I recently aquired a control line plane by Sterling Models, Stearing
PT-17. The wing span is 32 1/4 ", Length 24", for .19 to .35
engine. It is a Bi-plane with a monocoupe fuselage. I'd like to
convert it to an RC plane. I thought I could just hack the upper fuse,
which I did already, tear out the control line stuff, and put the fuel
tank back in the front w/ the flight pack and servos behind it.
However, I talked to a guy that said that "a .15 to .20 would be
plenty enough engine for a conversion." He said "I might run into
problems in with the wings. Since it is a c/l kit, the wings are FLAT
and you would need dihedral to make the plane more stable. Also you
would need to add down thrust and maybe change the incidence of the
tail. When the kit was designed, installing a radio in it was out of
the question as the radios were HUGE".
Well, I've removed the covering, chopped out the top for the servos
and now I'm stuck. I don't know if I have to lengthen the tail a
couple inches, change the engine mounts, or what. I've built several
planes but never anything like this. I dont know how to post pics here
to show what it looks like but I have a bunch to email if it would
Any help is appreciated.
- posted 14 years ago