Return-Path: Received: from [24.25.9.101] (HELO ms-smtp-02-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 2971115 for flyrotary@lancaironline.net; Mon, 02 Feb 2004 13:37:00 -0500 Received: from edward (clt78-020.carolina.rr.com [24.93.78.20]) by ms-smtp-02-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id i12Iauq4011676 for ; Mon, 2 Feb 2004 13:36:58 -0500 (EST) Message-ID: <000a01c3e9bb$89d723c0$2402a8c0@edward> From: "Ed Anderson" To: "Rotary motors in aircraft" Subject: Linear Position Transducer? Date: Mon, 2 Feb 2004 13:36:57 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0007_01C3E991.A09D02C0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1158 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0007_01C3E991.A09D02C0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Guys,=20 I am finishing up the design and fabrication of my variable length = EDDIE intake and need some assistance. I want to use a voltmeter (or = LEDs) to indicate the postion of the manifold. The simplist approach = would appear to have a linear resistor attached such that its arm is = moved as the manifold moves thereby changing the resistance indicating = distance. =20 I've done a lot of Web surfing and found a number of linear postion = potentiometers. The problem is they cost more than I have invested in = the manifold. Regular audio linear potentiometers do not have the = mechanical range I need. I need a position indictor that has at least 5 = 1/2 - 6" of travel. Anyone have any ideal where something reasonably = priced might be found. =20 If you know of a retail catalog that have such things I'd appreciate a = pointer. I can find plenty of Linear Postion Potentiometers - but they = cost in the hunderds of $$. Need something much cheaper. =20 I know I could devise a 3:1 lever ratio or some such thing and use one = of the cheap (but mechanically range restricted) linear potentiometers = for audio circuits, but would rather not. Thanks Ed Anderson RV-6A N494BW Rotary Powered Matthews, NC ------=_NextPart_000_0007_01C3E991.A09D02C0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Hi Guys,

I am finishing up = the design and=20 fabrication of my variable length EDDIE intake and need some = assistance. I=20 want to use a voltmeter (or LEDs) to indicate the postion of the = manifold. =20 The simplist approach would appear to have a linear resistor attached = such that=20 its arm is moved as the manifold moves thereby changing the resistance=20 indicating distance.

I've done a lot of Web surfing and = found a number=20 of linear postion potentiometers. The problem is they cost more = than I=20 have invested in the manifold. Regular audio linear potentiometers = do not=20 have the mechanical range I need. I need a position indictor that = has at=20 least 5 1/2 - 6" of travel. Anyone have any ideal where something=20 reasonably priced might be found.

If you know of a retail catalog = that have=20 such things I'd appreciate a pointer. I can find plenty of Linear = Postion=20 Potentiometers - but they cost in the hunderds of $$. Need = something much=20 cheaper.

I know I could devise a 3:1 lever ratio = or some=20 such thing and use one of the cheap (but mechanically range restricted) = linear=20 potentiometers for audio circuits, but would rather not.

Thanks

Ed Anderson
RV-6A N494BW Rotary=20 Powered
Matthews, NC

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