X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [65.54.250.77] (HELO hotmail.com) by logan.com (CommuniGate Pro SMTP 5.0.9) with ESMTP id 1070692 for flyrotary@lancaironline.net; Mon, 17 Apr 2006 10:24:36 -0400 Received-SPF: pass receiver=logan.com; client-ip=65.54.250.77; envelope-from=lors01@msn.com Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Mon, 17 Apr 2006 07:23:51 -0700 Message-ID: Received: from 4.171.150.191 by BAY115-DAV5.phx.gbl with DAV; Mon, 17 Apr 2006 14:23:48 +0000 X-Originating-IP: [4.171.150.191] X-Originating-Email: [lors01@msn.com] X-Sender: lors01@msn.com From: "Tracy Crook" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] One big problem solved Date: Mon, 17 Apr 2006 10:23:45 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_008F_01C66209.02543AA0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: MSN 9 X-MimeOLE: Produced By MSN MimeOLE V9.20.0026.0800 Seal-Send-Time: Mon, 17 Apr 2006 10:23:45 -0400 X-OriginalArrivalTime: 17 Apr 2006 14:23:51.0634 (UTC) FILETIME=[8CC27320:01C6622A] This is a multi-part message in MIME format. ------=_NextPart_000_008F_01C66209.02543AA0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Glad you found the problem Buly.=20 Before risking a trip near the meat grinder, always try the Mode 8 = ignition timing adjustment. You can move the timing up to + or - 10 = degrees from the comfort of the cockpit. This is enough to indicate = whether more change is necessary. Then you can go adjust the crank = sensor with engine stopped and go back to adjusting from the cockpit. I = would suggest turning the CAS in 10 degree increments. (use the 30 = degree trigger wheel teeth as a guide to how far you are turning the = CAS) Remember to set the timing back to nominal (center of range) in = mode 8 before adjusting the crank sensor.=20 BTW, retarded timing might explain some of the cooling problem as well. Tracy ----- Original Message -----=20 From: Bulent Aliev=20 To: Rotary motors in aircraft=20 Sent: Sunday, April 16, 2006 7:59 PM Subject: [FlyRotary] One big problem solved From the beginning of running the engine with the prop on, I could =20 not pass the 4000 RPM static barrier. First I run it with the prop I =20 made that it is rather large 3 bladed 70" prop. I thought that I was =20 just over proped. John Slade landed me his prop that's smaller =20 diameter 64" and the blades have about 25-30% smaler area surface. =20 Same static performance. I had fuel pressure, manifold pressure all =20 the way to 60", but it will not budge past 4K RPM. So I took to Tracy's manuals. One paragraph mentioned to adjust the =20 timing at 4K RPM with engine and prop running. AHAA! Me and the neighbor made degree wheel and new marks on the pulley per = Tracy's recommendations. Last evening I volunteered my neighbor to do = the timing light magic and move the crank angle sensor on top of the =20 screaming engine and prop, while I was the "throttle man". By 9 PM the engine passed 4700 rpm static and was ready to go =20 further, but the coolant was getting too hot and I ended the =20 experiments. So, if everything else fails you turbo rotary guys, set your timing =20 at 4K RPM static per Tracy's recommendations :) Buly Next problem installment coming.... -- Homepage: http://www.flyrotary.com/ Archive and UnSub: = http://mail.lancaironline.net/lists/flyrotary/ ------=_NextPart_000_008F_01C66209.02543AA0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Glad you found the problem Buly.

Before risking a trip near the meat grinder, always try the Mode 8 = ignition=20 timing adjustment. You can move the timing up to + or - 10 degrees = from=20 the comfort of the cockpit. This is enough to indicate = whether more=20 change is necessary. Then you can go adjust the crank sensor = with=20 engine stopped and go back to adjusting from the cockpit. I would = suggest=20 turning the CAS in 10 degree increments. (use the 30 degree = trigger=20 wheel teeth as a guide to how far you are turning the CAS) = Remember=20 to set the timing back to nominal (center of range) in mode 8 = before=20 adjusting the crank sensor.

BTW, retarded timing might explain some of the cooling problem as=20 well.

Tracy

----- Original Message -----

From: Bulent Aliev

To: Rotary motors in = aircraft

Sent: Sunday, April 16, 2006 = 7:59=20 PM

Subject: [FlyRotary] One big = problem=20 solved

From the beginning of running the engine with the prop = on, I=20 could
not pass the 4000 RPM static barrier. First I run it = with the=20 prop I
made that it is rather large 3 bladed 70" prop. I = thought=20 that I was
just over proped. John Slade landed me his prop = that's=20 smaller
diameter 64" and the blades have about 25-30% smaler = area=20 surface.
Same static performance. I had fuel pressure, = manifold=20 pressure all
the way to 60", but it will not budge past 4K=20 RPM.
So I took to Tracy's manuals. One paragraph mentioned to = adjust=20 the
timing at 4K RPM with engine and prop running. = AHAA!
Me and=20 the neighbor made degree wheel and new marks on the pulley per =20
Tracy's recommendations. Last evening I volunteered my neighbor to = do
the timing light magic and move the crank angle sensor on = top of=20 the
screaming engine and prop, while I was the "throttle = man".
By=20 9 PM the engine passed 4700 rpm static and was ready to go =
further,=20 but the coolant was getting too hot and I ended the =20
experiments.
So, if everything else fails you turbo rotary = guys, set=20 your timing
at 4K RPM static per Tracy's recommendations=20 :)
Buly

Next problem installment=20 coming....

--
Homepage: http://www.flyrotary.com/
Archi= ve and=20 UnSub: http://mail.lanca= ironline.net/lists/flyrotary/

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