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Rockwell wrap bar thoughts ??



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Old 04-10-2012, 11:09 AM   #1
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Rockwell wrap bar thoughts ??

Hello All,

I am super close to finishing up my rig to where I can drive it and have a little fun. I want to know as far as a wrap bar or traction bar goes is there more than one way to do the design of the bar? I know the tried and true way of double hymns joints to a builder bushing like a ladder bar; I have one going on the rear. But on these leaf springs, can I use the"slapper bar design" Run"insert metal description here"from the U bolt plate on top of the axle to the front spring shackle on the rear spring and from the same place on the front axle to the rear shackle of the front spring? Is this a very effective way of stopping axle wrap? Just wanted to see what others thought. Thanks!!
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Old 04-10-2012, 12:25 PM   #2
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Most any traction bar will limit axle wrap and be fine for the street, racing, mudding, pulling or anywhere suspension flex is not a priority. But, due to the flexy suspensions in rock crawling, IMO it's best to stick with a shackle type traction bar that can cycle with the suspension. A lot of people use a slide bar instead of shackle as well. The other types usually hinder flex and cause binding.



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Old 04-10-2012, 12:27 PM   #3
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Originally Posted by 90'K5 View Post
Most any traction bar will limit axle wrap and be fine for the street, racing, mudding, pulling or anywhere suspension flex is not a priority. But, due to the flexy suspensions in rock crawling, IMO it's best to stick with a shackle type traction bar that can cycle with the suspension. A lot of people use a slide bar instead of shackle as well. The other types usually hinder flex and cause binding.



Thank you Sir, can I ask what you mean by "slide bar" ?
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Old 04-10-2012, 12:34 PM   #4
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Instead of a shackle to flex with the suspension, it has a bar that slides in and out of the main bar.






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Old 04-10-2012, 12:48 PM   #5
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That's the kind I used on both of my rigs. Linked now though.
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Old 04-10-2012, 01:08 PM   #6
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That's the kind I used on both of my rigs. Linked now though.
How well did that work for you Bill ?

That is the same idea as the square tube drive shafts. Thats a cool way of doing that !! Thanks
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Old 04-10-2012, 02:26 PM   #7
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Both of mine worked great. Like I said I linked the rear of my fj but the ftoy still sports the slip and twist. I was worried about it limiting travel but it didn't. I had it mounted as close to the pumpkin as I could.
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Old 04-10-2012, 04:00 PM   #8
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I had a slide bar & bent that to crap. We're doing an anti-wrap bar with a shackle & bushings and a heim joint where the bar attaches to the shackle. Gonna make it pure beef so that doesn't happen again.
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Old 04-11-2012, 06:29 AM   #9
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I had a slide bar & bent that to crap. We're doing an anti-wrap bar with a shackle & bushings and a heim joint where the bar attaches to the shackle. Gonna make it pure beef so that doesn't happen again.
WOW, OK well I guess I'll make mine either shackle or major beef for the slide bar ??
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Old 04-11-2012, 07:26 AM   #10
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Major Beef
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Old 04-12-2012, 08:56 AM   #11
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OK, so I found this link. I know it's on a heep, but the same rules apply for any leaf sprung rig !

http://www.jeepaholics.com/tech/bambar/

I think this is a awesome idea for a non limiting anti wrap bar. Let me know your thoughts ! I think this would work great on the top plate of a rockwell !

I also included a link to the bushings he is refering to in the article here.

http://www.paeco.com/Delrin%20Bushings.htm
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File Type: jpeg t_DCP_0920.jpeg (25.1 KB, 36 views)
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Old 04-12-2012, 09:04 AM   #12
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I don't see any reason it would not work..you may want to look at adding a center section limiting strap though, seems it would invert the shackle if you caught traction at full axle droop.

Also, it seems the shackle angle shown in the above pics would cause the body to rise on acceleration.






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Old 04-12-2012, 09:04 AM   #13
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Originally Posted by crewcab88 View Post
How well did that work for you Bill ?

That is the same idea as the square tube drive shafts. Thats a cool way of doing that !! Thanks
I copied Harley's and it works great! I would use a really heavy outer tube. That's my only recommendation. Cheap and easy. How I like it.
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Old 04-12-2012, 09:16 AM   #14
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I copied Harley's and it works great! I would use a really heavy outer tube. That's my only recommendation. Cheap and easy. How I like it.
. .

I see. I was thinking either way going square tube.

Also, it seems the shackle angle shown in the above pics would cause the body to rise on acceleration.

I see, but I think that's what the piviot point on top that the shackle is bolted too does. It allows the axle to rotate up a little and the body to remain some what level ?
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Old 04-12-2012, 09:21 AM   #15
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Originally Posted by crewcab88 View Post
. .

I see. I was thinking either way going square tube.
Do Square on bottom and find a round tube for the inside or it won't twist.
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Old 04-12-2012, 09:28 AM   #16
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Do Square on bottom and find a round tube for the inside or it won't twist.
GOOD POINT !! LOL Thanks !
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Old 04-12-2012, 09:38 AM   #17
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I see, but I think that's what the piviot point on top that the shackle is bolted too does. It allows the axle to rotate up a little and the body to remain some what level ?

Notice the shackle angle of the drawing you just posted, it is ~90* compared to the body and axle. In the Jeep pics from a few posts ago the shackle angles away from the axle towards the body. Seems like it would push the body away from the axle - like too much antisquat.




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Old 04-12-2012, 12:13 PM   #18
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Seems over thought like the rack and pinion steering idea ...that's just me.
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Old 04-12-2012, 01:13 PM   #19
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Seems over thought like the rack and pinion steering idea ...that's just me.

. .

I was wondering when you would offer your wisdom !
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Old 04-12-2012, 02:19 PM   #20
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. .

I was wondering when you would offer your wisdom !
I wouldn't open that jar for you...it'd go in one ear & out the other. Just providing some common sense input .
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Old 04-12-2012, 02:37 PM   #21
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I wouldn't open that jar for you...it'd go in one ear & out the other. Just providing some common sense input .


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Old 04-12-2012, 03:41 PM   #22
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I like what they did at the axle end but I was always told to make it as long as possible. Was told no shorter than the front spring mount for the rear springs. I always went a few inches more and never had issues.
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