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View Full Version : custom trackbar, DOM size?


VAhasnoWAVES
May 28th, 2013, 18:10
i am going to be doing crossover steering. im pretty sure ive gotten the steering under control. ruffstuff (http://www.ruffstuffspecialties.com/catalog/78STEER.html) did all the hard work for me, though i think ill source the DOM locally if it saves on shipping. i know i shouldnt need 5' sections either.


but what about my track bar? i want to use 7/8 x7/8 heims with 1.5x0.25 DOM again (same as drag link) to minimize the amount of different size heims that i need. is this sufficient?

BRIANHO13
May 28th, 2013, 18:38
Yes that is plenty.

Lowrange2
May 28th, 2013, 18:39
Yup, that's what I use.

sunburned
May 29th, 2013, 04:16
Judging by how it looks on the front of my jeep, it seems like overkill, but having a bunch of the same size heims is a good idea for spares.

camojeep88
May 29th, 2013, 17:44
i recently used 1.5-.188 wall chromoly on mine with 7/8 rod end and i like it

EricsXJ
May 29th, 2013, 21:18
i want to use 7/8 x7/8 heims with 1.5x0.25 DOM again (same as drag link) to minimize the amount of different size heims that i need. is this sufficient?

sufficient?? If anything its overkill due to wall thickness that will likely never (shouldn't) ever see contact with anything. But your materials for the track bar are exactly how I'm building mine (just welded the inserts in tonight) and I like it.

PatrickXJ
May 30th, 2013, 15:12
1.50 x .250 wall is overkill unless you're running hydraulic assist (or full), or you're turning tires bigger than 38's. I understand the idea behind running all similar heims (which 7/8 by 7/8 heims are overkill too unless you're running 40's) but keep in mind all steering parts and at least 50% of the track bar all add to UNSPRUNG weight.

More unsprung weight = more expensive shocks (or a less desirable ride).

My vote would be 1.25 x .125 DOM (not ERW) and keep it straight with no bends. With heims at both ends you'd have to be jumping the Jeep or get into a nasty car crash to bend that.

rockclimber
May 30th, 2013, 15:50
1.50 x .250 wall is overkill unless you're running hydraulic assist (or full), or you're turning tires bigger than 38's.

when properly set up, hydraulic assist or full hydro will actually lessen the amount of force the panhard sees.


I understand the idea behind running all similar heims (which 7/8 by 7/8 heims are overkill too unless you're running 40's) but keep in mind all steering parts and at least 50% of the track bar all add to UNSPRUNG weight.
while I don't disagree with your statement about weight, 7/8" heims are hardly overkill for a panhard, any smaller and you will wear out the races way too fast. you can get away with 3/4" heims for a while, but the 7/8" are almost no more weight, but are better for wear.



More unsprung weight = more expensive shocks (or a less desirable ride).

no.


My vote would be 1.25 x .125 DOM (not ERW) and keep it straight with no bends. With heims at both ends you'd have to be jumping the Jeep or get into a nasty car crash to bend that.

I agree with this. you will also enjoy the extra clearance you get having the smaller diameter material


but instead of running 7/8x7/8 heims, I would run 7/8x3/4" heims... but if you already have the heims, it doesn't matter any.

VAhasnoWAVES
May 30th, 2013, 18:59
well... plans changed a little, but im still going with heims all around.

i was told on a few accounts that D30 knuckles really dont have enough meat to run a 3/4" bolt. Im using WJ knuckles. some measuring showed that the large side of the tape for the TREs was barely over 5/8", so ill be going with this steering kit:
http://www.ruffstuffspecialties.com/catalog/34STEER.html

also going with the 7/8x3/4 heims as you suggested rockclimber:
http://www.ruffstuffspecialties.com/catalog/PANKIT.html

best part is a guy from the local chapter is selling them to me. i found a deal (when i was ACTUALLY looking for one, go figure) and cant believe how fortunate i am for the price im getting.

