X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fmailhost01.isp.att.net ([204.127.217.101] verified) by logan.com (CommuniGate Pro SMTP 5.2.6) with ESMTP id 3070194 for flyrotary@lancaironline.net; Sun, 10 Aug 2008 18:20:08 -0400 Received-SPF: none receiver=logan.com; client-ip=204.127.217.101; envelope-from=keltro@att.net Received: from fwebmail10.isp.att.net ([207.115.11.160]) by isp.att.net (frfwmhc01) with SMTP id <20080810221930H0100m6m5ae>; Sun, 10 Aug 2008 22:19:30 +0000 X-Originating-IP: [207.115.11.160] Received: from [63.25.216.167] by fwebmail10.isp.att.net; Sun, 10 Aug 2008 22:19:29 +0000 From: "Kelly Troyer" To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Fan switch Date: Sun, 10 Aug 2008 22:19:29 +0000 Message-Id: <081020082219.2426.489F69710001D7AF0000097A22230647029B0A02D29B9B0EBF019D9B040A05@att.net> In-Reply-To: X-Mailer: AT&T Message Center Version 1 (Jul 16 2008) X-Authenticated-Sender: a2VsdHJvQGF0dC5uZXQ= MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="NextPart_Webmail_9m3u9jl4l_2426_1218406769_0" --NextPart_Webmail_9m3u9jl4l_2426_1218406769_0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Thanks Lynn !! -- Kelly Troyer=20 "Dyke Delta"_13B ROTARY Engine=20 "RWS"_RD1C/EC2/EM2=20 "Mistral"_Backplate/Oil Manifold=20 -------------- Original message from "Lynn Hanover" : = --------------=20 In a message dated 8/10/2008 9:49:55 A.M. Eastern Daylight Time, keltro@att= .net writes: Steve, I believe it was Lynn Hanover that said if you connect the power leads (+ & - ) together when fan is not powered that it will not freewheel in fli= ght. Jump in here Lynn and give us one of your sketches on how to wire it so as not to accidentally switch B+ (12 volts) to ground !!......... From racing slot cars. Shunting the motor wires, is the brakes on slot cars= . When un-powered but spinning, the permanent magnet motor becomes a generato= r. Shunting the output produces current flow in opposition to the running direction of the motor. = The fan will turn, only very slowly. Lynn E. Hanover --NextPart_Webmail_9m3u9jl4l_2426_1218406769_0 Content-Type: multipart/related; boundary="NextPart_Webmail_9m3u9jl4l_2426_1218406769_1" --NextPart_Webmail_9m3u9jl4l_2426_1218406769_1 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable

Thanks Lynn !!

--
Kelly Troyer
"Dyke Delta"_1= 3B ROTARY Engine
"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil Manifol= d

-------------- Original message from "Lynn Hanover" <leha= nover@gmail.com>: --------------

In a message dated 8/10/2008 9:49:55 A.M. Eastern Daylight Time, keltro@att.net writes:

Steve,

I believe it was Lynn Hanover that said if yo= u connect the power leads

(+ & - ) together when fan is not powered that it will not freewhe= el in flight.

Jump in here Lynn and give us one of your sket= ches on how to wire it

so as not to accidentally switch B+ (12 volts) to ground !!.........

From racing slot cars. Shunting the motor wires, is the brakes on slot= cars.

When un-powered but spinning, the permanent magnet motor becomes a gen= erator. Shunting the output

produces current flow in opposition to the running direction of the mo= tor. The fan will turn, only very slowly.

Lynn E. Hanover

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