Originally Posted by GallopingGhostler
Interesting info, Tony, great stuff. My Ringmaster Jr. with OS .15FP-S is 200 sq. in. of area. What you just told me is that if the Ring Jr. was built light enough, a Tee Dee or Norvel could haul it no sweat.
The OS engine is too heavy for it, have added ballast to the tail so CG falls were it should. It is a pig of plane because it is built from Sterling kit wood, which was heavy to begin with. The OS is a bit overpowering for it. I do 4 second laps on 58 feet lines. It doesn't stunt well at all due to weight.
Hi George, I built a succession of Ring Jrs, I built a Ring Jr back in 1954(1955?) and powered it with a Cub .099. It flew
very well back then, preforming horizontal, vertical and overhead eights. I did some maneuvers that were supposed to be
square loops but really weren't. The Cub .099 had about the same power as a strong Cox reed valve .049.
So I started a new series of Ring Jrs about 15 years ago building a Jr from a kit and powering it with an AM 1.0 cc
diesel engine. that model did every maneuver in the pattern. I built a few longer span larger area Jrs, powered
with PAW and Taifun .09 diesels. They flew just like the AM 1.0cc version. Then I optimized the Jr design for
the PAW 080cc(.049cu") series. using a much shorter nose moment, same tail moment with reduced area fin
and stab/elevator. These models weighed 6.8-7.2ozs with prop, ready to fly. This latest version flew the best,
also flew a bit faster, It retained the Jr's 195sq" wing area, I flew the last versions on 44' x .008" stranded lines.
The only modification that I would make to the design would bump the wing area up to 225 or 230 sq"s.
I've got photos of the last Ring Jr; I'll try to attach them. Hmm, this pic post isn't exactly what I intended.
If you wanna see more photos, send me an email.
Oh, George, just checked, and I see that you've already seen photos of my last Ringmaster Jr. I'll see you later...