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I understand some of the points you're making S2KMyWay, but I'm not understanding everything. I believe jzr put his diagram back up as a visual aid for what those of us where trying to do with the 2 bolt approach. The idea was that by pinning the two bars together at each end, you are forcing both bars to take the load. This would seem to effectively increase the wall thickness of the outer bar by the amount of the inner.
In any case, the weak point here (and I think all agree) is the inner bar because that is where the shear load will be highest. Regardless of one bolt or two, you are still going to risk failure there (this has been proven by cases with 2 bolts and with just 1). I suppose you might significantly increase the number of cycles the material will take by religiously putting the pin in the softest adjustment hole, or by even switching back to the stock bar between events, but I think you'll only be buying a finite amount of time. My bar lasted (most of the time with 2 bolts) about 8 months and 4K street miles before failing, with quite a few autocrosses (~25).
I'm hoping to have Comptech look at the bar and see what they conclude soon.
Resurrecting this thread again as a reminder for anyone with the Comptech adjustable bar to make sure that you verify yours is whole and healthy. The majority of "serious" autoxers in our local area who have been running one have broken them. Most break at the inner bar on the stiffest hole adjustment point. Looks like it starts with some hole elongation, followed by a crack, followed by total failure. One case also broke at the "soft" end of the bar with a helical crack starting from the outer/inner bar weld points.
In any case, the number of autoxes, street miles, track days, etc. for the people with problems are all over the map. My guess is pretty much everyone will have a problem at some point. If you seem to be getting more wheelspin than normal or the car is unusually unstable, I suggest that you pull your bar off immediately and take a look at it.
Comptech is aware of the situation and is working on a solution, with an expected completion sometime in the next couple of months. Don't ask me for details, I just gave my bar to them.
I have a shop working on a bar. After looking at all the options for an adjustable bar. We've decided on a spline bar.
Remove the ends, loosen the mounts, slide out the track bar then slide in the street bar. No crawling under the car all this can be done with the wheels off when your changing back to street tires and brakes.
I can't believe how much Comptech gets for a bar that is a wear item by design. But at that price they can afford to replace them when they break.
The price hasn't been determined yet but it will be the most cost effective solution.
[QUOTE]Originally posted by s2k2fast4me
[B]Resurrecting this thread again as a reminder for anyone with the Comptech adjustable bar to make sure that you verify yours is whole and healthy.
I had my bar off the car this past week and my bar is failing as Andy descibed. It hasn't completely failed but the sleave for the bolt on the inner bar @ the 5th hole is loose and there is a hairline crack forming.........guess I'll drive it till it breaks and them ship it back to Comptech.
Is Comptech refunding money or just looking for a solution? Hopefully while their at it they'll came up with some new endlinks to!
I have run mine since march, and it is starting to creak. i am going to take if off and insect it. Is Comptech going to fix this? I had to fix it when I got it, it was not welded correctly.
The creaking may simply be the grease or Teflon tape being worn off at the bushings. I haven't regreased or retaped mine and have little to no noise. Banging noises would be a different story...
My bar started creaking and clunking. A liberal grease job and new teflon tape solved that problem. I'm using the bar on the next-to-stiffest setting, and so far haven't noticed any cracking or hole elongation problems. Guess I'm not driving hard enough .
Had a local event today and the bar finally failed completely. Took a few shots for posterity's sake.
Here's a shot of the crack that that I noticed a few weeks ago..........
Two events later and this is the result............
FWIW When it fails you will know it. Race tires and no front swaybar is a hand full! This bar had about 25 events on it. Some on concrete some asphalt. I'll be contacting Comptech tomorrow to inquire about what they have come up with in the way of a fix.
I believe jzr put his diagram back up as a visual aid for what those of us where trying to do with the 2 bolt approach. The idea was that by pinning the two bars together at each end, you are forcing both bars to take the load. This would seem to effectively increase the wall thickness of the outer bar by the amount of the inner. 
.
This bar had about 25 events on it. Some on concrete some asphalt. I'll be contacting Comptech tomorrow to inquire about what they have come up with in the way of a fix.
