So Is Anyone Going To 75/80 Tonight
09-11-2003, 07:18 AM
#194
Senior Member
Join Date: Aug 2002
Posts: 278
I am planning to go too. I want to see Mike's car run. I'm just not sure how to handle the lack of a roll bar.
Maybe actually test & tune or practice launches for two runs and only go down the track for time when I'm ready to go home anyway.
Maybe actually test & tune or practice launches for two runs and only go down the track for time when I'm ready to go home anyway.
09-12-2003, 06:55 AM
#197
Senior Member
Join Date: Jul 2003
Location: Westminster, MD
Posts: 629
I think its gonna rain us out guys!! 
I would just download that section of the NHRA rulebook.
I was gonna explain it but found the site online check it out here Tom.
http://www.nhra.com/contacts/tech_faq.html
Here is the gist of it straight from NHRA
When do I need a roll bar or roll cage, and what should it look like?
A roll bar is required in any convertible running 13.99 seconds or quicker in the quarter mile, and in other cars beginning at 11.99. The roll bar is accepted in vehicles running as quick as 10.00 second e.t., provided the stock firewall and floorboard is intact, other than for installation of wheel tubs. The rollbar must be constructed of minimum 1 ¾ inch o.d. x .118 inch wall mild steel tubing, or 1 ¾ x .083 chrome moly tubing, and must conform to the following diagram:
If the floor and/or firewall has been modified, then a full roll cage is required beginning at a 10.99 e.t. A full roll cage is required in any vehicle running 9.99 seconds or quicker, and any vehicle running 135 mph or faster (regardless of e.t.). The roll cage must be constructed of minimum 1 5/8 o.d.x .118 mild steel tubing, or 1 5/8 x .083 chrome moly tubing, and must conform to the following diagram:
The roll cage of any vehicle running 9.99 or quicker, or 135 mph or faster, must also be certified by NHRA every 3 years, and have a serialized sticker affixed prior to participation.
I would just download that section of the NHRA rulebook.
I was gonna explain it but found the site online check it out here Tom.
http://www.nhra.com/contacts/tech_faq.html
Here is the gist of it straight from NHRA
When do I need a roll bar or roll cage, and what should it look like?
A roll bar is required in any convertible running 13.99 seconds or quicker in the quarter mile, and in other cars beginning at 11.99. The roll bar is accepted in vehicles running as quick as 10.00 second e.t., provided the stock firewall and floorboard is intact, other than for installation of wheel tubs. The rollbar must be constructed of minimum 1 ¾ inch o.d. x .118 inch wall mild steel tubing, or 1 ¾ x .083 chrome moly tubing, and must conform to the following diagram:
If the floor and/or firewall has been modified, then a full roll cage is required beginning at a 10.99 e.t. A full roll cage is required in any vehicle running 9.99 seconds or quicker, and any vehicle running 135 mph or faster (regardless of e.t.). The roll cage must be constructed of minimum 1 5/8 o.d.x .118 mild steel tubing, or 1 5/8 x .083 chrome moly tubing, and must conform to the following diagram:
The roll cage of any vehicle running 9.99 or quicker, or 135 mph or faster, must also be certified by NHRA every 3 years, and have a serialized sticker affixed prior to participation.
09-12-2003, 10:13 AM
#200
Senior Member
Join Date: Jul 2003
Location: Westminster, MD
Posts: 629
Rain does suck I was gonna bring the car to work today too but not with this ****.
Tom most NHRA techs arent going to be that strict. Yes the whole plate thing sucks. I would bet that if you have some sort of roll bar or cage that is the right thickness you are fine. You dont have to worry about it until it has to be a NHRA inspected and certified cage. But you are a ways from 9.99's so no worries.
Tom most NHRA techs arent going to be that strict. Yes the whole plate thing sucks. I would bet that if you have some sort of roll bar or cage that is the right thickness you are fine. You dont have to worry about it until it has to be a NHRA inspected and certified cage. But you are a ways from 9.99's so no worries.