X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 16 Jun 2010 12:16:46 -0400 Message-ID: X-Original-Return-Path: Received: from smtp126.sbc.mail.sp1.yahoo.com ([69.147.65.185] verified) by logan.com (CommuniGate Pro SMTP 5.3.7) with SMTP id 4350108 for lml@lancaironline.net; Wed, 16 Jun 2010 12:10:01 -0400 Received-SPF: none receiver=logan.com; client-ip=69.147.65.185; envelope-from=rjones2000@sbcglobal.net Received: (qmail 65718 invoked from network); 16 Jun 2010 16:09:24 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=sbcglobal.net; h=Received:X-Yahoo-SMTP:X-YMail-OSG:X-Yahoo-Newman-Property:From:To:References:In-Reply-To:Subject:Date:Message-ID:MIME-Version:Content-Type:X-Mailer:Thread-Index:Content-Language; b=Pc8L+ZYL+qYsZeJklU1V2nr9ZG1z8rJRxYsrJa3fAvqhUAVpn3q5s/07VHpCk9dlx5R45DbcOwPm8Ov+pffuDdxKYojakGr+X/PPH56tf4C/0wbEcIZgyFHfi4D1RPseHpcu8TkjIHHt0pCMuDdMEPNmeY88M3RS9hz8/1gh9G8= ; Received: from ppp-71-136-36-110.dsl.sndg02.pacbell.net (rjones2000@71.136.36.110 with login) by smtp126.sbc.mail.sp1.yahoo.com with SMTP; 16 Jun 2010 09:09:24 -0700 PDT X-Yahoo-SMTP: qom3qKeswBCS7l.XERKRbiNwk_aq93o2mA-- X-YMail-OSG: qbICnrcVM1l5QyrYv36R08RqoD1R_n9LYkBUA1K28.mlMBJzlkpf1BjWoQ63i1OZb8jQgwMbjJXPgh474xXDGMJBFDvzBxhI9hi7Zyn4Ji1bl9x7orF_DCE8N8N2tN2Y1wDBvpYj36vuCAy8eDS0S4SHXBo2o8GFTzp3PdVWLbrjJ.nFWcWSzcU6W4W0fMPBFMvR1xE1jTYbb2wQujrYf5CM2OkPnuBgutzOXZwtSGB4ofEKQyS0uZ1ksVKKa1EZAG7YNCL8SqdjmI_OVnC1cEn5xpyLAh6NtJYfN8BRG7OF_OaHeUhC3rumDMZ9.XPX.n6yqT6x7yR9fHlo.JTplt6aszUKpO3d6tjt6IwWrWsrVZxSaQx3ng-- X-Yahoo-Newman-Property: ymail-3 From: "Ron Jones" X-Original-To: "'Lancair Mailing List'" References: In-Reply-To: Subject: Gascolators and Fuel Filters X-Original-Date: Wed, 16 Jun 2010 09:09:24 -0700 X-Original-Message-ID: <010201cb0d6e$49d23e30$dd76ba90$@net> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0103_01CB0D33.9D736630" X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: AcsM22J+kVNANiz2QjuigANBrnj57wAkOoRA Content-Language: en-us This is a multi-part message in MIME format. ------=_NextPart_000_0103_01CB0D33.9D736630 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Hi, Rob & Those Still Building: I have a gascolator on my Legacy that also includes a bypass. The idea is to keep the engine running no matter what. That's why I bought the model that has the bypass. But after some thought, I realized this a fuel system with a single point of failure. I didn't like that very much, so, just like the Beechcraft products, I installed inline fuel filters for each tank. They are easily accessible as they reside in the main gear wheel wells. The reasoning is that if one filter clogs up, you can always switch to the other tank. As we know, the first few flights have a very high risk of engine failure due to fuel flow issues. Apparently, it's impossible to have perfectly clean fuel tanks and lines. There was some debris in my filters after my first flight. There was also debris (looked like small bits of sand) even after 50 hours of operation. Once, I even found a human hair. My filters are checked at every Condition Inspection. It's reassuring to have them. I also installed shutoff valves so that it's easy to inspect and clean the filters. As an Aerospace engineer friend of mine is fond of saying, designing with BOTH belts and suspenders is the best approach. I offer up these comments for those who are still building and want to add a little insurance to their first flights, and beyond. Ron Jones Legacy Innovations From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of rwolf99@aol.com Sent: Tuesday, June 15, 2010 3:38 PM To: lml@lancaironline.net Subject: [LML] Re: Orphan parts Bob -- no offense taken. Your point was very well made, to wit, be careful what you left out, because it may be more important than you think. That's really why I posted my list -- to make sure that I hadn't overlooked something. which brings me to item 2: Scott -- thanks for the suggestions. I had not considered the canopy latches moving while using them to hold the canopy slightly open. In this scenario, you have only the weight of the canopy working for you, and it's easy to imagine a bump causing the latches to retract and the canopy slamming down on your fingers. Good thing I still have the part, 'cuz now I know I need to install it. Related to Bob's fuel filter point, I have an Andair gascolator with a very fine screen built into it. I was hoping that would be good enough. I notice that Andair now makes a pleated filter with much more area. I also realize that the primary need is in early flight tests, where fiberglass dust seems to end up in the fuel system no matter how careful you are. Maybe the Andair gascolatr would be good enough later on but not in the beginning. Any thoughts, anyone? - Rob Wolf ------=_NextPart_000_0103_01CB0D33.9D736630 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hi, Rob & Those Still Building:

