hi morrag well i have taken it to a firm that should know what they are doing, because the insert is mild steel and the shaft is hard, he said he would weld it with dissimilar rods and i think the virago 750 is not a lot over 50 hp so i will take your word for that . thank you all the best zak
Whilst there may be some benefit from using dissimilar rods the area to be welded will be annealed anyhow during the welding process making it pretty much the same as the insert.
I've welded many Bike props to car ones and not had any problems. Did a 100bhp XS1100 to a MX5 prop with standard mild steel wire and had no problems. Even Dumping the Clutch and giving is a right handfull of throttle would not budge it.
Most important though due to the thickness of the parts and the small amount of welding involved is to preheat the parts which will help with penetration of the weld. TIG rather than Stick or MIG is preferable but not essential it's just easier to see that you've welded and that you have proper penetration
