X-Virus-Scanned: clean according to Sophos on Logan.com From: "Bobby J. Hughes" Received: from [207.91.159.28] (HELO barracuda.qnsi.net) by logan.com (CommuniGate Pro SMTP 6.1.8) with ESMTP id 8331274 for flyrotary@lancaironline.net; Sat, 16 Jan 2016 10:35:36 -0500 Received-SPF: pass receiver=logan.com; client-ip=207.91.159.28; envelope-from=btv1==823b26ff279==bhughes@qnsi.net X-ASG-Debug-ID: 1452958510-0276451c80a1800001-fw4j19 Received: from mail.qnsi.net ([10.0.0.5]) by barracuda.qnsi.net with ESMTP id zVC8VTKmzYBvjfiV for ; Sat, 16 Jan 2016 09:35:10 -0600 (CST) X-Barracuda-Envelope-From: bhughes@qnsi.net Received: from 10.0.0.5 ([10.0.0.5]) by qnsi-mail.qnsi.net ([10.0.0.5]) with Microsoft Exchange Server HTTP-DAV ; Sat, 16 Jan 2016 15:35:10 +0000 Content-Type: multipart/alternative; boundary="Apple-Mail-FB5951FF-A674-4243-BACC-B8944DE69F62"; charset="iso-8859-1" Content-Transfer-Encoding: 7bit MIME-Version: 1.0 (1.0) Subject: Re: [FlyRotary] Re: What do you think may be happening? Message-ID: <11F73281-22CB-4FA8-AEF5-913999BABE03@qnsi.net> X-ASG-Orig-Subj: Re: [FlyRotary] Re: What do you think may be happening? Date: Sat, 16 Jan 2016 09:35:10 -0600 thread-index: AdFQc3xKNwGN2HQwRu2Gv2e34Pm0Yg== thread-topic: [FlyRotary] Re: What do you think may be happening? References: To: "Rotary motors in aircraft" In-Reply-To: X-Barracuda-Connect: UNKNOWN[10.0.0.5] X-Barracuda-Start-Time: 1452958510 X-Barracuda-URL: http://10.0.0.4:8000/cgi-mod/mark.cgi X-Barracuda-BRTS-Status: 1 X-Virus-Scanned: by bsmtpd at qnsi.net X-Barracuda-Spam-Score: 0.82 X-Barracuda-Spam-Status: No, SCORE=0.82 using global scores of TAG_LEVEL=1000.0 QUARANTINE_LEVEL=1000.0 KILL_LEVEL=1000.0 tests=HTML_MESSAGE, MIME_QP_LONG_LINE, MIME_QP_LONG_LINE_2 X-Barracuda-Spam-Report: Code version 3.2, rules version 3.2.3.26192 Rule breakdown below pts rule name description ---- ---------------------- -------------------------------------------------- 0.00 HTML_MESSAGE BODY: HTML included in message 0.00 MIME_QP_LONG_LINE RAW: Quoted-printable line longer than 76 chars 0.82 MIME_QP_LONG_LINE_2 RAW: Quoted-printable line longer than 76 chars --Apple-Mail-FB5951FF-A674-4243-BACC-B8944DE69F62 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable I have mostly Honeywell NT series switches. The TL series have gold plated c= ontacts and should not be used for loads that may arch during switching. Not= the most attractive or least expensive option.=20 If I remember correctly Dennis dissembled his old switches and found evidenc= e of arching or discoloration on the contacts.=20 http://www.alliedelec.com/lp/140316/honeywell/ Bobby Sent from my iPad > On Jan 15, 2016, at 10:45 PM, Dennis Havarlah wrote: >=20 > What type of switch are you using to disable the primary and secondary inj= ectors? I was using "rocker" switches and I found they failed to make good= contact - failed "open". This would turn off the one set of injectors but= not tell the computer to double the on time of the other injectors. I repl= aced all my switches rocker switches with "snapping" toggle switches. > =20 > I want to thank Steven Boese, Bobby Hughes and Mark Steitle for all their h= elp in diagnosing this problem. > =20 > I never could make the switch fail during ground run testing! > =20 > Dennis H. > =20 --Apple-Mail-FB5951FF-A674-4243-BACC-B8944DE69F62 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 7bit
I have mostly Honeywell NT series switches.  The TL series have gold plated contacts and should not be used for loads that may arch during switching. Not the most attractive or least expensive option. 

If I remember correctly Dennis dissembled his old switches and found evidence of arching or discoloration on the contacts. 


Bobby
Sent from my iPad

On Jan 15, 2016, at 10:45 PM, Dennis Havarlah <flyrotary@lancaironline.net> wrote:

What type of switch are you using to disable the primary and secondary injectors?  I was using  "rocker" switches and I found they failed to make good contact - failed  "open".  This would turn off the one set of injectors but not tell the computer to double the on time of the other injectors.  I replaced all my switches  rocker switches with "snapping" toggle switches.
 
I want to thank Steven Boese, Bobby Hughes and Mark Steitle for all their help in diagnosing this problem.
 
I never could make the switch fail during ground run testing!
 
Dennis H.
 
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