Go Back  RX7Club.com - Mazda RX7 Forum > Tech and Performance > Race Car Tech
Reload this Page >

Trying to determin if this cage meets scca req's

Race Car Tech Discuss anything related to road racing and auto X.

Trying to determin if this cage meets scca req's

Old 02-18-08, 04:31 PM
  #1  
Learned alot | Alot to go
10 Year Member
Thread Starter
iTrader: (2)
 
CrackHeadMel's Avatar
 
Join Date: Apr 2002
Location: Rotaryland, New Hampshire
Posts: 4,233
Likes: 0
Received 0 Likes on 0 Posts
Trying to determin if this cage meets scca req's

I understand that some req's are determined by the installation of the cage, however im just trying to see if this meets req's as far as the construction of the cage.

Its an S&W mild steel 8pt cage for an s4, it looks like a 1pc halo from the blueprints
Attached Files
File Type: pdf
11-5566.pdf (26.4 KB, 100 views)
CrackHeadMel is offline  
Old 02-18-08, 05:43 PM
  #2  
GET OFF MY LAWN
10 Year Member
iTrader: (1)
 
jgrewe's Avatar
 
Join Date: Feb 2005
Location: Fla.
Posts: 2,838
Likes: 0
Received 0 Likes on 0 Posts
No, for two reasons. First the material is electric weld steel. Otherwise known as ERW. Its seamed tubing that isn't drawn over mandrel (DOM). Second, the vertical parts of the main hoop are in too far. IIRC SCCA has something about the main hoop being 180 degrees total bends, with 10 degrees more or less allowed.

I just looked through the GCR, there has been a huge rewrite of the cage rules but the ERW still disqualifies it.

Last edited by jgrewe; 02-18-08 at 05:56 PM.
jgrewe is offline  
Old 02-18-08, 06:38 PM
  #3  
Learned alot | Alot to go
10 Year Member
Thread Starter
iTrader: (2)
 
CrackHeadMel's Avatar
 
Join Date: Apr 2002
Location: Rotaryland, New Hampshire
Posts: 4,233
Likes: 0
Received 0 Likes on 0 Posts
http://www.scca.com/documents/Solo%2...lo_Rules_2.pdf

08 solo rules, pg 217 or appendix C., B pt1 says that although they reccomend against ERW (which i will take into count for my setup) that it isnot illegal.

Also i didnt see any mention of the 180deg thing you mentioned, if i missed it please let me know
CrackHeadMel is offline  
Old 02-18-08, 06:53 PM
  #4  
Learned alot | Alot to go
10 Year Member
Thread Starter
iTrader: (2)
 
CrackHeadMel's Avatar
 
Join Date: Apr 2002
Location: Rotaryland, New Hampshire
Posts: 4,233
Likes: 0
Received 0 Likes on 0 Posts
Ok, but the GCR says its not allowed? However its for club racing?

Hillclimbs fall under solo racing correct?
CrackHeadMel is offline  
Old 02-18-08, 06:56 PM
  #5  
Senior Member
5 Year Member
iTrader: (2)
 
Join Date: Dec 2005
Location: Wauwatosa Wisconsin
Posts: 266
Likes: 0
Received 0 Likes on 0 Posts
****Also i didnt see any mention of the 180deg thing you mentioned, if i missed it please let me know***

The 180* rule is for real race cars for road racing. You can look up the road racing rules if you car by going to the SCCA stie.
David Dewhurst is offline  
Old 02-18-08, 06:58 PM
  #6  
Learned alot | Alot to go
10 Year Member
Thread Starter
iTrader: (2)
 
CrackHeadMel's Avatar
 
Join Date: Apr 2002
Location: Rotaryland, New Hampshire
Posts: 4,233
Likes: 0
Received 0 Likes on 0 Posts
Ok, im only looking to do solo events, so that doesnt apply then?

Where in the GCR is the 180 rule though, i didnt see it even in there? i only looked in section 9 though
CrackHeadMel is offline  
Old 02-18-08, 08:38 PM
  #7  
GET OFF MY LAWN
10 Year Member
iTrader: (1)
 
jgrewe's Avatar
 
Join Date: Feb 2005
Location: Fla.
Posts: 2,838
Likes: 0
Received 0 Likes on 0 Posts
I didn't see it in the new write up either, I'm going to have to dig through these new rules.

