hello from New Zealand, 18 spline head ache a833.

AJ/FormS said
I bought a few feet of cold-rolled seamless tubing, maybe .5 inch od

I cheaped out and just cut the ends off some old rods I had; stuffed them into the ends and welded them in

hey if it works, it works.

ill have a look and see what the speedway racers use here in New Zealand i think they use similar 0.5" pipe with thoes rose joints welded into the end to give adjustment