Return-Path: Received: from relay02.roc.ny.frontiernet.net ([66.133.131.35] verified) by logan.com (CommuniGate Pro SMTP 4.1.5) with ESMTP id 2637045 for flyrotary@lancaironline.net; Tue, 14 Oct 2003 21:58:09 -0400 Received: (qmail 26933 invoked from network); 15 Oct 2003 01:58:08 -0000 Received: from unknown (HELO frontiernet.net) ([170.215.97.8]) (envelope-sender ) by relay02.roc.ny.frontiernet.net (FrontierMTA 2.3.6) with SMTP for ; 15 Oct 2003 01:58:08 -0000 Message-ID: <3F8C9BCB.AFF3B41E@frontiernet.net> Date: Tue, 14 Oct 2003 20:58:51 -0400 From: Jim Sower X-Mailer: Mozilla 4.77 [en] (Win98; U) X-Accept-Language: en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: Fuel pumps References: Content-Type: multipart/alternative; boundary="------------E2CA75FE7B81BDC0DB14F92E" --------------E2CA75FE7B81BDC0DB14F92E Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit <... I only run on one except for takeoff and landing ...> I would be inclined to switch pumps back and forth a time or two in flight. Like every hour or so. I would monitor fuel pressures from both pumps and change the filters at annual time. I'm uncomfortable with the notion of one pump being the standby unit all the time. The 3-min timer for the Facet pump is a great idea ... Jim S. Bill Eslick wrote: > Rusty, I have been using a three-minute electronic timer (home-made) to transfer fuel. The Facet pump moves about one GPH, so every time I push the button, I get three gallons. Works great for lateral trim. As for the fuel pumps, I only run on one except for takeoff and landing. When I do a run-up, the last thing I do is turn on the second pump and watch for a 2-3 psi increase in fuel pressure. That tells me it is working. At 1000 feet agl, I turn off the second pump. My theory is that by only running it for takeoff and landing, it gets very little wear and the filter will last a very long time. If the primary pump or filter go south, I have a fresh pump and filter to take the load. Bill Eslick > ____________________________________________________ > IncrediMail - Email has finally evolved - Click Here -- Jim Sower Crossville, TN; Chapter 5 Long-EZ N83RT, Velocity N4095T --------------E2CA75FE7B81BDC0DB14F92E Content-Type: multipart/related; boundary="------------6AB954999715AFCB7FFCA0D7" --------------6AB954999715AFCB7FFCA0D7 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit <... I only run on one except for takeoff and landing ...>
I would be inclined to switch pumps back and forth a time or two in flight. Like every hour or so. I would monitor fuel pressures from both pumps and change the filters at annual time. I'm uncomfortable with the notion of one pump being the standby unit all the time.

The 3-min timer for the Facet pump is a great idea ... Jim S.

Bill Eslick wrote:

Rusty, I have been using a three-minute electronic timer (home-made) to transfer fuel. The Facet pump moves about one GPH, so every time I push the button, I get three gallons. Works great for lateral trim. As for the fuel pumps, I only run on one except for takeoff and landing. When I do a run-up, the last thing I do is turn on the second pump and watch for a 2-3 psi increase in fuel pressure. That tells me it is working. At 1000 feet agl, I turn off the second pump. My theory is that by only running it for takeoff and landing, it gets very little wear and the filter will last a very long time. If the primary pump or filter go south, I have a fresh pump and filter to take the load. Bill Eslick

____________________________________________________
IncrediMail - Email has finally evolved - Click Here

--
Jim Sower
Crossville, TN; Chapter 5
Long-EZ N83RT, Velocity N4095T
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