X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 2 [X] Return-Path: Received: from vms044pub.verizon.net ([206.46.252.44] verified) by logan.com (CommuniGate Pro SMTP 5.1.7) with ESMTP id 1927539 for flyrotary@lancaironline.net; Sun, 18 Mar 2007 08:20:51 -0400 Received: from [70.6.40.254] ([70.0.212.218]) by vms044.mailsrvcs.net (Sun Java System Messaging Server 6.2-6.01 (built Apr 3 2006)) with ESMTPA id <0JF300D1AMAL3IWA@vms044.mailsrvcs.net> for flyrotary@lancaironline.net; Sun, 18 Mar 2007 07:20:51 -0500 (CDT) Date: Sun, 18 Mar 2007 05:21:04 -0700 From: Ken Welter Subject: Re: [FlyRotary] water boiling point In-reply-to: To: "Rotary motors in aircraft" Message-id: MIME-version: 1.0 Content-type: multipart/alternative; boundary="============_-1037902004==_ma============" References: --============_-1037902004==_ma============ Content-Type: text/plain; charset="us-ascii" ; format="flowed" My same thought, the higher pressure the better chance of leaks, for the last 1400 hrs I have been running a 7 lb cap with no problem, I normally run about 180 for water temp but do see 220 on a hard climb out on a hot day and when at high altitude its usually so cold outside that cooling is not an issue. Ken Welter >Thanks for your reply Tracy! > >I did a google search on water boiling point. Coolant should be higher, >but it seems that water boils at 183 degrees at 16,000 feet. But that >is with no added pressure. I could not find the corrected number >for the 12 psi cap. > >I wonder how many blown rotor housing seals are due to higher >coolant pressure ? > > > > >George Graham >Sarasota Florida >Mazda RX7 EZ > > > >It's here! Your new message! >Get >new >email alerts with the free < >http://us.rd.yahoo.com/evt=49938/*http://tools.search.yahoo.com/toolbar/features/mail/>Yahoo! >Toolbar. --============_-1037902004==_ma============ Content-Type: text/html; charset="us-ascii" Re: [FlyRotary] water boiling point
  My same thought, the higher pressure the better chance of leaks, for the last 1400 hrs I have been running a 7 lb cap with no problem, I normally run about 180 for water temp but do see 220 on a hard climb out on a hot day and when at high altitude its usually so cold outside that cooling is not an issue.
 Ken Welter







Thanks for your reply Tracy!

I did a google search on water boiling point.  Coolant should be higher,
but it seems that water boils at 183 degrees at 16,000 feet. But that
is with no added pressure.  I could not find the corrected number for the 12 psi cap.

I wonder how many blown rotor housing seals are due to higher coolant pressure ? 




George Graham
Sarasota Florida
Mazda RX7 EZ
 
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