RS1,2and 3 to BR12

[HandyAndy]

Originally Posted by brainbug007

This bit is well annoying! I've gone to fit the rs1-3 section and realised the "open" end of the assembly has ended up nearly 10mm over the 421mm it should be from inside wall to inside wall The bottom end measures up fine and the corners are 90 degrees as they should be so I guess the metal has warped at bit on me during tack welding? Should I 1) just put it on as is and adjust the measurement from the center line, 2) try and knock it with a hammer into the right size, 3) chuck it in the scrap pile and try again?

It does indeed seem that it has warped,

so I,d suggest not to do your suggestion number 1.......won,t be easy to get the centerline on chassis to the RS1 & RS2 whilst trying to keep it all in place at same time.....(only 1 pair of hands etc )

Option 2 is a possible ....

Option 3 ...... not needed

My suggestion would be to tack in a cross brace between RS1 & RS2 to keep it at the correct measurement, tack weld the assembley into postion then remove the cross brace & then do a full check on measurements from the chassis centerline,

use a similar process with the upper part of the assembley too ....basically, as you are welding some 45degree corners together its easy for the weld distortion to "PULL" outwards which has created this situation for you.

Hope that helps.

cheers
andy