My RC helicopter with it's LiPoly battery is a big disappointment.
Only a 7 minutes run time.
I remember Cox airplanes from my childhood and went to their site.
I recall their fuel powered planes that used a battery to start them.
Run times where quite a bit longer.
All they now sell is the battery powered planes.
What a bummer.
i suspect there are many places to buy hot-fuel powered planes
i still have several U-Control planes and kits from back in the day - lol
some little ones that use .049 engines
and several larger ones - with a couple .19's, a .25, and a .39 engine
also - someplace, i have an old McCoy .49 redhead that dad used when he was in college
one of the schools he went to was Embry-Riddle university in Tulsa
they had to make flying models for one of the classes