Introduction from a New Owner!

[Greig Smith]

The '28 SWB chassis we used for our supercharged single seater had been bodged a bit with lots of additional holes, numerous cracks and an unhappy steering box mounting area. Plus both rails were banana shaped

I drilled the holes oversize to get clean edges, ran a cutting disc through all the cracks to open them up & get clean edges, then liberally slathered the inside of the chassis rail in Wurth's Zinc Rich Weld Thru primer before fitting a length of 38x38mm square tube under the chassis, clamped it into place with multiple clamps, This straightened everything up nicely. When I was satisfied that the chassis was no longer a banana in any direction, I then tack welded the tube to the underside of the chassis at 1 inch intervals plus plug welded all the holes and cracks to the top or sides of the tube as required. As this was to be an off-set engine in a single seater, the tube over the old engine mount holes didn't matter, but if I was doing this on a road car, I'd cut the bottom of the tube away so as to make an inverted U shape & weld that into the underside of the chassis.

Aye
Greig