arched tube atv swingarm

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First pics are of forms used to hand bend tube, and tube. Tube used was 3/4, 1/2, and 3/8 inch  4130 .058 wall mil spec. I turned tube in lathe and used sanding screen to remove mill scale. 1/16 gold tung, 1/16 80sd2 filller, syncrowave set on 150 and used foot feeder for required amps.Not as steady as I was when younger, and could see better. Still my best was not nearly as good as a few here.Banshee + 16, or ctc= 35 inch.last pic shows new al drag race axle and brg carrier to be usedPeter Attached Images
Reply:one more Attached Images
Reply:Wow - nice work. Is the rear axle eccentrically mounted for chain adjustment, or just massive bearings?
Reply:Originally Posted by AngusdogWow - nice work. Is the rear axle eccentrically mounted for chain adjustment, or just massive bearings?
Reply:Looks Awesome Peter!!Good Job.http://all-a-cart.comWelding Cart Kits and accessories
Reply:Originally Posted by ZTFabLooks Awesome Peter!!Good Job.
Reply:That doesn't sound gay at all..... Originally Posted by castweldThanks, but I still envy your rhythm and steady hand!Peter
Reply:Originally Posted by thordehrThat doesn't sound gay at all.....
Reply:This is for some custom decorative ATV I take it?
Reply:Originally Posted by thordehrThat doesn't sound gay at all.....
Reply:Originally Posted by makoman1860This is for some custom decorative ATV I take it?
Reply:Beautiful work though.  Hoping I can fabricate like that at some point.
Reply:look up hyabusa banshee, you'll see what they're doin with these +16's lol. nice work."...My pappy was a pistol I'm a son of a gun...""...God is great, beer is good, and people are crazy..."
Reply:Originally Posted by thordehrBeautiful work though.  Hoping I can fabricate like that at some point.
Reply:Looks good from here..You get all the fun jobs......zap!I am not completely insane..Some parts are missing Professional Driver on a closed course....Do not attempt.Just because I'm a  dumbass don't mean that you can be too.So DON'T try any of this **** l do at home.
Reply:Originally Posted by zapsterLooks good from here..You get all the fun jobs......zap!
Reply:I'm very curious about your bending technique...--did you fill & tamp sand in tubes to prevent kinking?--did you use a cheater bar / tube to help during the bend?--any other hints for us wannabee tubing benders?Thx, zip.
Reply:Very nice work for sure, very even bends and of course nice beads as always.  Im curious as to why there are no cross members tying the two sides together along the length of the swing arm.  It appears the axle, housing and bearings and the pivot axles and bearings are really the only things resisting twisting force on the swingarm.  Those 2 arches down the middle don't add any resistance to twisting force on the swing arm from the axle being pushed up on one side and down on the other on un-even terrain.  I would think some horizontal cross braces top and bottom are in order, and maybe some x-bracing in the vertical plane as well, one set at each end near the pivots and a set or two somewhere in the middle.Last edited by DesertRider33; 09-05-2010 at 12:31 PM.MM350P/Python/Q300MM175/Q300DialarcHFHTP MIG200PowCon300SMHypertherm380ThermalArc185Purox oaF350CrewCab4x4LoadNGo utilitybedBobcat250XMT304/Optima/SpoolmaticSuitcase12RC/Q300Suitcase8RC/Q400Passport/Q300Smith op
Reply:Originally Posted by zipzitI'm very curious about your bending technique...--did you fill & tamp sand in tubes to prevent kinking?--did you use a cheater bar / tube to help during the bend?--any other hints for us wannabee tubing benders?Thx, zip.
Reply:Looks great to me too Peter!I didn't see a welding jig, do you have to bore the bearing clamps or just polish and it's good to go? If your sticking all that together freehand that's really strong fabbing.Matt
Reply:Originally Posted by Matt_MaguireLooks great to me too Peter!I didn't see a welding jig, do you have to bore the bearing clamps or just polish and it's good to go? If your sticking all that together freehand that's really strong fabbing.Matt