X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 09 Jun 2011 14:13:20 -0400 Message-ID: X-Original-Return-Path: Received: from elasmtp-masked.atl.sa.earthlink.net ([209.86.89.68] verified) by logan.com (CommuniGate Pro SMTP 5.4.0) with ESMTP id 5013486 for lml@lancaironline.net; Wed, 08 Jun 2011 09:59:45 -0400 Received-SPF: none receiver=logan.com; client-ip=209.86.89.68; envelope-from=colyncase@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=XanG5l75f9KAXjavTgROA/hk2EbQsh5YGqQws96SUd0X9eCMh+MkrfKrq+O6Gx5x; h=Received:From:Mime-Version:Content-Type:Subject:Date:In-Reply-To:To:References:Message-Id:X-Mailer:X-ELNK-Trace:X-Originating-IP; Received: from [216.57.118.194] (helo=[192.168.1.100]) by elasmtp-masked.atl.sa.earthlink.net with esmtpa (Exim 4.67) (envelope-from ) id 1QUJHp-0005SV-5P for lml@lancaironline.net; Wed, 08 Jun 2011 09:59:09 -0400 From: Colyn Case Mime-Version: 1.0 (Apple Message framework v1082) Content-Type: multipart/alternative; boundary=Apple-Mail-450-669350549 Subject: Re: [LML] hot start procedures? X-Original-Date: Wed, 8 Jun 2011 09:59:08 -0400 In-Reply-To: X-Original-To: "Lancair Mailing List" References: X-Original-Message-Id: <15402540-30C7-44B9-832B-9AC70FAC228A@earthlink.net> X-Mailer: Apple Mail (2.1082) X-ELNK-Trace: 63d5d3452847f8b1d6dd28457998182d7e972de0d01da940265a6c51ddb56feee6d084b7bb66e0b6350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 216.57.118.194 --Apple-Mail-450-669350549 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=windows-1252 Craig, Can you comment on what and where the mixture control and throttle takes = effect with the OLD and NEW fuel pump? As I understand it, with the OLD fuel pump the throttle controlled total = fuel flow through the pump but the mixture controlled what went to the = spider. So therefore WOT + cut-off meant max fuel from the tanks, = through the pump and back to the tanks via the vapor return. Do I have = that right? =20 So what is happening with the new fuel pump? Also do you know roughly when the NEW fuel pump started manufacture? My engine is a 1995 tsio-550B and seems to work with the WOT + cutoff = method. Colyn On Jun 8, 2011, at 8:25 AM, Craig Berland. wrote: > What have you found to be the best hot start procedure for a TSIO 550, = with mags, in an IVP? I'm not talking immediately after engine shut = down, but shut down on a hot tarmac after 30 to 40 minutes so the fuel = lines are nice and hot and boiling the internal fuel. > Thanks, John > IVP 413AJ >=20 > 1. Wide open throttle, mixture full rich and high boost on for a few = seconds. Just long enough to fill the lines with fuel. If fuel runs out = the sniffle valve the high boost was on too long. > 2. Leave throttle near wide open and pull mixture to idle cut off. > 3. Turn low boost on and immediately start cranking engine while = pushing in the mixture knob slowing until engine fires. > Be prepared to retard the throttle as the engine speed will go quite = high if you get a clean start. Leave the low boost on for several = minutes and control idle quality with the mixture knob. Once the idle = quality is good, the low boost electric fuel pump can be turned off. > =20 > You can NOT use the =93old=94 method of WOT, mixture at idle cut off = and run the high boost electric pump for 30 seconds. The new Continental = fuel pumps will allow a LOT of fuel to flow at cranking speeds and the = mixture in idle cut off. I guess you can use this method if you want 2 = gallons of 100LL under the plane. I=92m guessing it was about 2 gallons = I mopped up. > =20 > Craig Berland > Arizona (lots of hot starts) > N7VG --Apple-Mail-450-669350549 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=windows-1252 Craig,

Can you comment on what = and where the mixture control and throttle takes effect with the OLD and = NEW fuel pump?

As I understand it, with the OLD = fuel pump the throttle controlled total fuel flow through the pump but = the mixture controlled what went to the spider.  So therefore WOT + = cut-off meant max fuel from the tanks, through the pump and back to the = tanks via the vapor return.   Do I have that right? =   

So what is happening with the new = fuel pump?

Also do you know roughly when the = NEW fuel pump started manufacture?

My engine is = a 1995 tsio-550B and seems to work with the WOT + cutoff = method.

Colyn


<= div>On Jun 8, 2011, at 8:25 AM, Craig Berland. wrote:

What have you found to be = the best hot start procedure for a TSIO 550, with mags, in an IVP? I'm = not talking immediately after engine shut down, but shut down on a hot = tarmac after 30 to 40 minutes so the fuel lines are nice and hot and = boiling the internal fuel.
Thanks, John
IVP = 413AJ

1. Wide open throttle, mixture full rich and high = boost on for a few seconds.  Just long enough to fill the lines = with fuel. If fuel runs out the sniffle valve the high boost was on too = long.
2. Leave throttle near wide open and pull mixture to idle cut = off.
3. = Turn low boost on and immediately start cranking engine while pushing in = the mixture knob slowing until engine fires.
Be prepared to retard the = throttle as the engine speed will go quite high if you get a clean = start.  Leave the low boost on for several minutes and control idle = quality with the mixture knob. Once the idle quality is good, the low = boost electric fuel pump can be turned off.
You = can NOT use the =93old=94 method of WOT, mixture at idle cut off and run = the high boost electric pump for 30 seconds. The new Continental fuel = pumps will allow a LOT of fuel to flow at cranking speeds and the = mixture in idle cut off.  I guess you can use this method if you = want 2 gallons of 100LL under the plane.  I=92m guessing it was = about 2 gallons I mopped up.
Craig = Berland