Return-Path: Received: from [199.185.220.223] (HELO priv-edtnes27.telusplanet.net) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 2908520 for flyrotary@lancaironline.net; Sun, 28 Dec 2003 17:10:05 -0500 Received: from Endurance ([207.194.22.106]) by priv-edtnes27.telusplanet.net (InterMail vM.6.00.05.02 201-2115-109-103-20031105) with SMTP id <20031228221003.HPLN16416.priv-edtnes27.telusplanet.net@Endurance> for ; Sun, 28 Dec 2003 15:10:03 -0700 From: "Haywire" To: "Rotary motors in aircraft" Subject: RE: [FlyRotary] Re: Fuel Coolers Date: Sun, 28 Dec 2003 14:09:57 -0800 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) In-reply-to: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 Importance: Normal > I don't know the size of your header tank, but if it > is small consider the unused fuel recirculating > between your fuel log and header tank time and time > again and how much heat this can generate. This is > why on most installations it is returned to a large > tank where it can be mixed with cool fuel. I don't > think shielding or cooling the pumps gets to the > problem. Be careful guys! Jim Coffman My header tank is 15litres or 4usg. I've definitely considered that the recirc of fuel alone can add heat and this is amplified by the use of 2 FI pumps, which is my new practice while doing touch and goes. Previously I only used one, but several times I found that the idle pump would become vapour locked, so wouldn't have been available if it had been required, so I felt that it was better to keep both on while in the circuit. S. Todd Bartrim Turbo 13B RV-9Endurance C-FSTB http://www3.telus.net/haywire/RV-9/C-FSTB.htm "Whatever you vividly imagine, Ardently desire, Sincerely believe in, Enthusiastically act upon, Must inevitably come to pass".