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Message
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
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