X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [199.185.220.224] (HELO priv-edtnes40.telusplanet.net) by logan.com (CommuniGate Pro SMTP 5.0.3) with ESMTP id 871463 for flyrotary@lancaironline.net; Sun, 11 Dec 2005 11:45:23 -0500 Received-SPF: pass receiver=logan.com; client-ip=199.185.220.224; envelope-from=echolakeresort@telus.net Received: from echolake-cc8a26 ([207.194.26.153]) by priv-edtnes40.telusplanet.net (InterMail vM.6.01.04.04 201-2131-118-104-20050224) with ESMTP id <20051211164431.DKBQ15048.priv-edtnes40.telusplanet.net@echolake-cc8a26> for ; Sun, 11 Dec 2005 09:44:31 -0700 MIME-Version: 1.0 Message-Id: <439C5642.000006.03712@ECHOLAKE-CC8A26> Date: Sun, 11 Dec 2005 08:39:30 -0800 (Pacific Standard Time) Content-Type: Multipart/Alternative; boundary="------------Boundary-00=_U9EC12S0000000000000" X-Mailer: IncrediMail (4502089) From: "Echo Lake Fishing Resort (Georges Boucher)" References: To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: Radiator Expansion Tank X-FID: FLAVOR00-NONE-0000-0000-000000000000 X-Priority: 3 --------------Boundary-00=_U9EC12S0000000000000 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Todd=0D Can you explain how using two pressure caps (one 22lb & one 15 lb) add up= to a possible total system pressure of 37lbs. I can only see it as a max of 22lbs,=0D Georges B. =0D =0D -------Original Message-------=0D =0D From: Todd Bartrim=0D Date: 12/11/05 00:24:08=0D To: Rotary motors in aircraft=0D Subject: [FlyRotary] Re: Radiator Expansion Tank=0D =0D Hi Al;=0D While my system is laid out somewhat differently (not withstanding th= e EWP), I too have 2 pressure caps, one 22psi cap on the system and a 15 ps= i cap on the overflow bottle. My overflow bottle is a new snowmobile coolan= t bottle that I had surplus and it happened to have a 1bar cap one it. Now = I had expected to see compound pressures on my system (22+15=3D37), but hav= e never seen greater than 23 psi. (On my latest flight it appears that the coolant press reg has failed as it read 0 psi even when I loosened the ca= p and found plenty of pressure).=0D In your post you state that it is possible to reach 38 psi, then you = go on to say that on take-off your system is at least 23 psi. So my question= is have you ever seen any compound pressures in your system (greater than 23 psi ???)=0D =0D Todd (rum & eggnog.... shopuld I have another???? hmmnnn, decisions..= )=0D =0D -----Original Message-----=0D From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of Al Gietzen=0D Sent: Saturday, December 10, 2005 5:46 PM=0D To: Rotary motors in aircraft=0D Subject: [FlyRotary] Re: Radiator Expansion Tank=0D =0D =0D Al, =0D Yes! with everyone's input, it does now make sense, mind you I had seen t= hat picture before and was somewhat confused with all the pipes going here an= d there, I could never understand what was going where. =0D One question Al, I thought the expansion bottle might need to be bigger a= s big as the overflow bottle shown - I guess your saying that it doesn't ne= ed to be that large as the overflow is taking up any further expansion. =0D George ( down under)=0D In my case the overflow bottle is the expansion tank. The filler neck st= ays completely full of coolant.=0D I don=92t know exactly how much total expansion there is; but I know that starting with about 3-4=94 in the bottom of the overflow bottle, no coola= nt goes overboard from there when the coolant temp is up to 220F, so the tot= al is less than a quart. At some point I will leave the cap off the overflo= w bottle and observe the change in the coolant level from cold to hot.=0D Al=0D =20 --------------Boundary-00=_U9EC12S0000000000000 Content-Type: Text/HTML; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Todd
Can you explain how using two pressure caps (one 22lb & one 15 l= b) add up to a possible total system pressure of 37lbs. I can only see it= as a max of 22lbs,
Georges B. 
 
-------Original Message-------
 
Date: 12/11/05 00:= 24:08
Subject: [FlyRotar= y] Re: Radiator Expansion Tank
 
Hi Al;
    While my system is laid out somewhat differen= tly (not withstanding the EWP), I too have 2 pressure caps, one 22psi cap= on the system and a 15 psi cap on the overflow bottle. My overflow bottl= e is a new snowmobile coolant bottle that I had surplus and it happened t= o have a 1bar cap one it. Now I had expected to see compound pressures on= my system (22+15=3D37), but have never seen greater than 23 psi. (On my = latest flight it appears that the coolant press reg has failed as it read= 0 psi even when I loosened the cap and found plenty of pressure).=
    In your post you state that it is possible to= reach 38 psi, then you go on to say that on take-off your system is at l= east 23 psi. So my question is have you ever seen any compound pressures = in your system (greater than 23 psi ???)
 
Todd    (rum & eggnog.... shopuld I have anot= her????  hmmnnn, decisions..)
 
-----Original Message-----
From: Rotary motors in = aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of Al Gietz= en
Sent: Saturday, December 10, 2005 5:46 PM
To: Rota= ry motors in aircraft
Subject: [FlyRotary] Re: Radiator Expansi= on Tank

Al,

Yes! with everyone's input, it= does now make sense, mind you I had seen that picture before and was som= ewhat confused with all the pipes going here and there, I could never und= erstand what was going where.

One question Al, I thought the= expansion bottle might need to be bigger as big as the overflow bottle s= hown - I guess your saying that it doesn't need to be that large as = the overflow is taking up any further expansion.

George ( down under)

In my case the overflow bottle is the expansion tan= k.  The filler neck stays completely full of coolant.<= /P>

I don=92t know exactly how much t= otal expansion there is; but I know that starting with about 3-4=94 in th= e bottom of the overflow bottle, no coolant goes overboard from there whe= n the coolant temp is up to 220F, so the total is less than a quart. = ; At some point I will leave the cap off the overflow bottle and observe = the change in the coolant level from cold to hot.

Al

<= /DIV>
 
--------------Boundary-00=_U9EC12S0000000000000--