RE: muffler cleaning? and Biplane trainer?
When it's a trainer I'd rather go with an ARF. I can build my favorite biplane later but for now if I should crack her up I haven't put all that work into her like building one from a kit. I would like one to take say around a .61 to .90 four stroke with a wing span around 50" inches or less. I only have so much room in my vehical. There are some good ideas here worth looking into....thanks guys!
Guess I'll leave the gunk on the muffler....LOL!