X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from EXHUB003-3.exch003intermedia.net ([207.5.74.110] verified) by logan.com (CommuniGate Pro SMTP 5.2.10) with ESMTPS id 3341580 for flyrotary@lancaironline.net; Mon, 08 Dec 2008 08:24:36 -0500 Received-SPF: none receiver=logan.com; client-ip=207.5.74.110; envelope-from=jwhaley@datacast.com Received: from EXVMBX003-5.exch003intermedia.net ([207.5.74.45]) by EXHUB003-3.exch003intermedia.net ([207.5.74.110]) with mapi; Mon, 8 Dec 2008 05:23:58 -0800 From: Jeff Whaley To: Rotary motors in aircraft Date: Mon, 8 Dec 2008 05:23:59 -0800 Subject: [FlyRotary] Update ... Three more flights, water ok, oil too cool Thread-Topic: [FlyRotary] Update ... Three more flights, water ok, oil too cool Thread-Index: AclYawAA9szJtwR6Rfy4JyD83rGgYwAyGSbA Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: multipart/alternative; boundary="_000_C03ABB0A7362B84BB53D544B3C305E0ED132DC57CDEXVMBX0035exc_" MIME-Version: 1.0 --_000_C03ABB0A7362B84BB53D544B3C305E0ED132DC57CDEXVMBX0035exc_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable With thermostat removed, bypass plugged, new accessory belts and alternator= pulley installed, we retested the new rotary installation. On first climb out water temperature reached only 195F, compared to 230F on= very first flight a week ago. With the water temperature okay we did 2 tou= ch and goes then shut everything down and checked under the cowl ... no bro= ken belts, no leaks that's a relief. On the subsequent climb outs the water temp was about 185F; on approach the= water cooled to 150F. I guess with the approach momentum you spend less ti= me at full throttle on a touch and go. Some other numbers of interest, 6300= rpm, 1100 fpm, outside air temp 30F, oil temp 110F. So I would say that the water cooling system is still not good enough (at 8= 0F that 195 could go to 245F) on the other hand my oil is too cool. For present winter operations I'm wondering ... put the thermostat back in,= which may help the oil ... I don't like the cooling to 150F on approach, o= r should I keep the systems separate? Plug the oil cooler air intakes or ou= tlets? Or should we first fly at cruise speeds for 10-15 minutes to see how= things stabilize? Jeff Whaley (I call it an airplane now) --_000_C03ABB0A7362B84BB53D544B3C305E0ED132DC57CDEXVMBX0035exc_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

With thermostat removed, bypass plugged, new accessory belts= and alternator pulley installed, we retested the new rotary installation.<= /o:p>

On first climb out water temperature reached only 195F, comp= ared to 230F on very first flight a week ago. With the water temperature okay we= did 2 touch and goes then shut everything down and checked under the cowl ̷= 0; no broken belts, no leaks that’s a relief.

On the subsequent climb outs the water temp was about 185F; = on approach the water cooled to 150F. I guess with the approach momentum you s= pend less time at full throttle on a touch and go. Some other numbers of interes= t, 6300 rpm, 1100 fpm, outside air temp 30F, oil temp 110F.<= /p>

 

So I would say that the water cooling system is still not go= od enough (at 80F that 195 could go to 245F) on the other hand my oil is too cool.

For present winter operations I’m wondering … pu= t the thermostat back in, which may help the oil … I don’t like t= he cooling to 150F on approach, or should I keep the systems separate? Plug th= e oil cooler air intakes or outlets? Or should we first fly at cruise speeds = for 10-15 minutes to see how things stabilize?

Jeff Whaley

(I call it an airplane now)

 

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