1
#2619101
02/09/19 04:14 PM
02/09/19 04:14 PM
|
Joined: Aug 2003
Posts: 501 Easton, PA
68DART360
OP
mopar
|
OP
mopar
Joined: Aug 2003
Posts: 501
Easton, PA
|
2
Last edited by 68DART360; 02/10/19 11:44 AM.
|
|
|
Re: Driveshaft loop
[Re: 68DART360]
#2619117
02/09/19 05:06 PM
02/09/19 05:06 PM
|
Joined: Dec 2005
Posts: 12,289 Fulton County, PA
CMcAllister
Mr. Helpful
|
Mr. Helpful
Joined: Dec 2005
Posts: 12,289
Fulton County, PA
|
"For all full bodied cars - full bodied cars 7.50 to 13.99, front loop required on all cars except those running 11.49 and slower on street tires."
I would not call sticky Mickey radials a street tire. And I wouldn't trust the sticker and shoe polish hander outers at the local track to tell me what I need to be safe. The Rulebook is a minumum. Common sense has to be used as well.
Stock shaft, 7260 joints? Put a loop on it. And don't just attach it to the floor with sheet metal screws. It makes an awful mess when they get loose.
Last edited by CMcAllister; 02/09/19 05:09 PM.
If the results don't match the theory, change the theory.
|
|
|
Re: Driveshaft loop
[Re: 68DART360]
#2619120
02/09/19 05:36 PM
02/09/19 05:36 PM
|
Joined: Feb 2005
Posts: 4,333 Prospect, PA
BSB67
master
|
master
Joined: Feb 2005
Posts: 4,333
Prospect, PA
|
Do I need one if I am running M/T et street r's and running mid 12's. Would it be considered a slick or street tire? People's opinions will vary on what they believe is appropriately safe outside of the rule minimum. For me, I cannot render any opinion as you've not given nearly enough info. Like car weight, 60 time, and the specifics of your driveshaft. A long time ago when my car was running high 12s with a 2.0 sixty ft on BFG facials and factory 11 3/4" converter I did not have a loop. But I did have a Denny's Driveshaft built with a 1350 front yoke/joint, but retained the 1330 at the 8 3/4
|
|
|
Re: Driveshaft loop
[Re: BSB67]
#2619121
02/09/19 05:45 PM
02/09/19 05:45 PM
|
Joined: Dec 2003
Posts: 23,273 Here
jcc
If you can't dazzle em with diamonds..
|
If you can't dazzle em with diamonds..
Joined: Dec 2003
Posts: 23,273
Here
|
Only detail I would need for the OP's question, what solid reason could he make for not installing one, and taking the risk, regardless of the rules.
" All sorts of things can happen when you are open to new Ideas" Inventor of Kevlar
|
|
|
Re: Driveshaft loop
[Re: 68DART360]
#2619136
02/09/19 06:21 PM
02/09/19 06:21 PM
|
Joined: Dec 2005
Posts: 12,289 Fulton County, PA
CMcAllister
Mr. Helpful
|
Mr. Helpful
Joined: Dec 2005
Posts: 12,289
Fulton County, PA
|
My opinion is based on going mid 12s and radials. My assumption is it's with a 68 Dart, likely in the 3200lb range.
Rules are based on worst case scenario likely to be seen. Like hollow, worn out 7260s in an old beat up stock shaft. If there's a Strange CM shaft with good 1350 joints under there, then he certainly has an argument for not having a loop.
If the results don't match the theory, change the theory.
|
|
|
Re: Driveshaft loop
[Re: 68DART360]
#2619155
02/09/19 07:12 PM
02/09/19 07:12 PM
|
Joined: Nov 2009
Posts: 3,082 St. Paul , Mn.
tubtar
master
|
master
Joined: Nov 2009
Posts: 3,082
St. Paul , Mn.
|
Our first lap on a track was on street tires.......a '66 Cyclone with a big block. It spun for the first 75 feet , hooked finally and twisted the drive shaft in half shortly afterward. It shelled the transmission case and the front half tried to beat it's way through the floor. The loop paid for itself that day , and I doubt we needed one , per the rule book. My wife was driving , she took the car out of the groove to the right ( right lane ) and coasted to a stop near the finish line. This was at B.I.R. , we were the third set of cars on the Saturday a.m. time trials........the oil down caused a 45 minute delay and we made exactly zero friends that day. I learned a few things that morning , and drive shaft safety loops are damned good insurance is at the top of that list.
|
|
|
Re: Driveshaft loop
[Re: tubtar]
#2619226
02/09/19 11:17 PM
02/09/19 11:17 PM
|
Joined: Jan 2004
Posts: 13,247 Mt. Vernon, Ohio
dartman366
I Live Here
|
I Live Here
Joined: Jan 2004
Posts: 13,247
Mt. Vernon, Ohio
|
I would rather have one and not need it than need one and not have it,,,period.
Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.
|
|
|
Re: Driveshaft loop
[Re: 68DART360]
#2619276
02/10/19 02:06 AM
02/10/19 02:06 AM
|
Joined: Jan 2003
Posts: 20,328 Park Forest, IL
slantzilla
Too Many Posts
|
Too Many Posts
Joined: Jan 2003
Posts: 20,328
Park Forest, IL
|
Pretty sure with radials it is required, and also maybe long studs depending on wheel thickness.
"Everybody funny, now you funny too."
|
|
|
|
|