X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sat, 15 Mar 2008 10:57:10 -0400 Message-ID: X-Original-Return-Path: Received: from mta9.adelphia.net ([68.168.78.199] verified) by logan.com (CommuniGate Pro SMTP 5.2.0) with ESMTP id 2792911 for lml@lancaironline.net; Sat, 15 Mar 2008 09:16:12 -0400 Received-SPF: pass receiver=logan.com; client-ip=68.168.78.199; envelope-from=glcasey@adelphia.net Received: from [75.82.216.175] by mta9.adelphia.net (InterMail vM.6.01.05.02 201-2131-123-102-20050715) with ESMTP id <20080315131532.KRZO8359.mta9.adelphia.net@[75.82.216.175]> for ; Sat, 15 Mar 2008 09:15:32 -0400 Mime-Version: 1.0 (Apple Message framework v753) In-Reply-To: References: Content-Type: multipart/alternative; boundary=Apple-Mail-136--353536699 X-Original-Message-Id: From: Gary Casey Subject: Re: Clean and Quick Brake Bleeding X-Original-Date: Sat, 15 Mar 2008 06:15:29 -0700 X-Original-To: "Lancair Mailing List" X-Mailer: Apple Mail (2.753) --Apple-Mail-136--353536699 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed The larger the line the harder it is to push air bubbles downhill, so I assume it has to do with the location of the high spots in the system and the volume around them. Most of the lines in the system are larger than I would think makes sense, so I tried to route the lines with as few high spots as possible. Pushing fluid from the bottom up using just gravity seemed to work fine on my system. The use of a vacuum bleeding system depends on all the seals working just as well to seal air out as to seal fluid in, and I suspect this is the case in our systems, but don't know for sure. The best thing is to do whatever works, as a firm pedal is what counts. Gary Casey > It seems to work OK, but the one time I had the local FBO bleed the > brakes they felt a little firmer. They used the tried and true two- > man approach, and were of the opinion that the bottom up bleeding > worked well on some planes but not all. They had no opinion on why > that would be. > > Paul Bricker > > N63PB --Apple-Mail-136--353536699 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=ISO-8859-1 The larger the line the harder it is to push air bubbles downhill, so I = assume it has to do with the location of the high spots in the system = and the volume around them. =A0Most of the lines in the system are = larger than I would think makes sense, so I tried to route the lines = with as few high spots as possible. =A0Pushing fluid from the bottom up = using just gravity seemed to work fine on my system. =A0The use of a = vacuum bleeding system depends on all the seals working just as well to = seal air out as to seal fluid in, and I suspect this is the case in our = systems, but don't know for sure. =A0The best thing is to do whatever = works, as a firm pedal is what counts.
Gary Casey

It seems to work OK, but the one = time I had the local FBO bleed the brakes they felt a little firmer. = They used the tried and true two-man approach, and were of the opinion = that the bottom up bleeding worked well on some planes but not all. They = had no opinion on why that would be.

=A0Paul = Bricker

N63PB

= --Apple-Mail-136--353536699--