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Jeff,
I think I have the same full feathering Hartzell prop on my IV-P (HC-H3YF-2UF). The governor is a McCauley #DCF290D7X/T3. I can control the speed, but I can't feather this prop with the prop control. I was told at one time that this prop is designed for racing and it only will go to full feather if two things occur simultaneously; loss of oil pressure and RPM above 1200. Then it locks in feather and you do whatever you need to do to get on the ground. The only way to unfeather it at that point requires attaining 1200 RPM WITH oil pressure. Tough to do with the starter, the engine must start and produce oil pressure...while feathered.
These two things conditions for feathering should only occur together if you have a catastrophic loss of oil pressure with a windmilling prop (or driven). Otherwise, you would have the prop feather every time you shut the engine down.
So my question is: How did you get it to feather? Do you have a different prop governor? I called Hartzell once and they said that they did not have a recommended governor for the prop. (That seemed a little strange.)
Inquiring minds....
Barry Knotts
Lancair IV-P, N4XE
On 6/19/2011 11:30 AM, liegner@earthlink.net wrote:
I have practiced engine out glide with my full feather three blade
Hartzell prop (Model number HC-H3YF-2UF) in the full feather position
and fully stopped.
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