X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 02 Sep 2011 07:51:44 -0400 Message-ID: X-Original-Return-Path: Received: from elasmtp-kukur.atl.sa.earthlink.net ([209.86.89.65] verified) by logan.com (CommuniGate Pro SMTP 5.4.1) with ESMTP id 5111065 for lml@lancaironline.net; Thu, 01 Sep 2011 20:02:46 -0400 Received-SPF: none receiver=logan.com; client-ip=209.86.89.65; envelope-from=colyncase@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=e1pgG3xrKxpBEV7qW4RL1YZTkYDbp2DdRzriLAwtVQxdD1YKGorXoemPlZt9z0Ei; h=Received:Subject:Mime-Version:Content-Type:From:In-Reply-To:Date:Cc:Message-Id:References:To:X-Mailer:X-ELNK-Trace:X-Originating-IP; Received: from [70.20.32.175] (helo=[192.168.1.24]) by elasmtp-kukur.atl.sa.earthlink.net with esmtpa (Exim 4.67) (envelope-from ) id 1QzHD0-0002QE-61; Thu, 01 Sep 2011 20:02:10 -0400 Subject: Re: [LML] Re: Gear Hand Pump LIV Mime-Version: 1.0 (Apple Message framework v1084) Content-Type: multipart/alternative; boundary=Apple-Mail-239--540402753 From: Colyn Case In-Reply-To: X-Original-Date: Thu, 1 Sep 2011 20:02:09 -0400 X-Original-Cc: Matthew Collier Collier X-Original-Message-Id: References: X-Original-To: "Lancair Mailing List" X-Mailer: Apple Mail (2.1084) X-ELNK-Trace: 63d5d3452847f8b1d6dd28457998182d7e972de0d01da940ba439b5965d100bdf6c76469973087be350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 70.20.32.175 --Apple-Mail-239--540402753 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii 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.=20 >=20 > Matthew=20 > Fibercraft Inc. >=20 > On Wed, Aug 31, 2011 at 4:42 AM, Nicholas Paczkowski = wrote: > =20 >=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 --Apple-Mail-239--540402753 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii
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 <npaczkowski@telus.net>= wrote:

 

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.



= --Apple-Mail-239--540402753--