X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imf18aec.mail.bellsouth.net ([205.152.59.66] verified) by logan.com (CommuniGate Pro SMTP 4.3.6) with ESMTP id 220270 for flyrotary@lancaironline.net; Wed, 20 Jul 2005 11:28:43 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.66; envelope-from=atlasyts@bellsouth.net Received: from ibm59aec.bellsouth.net ([68.213.226.209]) by imf18aec.mail.bellsouth.net with ESMTP id <20050720152748.MXQU16359.imf18aec.mail.bellsouth.net@ibm59aec.bellsouth.net> for ; Wed, 20 Jul 2005 11:27:48 -0400 Received: from [192.168.0.104] (really [68.213.226.209]) by ibm59aec.bellsouth.net with ESMTP id <20050720152748.IWUI1678.ibm59aec.bellsouth.net@[192.168.0.104]> for ; Wed, 20 Jul 2005 11:27:48 -0400 User-Agent: Microsoft-Entourage/11.1.0.040913 Date: Wed, 20 Jul 2005 11:27:45 -0400 Subject: Re: [FlyRotary] Evans Coolant From: Bulent Aliev To: Rotary motors in aircraft Message-ID: In-Reply-To: Mime-version: 1.0 Content-type: multipart/alternative; boundary="B_3204703667_473395" > This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --B_3204703667_473395 Content-type: text/plain; charset="ISO-8859-1" Content-transfer-encoding: quoted-printable On 7/20/05 9:10 AM, "David Leonard" wrote: >=20 >=20 > On 7/19/05, Al Gietzen wrote: >> Dave; =20 >>=20 >> At some point you might share your observations of Evans coolant vs wate= r, >> and why you switched back. >>=20 >> =20 >=20 > I have not completely given up on the Evans. Best I can tell my temps ar= e > 20-40 deg warmer with the evans but that is really hard to tell because I= only > have 2 brief flights with water and the new intake. There are a lot of > confounding variables and my temp sensor only has a resolution of 10 deg = C. > With the Evans I saw cruise temps of 230, climb temps of 250. No apparen= t ill > effects from those temps > =20 > I switched back to water to eliminate the evans as a possible cause for t= his > loss of power thing I have been experiencing. I still attribute it to > compressor surge except for the fact that coolant temp seems to play a ro= le. > Although it is still there, I did see an improvement in my last brief fli= ght > but I attribute that to opening up the waste gate rather than the switch = back > to water.=20 > =20 > I kept the evans and will probably put it back in this winter after some = more > experience with the water and new set up. > =20 > The big question is: since the drive is going back to Tracy soon, should = I > switch to the RD-1C or stick with the B-model? > =20 The B model also will require a new prop since the rotation is reversed. I=B9= m tempted to take off the waste gate on my stock turbo? Buly --B_3204703667_473395 Content-type: text/html; charset="ISO-8859-1" Content-transfer-encoding: quoted-printable Re: [FlyRotary] Evans Coolant On 7/= 20/05 9:10 AM, "David Leonard" <wdleonard@gmail.com> wrote:<= BR>


On 7/19/05, Al Gietzen <ALVentures@cox.net> wrote:
Dave;  

At some point you might share your observations of Ev= ans coolant vs water, and why you switched back.



I have not completely given up on the Evans.  Best I can tell my temps= are 20-40 deg warmer with the evans but that is really hard to tell because= I only have 2 brief flights with water and the new intake.  There are = a lot of confounding variables and my temp sensor only has a resolution of 1= 0 deg C.  With the Evans I saw cruise temps of 230, climb temps of 250.=  No apparent ill effects from those temps  
 
I switched back to water to eliminate the evans as a possible cause for thi= s loss of power thing I have been experiencing.  I still attribute it t= o compressor surge except for the fact that coolant temp seems to play a rol= e.  Although it is still there, I did see an improvement in my last bri= ef flight but I attribute that to opening up the waste gate rather than the = switch back to water.
 
I kept the evans and will probably put it back in this winter after some mo= re experience with the water and new set up.
 
The big question is: since the drive is going back to Tracy soon, should I = switch to the RD-1C or stick with the B-model?
 

The B model also will require a new prop since the rotation is reversed. I&= #8217;m tempted to take off the waste gate on my stock turbo?
Buly
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