Prop seals leak because people use the blades as tow-bars on
the ground. Front crankcase seals leak because of blocked
case vents.

In-flight, centrifugal forces make the pressure on the seals
at right angles, does not cause leaks.


"Ash Wyllie" wrote in message
...
| BT opined
|
| the oil will "streak" in the slip stream
| changing power prop settings "even to fine" will cause
the seals in the prop
| hub to flex, why move them more than you have too.
|
| Because the governor is constantly changing the blade
angle, and thus
| aggravating the leak. Going to fine pitch means that the
blades will move
| only once more for the rest of the flight.
|
|
|
| -ash
| Cthulhu in 2007!
| Why wait for nature?
|
|