X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fmailhost04.isp.att.net ([207.115.11.54] verified) by logan.com (CommuniGate Pro SMTP 5.4.5) with ESMTP id 5513177 for flyrotary@lancaironline.net; Sat, 28 Apr 2012 08:35:19 -0400 Received-SPF: none receiver=logan.com; client-ip=207.115.11.54; envelope-from=bbradburry@bellsouth.net Received: from desktop (adsl-98-85-145-153.mco.bellsouth.net[98.85.145.153]) by isp.att.net (frfwmhc04) with SMTP id <20120428123441H0400b6a01e>; Sat, 28 Apr 2012 12:34:42 +0000 X-Originating-IP: [98.85.145.153] From: "Bill Bradburry" To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: RE: [FlyRotary] Re: Hiccup Date: Sat, 28 Apr 2012 08:34:41 -0400 Message-ID: <65B903864A414D1785C4B793B29F22B6@Desktop> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0000_01CD2519.C2355E60" X-Mailer: Microsoft Office Outlook 11 Thread-Index: Ac0kvcxhuq3CRVWjRc+uebQZs9CP4wAfO5Ug X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18463 This is a multi-part message in MIME format. ------=_NextPart_000_0000_01CD2519.C2355E60 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit The hiccup is like a backfire. It really shakes the engine. You can feel it thru the airframe. But it is quick, like it was a single event. BUP! Then it is smooth again for a minute or two. Much closer together if you are in a powered decent. Bill _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Tracy Sent: Friday, April 27, 2012 5:36 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Hiccup Don't know about the hiccup but you can easily calibrate the airspeed. Go to calibration screen for TAS, adjust the sensor offset parameter to one less than the current ADC reading. Do this at zero airspeed of course. Tracy Sent from my iPad On Apr 27, 2012, at 2:58 PM, "Bill Bradburry" wrote: I am experiencing an occasional hiccup while in cruise and more often during a decent under power. I am pretty certain that I saw a comment on this previously from Tracy but I have not been able to find it. Can someone set me straight on what to do about this? My mixture graph is not working and I will be sending the EM-2 to Tracy as soon as he returns from Colorado. I also show a true airpspeed of 22 mph in the hangar and it seems to be about that much or a little more in error in cruise. I don't think I can calibrate this item? Bill B ------=_NextPart_000_0000_01CD2519.C2355E60 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

The hiccup is like a = backfire. It really shakes the engine. You can feel it thru the airframe. But it = is quick, like it was a single event. BUP! Then it is smooth again for a minute or = two. Much closer together if you are in a powered decent.

Bill

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Tracy
Sent: Friday, April 27, = 2012 5:36 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = Hiccup

Don't know = about the hiccup but you can easily calibrate the airspeed. Go to = calibration screen for TAS, adjust the sensor offset parameter to one less than the = current ADC reading. Do this at zero airspeed of = course.

Tracy
= Sent from my iPad

On Apr 27, 2012, at 2:58 PM, "Bill Bradburry" <bbradburry@bellsouth.net>= wrote:

I am experiencing an occasional hiccup while in cruise = and more often during a decent under power. I am pretty certain that I = saw a comment on this previously from Tracy but I have not been able to find it. Can someone set me straight = on what to do about this?

My mixture graph is not working and = I will be sending the EM-2 to Tracy as soon as he returns from Colorado.&nbs= p; I also show a true airpspeed of 22 mph in the hangar and it seems to be = about that much or a little more in error in cruise. I don’t think = I can calibrate this item?

Bill = B

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