Hillclimbs used to fall under the SOLO 1 rules(do they still have SOLO 1?) If not, I don't know where they fit now. SOLO 1 was kind of weird, they had some stuff like road racing, some like SOLO2.

Whatever you end up with for rules, that specific cage would only be legal in classes that don't require a cage because of the ERW.
jgrewe is offline  
Old 02-18-08, 08:48 PM
  #8  
Learned alot | Alot to go
10 Year Member
Thread Starter
iTrader: (2)
 
CrackHeadMel's Avatar
 
Join Date: Apr 2002
Location: Rotaryland, New Hampshire
Posts: 4,233
Likes: 0
Received 0 Likes on 0 Posts
G'damn im confused now. I dont feel like digging though pdf's atm however iirc hillclimbs req a cage and are under solo rules, as they require a solo licence

i spose ill email someone in the morning,
CrackHeadMel is offline  
Old 02-18-08, 09:05 PM
  #9  
Learned alot | Alot to go
10 Year Member
Thread Starter
iTrader: (2)
 
CrackHeadMel's Avatar
 
Join Date: Apr 2002
Location: Rotaryland, New Hampshire
Posts: 4,233
Likes: 0
Received 0 Likes on 0 Posts
http://www.scca.com/documents/Club%20Rules/2007TTR.pdf

yes its the 07 gcr, but i couldnt find the 08

ERW is permmited in a club racing car only if registared before 2003

and all the hillclimb stuff seems to fall under timetrials which who's rules are discribed though the GCR

long story short, i have to get the DOM version of the cage @ 2.5x the price

i again didnt see any mention of the 180* thing anywhere in section 11.4 which was hillclimb cage stuff
CrackHeadMel is offline  
Old 02-18-08, 09:15 PM
  #10  
GET OFF MY LAWN
10 Year Member
iTrader: (1)
 
jgrewe's Avatar
 
Join Date: Feb 2005
Location: Fla.
Posts: 2,838
Likes: 0
Received 0 Likes on 0 Posts
Check 11.3.2 on page TTR62 you will see the 180 degree rule.

It looks like they have changed the name of SOLO1 to Time Trials. I think I remember something about that now.

Last time I bought DOM a couple months ago it was $5.30 a foot for 1 3/4" .095 wall. It looks like ERW is still legal in the classes that don't require cages, like I had said. If you have any dreams of wheel to wheel or consider resale value DOM is the way to go.
jgrewe is offline  
Old 02-18-08, 09:21 PM
  #11  
Learned alot | Alot to go
10 Year Member
Thread Starter
iTrader: (2)
 
CrackHeadMel's Avatar
 
Join Date: Apr 2002
Location: Rotaryland, New Hampshire
Posts: 4,233
Likes: 0
Received 0 Likes on 0 Posts
i dont plan on wheel to wheel with this car atleast

hillclimbs in open require a cage, i belive my car falls in there due to the cosmo re, and standalone among other things

the following page shows that level 4 has the same req's, 180*max +/-10 with that cage showing 215.

thanks for the help, im going to check with them to see if its possible to have the lower 40* bends opened up, if not, ill keep shopping.
CrackHeadMel is offline  
Old 02-18-08, 10:02 PM
  #12  
GET OFF MY LAWN
10 Year Member
iTrader: (1)
 
jgrewe's Avatar
 
Join Date: Feb 2005
Location: Fla.
Posts: 2,838
Likes: 0
Received 0 Likes on 0 Posts
If you're looking for a weld in cage that you can install I can do the bending and most of the fitting. You can see my own cage in a thread I have around here
https://www.rx7club.com/showthread.p...ght=eprod+born You don't need to get that elaborate but a simple cage would be easy to bend, cut and ship. PM me if you can't find anything close to you.
jgrewe is offline  
Old 02-24-08, 09:02 AM
  #13  
Learned alot | Alot to go
10 Year Member
Thread Starter
iTrader: (2)
 
CrackHeadMel's Avatar
 
Join Date: Apr 2002
Location: Rotaryland, New Hampshire
Posts: 4,233
Likes: 0
Received 0 Likes on 0 Posts
pm sent.
CrackHeadMel is offline  
Old 02-25-08, 05:39 AM
  #14  
Junior Member
5 Year Member
 
