RE: prop question
not sure what either of those are but the prop has a slot on where it slides over a metal peace to keep it from spinning freely on the shaft and there is a plastic nut that holds it on i think the prop shaftlooks more like 1/8 than 3/16 but that is by using a tape measure. hope this helps on ebay i see alot of stuff using mm would my shaft be a 3mm or 4mm