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Old 01-04-2011, 04:19 PM
ant_8u ant_8u is offline
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Frame Rust-trap

My '71 Triumph GT6 (like every other ever made) needs the chassis outriggers replacing

This part of the frame is a notorious rust trap

I think it might be down to how the outrigger is fitted to the chassis
It's a box section, with the vertical faces butt welded to the main chassis frame, and the horizontal faces overlapping the main frame

The main frame tends to rot through where the upper and lower faces overlap the chassis main frame

Is the rotting due to poor preparation under the two surfaces?

Could the overlaps be removed and all four faces be butt welded, or would this reduce strength too much?

The outriggers are located underneath the firewall, so need to have as much strength as possible

(I'll try to add a picture if possible)
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