Ive done the conversion myself. I made my own crutch. It has an adjustable motor mount which could be used with a belt drive with a minor mod. Not only did I redesign the crutch I also made it so that the mainshaft have be a little longer. My heli is super stable as a result. Its a quick change over when I want to fly gas also I just unbolt everything and bolt it over to the other crutch. About a half hour of work and Im flying electric.