X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 12 Aug 2010 16:44:58 -0400 Message-ID: X-Original-Return-Path: Received: from hrndva-omtalb.mail.rr.com ([71.74.56.122] verified) by logan.com (CommuniGate Pro SMTP 5.3.8) with ESMTP id 4428575 for lml@lancaironline.net; Thu, 12 Aug 2010 15:13:36 -0400 Received-SPF: none receiver=logan.com; client-ip=71.74.56.122; envelope-from=Wolfgang@MiCom.net X-Original-Return-Path: X-Authority-Analysis: v=1.1 cv=lkxCD/5/46GCnpIirYorSQYl6SFYRu3AvdhUIdWuqHk= c=1 sm=0 a=MHZY6FYWMEQOp7S43i2QIw==:17 a=84aR13__AAAA:8 a=Ia-xEzejAAAA:8 a=C_IRinGWAAAA:8 a=yT1X4nrGyMZTJMloaEgA:9 a=DDbnRzw39InqRU8SKPZ73RdoEWYA:4 a=wPNLvfGTeEIA:10 a=CVU0O5Kb7MsA:10 a=Pn-vBCPl5NIA:10 a=EzXvWhQp4_cA:10 a=si9q_4b84H0A:10 a=ZNdHoWfL0QLizii-:21 a=2_TOiELJlW6yavVH:21 a=YNJPTXmruI4v1UAhcJ0A:9 a=Ki6FRRj73sBRpVjxh9cA:7 a=qCxb9IY5uEWFiwmrHtdWaR82jlcA:4 a=MHZY6FYWMEQOp7S43i2QIw==:117 X-Cloudmark-Score: 0 X-Originating-IP: 74.218.201.50 Received: from [74.218.201.50] ([74.218.201.50:3181] helo=Lobo) by hrndva-oedge04.mail.rr.com (envelope-from ) (ecelerity 2.2.2.39 r()) with ESMTP id 2D/97-10822-DB7446C4; Thu, 12 Aug 2010 19:13:01 +0000 X-Original-Message-ID: <000901cb3a52$6065e190$6401a8c0@Lobo> From: "Wolfgang" X-Original-To: Subject: Re: [LML] Re: Prop Balance X-Original-Date: Thu, 12 Aug 2010 15:12:58 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0006_01CB3A30.D9164E30" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_0006_01CB3A30.D9164E30 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Or put a silicon filled balance ring at the prop hub :-) Wolfgang -------------------------------------------------------------------------= ------- From: "Kent" =20 Sender: =20 Subject: Re: [LML] Re: Prop Balance=20 Date: Thu, 12 Aug 2010 14:28:09 -0400=20 To: lml@lancaironline.net=20 =20 =20 Vibration sensor is placed on engine to measure how engine is = moving in space. Prop imbalance will make engine move in bigger circle. So mayny Millivolts are genrated per vibration severity. Relative location of heavy spot is signaled by photo cell, or = strobe light flash as heavy spot passes and polarity changes. Up-down = =3D plus-minus. The prop's static weigh slugs can be adjusted or large area = washers can be bolted to spinner bulkhead to counterbalance the heavy = spot. How much depends weigh depends on how much imbalance there was to = begin with. Common to have 10-30 grams of weight for a momento of 100-200 inch = pounds. Kent Felkins Tulsa Oklahoma ----- Original Message ----- From: "Greenbacks, UnLtd." = To: Sent: Thursday, August 12, 2010 7:20 AM Subject: [LML] Re: Prop Balance Could one of you describe the process of dynamically balancing a typical prop? My old brain cannot visualize how weights are attached. Angier Ames N4ZQ -- For archives and unsub = http://mail.lancaironline.net:81/lists/lml/List.html =20 ------=_NextPart_000_0006_01CB3A30.D9164E30 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Or put a silicon filled balance ring at = the prop=20 hub :-)

Wolfgang

lml@lancaironline.net

From:	"Kent"=20 <kent@tulsaconnect.com>
Sender:	<marv@lancaironline.net>
Subject:	Re: [LML] Re: Prop = Balance
Date:	Thu, 12 Aug 2010 14:28:09 = -0400
To:

Vibration sensor is placed on engine to = measure=20 how engine is moving in space. Prop imbalance will make engine = move in=20 bigger circle. So mayny Millivolts are genrated per vibration=20 severity. Relative location of heavy spot is signaled = by=20 photo cell, or strobe light flash as heavy spot passes and = polarity=20 changes. Up-down =3D plus-minus. The prop's static = weigh slugs=20 can be adjusted or large area washers can be bolted to spinner = bulkhead to=20 counterbalance the heavy spot. How much depends weigh = depends on=20 how much imbalance there was to begin with. Common to have = 10-30=20 grams of weight for a momento of 100-200 inch = pounds. Kent=20 Felkins Tulsa Oklahoma ----- Original Message ----- = From:=20 "Greenbacks, UnLtd." <N4ZQ@comcast.net> To:=20 <lml@lancaironline.net> Sent: Thursday, August 12, 2010 = 7:20=20 AM Subject: [LML] Re: Prop Balance Could one of you describe the process of = dynamically=20 balancing a typical prop? My old brain cannot visualize = how=20 weights are attached. Angier = Ames N4ZQ -- For=20 archives and unsub http://mail.lancaironline.net:81/lists/lml/List.html

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