X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 20 Jul 2010 07:57:16 -0400 Message-ID: X-Original-Return-Path: Received: from mail-qw0-f52.google.com ([209.85.216.52] verified) by logan.com (CommuniGate Pro SMTP 5.3.8) with ESMTP id 4399303 for lml@lancaironline.net; Mon, 19 Jul 2010 22:45:46 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.216.52; envelope-from=vonjet@gmail.com Received: by qwf7 with SMTP id 7so1915273qwf.25 for ; Mon, 19 Jul 2010 19:45:10 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=sRm/MbPK0OZQxl14cr9Vq6ApknicxqBDQ3mEk7WX6VXU6GtdEdYYJM4qhnGfIsGJsK 1/B9JDjPe60op81674L5O2zj0vIFcPtjOgT7Yg1H8dzT52J6rn4ufW0vlxYVazwQ5iVS EC3hqXnG1y5uNwvGq516k63aD1i5aR69DHyCo= MIME-Version: 1.0 Received: by 10.224.10.204 with SMTP id q12mr5492895qaq.169.1279593909727; Mon, 19 Jul 2010 19:45:09 -0700 (PDT) Received: by 10.229.240.147 with HTTP; Mon, 19 Jul 2010 19:45:09 -0700 (PDT) In-Reply-To: References: X-Original-Date: Mon, 19 Jul 2010 19:45:09 -0700 X-Original-Message-ID: Subject: Re: [LML] Re: My airplane is running HOT From: Bryan Wullner X-Original-To: Lancair Mailing List Content-Type: multipart/alternative; boundary=0015175cdd8e723428048bc8aca6 --0015175cdd8e723428048bc8aca6 Content-Type: text/plain; charset=ISO-8859-1 Thank you guys for all the suggestions. How would I check the differential pressures in the cowling inflight? Craig, the oil cooler I have now is a vans aircraft 7 vane cooler. I have a feeling its not doing the job needed. I have a stewart warner 9 vane cooler I will be switching too. So for now, oil cooler changed, Vernatherm will be checked and then I will go from there. Bryan On Mon, Jul 19, 2010 at 3:15 AM, Don Karich wrote: > you could check the differential pressure before and after the plenum. > should be about 5 inches of difference. If this is the case, i'd replace > the vernotherm first. Mine was brand new and i did everything possi ble > including adding a second oil cooler. my temps were 230 and the 2nd oil > cooler brought them down a little but after changing the vernatherm i now > have 180 to 205. It follows amb ient . I have a IO-540 from performance and > my vernotherm was new. > > On Sun, Jul 18, 2010 at 10:47 AM, Craig Schulze wrote: > >> Hi Bryan, >> >> >> >> I have seen your airplane and I do not think you have an exit problem. >> You have plenum from Chris Z, so you are great there. Can you verify for >> sure that your probes are all calibrated and reading the proper temp? And >> on the subject of fuel flow, my little 320 needs 12.5 gph or better in the >> climb and sometimes it will still get hot when its this hot out. You should >> be 18 gph on take off and at least 14 on climb. Keep your climb speed at >> 150kts or better on these hot days too. What brand oil cooler are you >> using? I switched mine to a dual pass Stewart Warner and it made a big >> difference. Can you send me a picture of the bottom baffling around the >> cylinders? Something could be off there. >> >> >> >> Craig Schulze >> >> >> >> >> >> *From:* Bill Bradburry [mailto:bbradburry@bellsouth.net] >> *Sent:* Saturday, July 17, 2010 4:44 PM >> *To:* lml@lancaironline.net >> *Subject:* RE: [LML] Re: My airplane is running HOT >> >> >> >> Check the air pressure in flight above the cylinders and compare it to the >> air pressure below the cylinders. You may find that you need to add a cowl >> flap. At least you can see how the air is moving thru the cowl in flight. >> That will go a long way to solving the problem. >> >> >> >> Bill B >> >> >> ------------------------------ >> >> *From:* Lancair Mailing List [mailto:lml@lancaironline.net] *On Behalf Of >> *Bryan Wullner >> *Sent:* Saturday, July 17, 2010 2:41 PM >> *To:* lml@lancaironline.net >> *Subject:* [LML] Re: My airplane is running HOT >> >> >> >> Exit area is standard 360 cowling exit. Can see why it would behave any >> different than any other lancair out there. Its actually a pretty good size >> opening. >> >> >> >> >> >> On Fri, Jul 16, 2010 at 8:21 PM, wrote: >> >> Posted for Bryan Wullner : >> >> Anybody have any ideas or advice for the following situation: >> >> Lancair 360 with carbed 360 (180hp) engine. 475 hours on it about. Chrome >> Cylinders. I have a Plenum cooling system and larger cowling inlets. >> (Zavatson's cowling and plenum system) >> Oil cooler is mounted at the front inlet. >> >> Oil wont cool in climb and will go up to 230 and probably higher if not >> stabilized. CHT's are all hot in climbs and will go to 440 no problem. >> Cant >> figure it out. >> Motor runs great, compression good, boroscoped fine, mag timing good. All >> leaks in plenum or baffling are sealed. >> Probes were checked out ok. >> >> Only thing I haven't checked is the vernotherm. >> >> Thanks for any advice. >> Bryan >> >> [How big are your cooling air outlets and where are they located? Sounds >> like you're getting the cooling air in but not letting it out. Just a >> thought. ] >> >> -- >> >> >> >> For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.html >> >> >> > > --0015175cdd8e723428048bc8aca6 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Thank you guys for all the suggestions.
How would I check the different= ial pressures in the cowling inflight?=A0