 

I have a gascolator on my Legacy that also includes a = bypass. The idea is to keep the engine running no matter what. That’s why = I bought the model that has the bypass.

 

But after some thought, I realized this a fuel system = with a single point of failure. I didn’t like that very much, so, just = like the Beechcraft products, I installed inline fuel filters for each tank. They = are easily accessible as they reside in the main gear wheel wells. The = reasoning is that if one filter clogs up, you can always switch to the other tank. As = we know, the first few flights have a  very high risk of engine = failure due to fuel flow issues. Apparently, it’s impossible to have perfectly = clean fuel tanks and lines.

 

There was some debris in my filters after my first = flight. There was also debris (looked like small bits of sand) even after 50 hours of operation. Once, I even found a human hair. My filters are checked at = every Condition Inspection. It’s reassuring to have them. I also = installed shutoff valves so that it’s easy to inspect and clean the = filters.

 

As an Aerospace engineer friend of mine is fond of = saying, designing with BOTH belts and suspenders is the best = approach.

 

I offer up these comments for those who are still = building and want to add a little insurance to their first flights, and = beyond.

 

Ron Jones

Legacy Innovations

 

 

From:= Lancair = Mailing List [mailto:lml@lancaironline.net] On Behalf Of = rwolf99@aol.com
Sent: Tuesday, June 15, 2010 3:38 PM
To: lml@lancaironline.net
Subject: [LML] Re: Orphan parts

 

Bob -- no offense taken.  Your point was very well = made, to wit, be careful what you left out, because it may be more important than = you think.  That's really why I posted my list -- to make sure = that I hadn't overlooked something. 

 

which brings me to item 2:

 

Scott -- thanks for the suggestions.  I had not = considered the canopy latches moving while using them to hold the canopy slightly open.  In this scenario, you have only the weight of the canopy = working for you, and it's easy to imagine a bump causing the latches to retract = and the canopy slamming down on your fingers.  Good thing I still have the = part, 'cuz now I know I need to install it.

 

Related to Bob's fuel filter point, I have an Andair = gascolator with a very fine screen built into it.  I was hoping that would be = good enough.  I notice that Andair now makes a pleated filter with much = more area.  I also realize that the primary need is in early flight = tests, where fiberglass dust seems to end up in the fuel system no matter how = careful you are.  Maybe the Andair gascolatr would be good enough later on = but not in the beginning.  Any thoughts, anyone?

 

- Rob = Wolf

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