----- Original Message -----
Sent: Monday, June 04, 2007 12:12
PM
Subject: [FlyRotary] Re: Single rotor
video
I wonder if having only one rotor if torque reversal
between firing pulse might have more of an effect at slower rpm in
loading/unloading prop blades than at higher.
Hi
Ed,
No
doubt at all that slower speed is the main problem. If I understand this
all correctly, what's needed is enough inertia to carry through the
compression stroke without slowing down significantly. At higher rpms,
the rotating mass has enough inertia to take care of the problem, but at lower
rpms, a flywheel would be needed. The weight of the flywheel would be
determined by how low you want to go in
rpm.
Adding
weight is sort of the brute force way to fix it, but it could also be fixed by
adding enough damping to absorb the speed changes. My understanding is
that I need something really soft, and even the softest damper I can get is
probably not going to work as well as I'd like it to. With any luck
though, it will be good enough to get around 2000 rpm for "idle".
BTW, to
make everyone feel better, my EC-2 is doing something I haven't been able to
explain either. I have to run with cold start on to have enough fuel to
run, which would imply that I'm only getting half the fuel I'm supposed to get
with it off. I'm sure I've goofed something up, and I haven't really
taken the time to figure it out yet, but I do have a small Holley carb on the
way to test as well :-)
Rusty