at 10:23 AM
    #218
    wolfgang123

    wolfgang123 Well-Known Member

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    Depends on how flat they are now and what kind of AAL you buy. But any AAL will help relieve some weight from the spring pack and return the arch probably not as good as new but it helps.

    Solve...no
    Help a little?...Maybe
     
  19. Mar 28, 2013 at 10:32 AM
    #219
    03taco88

    03taco88 Well-Known Member

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    Stock for now Mods to come 6" w/35's HID's 5% tint
    Good deal might do the 3pack leaf spring before I save up for Dakar's
     
  20. Mar 28, 2013 at 10:46 AM
    #220
    wolfgang123

    wolfgang123 Well-Known Member

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    A progress AAL like that would be perfect if you spring for the extra $
     
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