Hello everyone, I myself do not know a great deal about motorcycles but my neighbour has bought himself an Ariel Motorcycle from ages past, and it has a light on it that needs carbide to power it. Although he is very much an expert on most things bikey, he doesn't know what type of carbide powder to get for the light. This is where you good people come in. Would any of you know what type of Carbide powder he should buy and where he would get it?. Any help would be gratefully received.