Exo tubing size suggestions

[rockcrawler31]

Hi all

I'll be building an internal cage in the devil soon, and linking it to an exo through the roof.

The picture shows roughly what i have in mind, so any suggestions or comments would be appreciated. (sorry about the horrible paint chop )

A friend has suggested that i make the exo out of half inch solid bar since the internal cage will supply the strength and the exo is just to stop rubbing on trees and rollover panel protection. But i just can't see it being strong enough to do the job and will look crap.

I will have a 38mm die for the internal cage so i could use that, but i'd consider going to 25mm tube if it will save some weight up high. It will cost me for another die, but if it's going to save a decent amount of weight it will be worth it.j The way i see it, if i put the diagonals on the exo, i can get away with not using them on the internal - your thoughts on this?

i will probably scrap the bar that goes over the bonnet and at the back since there is already a rear roll bar. On the front i will bolt a support plate on the bottom of the A pillar to provide lateral support for the brush bars and side bars.

Do you think the secondary door is going to be a pain in the arse for any Navi? I will make it removable and latch with a slotted drop pin like the tailgates of landrovers and trailers have.

The side bar will be removeable and both the side bar and a pillar bars will have a rubber bush to isolate from the chassis

[evanstaniland]

First thing is if you plan on comping it check with the comp rules to see what rules and guidelines and see what minimum cage specs are required. im doing some cage work on mine now and using 40nb (48mm) with a 3.6mm wall thickness, and its seamless.

i thought main hoops and pillars etc was 40nb and cross bracing in 32nb

you dont want to scab just to save weight.

have a look at this website.

http://www.therangerstation.com/tech_li ... llcage.htm

are you making this removeable of solid mounted?

[rockcrawler31]

cheers mate

the internal cage is getting made as per CCDA spec with 50mm and 38mm seamless tubing.

i'm only talking about the exo here which won't need to comply, just be practical. The reason i'm talking about weight is that i will have both an internal and an exo and while i'd prefer to have only one cage that protects both me AND the car, not all comps allow an exo only. So therefore the exo (being a double redundancy in effect) needs to be as light as practical

I'll be making the external part removable, but not the kind of thing you want to remove every day. Just in case the RTA changes its rules or some highway cop wants to be a PITA, i want to be able to remove it for going over the pits.

[chunderlicious]

why not run roof/pillar bars like the winch guys do?

most do it out of 32nb if on a budget or 1 1/2 inch DOM if they have the equipment for it.

[rockcrawler31]

why not run roof/pillar bars like the winch guys do?

most do it out of 32nb if on a budget or 1 1/2 inch DOM if they have the equipment for it.

mainly because the devil is tall enough to want to lie down and go night nights. and with the SRAP enduro coming up i want to be able to push and not worry too much about scraping or flopping

i might run 32nb if it will fit the 1 1/2" die that i use for the DOM internally

[evanstaniland]

i might run 32nb if it will fit the 1 1/2" die that i use for the DOM internally

32nb is 1 1/4" so should fin in

http://www.maselmon.com/Content.aspx?ContentID=24

can you take some pics of ya rig like diagonal front on, from the rear, side on etc i just want to play with cage designs for ya


evan

[rockcrawler31]

i might run 32nb if it will fit the 1 1/2" die that i use for the DOM internally

32nb is 1 1/4" so should fin in

http://www.maselmon.com/Content.aspx?ContentID=24

can you take some pics of ya rig like diagonal front on, from the rear, side on etc i just want to play with cage designs for ya


evan

no worries. can you pm me an email address

[GUGQ]

32 nb is actually 1 3/4 inch OD

[chunderlicious]

actually it is neither;

32nb is 32nb (42.3mm ish)
1 3/4 TUBE is 44.45mm
1 1/2 iTUBE is 38mm