Loops
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Registered User
Joined: Feb 2006
Posts: 508
Likes: 0
From: Vandalia, Il
Loops
I am haveing a problem understanding these. This is straight off the DHRA website.
If I read thise right only vehicles faster than 11.99 need them.
Or is it all 4x4's need them. I just don't want o get there and need them if I decide to try my luck at the track. Any one have the rights and wrongs with the rules. Here is the link to all the rules also.
http://www.dhraonline.com/main/forms...ook-v2.7.4.pdf
Driveline:
In place of a cross member, in the vicinity of the front universal joint, all vehicles running 11.99 or
quicker must have a retainer loop with 360 degrees of enclosure, 1/4 inch minimum thickness and
two inches wide, or 7/8 inch by 0.065 inch welded steel tubing, securely mounted and located
within six inches of the front universal joint to support the drive shaft in the event of U-joint failure.
4WD vehicles must have a retainer loop matching above description installed for the front drive
shaft. Long-bed trucks with a carrier bearing must have loops as described above on both rear drive
shafts. Open drivelines passing any part of the driver’s body must be completely enclosed in 1/8
inch minimum thickness steel plate, securely mounted to the frame or frame structure
In place of a cross member, in the vicinity of the front universal joint, all vehicles running 11.99 or
quicker must have a retainer loop with 360 degrees of enclosure, 1/4 inch minimum thickness and
two inches wide, or 7/8 inch by 0.065 inch welded steel tubing, securely mounted and located
within six inches of the front universal joint to support the drive shaft in the event of U-joint failure.
4WD vehicles must have a retainer loop matching above description installed for the front drive
shaft. Long-bed trucks with a carrier bearing must have loops as described above on both rear drive
shafts. Open drivelines passing any part of the driver’s body must be completely enclosed in 1/8
inch minimum thickness steel plate, securely mounted to the frame or frame structure
If I read thise right only vehicles faster than 11.99 need them.
Or is it all 4x4's need them. I just don't want o get there and need them if I decide to try my luck at the track. Any one have the rights and wrongs with the rules. Here is the link to all the rules also.
http://www.dhraonline.com/main/forms...ook-v2.7.4.pdf
Registered User
Joined: Nov 2005
Posts: 7,785
Likes: 3
From: Pattonville, Texas
Should be just for faster than 12 flat! (subject to tech's mood 
)
I feel your pain with the DHRA rulebook - I suspect it was written by IRS acolytes...
We can't get the '05 to fit into any of their classes w/o rebuilding it; the way we run it on the street and at the track, it has too many mods for hot street and not enough for Pro.
Best thing is to run a purpose-built truck!
What are you doing re the .375" bolts in the DP?
)I feel your pain with the DHRA rulebook - I suspect it was written by IRS acolytes...
We can't get the '05 to fit into any of their classes w/o rebuilding it; the way we run it on the street and at the track, it has too many mods for hot street and not enough for Pro.
Best thing is to run a purpose-built truck!
What are you doing re the .375" bolts in the DP?
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Dec 13, 2006 12:21 AM