drive shaft loop

How for back from the end of the transmission should the drive shaft loop be placed
Thanks

Supposed to be 6" from the joint.


But what do I know cause I am a - "I should expect that from a 21 year old, wet nosed, wanna be and faithful follower of someone else in Texas."

Thanks Randy...see you this weekend

Greg-P wrote:Supposed to be 6" from the joint.

yep, the front one..........

Yep 6 from the front yoke,and dont forget about the rear enclosure off the pinion support.

Greg-P wrote:Supposed to be 6" from the joint.

What if your shaft is only 4" from center of joint to center of

Barney wrote:Yep 6 from the front yoke,and dont forget about the rear enclosure off the pinion support.

Thanks guys.
Barney what do you mean rear enclosure off the pinion support? I was only planing on 1 loop, I only have 475 to 500 horsepower and am using solid u-joints?

I don't think the rear enclosure is a mandated item, hell I don't even have one.......but I probably should lol.

definatley do 2 loops, one in the front 6" back from the joint and one as far back as the car will allow. dont want to catipult the car with the shaft.

Greg-P wrote:definatley do 2 loops, one in the front 6" back from the joint and one as far back as the car will allow. dont want to catipult the car with the shaft.

Can't be too safe

Barb Nesbitt rule, it's enforced quite a bit up here. It basically bolts to the pinion support wit 4 bolts and is a tube that fully wraps around the driveshaft. In the case of a failure the driveshaft supposedly can't come through the floor and beat the crap out of you. A couple years ago it happened to Barb Nesbitt and beat her up pretty bad. It was in the rules the following year.

Front loop mounted within 6" of the front U-joint's centerline. Rear loop (when/where/if required) mounted within 6" of the rear U-joint's centerline.

Rear loop can be pinion mounted, or hung off of a chassis/frame structure. Rear loop is required in P/S, P/M, & T/S. It now may/may not be required in a bunch of other different national/local "fast" classes/circuits too by either the individual classe/circuit rules, or by local track rules.

But even if a given type of drag car might not need a rear loop to be legal (like say a 9.90 Super Gas car) a rear loop is still a damn good idea, as is a full DS inclosure.

Barney wrote:Barb Nesbitt rule, it's enforced quite a bit up here. It basically bolts to the pinion support wit 4 bolts and is a tube that fully wraps around the driveshaft. In the case of a failure the driveshaft supposedly can't come through the floor and beat the crap out of you. A couple years ago it happened to Barb Nesbitt and beat her up pretty bad. It was in the rules the following year.

Got any pics of these or where to buy, I need to make one

http://www.jerrybickel.com/driveshafts-and-components/rear-driveshaft-enclosure.html

i WOULD PUT ONE IN BACK ALSO,took the pinon gear out of the rearend on the starting line at norwalk,a couple years ago you should see what damage it did,I DIDN'T HAVE ONE THEN