Hi, The Ring Jr has seen a lot of different power plants used by many different modelers through the years.
My first Ring Jr was built when they first came out(1954??). I powered it with a Cub .099; it flew every thing
I could do then, insides, outsides, horizontal, vertical and overhead eights and wingovers. I don't remember
the line sizes, probably 42' X .008"s. In the late 1980s I built another one from a kit and remembering that
It flew really well with a Cub .099(power equal to a good Cox reed valve .049) I powered it with an AM 1.0cc
diesel. It could easily fly a stunt pattern, first on 1/2A Combat lines(35' X .012"). then later on, I went to
44' X .008" stranded lines. I built three more Jrs, one with an extended wing giving 260sq"s and two very
modified for the Paw .08cc(.049cu") plain bearing and single bearing engines. The last Ring Jr weighs only
7.2ozs with engine, 1/2oz fuel tank and Cox grey 6 X 4 prop. This last one flys the pattern very well and turns
very sharp corners. It also performs overhead maneuvers very well.
I've been sidetracked from building another Ring Jr, but with the Paw .80 cc or Paw 1.0cc diesels, I would boost
the wing area to 240sq"s. I don't think my models are real Ring jrs anymore, but I did keep the wing construction,
wing area and tail moments the same as the original design. I'll post some pics later, whenever I figure out how to
do it.
Tony