X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 25 Feb 2013 08:04:26 -0500 Message-ID: X-Original-Return-Path: Received: from [198.64.152.110] (HELO sdc.com) by logan.com (CommuniGate Pro SMTP 6.0.1) with ESMTP id 6080764 for lml@lancaironline.net; Sun, 24 Feb 2013 09:31:04 -0500 Received-SPF: pass receiver=logan.com; client-ip=198.64.152.110; envelope-from=Ronald@sdc.com Received: from [192.168.0.8] [68.202.61.147] by sdc.com with ESMTP (SMTPD-12.2.0.235) id 763200007c5f01dd; Sun, 24 Feb 2013 09:26:18 -0500 Subject: Re: [LML] Identifying separate bypass for fuel priming References: From: Ronald STEVENS Content-Type: multipart/alternative; boundary=Apple-Mail-19A4B357-7AFA-4AF6-B661-A3E8DF3777FA X-Mailer: iPad Mail (10B141) In-Reply-To: X-Original-Message-Id: <5B5D0A64-1BEC-4544-904F-A4D5B7572D15@sdc.com> X-Original-Date: Sun, 24 Feb 2013 09:30:22 -0500 X-Original-To: Lancair Mailing List Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (1.0) --Apple-Mail-19A4B357-7AFA-4AF6-B661-A3E8DF3777FA Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable I installed a purge valve as i did also been caught in the past by having ho= t start problems. Most 'tricks' work, but murphy's law dictate it will not w= ork when alone, in the dark on a airfield without fbo lol The purge valve is the first I use when my first hot start fails, I like to s= ave my starter from getting to hot ;)- Ronald Stevens LNC4p >250hours and loving it.... On Feb 23, 2013, at 10:58 PM, George Wehrung wrote: > All, >=20 > I actually got home today to fly the grey lady. It was a great flight to Fre= nch Valley until I stalled taxiing and could not get the hot start to work f= or me. Quite embarrassing. So got back to home base and popped the top cowl o= ff and noticed what I beleive to be a separate fuel priming circuit. I see t= he normal lines that run thru the fuel pump, gascolator, fuel flow transmitt= er and into the manifold on the right side of the intake manifold. Then the f= uel path crosses over the top in a small stainless line to the spider manifo= ld on the left side.=20 >=20 > Oh yeah, IO-550-N. non turbo.=20 >=20 > Then I noticed a pair of black rubber coated fuel lines on the left side o= f the engine that go to the intake manifold and the spider. The one to the s= pider looks like a drain line whereas the one to the manifold on the left si= de appears to be a priming circuit.=20 >=20 > So with what I beleive to be a priming circuit is there a different proced= ure for hot starts to move the vaporized fuel out of the injector lines? >=20 >=20 >=20 > Sent from my iPhone >=20 > On Feb 23, 2013, at 14:41, Sky2high@aol.com wrote: >=20 >> Angier, >> =20 >> With the strut fully extended a little play may not be as important as th= e same play when weight is on the nose wheel and the strut is some compresse= d. In this case, the test is to use two steel/Al plates with grease between= them placed under the nose wheel whilst on the floor and the strut has weig= ht on it. Then you should be able to turn the wheel without too much effort= and perhaps see if there is play - simulated taxi condition. >> =20 >> Grayhawk >> =20 >> In a message dated 2/23/2013 4:32:37 P.M. Central Standard Time, N4ZQ@ver= izon.net writes: >> I removed the fork this morning and inspected the strut which was dry ins= ide. >> Bled off the pressure and removed the little valve stem piece thingy, col= lapsed the strut and no oil came out. >> I added a bit more than 1oz of fork oil which was just enough to have the= oil flow from the valve with the strut collapsed. >> Worked the nose wheel side to side and could hear some air inside so kept= doing this as well as collapsing/extending the strut. After a while, no air= bubbles could be heard. But I have one observation and don't know if it's n= ormal or not since I don't know how the dampening is accomplished inside. Wi= th the wheel centered or in any other position right or left, I can move the= wheel perhaps a degree or two either side and don't feel as much dampening a= s I do when turning the wheel further left or right. Seems like a dead or nu= ll zone either side of where the wheel is positioned. I'll check again in th= e morning and then pressurize the strut and then see how it feels. >>=20 >> My tire pressures are 60 on the mains and 55 on the nose as recommended b= y a well known Lancair GURU... >> Thorough inspection of the engine mount shows all normal and wheel bearin= gs are correctly loaded. >>=20 >> Angier Ames >> N4ZQ >> -- >> For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.ht= ml --Apple-Mail-19A4B357-7AFA-4AF6-B661-A3E8DF3777FA Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
I installed a purge valve as i did als= o been caught in the past by having hot start problems. Most 'tricks' work, b= ut murphy's law dictate it will not work when alone, in the dark on a airfie= ld without fbo lol
The purge valve is the first I use when my firs= t hot start fails, I like to save my starter from getting to hot ;)-

