X-Virus-Scanned: clean according to Sophos on Logan.com From: "Richard Van Camp" Received: from nm15.bullet.mail.bf1.yahoo.com ([98.139.212.174] verified) by logan.com (CommuniGate Pro SMTP 6.1.2) with ESMTPS id 7696252 for flyrotary@lancaironline.net; Sat, 16 May 2015 18:30:59 -0400 Received-SPF: none receiver=logan.com; client-ip=98.139.212.174; envelope-from=ravancamp@att.net DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=att.net; s=s1024; t=1431815423; bh=qs83++Z9azJ+fCpsZ8/hGScympRQY73Nns6fFnPaSkw=; h=Date:From:Reply-To:To:Subject:From:Subject; b=1flbtlFdP9HqTk1LHogZdhGeyqHsXQhF4sff164EYBF4eau9lBhGrwzONbaW3i3E67royUOKurFnQBDlFY0txMUJ+TqMA0ND3Xh14wqYgasHQPtrvoweaMgE0n/Hmi96aAHx5ikUMBydhAj14q83tZSiCbKay2fWogIopkkbVc8= Received: from [66.196.81.174] by nm15.bullet.mail.bf1.yahoo.com with NNFMP; 16 May 2015 22:30:23 -0000 Received: from [98.139.212.222] by tm20.bullet.mail.bf1.yahoo.com with NNFMP; 16 May 2015 22:30:23 -0000 Received: from [127.0.0.1] by omp1031.mail.bf1.yahoo.com with NNFMP; 16 May 2015 22:30:23 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 249360.41773.bm@omp1031.mail.bf1.yahoo.com X-YMail-OSG: PJs2ObwVM1maDP50pYHehl0qza5rUwTLWV5tMK_BIs54TG4C9Xx68lFXdTYZh59 JmPZq2oxNSAHNRkEn3q2IfPHVHbi6z07l6n0pFMpO.kgcMHavwym5wWTrxyGKW_yAX4ts.UIWCPM jSeo3PR1c6AgjlM4gnPH.JMLrdOOv9hn4kKPspHi09MquP7ailMHzyA5BxqCBf5FIr9tlbTafzqS i6lS.9YbeEJrpJLCE_1h_2DrllDZhL5lI348zRkBegBRVErQoW_SwXiYAzQIHPasPAFtD6vZP7cC el8aeNBxnktOeImFlzVKLirQ8zcDpWw4K4TicJb74VLEhJ82JUr.aEnHA0i3bChTFZY5KTF31jVq 8umo1nRXlNOHN8lybYZNku6MaXCPHD3JahyXkgSsdViq7MrvisX4bpICOh87c_Slv__3ZQ3aMMHf GpXEvbIPNPAR9pqhA1134_xq.MTfduuL8fRVV8Riw4VDkuweaYYulGwP1gz3thCg4QoeTWrIuXaE l06M- Received: by 76.13.27.132; Sat, 16 May 2015 22:30:22 +0000 Date: Sat, 16 May 2015 22:30:22 +0000 (UTC) Reply-To: Richard Van Camp To: "flyrotary@lancaironline.net" Message-ID: <1768752015.390313.1431815422397.JavaMail.yahoo@mail.yahoo.com> Subject: Engine Cooling - Airframe Specific & PSRU MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_390312_787204823.1431815422394" Content-Length: 3141 ------=_Part_390312_787204823.1431815422394 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable These cooling issues are not trivial to overcome and I am getting concerned= if the rotary/PSRU is the right choice for me to make. =C2=A0Do not get me= wrong, I love the powerplant. =C2=A0How can you not? =C2=A0These integrati= on issues are not simple to conquer. =C2=A0How many robust aircraft are cur= rently flying? =C2=A0What aircraft are these? =C2=A0Most members here are b= uilding or flying aircraft that will fly circles around the small 4-passeng= er tail dragger I plan to build. =C2=A0In contrast you have far greater air= speeds to cool a captive volume of water than my 100-125 knots. =C2=A0Yet,= I suspect I have more free volume to work with than the streamlined shape = of the Lancair or Velocity. I also wanted to ask about the PSRU. =C2=A0Have Tracey's efforts stood the = test of time? =C2=A0It seemed to have some useful features but, the PSRU ca= n be a source of challenges as well. =C2=A0I noticed the Cozy Girls have pa= ssed this on but, have not remained on radar consistently to determine what= its fate will be. Rick ------=_Part_390312_787204823.1431815422394 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable

These cooling issues are not trivial= to overcome and I am getting concerned if the rotary/PSRU is the right cho= ice for me to make. Do not get me wrong, I love the powerplant. = ;How can you not? These integration issues are not simple to conquer.= How many robust aircraft are currently flying? What aircraft a= re these? Most members here are building or flying aircraft that will= fly circles around the small 4-passenger tail dragger I plan to build. &nb= sp;In contrast you have far greater air speeds to cool a captive volume of = water than my 100-125 knots. Yet, I suspect I have more free volume t= o work with than the streamlined shape of the Lancair or Velocity.

I also wanted to ask about the = PSRU. Have Tracey's efforts stood the test of time? It seemed t= o have some useful features but, the PSRU can be a source of challenges as = well. I noticed the Cozy Girls have passed this on but, have not rema= ined on radar consistently to determine what its fate will be.

Rick

<= /body> ------=_Part_390312_787204823.1431815422394--