RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)
I've a plane close to your question parameters of 10 lb so can offer a little bit of info. My Ultra Stick Light is 2 oz lighter than 10 lbs. Engine is a Zenoah G-20 W/stock muffler running an APC 16x6 at 8900-9000. It has unlimited vertical but is just into that zone. Six more oz and it wouldn't. If careful, one can do fair size vertical eights and have enough vertical speed to hold the figure well. If indeed the DLE is more powerful than the G-20 it will handle a 10 lb plane for most any aerobatics without problem.