Kaos,,The Homelite will fly planes like a nosen 1/4 Citabria,1/4 Cub with ease,also there is a kit out there made by a company named R/CGuys,that sells a kit for $99 called the TreeHopper.Also you might want to consider an Ultra Stick Lite.Now if you really wanna get serious try a Homelite 25cc in a Carl Goldberg Ultimate Biplane.One Gentleman did just that here,and posted pictures etc. in these forums,HE DID AN EXCELLENT JOB!Trying to find a plane that will hover on a 25cc Homelite is gonna be a little tough.Right now i am in the process of designing one to do that (or come close,hehe!)One other small engine you might want to consider to convert is the Homelite 33cc engine from a Ranger or Bandit chainsaw.Very easy conversion,lot simpler than the 25cc and has alot more punch,you can pick one up for around 100 bucks or so.