= Ronald Stevens LNC4p  >250hours and loving it....



On Feb 23, 2013, at 10:58 PM, George Wehrung <<= a href=3D"mailto:gw5@me.com">gw5@me.com> wrote:

All,

I actually got home t= oday to fly the grey lady. It was a great flight to French Valley until I st= alled taxiing and could not get the hot start to work for me. Quite embarras= sing. So got back to home base and popped the top cowl off and noticed what I= beleive to be a separate fuel priming circuit. I see the normal lines that r= un thru the fuel pump, gascolator, fuel flow transmitter and into the manifo= ld on the right side of the intake manifold. Then the fuel path crosses over= the top in a small stainless line to the spider manifold on the left side.&= nbsp;

Oh yeah, IO-550-N. non turbo. 

Then I noticed a pair of black rubber coated fuel lines on t= he left side of the engine that go to the intake manifold and the spider. Th= e one to the spider looks like a drain line whereas the one to the manifold o= n the left side appears to be a priming circuit. 

<= div>So with what I beleive to be a priming circuit is there a different proc= edure for hot starts to move the vaporized fuel out of the injector lines?



Sent from my iPhone

On Feb 23,= 2013, at 14:41, Sky2high@aol.com wr= ote:

=
Angier,
 
With the strut fully extended a little play may not be as importan= t as=20 the same play when weight is on the nose wheel and the strut is some=20 compressed.  In this case, the test is to use two steel/Al plates with=20= grease between them placed under the nose wheel whilst on the floor and the=20= strut has weight on it.  Then you should be able to turn the wheel with= out=20 too much effort and perhaps see if there is play - simulated taxi=20 condition.
 
Grayhawk
 
In a message dated 2/23/2013 4:32:37 P.M. Central Standard Time,=20 N4ZQ@verizon.net writes:
I=20 removed the fork this morning and inspected the strut which was dry=20 inside.
Bled off the pressure and removed the little valve stem piece=20= thingy, collapsed the strut and no oil came out.
I added a bit more tha= n=20 1oz of fork oil which was just enough to have the oil flow from the valve w= ith=20 the strut collapsed.
Worked the nose wheel side to side and could hear s= ome=20 air inside so kept doing this as well as collapsing/extending the strut. A= fter=20 a while, no air bubbles could be heard. But I have one observation and don= 't=20 know if it's normal or not since I don't know how the dampening is=20 accomplished inside. With the wheel centered or in any other position righ= t or=20 left, I can move the wheel perhaps a degree or two either side and don't f= eel=20 as much dampening as I do when turning the wheel further left or right. Se= ems=20 like a dead or null zone either side of where the wheel is positioned. I'l= l=20 check again in the morning and then pressurize the strut and then see how i= t=20 feels.

My tire pressures are 60 on the mains and 55 on the nose as=20= recommended by a well known Lancair GURU...
Thorough inspection of the=20= engine mount shows all normal and wheel bearings are correctly=20 loaded.

Angier Ames
N4ZQ
--
For archives and unsub=20 http://ma= il.lancaironline.net:81/lists/lml/List.html
= --Apple-Mail-19A4B357-7AFA-4AF6-B661-A3E8DF3777FA--