Join Date: Mar 2006
Location: hampden ma
Posts: 33
Likes: 0
Received 0 Likes on 0 Posts
As said SCCA hillclimbs are part of time trials which comes under club racing along with what used to Solo 1. That said SCCA does not run any hillclimbs in New England. They are run by three local clubs. If all you want to so is local hillclimbs you could contact them to see what the minimum standard is. There website is Hillclimb.org.
That said if at all possible a would use a SCCA legal cage. That way you know you will be able to go to the NE Pennsylvania SCCA hills, you could do time trial with any club or if you wanted to in the future you could race the cat in ITE at NHIS.
A custom cage would fit tighter making the cage less intrusive, kind of important in a dual purpose car.
From what I have seen of Jgrewe’s stuff if you can do the install and welding , he could probably bend up a nice piece, but remember the welding has to be good. There are some local guys who are very good if you don’t have the skills to finish it yourself. Someone like Chris Howard or Dave Patton if he has time would be good choices.
Dick Patullo
Ita15 is offline  
Old 02-25-08, 07:19 PM
  #15  
Learned alot | Alot to go
10 Year Member
Thread Starter
iTrader: (2)
 
CrackHeadMel's Avatar
 
Join Date: Apr 2002
Location: Rotaryland, New Hampshire
Posts: 4,233
Likes: 0
Received 0 Likes on 0 Posts
Thanks for that link, i didnt have that one, only pa hill climbs


Due to costs i think im going to have to wait to cage my car. i could get aaway without a dom cage from what ive read for the hillclimbs with the neha, howevr id hate to cage my car, only to later want to do something else and have it be illegal
CrackHeadMel is offline  
Old 03-01-08, 08:16 AM
  #16  
Got Rotors?
5 Year Member
iTrader: (1)
 
dgemotorsports's Avatar
 
Join Date: Mar 2006
Location: Vancouver, WA
Posts: 35
Likes: 0
Received 0 Likes on 0 Posts
In my opinion ERW should not be allowed in any sanctioned racing class and I refuse to use ERW in NHRA roll cages or even a street roll bar because of it's inferior qualities even though it's legal in NHRA.

I have been told that DOM is about 30% stronger than ERW and when bending both I would have to agree with that number. I can take the exact same size tubing in both materials and the ERW bends like butter compared to the DOM.

Just my opinion from years of building cages.
dgemotorsports is offline  
Old 03-01-08, 10:29 AM
  #17  
Senior Member
10 Year Member
 
cagedruss's Avatar
 
Join Date: Aug 2004
Location: Portland,Or
Posts: 309
Likes: 0
Received 0 Likes on 0 Posts
The SCCA rules omitted a lot of stuff this year. Number of bends, maximum bend angles and also I could not find the formula for Engineer specs to allow other types of cages. I heard that there may be some sups to correct the over sight.

Call S&W to see if they will do it in DOM, Morrison offers a cage that may. The only real issue I have with the Kits that they are so freaking heavy. The material in the cage is .134" wall because it is ERW. NHRA cages are sonic tested and must be so thick because ERW is crap tubing and the side walls are inconsistent in thickness.

Find a local shop in your area, even a Stock car fab shop and have them bend it for you. It will fit better and then you can use lighter wall tubing.
cagedruss is offline  
Old 03-01-08, 12:18 PM
  #18  
Lives on the Forum
10 Year Member
 
Black91n/a's Avatar
 
Join Date: Sep 2003
Location: BC, Canada
Posts: 5,707
Likes: 0
Received 1 Like on 1 Post
There's also the Autopower and Kirk Racing bolt in cages. That might be a better option.

I'd really reccomend against a minimalist, cheap, or badly designed cage. Its your life we're talking about, and while you may be happy with only hillclimbs for the moment, that may change, and if you sell the car on, if it's got a road race legal cage then that opens it up to a much bigger market for an easier sell. Safety gear is not the place to cheap out (that's not to say just go buy the most expensive things).
Black91n/a is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
ArmAnirx7
West RX-7 Forum
13
01-21-16 02:39 PM
Robrods64
New Member RX-7 Technical
6
10-02-15 07:56 PM
NickNac113
1st Generation Specific (1979-1985)
13
10-01-15 09:25 PM


Thread Tools
Search this Thread
Quick Reply: Trying to determin if this cage meets scca req's


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: