Changes in the Door Bar Rules??

Originally posted by Knestis@Nov 2 2005, 10:34 AM
I also wasn't planning on using a dash bar as an excuse to take dash/heaterbox/controls out, like I see some folks do... :)

K
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Grrr...I thought the rule allowed for movement of the controls, not the exclusion of them>?

I hope I am wrong....and if I'm not, I hope everyone who cheats like that has to run in the rain for the rest of thier lives.
 
Kirk,

On my A3 I did the dash bar following the boxed section under the window as seen below. The stock brace is indeeed a very nice piece that ties the structure together and I was able to just notch a little bit of the ends to fit it. You can see the two holes for the bolts on each end of the tube. This stamped metal composite just did not give me comfort in keeping the the A pillar downtubes and the firewall away from me. This routing also allows the heater box/fan to stay in place. You can get the non-AC parts to attach to the AC heater box (they are the same). The dash and controls, including the stock guage cluster fit right back in.

Dave Z


Originally posted by Knestis@Nov 2 2005, 10:34 AM
We elected to not add a dash bar, because of the presence of that massive black-painted structure that bolts across that space. It is essentially trapped between the uprights - though not attached to them, obviously- and is way stouter than a tube would be. I also wasn't planning on using a dash bar as an excuse to take dash/heaterbox/controls out, like I see some folks do... :)

When things settle down next week, I'm going to do the math and figure out what this one weighs, and compare it to Pablo's first cage. Should be interesting.

K
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Sorry - Dave is absolutely correct that it is indeed doable, without taking liberties with the HVAC unit etc. We just didn't think that it afforded the kind of cost/benefit that a dash bar would in, say, an A1 Rabbit that doesn't have that huge brace. I'm of the opinion that this one piece accounts for a chunk of the weight difference between a "bare" A2 and an equally naked A3 tub.

K
 
Another late arrival.

To add to the "X" debate:
If I remember right, a lot of the Club Rally cars I've seen in the past had "X" bars on both sides. Or they were similar to Kirk's cage (which looks great).
Shine Racing also used the "X" for thier cars. I saw the 'after' of one of the cars at the 1999 ARRC. It was a big hit destroying all ahead of the firewall, but the main cockpit was fine.
 
Interesting update...

Calculations indicate that the new rollcage includes 13 feet more tubing that the one it replaces but weighs only 6 pounds more - 109 pounds. This is not counting gussets and mounting plates in both designs, the previous of which had more of both. This, thanks to use of 1.5 rather than 1.75" OD tube.

Approximately 9 pounds were saved using the thinner-wall tubing in optional diagonals, compared to how much it would have weight with .095 wall throughout.

K
 
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