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X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: <13brv3@bellsouth.net> Received: from imf22aec.mail.bellsouth.net ([205.152.59.70] verified) by logan.com (CommuniGate Pro SMTP 4.3.6) with ESMTP id 220297 for flyrotary@lancaironline.net; Wed, 20 Jul 2005 11:56:34 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.70; envelope-from=13brv3@bellsouth.net Received: from ibm67aec.bellsouth.net ([65.6.194.9]) by imf22aec.mail.bellsouth.net with ESMTP id <20050720155541.STUZ5597.imf22aec.mail.bellsouth.net@ibm67aec.bellsouth.net> for ; Wed, 20 Jul 2005 11:55:41 -0400 Received: from rd ([65.6.194.9]) by ibm67aec.bellsouth.net with ESMTP id <20050720155540.QZRM11059.ibm67aec.bellsouth.net@rd> for ; Wed, 20 Jul 2005 11:55:40 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Evans Coolant Date: Wed, 20 Jul 2005 10:55:39 -0500 Message-ID: <000601c58d43$7aa1da80$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0007_01C58D19.91CBD280" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2527 This is a multi-part message in MIME format. ------=_NextPart_000_0007_01C58D19.91CBD280 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit 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. The Evan's should run hotter than water, but I'm hoping you find the difference to be 20, not 40 degrees. I would never increase a cooling system just to use Evan's, but since I had extra capacity, it's working great for me. 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? As Buly mentioned, the rotation is different, but you did want a new prop anyway right? The biggest problem is the thrust offset. If your current mount offsets the prop to the left, then switching to a -C drive will be somewhat of a problem. On the RV-3, it was a hand (and foot) full on takeoff when I changed to the -C drive. Now that I shimmed the mount back to zero offset, it's a pussycat. Of course you realize what's involved in changing the mount angle... Since you're determined to make the turbo work, you can get about as much power as you want that way, so I'm not sure I'd bother with the new drive. I'm still hoping that I can get a significant improvement in power with the new intake, so I won't have to pursue the turbo again. Cheers, Rusty (starting to enjoy the continuous sound of chainsaws) ------=_NextPart_000_0007_01C58D19.91CBD280 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

I have not completely given up on the Evans. Best I can tell=20 my temps are 20-40 deg warmer with the evans but that is really = hard to=20 tell because I only have 2 brief flights with water and the = new=20 intake.

The Evan's=20 should run hotter than water, but I'm hoping you find the difference to = be 20,=20 not 40 degrees. I would never increase a cooling system just to = use=20 Evan's, but since I had extra capacity, it's working great for me. =

The big question is: since the drive is going back to Tracy soon, = should I=20 switch to the RD-1C or stick with the B-model?

As Buly=20 mentioned, the rotation is different, but you did want a new prop anyway = right? The biggest problem is the thrust offset. = If your=20 current mount offsets the prop to the left, then switching to a -C=20 drive will be somewhat of a problem. On the RV-3, = it was a=20 hand (and foot) full on takeoff when I changed to the -C drive. = Now that I=20 shimmed the mount back to zero offset, it's a pussycat. = Of=20 course you realize what's involved in changing the mount=20 angle...

Since you're=20 determined to make the turbo work, you can get about as much power as = you want=20 that way, so I'm not sure I'd bother with the new drive. I'm=20 still hoping that I can get a significant improvement in power with = the new=20 intake, so I won't have to pursue the turbo=20 again.

Cheers,

Rusty=20 (starting to enjoy the continuous sound of=20 chainsaws)

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