Fationably Late Posted January 29, 2018 Report Share Posted January 29, 2018 Hey everyone, I may be posting this a little late, but I am wondering about the rule regarding the X-Brace door bar design. NASA tech approves the 'x' design without gussets and as far as I am aware, if it will pass NASA tech, then it should pass ChampCar tech, correct? I can get the gussets put in, but if the answer is a definitive "it will pass", then I'd rather spend my time doing other things. Here is a picture of the door bar as it stands, right now (the driver's side is identical): Link to comment Share on other sites More sharing options...
mhr650 Posted January 29, 2018 Report Share Posted January 29, 2018 That will pass, the main thing that ChampCar tech looks at is that at least one of the bars is a single piece of tubing. Link to comment Share on other sites More sharing options...
Fationably Late Posted January 29, 2018 Author Report Share Posted January 29, 2018 @mhr650 You are certain it will pass? I hate to get down there, for my first race, and find out the gussets are required. Are there other cars that have the x-brace without gussets? Is there a person that runs Tech that can chime in (if that's not you), or that I can contact directly, to ease my worry about this? Link to comment Share on other sites More sharing options...
hotchkis23 Posted January 29, 2018 Report Share Posted January 29, 2018 Try: Phil.McKinney@champcar.org Phil is head of tech. Expect a bit of a wait to hear back, but Phil is the man to ask. You can also CC tech@champcar.org as well, and see if you get a quicker response. The biggest part that I see being an issue is that you state the drivers side is the same, if so, that picture says it won't pass. The rules require 2 single piece bars, so a bar above or below the X that is unbroken connecting the main hoop vertical to the front hoop vertical will need to be added. Link to comment Share on other sites More sharing options...
Black Magic Posted January 29, 2018 Report Share Posted January 29, 2018 Read the rules and ask phil. I am pretty sure that is not legal, as the intent was to have 2 full side impact bars (ie always at least 2 tubes worth of cross section). Legal x bars would be the "double v" type (bent 2 vs and weld them together). Yours clearly is 1x cross thickness at the joint. Link to comment Share on other sites More sharing options...
Fationably Late Posted January 29, 2018 Author Report Share Posted January 29, 2018 Thanks for the quick responses guys, I have emailed Phil and tech to find out definitively. Link to comment Share on other sites More sharing options...
mhr650 Posted January 29, 2018 Report Share Posted January 29, 2018 Yeah my bad I thought this was only on the passenger side. Link to comment Share on other sites More sharing options...
JDChristianson Posted January 29, 2018 Report Share Posted January 29, 2018 I'm pretty sure you need gussets. 3.2.3. Two continuous/unbroken driver-side door bars (labeled “7”) that will prevent cockpit intrusion. NASCAR-style or X-design (with gussets) is acceptable Link to comment Share on other sites More sharing options...
Ogren-Engineering Posted January 29, 2018 Report Share Posted January 29, 2018 Add one more bar under this one and gussets. Link to comment Share on other sites More sharing options...
turbogrill Posted January 29, 2018 Report Share Posted January 29, 2018 Pretty sure you need 6" gussets. There was a big debate about this last year: In on of the 6 pages there is a drawing from a tech guy, just read all the posts Link to comment Share on other sites More sharing options...
Mopar 63 Posted January 29, 2018 Report Share Posted January 29, 2018 NO it will not pass tech as shown in the picture. It doesn't meet the rule shown below. 3.2.3. Two continuous/unbroken driver-side door bars (labeled “7”) that will prevent cockpit intrusion. NASCAR-style or X-design (with gussets) is acceptable But if you have a lower still bar and this X configuration it will pass. I would recommend adding gussets to all of these configurations. Phil McKinney Link to comment Share on other sites More sharing options...
moortom Posted January 29, 2018 Report Share Posted January 29, 2018 My team runs the same configuration. In order to meet the rule we added a sill bar as Phil described above. It was a fairly easy fix. Link to comment Share on other sites More sharing options...
takjak2 Posted January 29, 2018 Report Share Posted January 29, 2018 Pictured X bar in top post WILL NOT PASS. Requirement is for two continuous bars, or you add gussets. If you had a straight bar down at the door sill, that would make this X legal. Link to comment Share on other sites More sharing options...
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