X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [24.25.9.102] (HELO ms-smtp-03-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.3.6) with ESMTP id 620472 for flyrotary@lancaironline.net; Sun, 31 Jul 2005 08:35:31 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.102; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-065-188-083-049.carolina.res.rr.com [65.188.83.49]) by ms-smtp-03-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id j6VCYgY5012403 for ; Sun, 31 Jul 2005 08:34:45 -0400 (EDT) Message-ID: <000d01c595cc$424803d0$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] complete loss of coolant? Date: Sun, 31 Jul 2005 08:34:56 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000A_01C595AA.BADBC0B0" 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 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_000A_01C595AA.BADBC0B0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MessageHi Rusty, There have been two cases I am aware of where the coolant system was = impaired. One was Ron Gowans Long EZ when he lost coolant (heard second = hand) and Jim Mosur when he had both belts pop off the water pump = pulley. In both cases, the engine temps went off the scale, there was = the odor of overheated metal and oil and a bit of smoke/steam. However, = in both cases the engines continued to run and got pilot and aircraft = safely to an airport. Jim flew his for approx 10 minutes to an airport and then had to make a = go-a-round when a non-radio equipped aircraft took off as he was = preparing to land. Landed successfully. Next morning when He = discovered that when he went to replenish the lost coolant that the = engine leaked like a sieve. All the coolant "O" rings (and anything = else rubber) was shot. =20 He ended up rebuilding the engine - don't know what he had to replace - = seems like it was the housings - perhaps due to warping, but I think = the rotors were reused. =20 With the rotors being of an iron alloy spinning in an aluminum housing, = its unlikely the engine would seize (unlike aluminum pistons in an iron = sleeve) and it been reported that you loose a bit of compression and = power (presumably because the aluminum housing expands). I can provide you Jim's e mail address if you want to get the story = straight from him. Ed A ----- Original Message -----=20 From: Russell Duffy=20 To: Rotary motors in aircraft=20 Sent: Saturday, July 30, 2005 5:56 PM Subject: [FlyRotary] complete loss of coolant? Greetings,=20 We've established what happens if the engine runs out of oil. What = about coolant? If the system sprang a leak, and you continued to run at = cruise power, will it eventually seize, similar to the oil out? I = can't say I've heard of that happening, but most people probably quit = before they get to that point. I'm thinking it would seize though. =20 The reason I'm wondering has to do with thoughts of a backup water = pump. I'll almost certainly use only the DC EWP on the single rotor, = but I'm wondering if a second one is needed. I could live with the loss = of the engine due to warping, if it didn't cause it to seize in short = order. =20 Cheers, Rusty (ports, and more ports)=20 ------=_NextPart_000_000A_01C595AA.BADBC0B0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message
Hi Rusty,
 
There have been two cases I am aware of where = the coolant=20 system was impaired. One was Ron Gowans Long EZ when he lost coolant = (heard=20 second hand) and Jim Mosur when he had both belts pop off the water pump = pulley.  In both cases, the engine temps went off the scale, there = was the=20 odor of overheated metal and oil and a bit of smoke/steam.  = However, in=20 both cases the engines continued to run and got pilot and aircraft = safely to an=20 airport.
 
Jim flew his for approx 10 minutes to an airport = and then=20 had to make a go-a-round when a non-radio equipped aircraft took off as = he was=20 preparing to land.  Landed successfully.  Next morning when He = discovered that when he went to replenish the lost coolant that the = engine=20 leaked like a sieve.  All the coolant "O" rings (and anything else = rubber)=20 was shot. 
 
He ended up rebuilding the engine - don't know = what he had=20 to replace - seems like it was the housings - perhaps due to warping, =  but=20 I think the rotors were reused. 
 
With the rotors being of an iron alloy spinning = in an=20 aluminum housing, its unlikely the engine would seize (unlike aluminum = pistons=20 in an iron sleeve) and it been reported that you loose a bit of = compression and=20 power (presumably because the aluminum housing expands).
 
I can provide you Jim's e mail address if you = want to get=20 the story straight from him.
 
Ed A
 
----- Original Message -----
From:=20 Russell=20 Duffy
Sent: Saturday, July 30, 2005 = 5:56=20 PM
Subject: [FlyRotary] complete = loss of=20 coolant?

Greetings, 
 
We've = established what=20 happens if the engine runs out of oil.   What = about coolant?  If the system sprang = a leak,=20 and you continued to run at cruise power,  will it eventually = seize,=20 similar to the oil out?  I can't say I've heard of that = happening, but=20 most people probably quit before they get to that point.  I'm = thinking it=20 would seize though.  
 
The reason = I'm wondering=20 has to do with thoughts of a backup water pump.  I'll almost = certainly=20 use only the DC EWP on the single =20 rotor, but I'm wondering if a second one is needed.  I = could live=20 with the loss of the engine = due to=20 warping, if it didn't cause it to seize in short order. =20
 
Cheers,
Rusty  (ports, and more=20 ports) 
 
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