X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from outbound-mail.dca.untd.com ([64.136.47.15] verified) by logan.com (CommuniGate Pro SMTP 5.4.1) with SMTP id 5126070 for flyrotary@lancaironline.net; Thu, 15 Sep 2011 17:23:39 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.136.47.15; envelope-from=alwick@juno.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=juno.com; s=alpha; t=1316121785; bh=47DEQpj8HBSa+/TImW+5JCeuQeRkm5NMpJWZG3hSuFU=; l=0; h=Message-ID:From:To:Subject:Date:Content-Type; b=Hr+FUolv9U+NUjv/TCgp+4+zG6W1EPYPrLHx59Y6nYnJDaNGF6zOHV/3WsWILYiO3 JkTrzMc12Xqh7c0pvlvN/tubrTqVl7FCupBMsi9YAyu4f4c8cQM7A5g8qTw9aprUtn 4cH+oIIEJCzZF9oYFxASR9iW5JKNOTpjVH4reyk4= Received: from Penny (50-39-184-136.bvtn.or.frontiernet.net [50.39.184.136]) by smtpout01.dca.untd.com with SMTP id AABHHE5ECAFFH94J for (sender ); Thu, 15 Sep 2011 14:22:10 -0700 (PDT) Message-ID: <97F172770C5345CCAE0DE4ED975E4699@Penny> From: "Al Wick" To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Re: The good news and the bad news...... Date: Thu, 15 Sep 2011 14:22:08 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0322_01CC73B2.D9E18430" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6002.18197 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18463 X-UNTD-BodySize: 10220 X-ContentStamp: 26:13:3456565108 X-MAIL-INFO:33a431f43194ed4094dddd54d1ddc41050c97589e0f96565f08dd02dfd75388d24fded9010497535212131b4eddd89f464a4c4ddf5543041045049d42119c174b5714571a16125559d39380460b9b980d9bdc1f10d0184ad7d211491cd3d44e9adc4d5919099a5e0e5 X-UNTD-OriginStamp: L941HVjjYzDhN3itp//mkAy0yvSuVN6IMqjjwfHYakilzbqJtTSP4g== X-UNTD-Peer-Info: 10.171.42.31|smtpout01.dca.untd.com|smtpout01.dca.untd.com|alwick@juno.com This is a multi-part message in MIME format. ------=_NextPart_000_0322_01CC73B2.D9E18430 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Oh. I can see Bill's concern. It might be interesting to measure with = scope.=20 FWIW, I had toothed wheels cut out with laser cutter years ago. Really = inexpensive. -al ----- Original Message -----=20 From: CozyGirrrl@aol.com=20 To: Rotary motors in aircraft=20 Sent: Thursday, September 15, 2011 2:14 PM Subject: [FlyRotary] Re: The good news and the bad news...... Not side by side- In the placement described we are talking about them facing each other = with a gap between the faces of 0.100~0.125 and the wheel face between = them like an interrupter between optical sense and receive.=20 Chrissi & Randi www.CozyGirrrl.com CG Products, Custom Aircraft Hardware Chairwomen, Sun-N-Fun Engine Workshop In a message dated 9/15/2011 4:01:36 P.M. Central Daylight Time, = alwick@juno.com writes: To: Rotary motors in aircraft Sent: Thu, Sep 15, 2011 17:45:46 GMT+00:00 Subject: [FlyRotary] Re: The good news and the bad news...... On 9/15/2011 1:21 PM, Tracy wrote:=20 The CAS references the crank, not the rotor. =C2 Is that. It? I'm still confused about something myself. Everybody keeps = talking about adding another CAS as requiring it to be "in a different = position", with an offset. My 3rd-gen CAS sits on a small bracket just = behind the toothed wheel on the front shaft. Past that toothed wheel = there's a healthy (from memory: 1.5"?) gap from there to the back of the = alternator pulley. What's to stop me from making a bracket and putting a second CAS = in that gap, facing backward? It would be in exactly the same position = as the current CAS, just facing backward. Would they interfere with one = another? If so, as an alternative, what about using a second toothed = wheel either on top of the first and before the alternator pulley, or if = side loads were a concern, on the very end of the shaft past the pulley? ------=_NextPart_000_0322_01CC73B2.D9E18430 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Oh. I can see Bill's concern. It might be interesting to measure = with=20 scope.
FWIW, I had toothed wheels cut out with laser cutter years ago. = Really=20 inexpensive.
 
-al
----- Original Message -----
From:=20 CozyGirrrl@aol.com
Sent: Thursday, September 15, = 2011 2:14=20 PM
Subject: [FlyRotary] Re: The = good news=20 and the bad news......

Not side by side-
In the placement described we are talking about them facing each = other=20 with a gap between the faces of 0.100~0.125 and the wheel face between = them=20 like an interrupter between optical sense and receive.
 
Chrissi=20 & Randi
www.CozyGirrrl.com
CG = Products, Custom=20 Aircraft Hardware
Chairwomen, Sun-N-Fun Engine Workshop
 
In a message dated 9/15/2011 4:01:36 P.M. Central Daylight Time,=20 alwick@juno.com writes:
<concern is that the two sensors may have = interference with each other.
 
Highly unlikely. I have friends who measure = integrity=20 of signal with oscilloscope. Shielded device with highly directional = sensitivity. Though they've never measured two side by side. Good = theory,=20 though.
 
-al wick
----- Original Message ----- =
From:=20 wrjjrs@aol.com
To: Rotary motors in = aircraft=20
Sent: Thursday, September = 15, 2011=20 12:18 PM
Subject: [FlyRotary] Re: = The good=20 news and the bad news......

There is = nothing=20 wrong with that idea. The only concern is that the two sensors may = have=20 interference with each other. The idea is to put another toothed = wheel=20 rotated say a random 33.715=20 degrees relative to the first wheel. Now you place the second = sensor=20 rotated the same 33.7....etc degrees. So now when you switch = sensors the=20 timing is the same. Also the two sensors don't interfere with each = other.
Bill Jepson

Connected by = DROID on=20 Verizon = Wireless


-----Original=20 message-----
From: = Chad=20 Robinson <crobinson@medialantern.com>
To: Rotary = motors=20 in aircraft <flyrotary@lancaironline.net>
Sent: = Thu, Sep=20 15, 2011 17:45:46 GMT+00:00
Subject: [FlyRotary] Re: = The good=20 news and the bad news......

On 9/15/2011 1:21 PM, = Tracy wrote:=20
The CAS references the crank, = not the=20 rotor. =C2  Is that. It?
I'm still = confused about=20 something myself. Everybody keeps talking about adding another = CAS as=20 requiring it to be "in a different position", with an offset. My = 3rd-gen=20 CAS sits on a small bracket just behind the toothed wheel on the = front=20 shaft. Past that toothed wheel there's a healthy (from memory: = 1.5"?)=20 gap from there to the back of the alternator = pulley.

What's to=20 stop me from making a bracket and putting a second CAS in that = gap,=20 facing backward? It would be in exactly the same position as the = current=20 CAS, just facing backward. Would they interfere with one = another? If so,=20 as an alternative, what about using a second toothed wheel = either on top=20 of the first and before the alternator pulley, or if side loads = were a=20 concern, on the very end of the shaft past the=20 = pulley?

=
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