rollcage question

Post by **Articulator** » Mon Dec 21, 2009 7:50 pm

building rollcage on cut down patrol ute to ccda specs can anybody tell if the backstays have to be 38x2.5 or should they be 44.45x2.6 cant find any specs other than main hoop 44.45x2.6 all other components 38x2.5 are the backstays part of the main hoops cheers

Post by **351ciofgrunt** » Tue Dec 22, 2009 7:03 am

Articulator wrote:building rollcage on cut down patrol ute to ccda specs can anybody tell if the backstays have to be 38x2.5 or should they be 44.45x2.6 cant find any specs other than main hoop 44.45x2.6 all other components 38x2.5 are the backstays part of the main hoops cheers

I'm not sure on the ccda specs but what about what makes you feel safe? I built mine out of 48.3x3.2 for my own peace of mind.

Post by **tna racing** » Tue Dec 22, 2009 7:22 am

^^^ only problem with that, is it has to be built to there requirements i think

Post by **Wilba** » Tue Dec 22, 2009 9:15 am

44.45 on mine mate if thats any help it`s ccda..Cheers Billy

Post by **YB.LOW4** » Tue Dec 22, 2009 1:19 pm

tna racing wrote:^^^ only problem with that, is it has to be built to there requirements i think

yeah but their requirements are 'minimum requirements' you can go above their requirements just no less then their requirements.

Post by **nastytroll** » Tue Dec 22, 2009 5:20 pm

351ciofgrunt wrote:
Articulator wrote:building rollcage on cut down patrol ute to ccda specs can anybody tell if the backstays have to be 38x2.5 or should they be 44.45x2.6 cant find any specs other than main hoop 44.45x2.6 all other components 38x2.5 are the backstays part of the main hoops cheers
I'm not sure on the ccda specs but what about what makes you feel safe? I built mine out of 48.3x3.2 for my own peace of mind.

Last I checked 48.3x3.2 CDS was cheaper to purchase also (40nb pipe). 44.45 is 1 3/4" tube, an imperial size not normally stocked by steal merchants.

Post by **ludacris** » Tue Dec 22, 2009 7:28 pm

I have built all of my GU roll cages out of 48.3 seamless. Plenty strong and there is heaps of head room. I would contact your local steel merchants and find out what is available and also what size dye's you have to work with.

Cris

Post by **bigcam** » Tue Dec 22, 2009 9:24 pm

back stays must be minimum 44.5 x 2.6 CDW 350 mpa
have a look at the master drawing on the ccda website. (although it does contradict the rules on a few points which isnt helpull!

Post by **85lux** » Wed Dec 23, 2009 6:54 am

the 48.3 mentioned is not tube, ccda calls for tube to their specs. the 48.3 is 1.5"NB pipe. it has a seam and allthough it is a larger diameter and is available in a thicker wall thickness than the CCDA tube, it does not meet their specs. The seamless tube that CCDA call upon is a reliable and predictable structural member in the eyes of an engineer. i have seen some horible quality pipe that has come from china. where(to my knowlege) all the tube that comes in to australia in ccda sizes is from USA. GO THE TUBE

Post by **ludacris** » Wed Dec 23, 2009 5:22 pm

85lux wrote:the 48.3 mentioned is not tube, ccda calls for tube to their specs. the 48.3 is 1.5"NB pipe. it has a seam and allthough it is a larger diameter and is available in a thicker wall thickness than the CCDA tube, it does not meet their specs. The seamless tube that CCDA call upon is a reliable and predictable structural member in the eyes of an engineer. i have seen some horible quality pipe that has come from china. where(to my knowlege) all the tube that comes in to australia in ccda sizes is from USA. GO THE TUBE

Sorry but you are wrong. The 48.3 tube/ pipe that I use and others is seamless and it does not have a seam in it. And I believe it comes from France. I will get some and take a photo of it if you like.

