The smallest I have is a 50cc. Everything else is 40 to 46%. The only down side is you need a trailer to haul them. Once you fly big you never go back. I use the 50cc when i can't stay at the field all day. If you want to see a lot of big planes all in one place come to Bowling Green, KY the last week-end of July. We will have planes up to 50%. Mac Hodges will be here with his B-29. You can PM me for more information or check the club web-site. Skymacrc.com. Dennis