X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [216.52.245.18] (HELO ispwest-email1.mdeinc.com) by logan.com (CommuniGate Pro SMTP 5.0.6) with ESMTP id 918550 for flyrotary@lancaironline.net; Mon, 09 Jan 2006 09:52:54 -0500 Received-SPF: none receiver=logan.com; client-ip=216.52.245.18; envelope-from=wschertz@ispwest.com Received: from 7n7z201 (4Cust3.VR1.CHI6.broadband.uu.net [63.13.186.3]) by ispwest-email1.mdeinc.com (Vircom SMTPRS 4.2.425.16) with SMTP id for ; Mon, 9 Jan 2006 06:51:50 -0800 X-Modus-ReverseDNS: OK X-Modus-BlackList: 63.13.186.3=OK;wschertz@ispwest.com=OK X-Modus-RBL: 63.13.186.3=OK X-Modus-Trusted: 63.13.186.3=NO Message-ID: <00d501c6152b$f26d3c60$0400000a@7n7z201> From: "William" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Frozen coolant... Date: Mon, 9 Jan 2006 08:49:51 -0600 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00D2_01C614F9.A761BB10" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_00D2_01C614F9.A761BB10 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I would like to support Barry's observation. If you truly had 25/75 mix, = and the temp dropped to the 20's, the most the coolant would have likely = done is to turn to a slush that doesn't generate the massive forces that = ice generates. Checking for the previous leak is certainly a good idea.=20 Bill Schertz KIS Cruiser # 4045 ----- Original Message -----=20 From: Barry Gardner=20 To: Rotary motors in aircraft=20 Sent: Monday, January 09, 2006 6:00 AM Subject: [FlyRotary] Re: Frozen coolant... Dave, You might be too pessimistic. Glycol/water in a 25/75 mix is supposed = to protect down to 15 degrees, according to tables I looked up. Low 20's = shouldn't have been a problem. Even near the transition point, the mix = turns slushy before freezing solid.=20 Nonetheless, you've obviously got a leak somewhere. Just don't assume = the worst until you've confirmed it's true. Is your recent leak fix = still holding? First place I'd look. Pressurizing the system is a good idea. Auto parts stores like = Autozone will lend you the coolant system pressure tester that fits in = standard radiator cap openings. Pressurize and see where it leaks. You = can also dump in a UV dye indicator (I've bought it at NAPA), run the = engine briefly and then look for the leak using a black light. I've used = both the pressure tester and UV dye. Sorry about your troubles. Barry Gardner Wheaton, IL David Leonard wrote:=20 I flew to Mammoth this weekend for some snow boarding. Has a great = time, and was 210 kts GS on the way up. Parked the plane for two nights and came back out this afternoon for = the flight home. But there was a small puddle of coolant under the = engine... and it was still dripping. =20 Then I remembered. I recently sprung a leak in a cooling line - = while away from home. After fixing the leak I used tap water to refill = what coolant had been lost - about a gallon. I had forgotten all about = that on this latest trip... to the mountains. I figure the antifreeze = level was now down to about 25/75 and the overnight temps in the low = 20's did the job.=20 I had to concentrate on getting back home for work tomorrow so I = couldn't do much. I couldn't even take off the lower cowl. I suspect the radiator is cracked somewhere. Anyone have any = experience with this sort of thing? Can this do damage to the engine = block? The radiator is custom and will not be cheap to replace, and it = will take a while, and the plane is an 8 hour drive away... :-(=20 --=20 Dave Leonard Turbo Rotary RV-6 N4VY http://members.aol.com/_ht_a/rotaryroster/index.html http://members.aol.com/_ht_a/vp4skydoc/index.html=20 -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/ ------=_NextPart_000_00D2_01C614F9.A761BB10 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
I would like to support Barry's = observation. If you=20 truly had 25/75 mix, and the temp dropped to the 20's, the most the = coolant=20 would have likely done is to turn to a slush that doesn't generate the = massive=20 forces that ice generates. Checking for the previous leak is certainly a = good=20 idea.
Bill Schertz
KIS Cruiser # 4045
----- Original Message -----
From:=20 Barry=20 Gardner
Sent: Monday, January 09, 2006 = 6:00=20 AM
Subject: [FlyRotary] Re: Frozen = coolant...

Dave,

You might be too pessimistic. Glycol/water = in a=20 25/75 mix is supposed to protect down to 15 degrees, according to = tables I=20 looked up. Low 20's shouldn't have been a problem. Even near the = transition=20 point, the mix turns slushy before freezing solid. =

Nonetheless, you've=20 obviously got a leak somewhere. Just don't assume the worst until = you've=20 confirmed it's true. Is your recent leak fix still holding? First = place I'd=20 look.

Pressurizing the system is a good idea. Auto parts stores = like=20 Autozone will lend you the coolant system pressure tester that fits in = standard  radiator cap openings. Pressurize and see where it = leaks. You=20 can also dump in a UV dye indicator (I've bought it at NAPA), run the = engine=20 briefly and then look for the leak using a black light. I've used both = the=20 pressure tester and UV dye.

Sorry about your = troubles.

Barry=20 Gardner
Wheaton, IL

David Leonard wrote:=20
I flew to Mammoth this weekend for some snow boarding.  = Has a=20 great time, and was 210 kts GS on the way up.
 
Parked the plane for two nights and came back out this = afternoon for=20 the flight home.  But there was a small puddle of coolant under = the=20 engine... and it was still dripping. 
 
Then I remembered.  I recently sprung a leak in a cooling = line -=20 while away from home.  After fixing the leak I used tap water = to refill=20 what coolant had been lost - about a gallon.  I had forgotten = all about=20 that on this latest trip... to the mountains.  I figure the = antifreeze=20 level was now down to about 25/75 and the overnight temps in the low = 20's=20 did the job.
 
I had to concentrate on getting back home for work tomorrow so = I=20 couldn't do much.  I couldn't even take off the lower = cowl.
 
I suspect the radiator is cracked somewhere.  Anyone have = any=20 experience with this sort of thing?  Can this do damage to the = engine=20 block?  The radiator is custom and will not be cheap to = replace, and it=20 will take a while, and the plane is an 8 hour drive away...  = :-(
--
Dave Leonard
Turbo Rotary RV-6 N4VY
http://memb= ers.aol.com/_ht_a/rotaryroster/index.html
http://members= .aol.com/_ht_a/vp4skydoc/index.html=20 

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