foxwar71
May 31st, 2013, 04:23
Steering and trackbar on mine are all 1.5x.25 dom with 7/8x3/4 hiems. The tie rod and track bar dont need and misalignment so they just have standard spacers and 3/4 bolts. Drag link has high misalignment spacers and uses 5/8 bolt. I also have hydro assist on the tie rod. Personally I wouldn't run anything smaller then that (even on a 30), maybe some 1.25x.25 tubing drilled/tapped without inserts if the space is needed. I prefer a 7/8x3/4 hiem over 7/8x7/8 hiem too since the body of the joint is a lot larger too and gives the hiem a stronger overall rating. Same applies for a 3/4x5/8 vs 3/4x3/4 hiem.

vetteboy
May 31st, 2013, 05:49
while I don't disagree with your statement about weight, 7/8" heims are hardly overkill for a panhard, any smaller and you will wear out the races way too fast. you can get away with 3/4" heims for a while, but the 7/8" are almost no more weight, but are better for wear.

I ran 3/4" heims on both sides of my front upper link, both sides of the panhard, and both ends of the uppers in my rear 4 link. I replaced 2 in over 5 years, half of which were spent racing. Don't use junk, it'll last longer.


no.

He's actually not wrong there. Unsprung weight sucks for damping.

sunburned
May 31st, 2013, 06:07
i was told on a few accounts that D30 knuckles really dont have enough meat to run a 3/4" bolt.

Hope my knuckles don't assplode.

supertubesocks
May 31st, 2013, 10:00
i am going to be doing crossover steering. im pretty sure ive gotten the steering under control. ruffstuff (http://www.ruffstuffspecialties.com/catalog/78STEER.html) did all the hard work for me, though i think ill source the DOM locally if it saves on shipping. i know i shouldnt need 5' sections either.


but what about my track bar? i want to use 7/8 x7/8 heims with 1.5x0.25 DOM again (same as drag link) to minimize the amount of different size heims that i need. is this sufficient?

You dont need 5 foot sections for a d30.
50" and 40" would still leave you plenty of extra tubing.

rockclimber
May 31st, 2013, 10:46
I ran 3/4" heims on both sides of my front upper link, both sides of the panhard, and both ends of the uppers in my rear 4 link. I replaced 2 in over 5 years, half of which were spent racing. Don't use junk, it'll last longer.


What brand Heims? He's talking about the ruffstuff ones, which are Midwest control iirc. I've run Both on my panhard and went through 3 3/4" before switching to 7/8" on advice from ruffstuff. I've yet to kill one of them. There is a significant amount of difference in race size between the two. Not all Heims are created equal.


He's actually not wrong there. Unsprung weight sucks for damping.

Yes, but saying that you need expensive shocks because your panhard is too heavy is silly...

You need expensive shocks because you need them, for whatever reason that may be. Usually because you want to go fast and you want to tune them.

The weight difference between a .120 wall panhard and a .250 wall panhard is not significant enough to affect the ride quality of a rig.

PatrickXJ
May 31st, 2013, 12:13
The weight difference between a .120 wall panhard and a .250 wall panhard is not significant enough to affect the ride quality of a rig.
^^^
That kind of thinking, when applied to an entire vehicle's build, can add up to quite a bit of weight.

I totally agree with the 7/8 x 3/4 heim though.

PatrickXJ
May 31st, 2013, 12:25
when properly set up, hydraulic assist or full hydro will actually lessen the amount of force the panhard sees.
Lol, not when you're pinned between a rock and a hard place. When you're moving boulders the size of Volkswagen bugs with your tires, there's quite a bit of stress on the track bar. That's why the track bar on my buggy is 2" solid bar.


On the street though, absolutely...less force on the track bar because the tires turn without much resistance.

rockclimber
May 31st, 2013, 17:34
Lol, not when you're pinned between a rock and a hard place. When you're moving boulders the size of Volkswagen bugs with your tires, there's quite a bit of stress on the track bar. That's why the track bar on my buggy is 2" solid bar.


On the street though, absolutely...less force on the track bar because the tires turn without much resistance.

physics disagrees with you.