Mailing List lml@lancaironline.net Message #33802
From: <Sky2high@aol.com>
Sender: <marv@lancaironline.net>
Subject: Re: [LML] LNC2 Nose Gear Gas Spring
Date: Tue, 10 Jan 2006 00:20:30 -0500
To: <lml@lancaironline.net>
In a message dated 1/8/2006 10:12:21 P.M. Central Standard Time, naf@britevalley.com writes:
Well, I managed to lose my email archives, so need to ask for the McMaster-Carr part number of the nose gear extension gas spring.
Why not Aero-Crafters (Lancair) GM028?
I noticed on my last flight about 3 weeks ago (lousy weather since), that my alternate extension was a bit sluggish.  Today, it cleared off enough for me to slip the surly bonds.  On landing, the nose gear light failed to come on, so I used the alternate extension to no avail.  No amount of pulling g's, slowing, porpoising, etc. helped, so I decided to land.  I shut the engine off on short final.  Unfortunately, the nose gear collapsed on landing.  The only damage is the prop and the cowling, so I feel pretty fortunate.  I was surprised that the landing itself was almost a non-event.
Naf,
 
Although the gas spring assists in locking the over-center link, its' purpose is to get the gear out in case of a failure in the hydraulic system.  If the hydraulic system and nose gear actuator are working properly, the gear should have been down and locked even if the gas spring had no energy.  I will be interested to hear what part of the nose gear failed - Actuator wheel well attachment delaminated?  Actuator rod bent? No fluid and weak spring? Etc. ............
 
Scott Krueger AKA Grayhawk
Lancair N92EX IO320 SB 89/96
Aurora, IL (KARR)
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