Return-Path: Received: from out014.verizon.net ([206.46.170.46] verified) by logan.com (CommuniGate Pro SMTP 4.2.5) with ESMTP id 547523 for flyrotary@lancaironline.net; Sat, 27 Nov 2004 13:20:19 -0500 Received-SPF: pass receiver=logan.com; client-ip=206.46.170.46; envelope-from=finn.lassen@verizon.net Received: from verizon.net ([4.12.145.173]) by out014.verizon.net (InterMail vM.5.01.06.06 201-253-122-130-106-20030910) with ESMTP id <20041127181944.REOC1339.out014.verizon.net@verizon.net> for ; Sat, 27 Nov 2004 12:19:44 -0600 Message-ID: <41A8C53E.2090906@verizon.net> Date: Sat, 27 Nov 2004 13:19:42 -0500 From: Finn Lassen User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax; PROMO) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: Bubbles in fuel line from pump - new valve References: In-Reply-To: Content-Type: multipart/alternative; boundary="------------000702080805020809080204" X-Authentication-Info: Submitted using SMTP AUTH at out014.verizon.net from [4.12.145.173] at Sat, 27 Nov 2004 12:19:44 -0600 This is a multi-part message in MIME format. --------------000702080805020809080204 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Well, the problem isn't new. Two factors: 1) After handling my coolant problem I can now fly at full power indefinitely (at least until the tank runs dry). At continous full power steep climbs is where the problem has shown up. Also the handful of times when the engine quit on me after reducing power while entering the pattern are now better explained. 2) Replaced the fuel line from pump to carbs enabled me to see the bubbles in the line and know why fuel pressure would drop. I finally got curious enough to investigate and experiment. Finn Russell Duffy wrote: > > Can the explanation be that the sudden change in velocity/pressure > > caused by such a restriction cause the fuel to boil (evaporate)? > > > > Finn > > > Is this fuel flow sensor new? It sure does seem too small to me, but > if you've been using it for years with no problems, then why would it > cause a problem now? > > Rusty (rain today, fly tomorrow) > > --------------000702080805020809080204 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit Well, the problem isn't new. Two factors:
1) After handling my coolant problem I can now fly at full power indefinitely (at least until the tank runs dry). At continous full power steep climbs is where the problem has shown up. Also the handful of times when the engine quit on me after reducing power while entering the pattern are now better explained.
2) Replaced the fuel line from pump to carbs enabled me to see the bubbles in the line and know why fuel pressure would drop.

I finally got curious enough to investigate and experiment.

Finn

Russell Duffy wrote:

Message
> Can the explanation be that the sudden change in velocity/pressure
> caused by such a restriction cause the fuel to boil (evaporate)?
>
> Finn

Is this fuel flow sensor new? It sure does seem too small to me, but if you've been using it for years with no problems, then why would it cause a problem now?

Rusty (rain today, fly tomorrow)

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