A-ARM 2x3TUBECHASSIS HELP

Old 02-08-2012, 04:56 AM
  #11  
coolracing
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Do you have a 2x3 rear crossmember or is it round tube?
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Old 02-08-2012, 09:42 AM
  #12  
injectedrat68
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yes its a 2x3 cross member. the cm tubing comes off that. I will post pic tonight hopefully.
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Old 02-08-2012, 09:48 AM
  #13  
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so basically all you wanna do is extend a straight 2x3 rail from that stub all the way back to your 2x3 crossmember if i am reading ya rite correct?
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Old 02-08-2012, 05:57 PM
  #14  
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That's the way I'm reading it also.
First thing is to get the car set up on jack stands at the exact ride height and attitude that ya want. Then bring in that front stub and get it set up with the exact wheel base. From there you can see where ya need to go as far as extending the front frame rails to that rear cross member.
NOTE ; Spend a TON of time in measuring, moving, measuring, measuring, measuring. And MAKE NOTES !
I like to drop a plumb bob off off the chassis at equal points(swing arm pivots points are good) mark them on the floor on duct tape, and square every thing up off them. REMEMBER that if you move the car even a skoshe ya gotta drop those plumb lines again ! There is absolutely no way you're gonna get the car exactly back in the previous position.


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Old 02-08-2012, 06:35 PM
  #15  
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x2 with double D! Two plum lines and I myself like the string method rite down the center of the car, and everything you do is measured off the string!
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Old 02-09-2012, 05:33 AM
  #16  
injectedrat68
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Thanks, Thats what i was thinking.I wanted to be sure i was going down the right track befor i start cutting. I will get some pic up, i got slamed with paper work last night.
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Old 02-09-2012, 10:00 AM
  #17  
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Pictures uploaded for injectedrat68

Zip.



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Old 02-09-2012, 05:19 PM
  #18  
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Yeah, this is a pretty straight forward project. You're going to need to tie in the front down legs on the clip, into the front of the roll cage structure. Remember to incorporate TRIANGULATION in ALL of the roll cage.
Looks like FUN !!

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Old 02-10-2012, 02:15 AM
  #19  
injectedrat68
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Whats the rule on 2x3 when you add on. You have to plate it and over lap by how much i would think on all 4 sides. Any special way i should notch the 2x3 to butt togeather, or just butt them togeather flush. That doesnt look right by putting togeather flush.
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Old 02-10-2012, 03:31 PM
  #20  
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Originally Posted by injectedrat68
Whats the rule on 2x3 when you add on. You have to plate it and over lap by how much i would think on all 4 sides. Any special way i should notch the 2x3 to butt togeather, or just butt them togeather flush. That doesnt look right by putting togeather flush.
I have butt welded 2X3 frame rails but i welded a 2"X4"X1/4" tk plate on each side of the butt welded section.

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