Dobinsons Adjustable Track Bar

[GreatWhtCrewmax]

I've been going through my front end on my 80 replacing all the joints and bushings. I'm lifted about 3" so instead of buying new track bar bushing and the slee DIY adjuster I decided to just go with a dobinsons adjustable track bar. My front axle seems to be about an 1.5 to the drivers side. So I wanted to split the difference and adjust about 3/4 of an inch (so my axle isn't to far off center at full bump). So to my actual question. With the dobinsons tract bar adjusted to 32 3/4" there is only about 3/4 thread engaugment. Does that seem right?

 

[Lumpskie]

How much thread is exposed outside of the nuts? My Dobinsons track bar with 3" lift has about 2 inches of thread showing?

 

[GreatWhtCrewmax]

In the picture the nut is set where the joint would bottom out to be the right length. If that makes since

 

[GreatWhtCrewmax]

If your talking g about the other side of the nuts. I didn't measure but if I had to guess it was between 3-4"s

 

[Lumpskie]

If your talking g about the other side of the nuts. I didn't measure but if I had to guess it was between 3-4"s

That's what I was referring to... I only have 2" of thread exposed.

 

[GreatWhtCrewmax]

Do you know how long your track bar is set too?

 

[GreatWhtCrewmax]

I guess another question is would you run it with that little thread engaugment?

 

[Grant Woodbridge]

To me this does seem a small amount. Dobinson is a good product doubt they would get it wrong. I would like to see double this.

 

[fjbj40]

That does not seem like much. I seem to remember a rule for rod ends to be a minimum of 1.5 x the diameter of the rod threads of engagement.

 

[MonsterCruiser]

My front axle seems to be about an 1.5 to the drivers side.

Maybe this is the issue. What are you measuring against to get 1.5"? Digging on mud I found a thread that mentions the stock front panhard is 31.75". Do the bit of math with the lift against the factory panhard length and that should more accurately tell you how long you should make your adjustable panhard bar.

 

[GreatWhtCrewmax]

My measurements my not be 100% because I was laying under the crusier. But even if there was a 1/4" more thread into the joint that still doesn't seem like enough, there would still only be about 1 1/4" of thread engaugment

 

[MonsterCruiser]

I think it's more than 1/4". Here's the thread that has the measurement:

Panhard Rod Adjustment??

I just got my front panhard rod finished and ready to install. My question is how many inches of thread should I be showing to obtain the correct adjustment for a slee 4" medium lift? I am running 315 75 R16 Firestone Destination witch so far I really like. I still need to finish my brake...

forum.ih8mud.com

There is also a comment on the length, and also comments on "not everyone's truck is the same", but with a 4" lift it was noted the bar should be 1/4" longer, so that would make it only 32". My math says you should be at 31.9" (I guess about 31-7/8"). At 32-3/4 you could be much too long.

 

[ChargedSHOTaco]

I think it's more than 1/4". Here's the thread that has the measurement:

Panhard Rod Adjustment??

I just got my front panhard rod finished and ready to install. My question is how many inches of thread should I be showing to obtain the correct adjustment for a slee 4" medium lift? I am running 315 75 R16 Firestone Destination witch so far I really like. I still need to finish my brake...

forum.ih8mud.com

There is also a comment on the length, and also comments on "not everyone's truck is the same", but with a 4" lift it was noted the bar should be 1/4" longer, so that would make it only 32". My math says you should be at 31.9" (I guess about 31-7/8"). At 32-3/4 you could be much too long.

Yep, that's the issue. I just installed a 3.5" lift and initially set my Dobinson Front Panhard bar at 32", and my axle is centered on the truck. Starting at 32.75" is way too much.

 

[GreatWhtCrewmax]

I'll have to spend more time with a measuring tape to check how far off center my axle is.

 

[GreatWhtCrewmax]

So I adjusted the bar to 32" and this is where it sits. This looks a lot better to me but it is still only 1 3/4" of thread engaugment on an 1 1/4" bar.

 

[GreatWhtCrewmax]

Got it installed today, I set it at 31 15/16. Looking at the crusier the axle is still visually off center just barley now, it's a lot better than before.

 

[jgonzales55]

Have you talked with Dobinsons? The rule of thumb for thread engagement that I was taught is that the diameter of the threaded part should be equal to the depth of penetration, so 3/4 diabeter tie rod end needs to be threaded 3/4 deep. I'd talk to dobs about it though.