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Re: Roll cage tubing ????
[Re: sg66mopar]
#1697696
11/11/14 10:42 PM
11/11/14 10:42 PM
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Joined: Jun 2010
Posts: 1,144
wellington ohio
68-scatpack-rt
In thin ice
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In thin ice
Joined: Jun 2010
Posts: 1,144
wellington ohio
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I believe the common thickness for chromoly is: .083 and .120 is common for mild steel.
Common for roll bar tubing, that is.
unions....the folks who brought you the weekend!
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Re: Roll cage tubing ????
[Re: mac56]
#1697698
11/11/14 11:01 PM
11/11/14 11:01 PM
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Joined: Dec 2005
Posts: 11,570
Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 11,570
Fulton County, PA
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.095 x 1.75 CM is pretty stout stuff. I haven't fooled with any but I expect it would take a decent bender to bend that. AED in Indianapolis has tubing that size. No idea what it would take to get it to you. I hope your guys know how to calibrate the sonic testers correctly. Apparently when they started using them to check bars here, they didn't. Created a lot of problems later on when they learned how to do it right. I know of more than one car that had passed a couple of times and then all of a sudden wasn't legal.
Last edited by CMcAllister; 11/11/14 11:03 PM.
If the results don't match the theory, change the theory.
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Re: Roll cage tubing ????
[Re: mac56]
#1697701
11/12/14 02:06 AM
11/12/14 02:06 AM
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Joined: Dec 2006
Posts: 2,112
Byron, NY
W.I.N. Racing
top fuel
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top fuel
Joined: Dec 2006
Posts: 2,112
Byron, NY
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You might want to look at one of these of they are going to sonic them they might also see if the meet some type of spec ???????????
Spec #/_______Tractors/__________________________Current Revision Date/__Price ($US)
47.1/ Driver Roll Cage for Use on 7,000 To 10,000 lbs. Tractors/ June 26, 1998/ 38.00
47.2/ Driver Roll Cage for Use on Tractors, Less Than 6,000 lbs./ June 26, 1998/ 38.00
47.3/ Driver Roll Cage for Use on “Mini-Rod” Tractors, Less Than 2,000 lbs./ June 26, 1998/ 38.00
'01 P1500, Blown/Inj BAE,/Veney ,Bruno/CS2,Dana 60
'01 Dodge 3500 S Cummins Auto, Fresh air kit, 4" Exhaust,
'05 Dodge Magnum R/T - Too Much to list
'60 Willys CJ5
'01 International LPX - Project,DT466, Allison
'64 Plymouth Valiant, Inj 528 Hemi, 2spd
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Re: Roll cage tubing ????
[Re: W.I.N. Racing]
#1697702
11/12/14 04:23 AM
11/12/14 04:23 AM
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Joined: Jan 2011
Posts: 4,785
Utah and Alaska
astjp2
master
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master
Joined: Jan 2011
Posts: 4,785
Utah and Alaska
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Also be on the lookout for fake CM, there was a bunch imported from China that did not meet spec even though it was labeled 4130 normalized...Tim
1941 Taylorcraft
1968 Charger
1994 Wrangler
1998 Wrangler
2008 Kia Rio
2017 Jetta
I didn't do 4 years and 9 months of Graduate School to be called Mister!
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Re: Roll cage tubing ????
[Re: astjp2]
#1697703
11/12/14 09:08 AM
11/12/14 09:08 AM
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Joined: Jan 2003
Posts: 1,999
s. e. pa.
calrobb2000
top fuel
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top fuel
Joined: Jan 2003
Posts: 1,999
s. e. pa.
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hi how do you know if it is fake 4130 ?? thank you ! 
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Re: Roll cage tubing ????
[Re: W.I.N. Racing]
#1697704
11/12/14 09:26 AM
11/12/14 09:26 AM
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Joined: Oct 2005
Posts: 976
ontario canada
mac56
OP
super stock
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OP
super stock
Joined: Oct 2005
Posts: 976
ontario canada
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Quote:
You might want to look at one of these of they are going to sonic them they might also see if the meet some type of spec ???????????
