One of my buddies asked me the other day to help him build a rock crawler during our christmas break from college. ok i took it. ive figured everything else out but the roll cage he wants. i have no clue how to do a roll cage and what sized tubing i should use. any input would be much appreciated
Reply:i've never built a roll cage, but i would start with 2x .125 dom.you could do it with less if you had more of it, you could do it with more and less of it.no small job to tackle, and takes a lot of thought to protect the driver from hits in every conceivable direction. his life is in your hands, dude.bosses stuff:trailblazer 325maxstar 200my stuff:sa 200fronius transpocket 180100 amp Lincoln w/f97 f350 DITKevin
Reply:1-5/8" d.o.m. at the very least.Eventual master of the obvious, practitioner of "stream of consciousness fabrication". P.S. I edit almost every post because because I'm posting from my phone and my fingers sometimes move faster than my brain.
Reply:Is this gonna be a cage in an existing vehicle, CJ, EB, Sammy, etc., or a full tube chassis? The reason I ask is if this is gonna be just a roll cage for a existing vehicle do you have a bender? If so what size dies? If not a lot of times for just one cage it's easier on the wallet to but a prebent cage and install/weld it yourself.
Reply:Originally Posted by 92dlxmani've never built a roll cage, but i would start with 2x .125 dom.you could do it with less if you had more of it, you could do it with more and less of it.no small job to tackle, and takes a lot of thought to protect the driver from hits in every conceivable direction. his life is in your hands, dude.
Reply:You saying "as for bending IF any needs done..." tells me you are not ready to tackle a roll cage. nothing personal, not trying to hurt your feelings. A roll cage requires a ton of tube bending with a high quality tube bender.IAMAW Local 330Airco 300 AC/DC HeliwelderAirco Dip-Pak 200 with Profax spool gunPowr-Kraft AC225Everlast PowerArc 200stBuffalo Forge No.21 drill pressSpeedglas 9100xxAirco, Oxweld, Purox, Victor torchesLincoln Ranger 8
Reply:Originally Posted by wnywelderYou saying "as for bending IF any needs done..." tells me you are not ready to tackle a roll cage. nothing personal, not trying to hurt your feelings. A roll cage requires a ton of tube bending with a high quality tube bender.
Reply:This might be a good read for you on this topic, even though it may not be all inclusive of what you need to know on the subject.http://weldingweb.com/vbb/showthread.php...-Cages-Chassis
Reply:You must move from side to side to avoid turning the frame into a pretzel, I learned the hard way years ago. I haven't done one in years. I used the templates in the nascar rule book because that is what I was doing. The nhra rules are good as well, it depends on the application. They are a lot of work and require you to be a pretzel at times. Good luck.Dave
Reply:Even if you don't end up using a weld in cage kit, it's probably worth checking out the bends they went with and the install instructions etc. Check this out for a start - http://dandcextreme.com/product/d-an...roll-cage-kit/
Reply:Originally Posted by BistineauThis might be a good read for you on this topic, even though it may not be all inclusive of what you need to know on the subject.http://weldingweb.com/vbb/showthread.php...-Cages-Chassis
Reply:Good idea, they have had MANY years of trial and development work to know what works and what don't to make a safe cage. No need for you to relearn what they already know. Just go with what has already been proven to work and y'all should be a lot better off. I'm pretty sure you will end up riding in this thing at some point, so that alone should be enough incentive to want to make sure it is right when you're finished with it.
Reply:Originally Posted by BistineauGood idea, they have had MANY years of trial and development work to know what works and what don't to make a safe cage. No need for you to relearn what they already know. Just go with what has already been proven to work and y'all should be a lot better off. I'm pretty sure you will end up riding in this thing at some point, so that alone should be enough incentive to want to make sure it is right when you're finished with it.
Reply:Just think of it this way, you are signing a check with somebody's life on your welds. I was an "apprentice" building SCCA and NASA cages in Spec E46 and Pro3 racecars for about 6 months. One of the SpecE46 cars barrel rolled and the car was crushed and wrapped around the cage like a pop can. The cage did not fail though. That was a real eye opener that I was "signing a check with somebody's life on my welds". I was not ready for it at that time, so I went back into production welding.RGL Motorsports #129RL Ironworks - Random side stuff....
Reply:Originally Posted by BistineauGood idea, they have had MANY years of trial and development work to know what works and what don't to make a safe cage. No need for you to relearn what they already know. Just go with what has already been proven to work and y'all should be a lot better off. I'm pretty sure you will end up riding in this thing at some point, so that alone should be enough incentive to want to make sure it is right when you're finished with it.
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