Craig, t= he oil cooler I have now is a vans aircraft 7 vane cooler. I have a feeling= its not doing the job needed. I have a stewart warner 9 vane cooler I will= be switching too.

So for now, oil cooler changed,=A0Vernatherm will be ch= ecked and then I will go from there.

Bryan

On Mon, Jul 19, 2010 at 3:15 AM, Don Kari= ch <donkarich@g= mail.com> wrote:
you could check the differential pressure b= efore and after the plenum. should be about=A0 5 inches of difference. If t= his is the case,=A0 i'd replace the vernotherm first. Mine was brand ne= w and i did everything possi ble including adding=A0 a second oil cooler. m= y temps were 230 and the 2nd oil cooler brought them down a little but afte= r changing the=A0 vernatherm i now have 180 to 205. It follows amb ient . I= have a IO-540 from performance and my vernotherm was new.

On Sun, Jul 18, 2010 at 10:47 AM, Craig Schulze = <craig@skybolt.net> wrote:

Hi Brya= n,

=A0

I have = seen your airplane and I do not think you have an exit problem.=A0 You have= plenum from Chris Z, so you are great there.=A0 Can you verify for sure th= at your probes are all calibrated and reading the proper temp?=A0 And on th= e subject of fuel flow, my little 320 needs 12.5 gph or better in the climb= and sometimes it will still get hot when its this hot out. You should be 1= 8 gph on take off and at least 14 on climb. Keep your climb speed at 150kts= or better on these hot days too.=A0 What brand oil cooler are you using?= =A0 I switched mine to a dual pass Stewart Warner and it made a big differe= nce.=A0 Can you send=A0 me a picture of the bottom baffling around the cyli= nders?=A0 Something could be off there.=A0

=A0

Craig S= chulze

=A0

=A0

From: Bill Bradburry [mailto:bbradburry@bellsouth.net]
<= b>Sent: Saturday, July 17, 2010 4:44 PM
To: lml@l= ancaironline.net
Subject: RE: [LML] Re: My airplane is runnin= g HOT

=A0

Check the = air pressure in flight above the cylinders and compare it to the air pressu= re below the cylinders.=A0 You may find that you need to add a cowl flap.= =A0 At least you can see how the air is moving thru the cowl in flight.=A0 = That will go a long way to solving the problem.

=A0=

Bill B

=A0=

From: Lancair Mailing List [mailto:lml@lancaironline.net] On= Behalf Of Bryan Wullner
Sent: Saturday, July 17, 2010 2:41 PM
To: lml@lancaironline.net
= Subject: [LML] Re: My airplane is running HOT

=A0

Exit area is standard 360 cowling exit. Can see why = it would behave any different than any other lancair out there. Its actuall= y a pretty good size opening.

=A0

=A0

On Fri, Jul 16, 2010 at 8:21 PM, <marv@lancair.net> wrote:

Posted for Bryan Wullner <vonjet@gmail.com>:

=A0Anybody have any ideas = or advice for the following situation:
=A0
=A0Lancair 360 with carbed 360 (180hp) engine. 475 hours on it about= . Chrome
=A0Cylinders. I have a Plenum cooling system and larger cowling= inlets.
=A0(Zavatson's cowling and plenum system)
=A0Oil cooler = is mounted at the front inlet.


=A0Oil wont cool in climb and will go up to 230 and probably higher if not<= br>=A0stabilized. CHT's are all hot in climbs and will go to 440 no pro= blem. Cant
=A0figure it out.
=A0Motor runs great, compression g= ood, boroscoped fine, mag timing good. All
=A0leaks in plenum or baffling are sealed.
=A0Probes were checked out ok= .
=A0
=A0Only thing I haven't checked is the vernotherm.
=A0=A0Thanks for any advice.
=A0Bryan

[How big are your cooling ai= r outlets and where are they located?=A0 Sounds like you're getting the= cooling air in but not letting it out.=A0 Just a thought.=A0 <Marv>= =A0 ]

--
=A0
For archives and un=
sub http://mail.lancaironline.net:81/lists/lml/List.html
<= /div>

=A0


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