Ground speed control

I floated this as a idea a while ago. I've done it every flight since and I'
m ready to advocate it. It may not work with every engine but it works great
with our O-320 H2AD.

For taxi, I set RPM to 1000 and lean to maximum RPM. Thereafter, I control
engine speed with the mixture instead of the throttle. I can get RPM down to
about as low as full idle and, if I should need to shut down quickly, my
hand will already be on the mixture control. The small turns of the vernier
(it probably won't work without one) are easier than shoving the throttle in
and out.

The main reason for doing it is to be super lean with this easy to foul
engine. Closing the throttle restricts air as well as fuel. Reducing fuel
flow only keeps plenty of excess air flowing through the cylinders to
promote burning off any deposits.

The engine runs perfectly smooth at the low power setting.

--
Roger Long

The engine runs perfectly smooth at the low power setting.

Can you get the autogas STC for this engine, Roger?

That will solve all of your fouling problems, *and* save you $8 to $10 per
hour.
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"

I don't thing so. We would have to change airports as well since we are at
a tightly controlled Class C.