Spec #/_______Tractors/__________________________Current Revision Date/__Price ($US)
47.1/ Driver Roll Cage for Use on 7,000 To 10,000 lbs. Tractors/ June 26, 1998/ 38.00
47.2/ Driver Roll Cage for Use on Tractors, Less Than 6,000 lbs./ June 26, 1998/ 38.00
47.3/ Driver Roll Cage for Use on “Mini-Rod” Tractors, Less Than 2,000 lbs./ June 26, 1998/ 38.00
Bill that is exactly why we are changing the cage on this tractor. It has to meet the SFI 47.3 spec which is 1.75 .095 chromoly or 1.875 .083 mild which is over kill for the class because this spec is for ntpa 2000 hp minis. the club requesting this does not allow that class of tractor. It is like putting 8.90 cage in a twelve second car. The 2 choices seem out of wack to me be I haven't looked up how the 2 choices compare to each other.
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Re: Roll cage tubing ????
[Re: mac56]
#1697707
11/12/14 09:40 PM
11/12/14 09:40 PM
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Joined: Dec 2006
Posts: 2,112
Byron, NY
W.I.N. Racing
top fuel
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top fuel
Joined: Dec 2006
Posts: 2,112
Byron, NY
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Quote:
Quote:
You might want to look at one of these of they are going to sonic them they might also see if the meet some type of spec ???????????
Spec #/_______Tractors/__________________________Current Revision Date/__Price ($US)
47.1/ Driver Roll Cage for Use on 7,000 To 10,000 lbs. Tractors/ June 26, 1998/ 38.00
47.2/ Driver Roll Cage for Use on Tractors, Less Than 6,000 lbs./ June 26, 1998/ 38.00
47.3/ Driver Roll Cage for Use on “Mini-Rod” Tractors, Less Than 2,000 lbs./ June 26, 1998/ 38.00
Bill that is exactly why we are changing the cage on this tractor. It has to meet the SFI 47.3 spec which is 1.75 .095 chromoly or 1.875 .083 mild which is over kill for the class because this spec is for ntpa 2000 hp minis. the club requesting this does not allow that class of tractor. It is like putting 8.90 cage in a twelve second car. The 2 choices seem out of wack to me be I haven't looked up how the 2 choices compare to each other.
Problem is you need to buy both cert books to get the details...but cheaper in the long run vs wasting time and tube
'01 P1500, Blown/Inj BAE,/Veney ,Bruno/CS2,Dana 60
'01 Dodge 3500 S Cummins Auto, Fresh air kit, 4" Exhaust,
'05 Dodge Magnum R/T - Too Much to list
'60 Willys CJ5
'01 International LPX - Project,DT466, Allison
'64 Plymouth Valiant, Inj 528 Hemi, 2spd
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Re: Roll cage tubing ????
[Re: mac56]
#1697709
11/12/14 10:32 PM
11/12/14 10:32 PM
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Joined: Dec 2005
Posts: 11,570
Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 11,570
Fulton County, PA
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Quote:
Quote:
You might want to look at one of these of they are going to sonic them they might also see if the meet some type of spec ???????????
Spec #/_______Tractors/__________________________Current Revision Date/__Price ($US)
47.1/ Driver Roll Cage for Use on 7,000 To 10,000 lbs. Tractors/ June 26, 1998/ 38.00
47.2/ Driver Roll Cage for Use on Tractors, Less Than 6,000 lbs./ June 26, 1998/ 38.00
47.3/ Driver Roll Cage for Use on “Mini-Rod” Tractors, Less Than 2,000 lbs./ June 26, 1998/ 38.00
Bill that is exactly why we are changing the cage on this tractor. It has to meet the SFI 47.3 spec which is 1.75 .095 chromoly or 1.875 .083 mild which is over kill for the class because this spec is for ntpa 2000 hp minis. the club requesting this does not allow that class of tractor. It is like putting 8.90 cage in a twelve second car. The 2 choices seem out of wack to me be I haven't looked up how the 2 choices compare to each other.
1.75 is as common as it gets. Any chassis shop will have dies to bend that as long as the machine will do it. I have no idea where you would get 1.875 bent. Not a chassis shop that I know of.
If the results don't match the theory, change the theory.
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