RGS frame tube material

I

ITALOSOUND

New member
Hello
I have -83 RGS. I started exchange steering bearings and I notice that frame is broken both sides of steering tube (lower tubes, which go under engine). Does anyone knows what kind of material frame tubes are, that I can choose right welding filler material. I have a manufacturer advice (Nuova Moto Laverda, Angelo Ferrari) but this guidance plans don't inform anything about tube material.
 
cut the crack out completely useing a 1mm thick cutting disc,then weld on a big lump of gusset temporarilly to bridge the crack,reweld the 1mm gap, making sure you get 100% full penetration and a good reinforcment cap, then do the same on the other side, remove the temporary gussets lastly when everything has cooled down, and cut away slowly so as not to heat anything up,keep it as cool as you can, by going slowly, a short bit at atime.
CLEM
 
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