X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 21 Nov 2008 18:27:40 -0500 Message-ID: X-Original-Return-Path: Received: from smtp-ext-04.mx.pitdc1.expedient.net ([206.210.69.144] verified) by logan.com (CommuniGate Pro SMTP 5.2.10) with ESMTPS id 3310550 for lml@lancaironline.net; Fri, 21 Nov 2008 07:53:38 -0500 Received-SPF: none receiver=logan.com; client-ip=206.210.69.144; envelope-from=rpastusek@htii.com Received: from dlhtpax009 (unknown [65.202.210.118]) by smtp-ext-04.mx.pitdc1.expedient.net (Postfix) with ESMTPA id 7904DE467D for ; Fri, 21 Nov 2008 07:53:01 -0500 (EST) Reply-To: From: "Robert Pastusek" X-Original-To: "'Lancair Mailing List'" References: In-Reply-To: Subject: RE: [LML] Counterweighted MT prop issues X-Original-Date: Fri, 21 Nov 2008 07:52:18 -0500 Organization: Holmes-Tucker International, Inc. X-Original-Message-ID: <042a01c94bd7$feb0a0d0$fc11e270$@com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_042B_01C94BAE.15DDA610" X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: AclKoas/qb0OUBQQRkapdhuY4I28BgA46mjA Content-Language: en-us This is a multipart message in MIME format. ------=_NextPart_000_042B_01C94BAE.15DDA610 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Dan Ballin wrote: Anyone out there running into problems with governor being able to keep up RPM on a counterweighted MT prop using the MT governor? . Dan, I have an MT 4-blade and MT governor on my TSIO-550E/ Lancair IV-P. The prop governor was very fast acting when changed with the pitch control. Not really a problem, but after just a few hours during test flying, I could feel a steady surge in the airframe during cruise flight. This did not show on any of the MVP-50 engine monitored functions. I called MT and they asked me to return the governor for mod. They did this in a 3-4 day turnaround and it's worked flawlessly since. I did not inquire as to the specific mod they made, but it at least included some type of flow restrictor on the pitch change regulator, as it operates more like a Hartzell prop now during prop cycles. and no more surging at all. Suggest you give Sara Denton or Jurgen Zahner a call at (386) 736-7762 in FL. They were most helpful to me. BOB ------=_NextPart_000_042B_01C94BAE.15DDA610 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Dan Ballin wrote:

Anyone out there running into problems with = governor being able to keep up RPM on a counterweighted MT prop using the MT = governor?  …

 

Dan,

I have an MT 4-blade and MT governor on my TSIO-550E/ = Lancair IV-P. The prop governor was very fast acting when changed with the pitch = control. Not really a problem, but after just a few hours during test flying, I = could feel a steady surge in the airframe during cruise flight. This did not = show on any of the MVP-50 engine monitored functions. I called MT and they asked me = to return the governor for mod. They did this in a 3-4 day turnaround and = it’s worked flawlessly since. I did not inquire as to the specific mod they = made, but it at least included some type of flow restrictor on the pitch = change regulator, as it operates more like a Hartzell prop now during prop cycles… = and no more surging at all.

 

Suggest you give Sara Denton or Jurgen Zahner a call at = (386) 736-7762 in FL. They were most helpful to me.


BOB

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