Traction bar mounting—Do the upper and lower axle mounts need to be inline?

pcorssmit · 03-14-2007, 02:38 PM

Is there any reason that the upper and lower axle mounts for a ladder bar style (ie Sam’s Offroad style) traction bar need to be inline with each other? Specifically having the upper mount further towards the center, and the lower mount more outboard towards the passenger side? (When viewed from the front of the truck, the bar would look like / ) I’m trying to clear my exhaust. I am using bushings at the axle end, and the fixed end of the shackle, with a Johnny Joint at the shackle-end of the bar. I was planning to run the bushings in a horizontal orientation.

Pete

rokcrwlrtj · 03-14-2007, 02:44 PM

I have seen this setup in several toyotas that seemed to run it without problems. I think it would be fine.

Triaged · 03-14-2007, 07:54 PM

Just move the whole thing over IMO. Don't lean it.

drsmash · 03-14-2007, 08:24 PM

Nope this works fine,

pcorssmit · 03-15-2007, 06:36 AM

Quote:

Originally Posted by Triaged

Just move the whole thing over IMO. Don't lean it.

I wish I could. But since I'm not a fan of straight pipe exhaust on a trail rig, its not really an option.

Pete

Big91RustyBucket · 03-15-2007, 06:42 AM

Quote:

Originally Posted by drsmash

Nope this works fine,

How doe's that work . I alway's thought that you had to have 2 Link's to the axle to stop axle wrap. Otherwise it doesn't work?

jtaco1 · 03-15-2007, 07:58 AM

There is another tube underneath that you can't cause of the axle and driveshaft. You can see the tubes that are used to brace the traction bar bending around the driveshaft.

Kreep · 03-15-2007, 12:24 PM

Alternate mounting arrangements will work, but you need to keep the following in mind:

1) The distance between the mounts affects how much force is on the bushings. If the mounts are too close, the bushings will split. You will also have more force on each tube in the bar (having the bushings close together is like having a shorter lever arm trying to hold the axle from rotating).

2) Rotating the bushings will tend to make the angle between the tubes smaller, and thus the bar weaker. Basically you are moving from a truss to a single tube if you take this to the extreme of mounts in front/behind the axle. It would have to be one hell of a tube to hold up to that much bending moment.

Hvy_Chevy · 03-15-2007, 01:32 PM

Quote:

Originally Posted by Big91RustyBucket

How doe's that work . I alway's thought that you had to have 2 Link's to the axle to stop axle wrap. Otherwise it doesn't work?

check out his website and see what the rest of his system looks like.

03-14-2007, 02:38 PM	#1
pcorssmit Rock God Join Date: May 2001 Member # 4406 Location: Denver Posts: 2,246	Traction bar mounting—Do the upper and lower axle mounts need to be inline? Is there any reason that the upper and lower axle mounts for a ladder bar style (ie Sam’s Offroad style) traction bar need to be inline with each other? Specifically having the upper mount further towards the center, and the lower mount more outboard towards the passenger side? (When viewed from the front of the truck, the bar would look like / ) I’m trying to clear my exhaust. I am using bushings at the axle end, and the fixed end of the shackle, with a Johnny Joint at the shackle-end of the bar. I was planning to run the bushings in a horizontal orientation. Pete __________________ Life should not be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways , beer in hand, body thoroughly used up, totally worn out and screaming "WOW, what a ride."

03-14-2007, 02:44 PM	#2
rokcrwlrtj Registered User Join Date: Feb 2004 Member # 27180 Location: Grand Junction, CO Posts: 722	I have seen this setup in several toyotas that seemed to run it without problems. I think it would be fine. __________________ Save Tellico Post 296

03-14-2007, 07:54 PM	#3
Triaged Registered User Join Date: Jun 2001 Member # 5110 Location: SoCal Posts: 3,971	Just move the whole thing over IMO. Don't lean it. __________________ Link to thread on my calculator http://www.pirate4x4.com/forum/showthread.php?t=204893

03-14-2007, 08:24 PM	#4
drsmash Daily Driven Join Date: Jun 2002 Member # 12419 Location: carson city Posts: 1,531	Nope this works fine, Attached Images __________________ 81 toy with a few mods if your stuck in Carson City and need some welding help give me a call 775-884-4947 http://www.DrSmash.com

03-15-2007, 07:58 AM	#7
jtaco1 Granite Guru Join Date: Aug 2004 Member # 34250 Location: Marysville, PA Posts: 508	There is another tube underneath that you can't cause of the axle and driveshaft. You can see the tubes that are used to brace the traction bar bending around the driveshaft. __________________ JT DD - 05 Toyota 4 Runner Trail Rig - 88 4 Runner with dual cases w/ 4.7's, Tacoma E-locker rear, 37" PB Rockers and no lift Was 99' Toyota Tacoma Crushed by Toyota

03-15-2007, 12:24 PM	#8
Kreep Registered User Join Date: Sep 2002 Member # 14004 Location: Illinois Posts: 705	Alternate mounting arrangements will work, but you need to keep the following in mind: 1) The distance between the mounts affects how much force is on the bushings. If the mounts are too close, the bushings will split. You will also have more force on each tube in the bar (having the bushings close together is like having a shorter lever arm trying to hold the axle from rotating). 2) Rotating the bushings will tend to make the angle between the tubes smaller, and thus the bar weaker. Basically you are moving from a truss to a single tube if you take this to the extreme of mounts in front/behind the axle. It would have to be one hell of a tube to hold up to that much bending moment. __________________ 82 CJ7 - TBI 304/T18a/D300/44/70/4.88/40's 87 Samurai - GSX carbs/16V 1.6/GRS-II/linked rear/31's

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