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Old November 2nd 05, 04:28 PM
Bill Zaleski
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Default Turn co-ordinator

Yup. Right to the ground from 10K' bout 800FPM

Bill Z. A&P I.A.

On Wed, 02 Nov 2005 07:46:24 -0800, Mark Hansen
wrote:

On 11/1/2005 17:43, Bill Zaleski wrote:

I never said that you will get "green line "vacuum. I did say that
the gyro's will continue to work with the vacuum that you will have
with a windmilling engine. Go to 10K, windmill, and see that you still
have useable gyro's. Been there, done that, they still work.


How long did you windmill? After all, the gyros are going to
continue to spin for some time with no vacuum. The slower they go,
the more difficulty they're going to have.

Did you go for more than 5 or 10 minutes and verify that they were
still working acceptably?




On Tue, 01 Nov 2005 11:48:38 GMT, Jon Kraus
wrote:

You think wrong Bill. At least on my Mooney at idle doesn't come close
to the vacuum gauge reading in the green. This is with a new dry pump
too. I still doubt that a windmilling engine will keep the gyros spooled
up enough to run the AI and DG. Just my .02. YMMV

Jon Kraus
'79 Mooney 201
4443H @ TYQ

Bill Zaleski wrote:


You think wrong, Jon. Even at idle, most vacuum pumps produce enough
differential to keep rotors spinning satisfactorily.