Mailing List lml@lancaironline.net Message #45047
From: Laznicka, Garry [MCCUS] <GLaznic@MCCUS.JNJ.com>
Sender: <marv@lancaironline.net>
Subject: RE: LNC2 Hyd Chirp
Date: Tue, 27 Nov 2007 17:25:02 -0500
To: <lml@lancaironline.net>
My L-360 is not flying yet, but my gear hydraulic system has been done for just about a year and tested often with no problem, after I reversed my valve. My pressure is holding good for up to 6 to 8 hours with gears either up or down, tests in a garage.
  • At gear down selection, gears go down, pressure is at 550psi....after 8 hours, pressure is at 470psi
  • At gear up selection gears go up, pressure is at 1,150psi.... after 8 hours, pressure is at 890psi
Could some one help me with this question:
My pump does not chirp (and re-pressurized) until pressure goes down to 450psi; and this is truth for both when up or down is selected. When I have down gears selected, 450psi chirp action is great, but if up is selected, I would like to see chirp action at higher psi, perhaps 950psi.
 
Regards,
Garry Laznicka
L-360carbon
 
-----Original Message-----
From: Gary Edwards [mailto:gary21sn@hotmail.com]
Sent: Tuesday, November 06, 2007 9:18 PM
To: lml@lancaironline.net
Subject: Re: LNC2 Hyd Chirp

I feel fortunate. 
 
After reading several posts on the thread of the gear pump burping, chirping, cycling, running, leaking, not operating (Lorn's picture made me wince a bit), from other LNC2 pilots, I can report, that my hydraulic gear system operates problem free with no burps, chirps, cycling, or leaks, while in flight.  Am I in the minority?
 
I hope I haven't jinxed myself sending this post.
 
Gary Edwards
LNC2
Medford, Oregon  
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