Anyone with an NHRA legal roll bar / cage in their car? - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Race Prep Miata race-only chat.
Sponsored by:
Sponsored by:

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 03-02-2010, 10:40 AM   #1
Junior Member
Thread Starter
iTrader: (3)
 
Join Date: Sep 2008
Location: Austin, TX
Posts: 51
Total Cats: 0
Default Anyone with an NHRA legal roll bar / cage in their car?

Looking for some examples for my GRM challenge car. I need to build a 5 point welded-in bar, as bolt in's require 6"x6" plates top and bottom to be legal, and where the hell are you gonna put those on a miata?

I know I need to talk to an NHRA inspector, but my main questions are these:
1. Is it legal to mount the main hoop to welded in plates on the leading edge of the rear deck like most of the bolt in bars? LINK - Everything I've read in the rules seems ambiguous.
2. Are the door bars allowed to have bends, and if so how many?
big jim is offline   Reply With Quote
Old 03-02-2010, 04:25 PM   #2
Elite Member
iTrader: (5)
 
Join Date: Apr 2007
Location: Wellford, SC
Posts: 1,704
Total Cats: 1
Default

Probably won't find much help for NHRA here... Best bet would be to talk to an inspector or NHRA cage builder for clarification.
thagr81 us is offline   Reply With Quote
Old 03-02-2010, 06:37 PM   #3
Elite Member
iTrader: (7)
 
Join Date: Jul 2009
Location: Gainesville,Fl
Posts: 3,354
Total Cats: 7
Default

Quote:
Originally Posted by big jim View Post
Looking for some examples for my GRM challenge car.
UTCC or $2010 challenge?
turotufas is offline   Reply With Quote
Old 03-02-2010, 06:38 PM   #4
Junior Member
Thread Starter
iTrader: (3)
 
Join Date: Sep 2008
Location: Austin, TX
Posts: 51
Total Cats: 0
Default

$2010, I'm a cheap ***. would be fun to take to the UTCC though.
big jim is offline   Reply With Quote
Old 03-02-2010, 06:58 PM   #5
Elite Member
iTrader: (7)
 
Join Date: Jul 2009
Location: Gainesville,Fl
Posts: 3,354
Total Cats: 7
Default

Cool I'll see you there. Good luck with everything.
turotufas is offline   Reply With Quote
Old 03-02-2010, 07:12 PM   #6
Elite Member
iTrader: (2)
 
miata2fast's Avatar
 
Join Date: Aug 2009
Location: Dover, FL
Posts: 2,904
Total Cats: 109
Default

It has been quite a while since I welded in a cage or had a cage welded into a drag car. If I recall, the door bar is supposed to pass between your shoulder and elbow when you are sitting in the car. You are not supposed to have bends pointing up or down, but you can have one pointing out towards the door to make room for the driver. I can not say for sure if you can have two bends in a door bar, but I have not seen a door bar with more than one bend.

As far as the main hoop meeting the floor, I have no idea. I never had a circumstance where that was an issue.
miata2fast is offline   Reply With Quote
Old 03-02-2010, 07:27 PM   #7
Junior Member
Thread Starter
iTrader: (3)
 
Join Date: Sep 2008
Location: Austin, TX
Posts: 51
Total Cats: 0
Default

Quote:
Originally Posted by turotufas View Post
Cool I'll see you there. Good luck with everything.
Right on - see you then, were you there last year? We brought the turbo BP festiva.

thanks for the clarification on the door bar miata2fast - I think I can get away with just a single bend in the door bar to clear my ultrashield seat.
big jim is offline   Reply With Quote
Old 03-02-2010, 07:38 PM   #8
Cpt. Slow
iTrader: (25)
 
curly's Avatar
 
Join Date: Oct 2005
Location: Oregon City, OR
Posts: 12,110
Total Cats: 518
Default

curly is offline   Reply With Quote
Old 03-02-2010, 07:50 PM   #9
Junior Member
Thread Starter
iTrader: (3)
 
Join Date: Sep 2008
Location: Austin, TX
Posts: 51
Total Cats: 0
Default

I actually emailed Sean to see if I could get a subset of the components, but they're all pre-packed. challenge rules specify no more than 5 points if it's welded in and I want to keep it free in the budget. They're concerned about us convertible guys stomping everybody with super stiff lightweight chassis.

I also think with my 6'2" height, their harness bar is actually slightly too high - must be below the top of the shoulders while the main hoop must be 3" above the top of the helmet. I'm going to mount the seat damn near directly to the floor.
big jim is offline   Reply With Quote
Old 03-02-2010, 11:24 PM   #10
Elite Member
iTrader: (7)
 
Join Date: Jul 2009
Location: Gainesville,Fl
Posts: 3,354
Total Cats: 7
Default

Quote:
Originally Posted by big jim View Post
Right on - see you then, were you there last year? We brought the turbo BP festiva.
I've been the last few years since I live in Gainesville. Its a cool event.
I remember you guys chilling in front of the concession area. I thought that little thing was badass.
turotufas is offline   Reply With Quote
Old 03-03-2010, 12:25 AM   #11
Junior Member
Thread Starter
iTrader: (3)
 
Join Date: Sep 2008
Location: Austin, TX
Posts: 51
Total Cats: 0
Default

we had a blast last year, been wanting to do it for years and that was the first time we'd been. yea the concession area was a perfect place to setup shop and watch the rest of the autocross runs while sipping on the yuengling keg. met a lot of cool people too.
big jim is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
91 1.6l turbo complete part out. Tony the Tiger Miata parts for sale/trade 63 12-29-2016 03:23 AM
Prepping my '95 for track asmasm Build Threads 82 05-26-2016 05:37 PM
1997 Miata Misty_Miata pineda92 Meet and Greet 4 09-20-2015 10:22 PM
1991 Turbo Miata partout tottestad Miata parts for sale/trade 18 09-14-2015 08:52 PM
WTB parts for HPDE car Voltwings WTB 5 09-11-2015 09:23 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 05:09 AM.