23: Motor & Propeller, Theory and Understanding
Mar 18, 2013 |
Section IV Theory & Understanding | See other
PPG Bible Additions
Choosing Gear: The Motor
Matching Prop to PPG
All About Fuel
Avgas vs Mogas
There's a lot more than meets the eye
regarding the choice of motor. Thrust, sound, strength, cage size,
shipping ability and others. Don't expect to get a straight answer from
manufacturers. Only a few really state the facts and a few blurt out
utter nonsense with a religious conviction.
Another thing that has become obvious is how pilots tend to like what
they learned on. As we cover elsewhere, before choosing your first
motor, choose an instructor and make sure they're familiar with the gear
you plan to learn on.
I've been asked about torque and twist many
times and find a tremendous amount of misinformation. Sometimes it's
given with religious fervor. It's still wrong. I've worked with other
respected pilots and aerodynamic experts to gather consensus for the PPG
Bible and we are on agreement with what's presented there.
Here are some highlights.
Alcohol in Fuel and
All about Fuel.
Here is a great video showing how a 2-stroke engine works and how a
membrane carburetor works. It's intent is to show servicing of Walbro
carbs but it's very informative.