Cris

Post by **nastytroll** » Wed Dec 23, 2009 5:39 pm

85lux wrote:the 48.3 mentioned is not tube, ccda calls for tube to their specs. the 48.3 is 1.5"NB pipe. it has a seam and allthough it is a larger diameter and is available in a thicker wall thickness than the CCDA tube, it does not meet their specs. The seamless tube that CCDA call upon is a reliable and predictable structural member in the eyes of an engineer. i have seen some horible quality pipe that has come from china. where(to my knowlege) all the tube that comes in to australia in ccda sizes is from USA. GO THE TUBE

Cold Drawn Seamless. CDS pipe comes in the same sizes as normal ERW and CDW as it is pipe. 44.45 is 1 3/4 Outside Dia TUBE.

Tube is measured outside and pipe is a nominal bore size ( hence 40nb).

Post by **85lux** » Thu Dec 24, 2009 2:17 am

ludacris wrote:
85lux wrote:the 48.3 mentioned is not tube, ccda calls for tube to their specs. the 48.3 is 1.5"NB pipe. it has a seam and allthough it is a larger diameter and is available in a thicker wall thickness than the CCDA tube, it does not meet their specs. The seamless tube that CCDA call upon is a reliable and predictable structural member in the eyes of an engineer. i have seen some horible quality pipe that has come from china. where(to my knowlege) all the tube that comes in to australia in ccda sizes is from USA. GO THE TUBE
Sorry but you are wrong. The 48.3 tube/ pipe that I use and others is seamless and it does not have a seam in it. And I believe it comes from France. I will get some and take a photo of it if you like.

Cris

i don´t need photos as proof. the point i make is that CCDA call for 44.5 x 2.6 tube. I expect if you can get a seamless pipe of greater than 44.5x2.6 with a yield strength of greater than 350Mpa, you would be fine.
be carefull making a cage yourself out of seamless pipe, a CCDA scrutineer may not be satisfied simply taking your word for the fact that it is seamless, as on the outside, it appears exactly the same as biunnings bought water pipe. it might be worth making a phone call to a scrutineer first to confirm that they will be happy with your choice of material.
happy fabbing

Post by **ludacris** » Thu Dec 24, 2009 1:33 pm

85lux wrote:
ludacris wrote:
85lux wrote:the 48.3 mentioned is not tube, ccda calls for tube to their specs. the 48.3 is 1.5"NB pipe. it has a seam and allthough it is a larger diameter and is available in a thicker wall thickness than the CCDA tube, it does not meet their specs. The seamless tube that CCDA call upon is a reliable and predictable structural member in the eyes of an engineer. i have seen some horible quality pipe that has come from china. where(to my knowlege) all the tube that comes in to australia in ccda sizes is from USA. GO THE TUBE
Sorry but you are wrong. The 48.3 tube/ pipe that I use and others is seamless and it does not have a seam in it. And I believe it comes from France. I will get some and take a photo of it if you like.

Cris

i don´t need photos as proof. the point i make is that CCDA call for 44.5 x 2.6 tube. I expect if you can get a seamless pipe of greater than 44.5x2.6 with a yield strength of greater than 350Mpa, you would be fine.
be carefull making a cage yourself out of seamless pipe, a CCDA scrutineer may not be satisfied simply taking your word for the fact that it is seamless, as on the outside, it appears exactly the same as biunnings bought water pipe. it might be worth making a phone call to a scrutineer first to confirm that they will be happy with your choice of material.
happy fabbing

Yes phone calls have been made (no problems) and no it does not come from bunnings.

It is stronger than the 44.5 x 2.6 and it is high quility pipe and it is readily available from this side of town. Like said some of us like to over engineer our cages even if it is more weight.

Cris

Post by **ludacris** » Thu Dec 24, 2009 1:47 pm

http://www.ccda4wd.com.au/images/Rollov ... 060428.pdf

This will help.

Cris

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