okay, so I'm working on a prototype for a hover bike. The end design will have a 600cc engine and hopefully impressive stats. Currently I'm working with a 49.5cc moped engine. The skirt design is pretty straigt forward as is the thrust and steering. I'm having some trouble determining what type of fan I can use and how big of a fan I will need. I'm hoping to use a fan similar to a floor blower. I don't know the name of this type of fan but I'm going to call it a "scoop fan" until someone corrects me. The idea is to use a single fan to create lift and thrust. The "scoop fan" will be mounted in the rear like the back tire of a motorcycle. This will then be boxed in and vented to direct air flow through two openings, one down into the skirt and frame to create lift and the other out of the rear of the craft for propulsion and steering. (I realize this may not be enough power to accomplish both and that's something I'm willing to work with in a later design. Currently I'm concerned with lift and stability.) Any comments or suggestions are welcome. Especially if you know where I can find fan blades that fit the description above. (Not something I'd like to have to fabricate) Thanks all.