Morgans wrote:
"Ron Wanttaja" wrote in message
...

Saw one at Oshkosh, in the Ultralight area, about 1988. Was called the
"RB-1",
and for a "band" had some stuff that was originally used on high-tension
lines
for insulation or some such. Heard it had flown successfully, a distance
of
about 300 feet.

Got a picture of it, somewhere...

Do you recall if it had some kind of gearing between the engine and the
prop? I would think you would need to turn some of the torque into higher
RPM to turn the prop, to maximize run time. Just a guess.
--

You could also launch with a bungee and then sustain with the prop.

--

FF