X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.121] verified) by logan.com (CommuniGate Pro SMTP 5.2.14) with ESMTP id 3745466 for flyrotary@lancaironline.net; Sun, 05 Jul 2009 07:29:47 -0400 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.121; envelope-from=eanderson@carolina.rr.com Received: from computername ([75.191.186.236]) by cdptpa-omta03.mail.rr.com with ESMTP id <20090705112909774.SCMJ19903@cdptpa-omta03.mail.rr.com> for ; Sun, 5 Jul 2009 11:29:09 +0000 From: "Ed Anderson" To: "'Rotary motors in aircraft'" Subject: Overvoltage ? [FlyRotary] Re: Modify Alternator for External Regulator Date: Sun, 5 Jul 2009 07:29:13 -0400 MIME-Version: 1.0 Content-Type: multipart/related; boundary="----=_NextPart_000_002E_01C9FD42.4C09F680" X-Mailer: Microsoft Office Outlook, Build 11.0.5510 Thread-Index: Acn9P1qB4LZpo9SbR8aGpe0X8auOpAAI11og X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 In-Reply-To: Message-Id: <20090705112909774.SCMJ19903@cdptpa-omta03.mail.rr.com> This is a multi-part message in MIME format. ------=_NextPart_000_002E_01C9FD42.4C09F680 Content-Type: multipart/alternative; boundary="----=_NextPart_001_002F_01C9FD42.4C09F680" ------=_NextPart_001_002F_01C9FD42.4C09F680 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Just curious, Todd. When you had your alternator run-a-way, did you have a battery or other load on the line. Yes and you are correct, just because the odds are 1 in 1000,000 does not mean your 1 couldn't come up tomorrow. And I STILL DON"T use approved plastic fuel cans (or any other kind) - one refueling fire was enough {:>). Thanks for providing that info to the list - now others can see alternator over voltage is a possibility with a car alternator and without the modification to the field coil circuit may be impossible to shut down - short of shutting down your engine. But, if 60 years of experience is not worth anything regarding alternators - then what is experience worth regarding anything. Like just about everything else in this "hobby", you are constantly assessing risk (or should be) and I decided the risk of modifying my alternator to eliminate the remote risk (base on my experience) of over voltage was higher than an over voltage condition. YMMV {:>) Ed. Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com http://www.andersonee.com http://www.dmack.net/mazda/index.html http://www.flyrotary.com/ http://members.cox.net/rogersda/rotary/configs.htm#N494BW http://www.rotaryaviation.com/Rotorhead%20Truth.htm _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Todd Bartrim Sent: Sunday, July 05, 2009 3:07 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Modify Alternator for External Regulator Yeah, that's what I said too Ed, then it happened to me when I was still early in my flight test (on the ground fortunatly). However after years of carelessly pouring regular old auto fuel from plastic fuel cans, despite all the warnings, I've yet to have a problem. But I did hear of a guy that caught his plane on fire this way. ;) So yeah, I'm sure it could happen. Hope it doesn't though. It would sure ruin my day. Could it happen, undoubtedly, however, in 60 + years of driving automobiles, I have never, never had an alternator run wild - the ones that failed, just died. So if I can get by another 60 years {:>), then I'll probably hang up my wings (or who knows perhaps get another pair {:>) Ed Todd C-FSTB RV9 Turbo13B __________ Information from ESET NOD32 Antivirus, version of virus signature database 3267 (20080714) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com ------=_NextPart_001_002F_01C9FD42.4C09F680 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Just curious, Todd.  When you = had your alternator run-a-way, did you have a battery or other load on the = line.  Yes and you are correct, just because the odds are 1 in 1000,000 does not = mean your 1 couldn’t come up tomorrow. And I STILL DON”T use approved = plastic fuel cans (or any other kind)  – one refueling fire was enough {:>). =

 

Thanks  for providing that = info to the list – now others can see alternator over voltage is a possibility = with a car alternator and without the modification to the field coil circuit may be impossible to shut down – short of shutting down your engine. =

 

  But, if 60 years of = experience is not worth anything regarding alternators – then what is experience = worth regarding anything.  Like just about everything else in this = “hobby”, you are constantly assessing risk (or should be) and I decided the risk of modifying my = alternator to eliminate the remote risk (base on my experience) of over voltage was = higher than an over voltage condition.  YMMV = {:>)

 

Ed.  =

 

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Todd Bartrim
Sent: Sunday, July 05, = 2009 3:07 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = Modify Alternator for External Regulator

 

Yeah, that's what I said too Ed, then it happened to me when I = was still early in my flight test (on the ground fortunatly).
However after years of carelessly pouring regular old auto fuel from = plastic fuel cans, despite all the warnings, I've yet to have a problem. But I = did hear of a guy that caught his plane on fire this way. 3D";)"
So yeah, I'm sure it could happen. Hope it doesn't though. It would sure = ruin my day.

Could it happen, undoubtedly, = however, in 60 + years of driving automobiles, I have never, never had an alternator = run wild – the ones that failed,  just died.  So if I can = get by another 60 years {:>), then I’ll probably hang up my wings (or who = knows perhaps get another pair {:>)

 

Ed

 

Todd
C-FSTB
RV9 Turbo13B



__________ Information from ESET NOD32 Antivirus, version of virus = signature database 3267 (20080714) __________

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com



__________ Information from ESET NOD32 Antivirus, version of = virus signature database 3267 (20080714) __________

The message = was checked by ESET NOD32 Antivirus.

http://www.eset.com
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