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Date: Fri, 01 Apr 2011 10:34:39 -0400
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From: Lorn H Olsen <lorn@dynacomm.us>
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Subject: Re: LNC2 Gear Hydraulics
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Keith,

Buy Wolfgang's LNC2 Gear Fixer. It weighs about 2 oz and takes less that =
10 minutes to install. Your gear will always go up when it should and =
down when it should. No more line bleeding.

The Fixer senses when both the high and low pressure switches are on and =
runs the pump in the appropriate direction. The pump running relieves =
the pressure on the proper side (high or low).

If you have any questions, feel free to call.

Every once in a while, the gear will also not come down. This occurs =
after a long high altitude flight in cold air and then a descent to =
warmer air. This problem is easy to fix, if you remember, by opening and =
immediately closing the dump valve. I forgot one time and landed gear =
up. The Fixer would have saved my bacon.

I have also noted a 50=B0F temperature change happens to be the magic =
number for when the pressure in both switches is high enough to lock the =
system.

Lorn

> From: Keith Smith <keith.smith@gmail.com>
> Date: March 31, 2011 3:24:59 PM EDT
>=20
> Quite possibly one of the best posts I've ever read.  Thanks, Tom, for =
taking the time so share those experiences!
>=20
> I recently experienced the inability to raise the gear. A quick call =
to Rick Argente (Lancair owner/builder in NJ) provided the =
solution...bleed the line. He said it's a common issue when flying from =
cold locations (NJ) to warmer destinations (Georgia).
>=20
> I also get hear the pump activate in flight for a fraction of a second =
every 20-30 minutes or so, which I suspect points to a leak of some =
sort.
>=20
> Keith Smith
> N360JH

--
Lorn H. 'Feathers' Olsen, MAA, ASMEL, ASES, Comm, Inst
DynaComm, Corp., 248-345-0500, mailto:lorn@dynacomm.us
LNC2, FB90/92, O-320-D1F, 1,790 hrs, N31161, Y47, SE Michigan