X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 08 Sep 2011 02:10:27 -0400 Message-ID: X-Original-Return-Path: Received: from qmta03.westchester.pa.mail.comcast.net ([76.96.62.32] verified) by logan.com (CommuniGate Pro SMTP 5.4.1) with ESMTP id 5116986 for lml@lancaironline.net; Wed, 07 Sep 2011 20:20:19 -0400 Received-SPF: pass receiver=logan.com; client-ip=76.96.62.32; envelope-from=jmorgan1023@comcast.net Received: from omta04.westchester.pa.mail.comcast.net ([76.96.62.35]) by qmta03.westchester.pa.mail.comcast.net with comcast id W0Bz1h0070ldTLk530Kjx9; Thu, 08 Sep 2011 00:19:43 +0000 Received: from [192.168.1.104] ([71.238.168.79]) by omta04.westchester.pa.mail.comcast.net with comcast id W0Kf1h00k1j7MyX3Q0KgwR; Thu, 08 Sep 2011 00:19:43 +0000 From: Jack Morgan Content-Type: multipart/alternative; boundary=Apple-Mail-2--20954271 Subject: Gear hand pump X-Original-Date: Wed, 7 Sep 2011 20:19:38 -0400 X-Original-Message-Id: <87337F36-538C-4706-9067-60AF2FD0212D@comcast.net> X-Original-To: Lancair List Mailing Mime-Version: 1.0 (Apple Message framework v1084) X-Mailer: Apple Mail (2.1084) --Apple-Mail-2--20954271 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii This option is available directly from Lancair. They place the = accumulator over the elevator push pull control tube on the control tube = pass through housing between the retracted main tires. This is a heavy = option. Keep in mind that if the blow down doesn't work you are out of = options for getting the gear out. The hand pump will continue to deliver = fluid until the reservoir is completely exhausted of hydraulic fluid. = The electric pump is placed such that it cannot empty the reservoir = leaving a truly redundant way to get the gear out with the hand pump. The substantial weight penalty is further aggravated by moving the CG = further aft. Suggest you think this option through carefully. I have not = compared Lancair prices with others. Jack Morgan On Sep 6, 2011, at 6:01 AM, Lancair Mailing List wrote: > From: N66mg@aol.com > Date: September 5, 2011 5:14:34 PM EDT > To: lml@lancaironline.net > Subject: Re: [LML] Re: Gear Hand Pump LIV >=20 >=20 > I would like more info on this, before ordering...Perhaps a photo with = instructions, cost and how heavy is it... > Michael > n66mg@aol.com > =20 > In a message dated 9/2/2011 4:51:57 A.M. Pacific Daylight Time, = colyncase@earthlink.net writes: > Matt, >=20 > Sounds interesting. do you have a schematic for this? I would just = want to understand the failure modes before I ordered one. >=20 > Colyn Case >=20 > On Sep 1, 2011, at 1:27 PM, Matthew Collier wrote: >=20 >> Mr. Paczkowski, >> We have installed an emergency blow down accumulator in almost all of = our customers IV's. They aren't light but are a much easier and faster = way to get the gear down. When retrofitted to a flying IV we typically = install the piston accumulator on the back of the spar box. Then we use = two stainless steel ball valves mounted between the seats to operate the = system, one on the forward spar box flange and the other on the aft. The = forward valve releases the pressure holding the gear in the up position. = The aft valve releases the fluid pressurized in the piston accumulator = to the emergency side of the shuttle valve. When the valves are shut and = the system is recharged in the down position the shuttle valve returns = to its normal position and the accumulator will recharge during the next = gear up cycle. We have had great success with this system and our = customers even practice emergency blow downs in flight since it is = completely reset each time without servicing.=20 >>=20 >> Matthew=20 >> Fibercraft Inc. >>=20 >> On Wed, Aug 31, 2011 at 4:42 AM, Nicholas Paczkowski = wrote: >> =20 >> Perhaps a dumb question (apologies in advance) but Is there a better = alternative available to the manually operated hydraulic 'gear down' = lever (such as a charged gas bottle) that would eliminate both the = awkward lever and the seemingly inevitable leaking of hydraulic fluid? = Thanks. >>=20 >=20 > =3D >=20 --Apple-Mail-2--20954271 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii

This option is available = directly from Lancair. They place the accumulator over the elevator push = pull control tube on the control tube pass through housing between the = retracted main tires. This is a heavy option. Keep in mind that if the = blow down doesn't work you are out of options for getting the gear out. = The hand pump will continue to deliver fluid until the reservoir is = completely exhausted of hydraulic fluid. The electric pump is placed = such that it cannot empty the reservoir leaving a truly redundant way to = get the gear out with the hand pump.

The substantial = weight penalty is further aggravated by moving the CG further aft. = Suggest you think this option through carefully. I have not compared = Lancair prices with others.

Jack = Morgan


On Sep 6, 2011, at 6:01 = AM, Lancair Mailing List wrote:

From: N66mg@aol.com
Date: September 5, 2011 5:14:34 PM = EDT


I would like more info on this, before = ordering...Perhaps a photo with instructions, cost and how heavy is = it...
Michael
Matt,

Sounds interesting.   do = you have a schematic for this?  I would just want to understand the = failure modes before I ordered one.

Colyn = Case

On Sep 1, 2011, at 1:27 PM, Matthew Collier = wrote:

Mr. Paczkowski,
We have installed an emergency blow = down accumulator in almost all of our customers IV's. They aren't light = but are a much easier and faster way to get the gear down. When = retrofitted to a flying IV we typically install the piston accumulator = on the back of the spar box. Then we use two stainless steel ball valves = mounted between the seats to operate the system, one on the forward spar = box flange and the other on the aft. The forward valve releases the = pressure holding the gear in the up position. The aft valve releases the = fluid pressurized in the piston accumulator to the emergency side of the = shuttle valve. When the valves are shut and the system is recharged in = the down position the shuttle valve returns to its normal position and = the accumulator will recharge during the next gear up cycle. We have had = great success with this system and our customers even practice emergency = blow downs in flight since it is completely reset each time without = servicing. 

Matthew 
Fibercraft Inc.

On Wed, Aug 31, 2011 at 4:42 AM, Nicholas = Paczkowski <
 
Perhaps a dumb question = (apologies in advance) but Is there a better alternative available to = the manually operated hydraulic 'gear down' lever (such as a charged gas = bottle) that would eliminate both the awkward lever and the seemingly = inevitable leaking of hydraulic fluid? = Thanks.


=3D



= --Apple-Mail-2--20954271--