RE: 26cc engine, what airframe?
regretably I think the 50cc suggestions are accurate..however its just a matter of time until new lighter airframes appear on the market.its still about market demand and 101 economics.but I will say this ...the 30cc dle is perfect for 25 percent airframes/I love love love 3dhobby planes.get a 70 inch slick or a 72 inch extra..pilot has the sbach and a 30cc motor ,light airframe good 3d.
but its true right now the 50cc class has many more choices .I personally feel the 50cc and under is where the direction is gas wise.I had the big 3w's but it gets to be a hassle transporting and setting up etc.whereas the smaller engines propely matched give equally great performance and much easier for me at least to manage.
those 26 cc motors incidentally are great forwarbirds and sport planes in general.other than my satios I sold off all my 2 stroke engines..