X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail10.syd.optusnet.com.au ([211.29.132.191] verified) by logan.com (CommuniGate Pro SMTP 5.2.10) with ESMTPS id 3342468 for flyrotary@lancaironline.net; Mon, 08 Dec 2008 14:59:41 -0500 Received-SPF: pass receiver=logan.com; client-ip=211.29.132.191; envelope-from=lendich@optusnet.com.au Received: from george (d58-105-133-50.dsl.nsw.optusnet.com.au [58.105.133.50]) by mail10.syd.optusnet.com.au (8.13.1/8.13.1) with SMTP id mB8JwvCn026111 for ; Tue, 9 Dec 2008 06:58:58 +1100 Message-ID: From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Update ... Three more flights, water ok, oil too cool Date: Tue, 9 Dec 2008 05:58:58 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0040_01C959C3.3A0AF060" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5512 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 X-Antivirus: avast! (VPS 081208-0, 08/12/2008), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_0040_01C959C3.3A0AF060 Content-Type: text/plain; charset="iso-8859-1" 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 touch and goes then shut everything down and checked under the = cowl . 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 spend less time at full throttle on a touch and go. Some other = numbers of interest, 6300 rpm, 1100 fpm, outside air temp 30F, oil temp = 110F. =20 So I would say that the water cooling system is still not good 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 . put the thermostat back = in, which may help the oil . I don't like the cooling to 150F on = approach, or should I keep the systems separate? Plug the 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) Jeff, Try covering some of the oil radiator with a piece of cardboard. You might find the water temps comes up as well. Adjustable cowl = flaps are the final design answer. George ( down under) =20 ------=_NextPart_000_0040_01C959C3.3A0AF060 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

With=20 thermostat removed, bypass plugged, new accessory belts and alternator = pulley=20 installed, we retested the new rotary = installation.

On=20 first climb out water temperature reached only 195F, compared to 230F = on very=20 first flight a week ago. With the water temperature okay we did 2 = touch and=20 goes then shut everything down and checked under the cowl =85 no = broken belts,=20 no leaks that=92s a relief.

On=20 the subsequent climb outs the water temp was about 185F; on approach = the water=20 cooled to 150F. I guess with the approach momentum you spend less time = at full=20 throttle on a touch and go. Some other numbers of interest, 6300 rpm, = 1100=20 fpm, outside air temp 30F, oil temp 110F.

So=20 I would say that the water cooling system is still not good enough (at = 80F=20 that 195 could go to 245F) on the other hand my oil is too=20 cool.

For=20 present winter operations I=92m wondering =85 put the thermostat back = in, which=20 may help the oil =85 I don=92t like the cooling to 150F on approach, = or should I=20 keep the systems separate? Plug the oil cooler air intakes or outlets? = Or=20 should we first fly at cruise speeds for 10-15 minutes to see how = things=20 stabilize?

Jeff=20 Whaley

(I=20 call it an airplane now)

Jeff,

Try=20 covering some of the oil = radiator with a=20 piece of cardboard.

You=20 might find the water temps comes up as well. = Adjustable cowl=20 flaps are the final design answer.

George=20 ( down under)

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