About Door Bars.
 

Anyone have any opinions about Door Bars? I am having a cage built and I wanted to look for advice. I dont want the 45% divide coning down.. its too much of a cage for a street car.. but if I have them I want them to server the purpose they were intended to do...... I like the style used on the Tiger cage but wasn't sure if they actually provided protection of it they sere just for looks.

TigerCage is NOT currently certified for racing in NHRA or SCCA sanctioning bodie just so you know.

I suggest you take a look at the cage rules at www.nhra.com for some info on cages, driveshaft loops etc...

later
John

Are you drag racing the car?

i would like to comply with SCCA and for NHRA i expect to be above 10 seconds were it starts to get strict... last i remember for 10.90 you only needed a DS loop, secured axles and a simple 4 point rollbar

I had a removable door bar in my 2001 Formula. It met all the safety requirements and when removed didn't get in the way.

Careful though.. meeting NHRA requirements is a slippery slope. Once you have a roll bar.. you then need 4 point harnesses.

I got removable door and "back" bars in my Camaro. I got the bolt in style that takes two countersunk Allen bolts on each joint. It is awesome and stiffened it up A TON!! After seeing Tim's nova pop the quarter panel when his pin style came loose at the MMCC a few years ago, I decided to go with a more rigid style.
https://www.ballisticfabrication.com...sp?itemid=1467
:thumbsup:

Unless you're building a 10.90 car -- which is doubtful -- run a four point bar. If you want more protection, add a halo and a-pillar bars through the top of the dash, then connect them with a sill bar 1" above the door sill. Unless you can bring the power AND the traction, forget the NHRA guide.

with out the side bar crossing between your shoulder and elbow it will NOT be NHRA legal.
and SCCA is totally different. you need to check the class rules. but either way it will be a PAIN for street driving.
i have my door bars down low same height as the seat pad. so not legal for any class but i figured with the full cage it may help some what in a frontal or side impact. it is still a PITA to get in and out.

It is hard to build a cage with door bars that meet all of the regulations of every sanctioning body. Pick the one you will race the most and build it per those rules.

I had a spring loaded swing out bar on my Sportsman car. The lock was made by Alstons and was legal to 8.50. Works better than a pin.


http://www.alstonracing.com/Catalog/...13%2011-9a.pdf
top of page 7.