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  #1  
Old November 2nd, 2020, 22:14
lordoeuf lordoeuf is offline
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Lengthen a Rubicon Express RE1660 trackbar

I have a '99 XJ with 5.5" of lift. I have an RE1660 HD trackbar with the RE1665 trackbar bracket. Rubicon Express' website says that it can accomodate 4-6" of lift and that it has "more length adjustability than other bars." It has been installed for 15 years on my '99 XJ with 5.5" of lift. The axle has always been about 1/2" out of centre when on level ground. The trackbar is fully extended, with a few threads grabbing inside the tube (I don't recall how many, perhaps somewhere in the 1/8" to 1/2" range). I just remember not feeling safe extending it any further. Is there any way to get more length out of this trackbar to centre the axle? Is Rubicon Express over selling the lift range of their product?

I figure that if I had a piece of threaded rod and a long sleeve, I can add length to the existing trackbar. Is there a better way to do this? Can Rusty's trackbar w/bracket (RC-TB200-UV) really accommodate 4-8" of lift? If so, why wouldn't Rubicon Express just make their trackbar a little longer? I e-mailed Rubicon Express about this issue, but no reply as of yet. I'm seeking assistance from the community. Thanks.
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  #2  
Old November 3rd, 2020, 05:49
RCP Phx RCP Phx is offline
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Re: Lengthen a Rubicon Express RE1660 trackbar

Rubicon Express used to sell a longer super-flex end. If they don't have any more contact me as I have 2 new ones here.
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Old November 3rd, 2020, 05:50
75SV1 75SV1 is offline
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Re: Lengthen a Rubicon Express RE1660 trackbar

How long are the threads? Would Barnes have longer threads? I think at 1/2 inch of threads, your skating thin ice.
https://www.barnes4wd.com/Forged-Pol...TPI_c_183.html
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Old November 3rd, 2020, 06:04
RCP Phx RCP Phx is offline
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Re: Lengthen a Rubicon Express RE1660 trackbar

Quote:
Originally Posted by 75SV1 View Post
How long are the threads? Would Barnes have longer threads? I think at 1/2 inch of threads, your skating thin ice.
https://www.barnes4wd.com/Forged-Pol...TPI_c_183.html
That's not even a flex joint and it doesn't have 1"-14 threads !!!
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Old November 3rd, 2020, 06:05
RCP Phx RCP Phx is offline
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Re: Lengthen a Rubicon Express RE1660 trackbar

They are also "female" threads.
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  #6  
Old November 3rd, 2020, 06:29
RCP Phx RCP Phx is offline
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Re: Lengthen a Rubicon Express RE1660 trackbar

I only see "loaded" joints now as opposed to the "shells" I bought back when.
https://frsport.com/super-flex-coupler-rod-end1819499
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Old November 3rd, 2020, 07:08
SlowXj SlowXj is offline
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Lengthen a Rubicon Express RE1660 trackbar

Full of thumb on minimum engagement of threads is diameter of threads.
Example a 1.25 heim should have 1.25 inches of thread engagement. .75 heim should have .75 thread engagement.

I think ironman4x4 has female flex joints if I recall correctly... Just another option.

Sent from my SM-G950U using Tapatalk
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Old November 3rd, 2020, 07:58
RCP Phx RCP Phx is offline
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Re: Lengthen a Rubicon Express RE1660 trackbar

Why try to re-invent the wheel? There is a exact fit part vs anything else you need to get correct thread size and length/Correct joint width and center bolt size!
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Old November 3rd, 2020, 14:23
lordoeuf lordoeuf is offline
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Re: Lengthen a Rubicon Express RE1660 trackbar

Oh look at those ends - they are 1" longer. Mine are only 2.25". Did my trackbar come with too short of a joint end on accident? Looking back at my e-mails from 2005, it looks like my trackbar came with the wrong end. They sent a replacement, but the width of the ball ends were wrong. They had to resend it yet again. So is the joint end casing supposed to be 3.25" or 2.25" long?

I do not remember how much thread I have inside the tube, it has been 15 years. Without taking it all apart, I have 1.3" of exposed thread as it sits installed. The lock nut is 0.5". So that is 1.8" of thread not in the tube. If we know the total length of the [male] threading, we can calculate how much is in the tube.

Rubicon Express did not reply to me concerning this. From my experience with them, if they are going to reply it is within 24-hrs.

How do I get ahold of one of these longer shell casings? Is that loaded joint you referenced, RE3768-1, the one with the 3.25" housing?
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Old November 3rd, 2020, 14:41
RCP Phx RCP Phx is offline
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Re: Lengthen a Rubicon Express RE1660 trackbar

The short ends were factory, I had the exact issue as you so I ordered the +1" ends about 15yrs ago. I called RE this morning and they do not sell just the shells anymore alone. The RE 3768 is the longer +1" end.
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  #11  
Old November 3rd, 2020, 15:04
lordoeuf lordoeuf is offline
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Re: Lengthen a Rubicon Express RE1660 trackbar

What's the dash one in the part number for? There is RE3768 and RE3768-1 ?
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Old November 3rd, 2020, 15:11
RCP Phx RCP Phx is offline
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Re: Lengthen a Rubicon Express RE1660 trackbar

I have no idea about that, RE's page doesn't show it that way.
https://rubiconexpress.com/Fabricati...28&t_pt=101460
If your interested in just the shell PM me.
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  #13  
Old November 3rd, 2020, 16:49
lordoeuf lordoeuf is offline
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Re: Lengthen a Rubicon Express RE1660 trackbar

Here's the RE3768,
https://rubiconexpress.com/Fabricati...=R%2fERE 3768

Here's the RE3768-1,
https://rubiconexpress.com/Fabricati...=R%2FERE3768-1

Any difference? Maybe the -1 has a larger opening in the ball to accommodate a wider bolt? the -1 is 1/2" opening while the regular one is 10 mm only?
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  #14  
Old November 3rd, 2020, 16:57
RCP Phx RCP Phx is offline
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Re: Lengthen a Rubicon Express RE1660 trackbar

There you go! I thought that was it, my link was just a example. The factory bolt with that set-up is a 10mm.
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  #15  
Old November 4th, 2020, 05:37
75SV1 75SV1 is offline
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Re: Lengthen a Rubicon Express RE1660 trackbar

Quote:
Originally Posted by SlowXj View Post
Full of thumb on minimum engagement of threads is diameter of threads.
Example a 1.25 heim should have 1.25 inches of thread engagement. .75 heim should have .75 thread engagement.

I think ironman4x4 has female flex joints if I recall correctly... Just another option.

Sent from my SM-G950U using Tapatalk
I measured the threads on the OTK Ironman Trackbar I have. They are 1-1/4 threads.
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