X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao05.cox.net ([68.230.241.34] verified) by logan.com (CommuniGate Pro SMTP 4.3c5) with ESMTP id 943803 for flyrotary@lancaironline.net; Sat, 14 May 2005 11:43:14 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.34; envelope-from=ALVentures@cox.net Received: from BigAl ([68.7.14.39]) by fed1rmmtao05.cox.net (InterMail vM.6.01.04.00 201-2131-118-20041027) with ESMTP id <20050514154227.LHVG8651.fed1rmmtao05.cox.net@BigAl> for ; Sat, 14 May 2005 11:42:27 -0400 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] How long can you fly on your battery?? Date: Sat, 14 May 2005 08:42:31 -0700 Message-ID: <000501c5589b$8a786b90$6400a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0006_01C55860.DE199390" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_0006_01C55860.DE199390 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable =20 Turned the alternator off at 5500 feet and flew for 1 hour before = voltage came down to 11 volts. =20 Do not know how low before some of the systems start shutting down. Anyone have any ideas on coils, injectors, EC2's before they quit?? =20 That=92s pretty good. I=92m pretty sure that PC 625 is rated at 18 = amp-hr; but a-hr ratings are not necessarily consistent. It=92s based on a certain current draw down to a certain voltage; and I have found the makers = don=92t always rate them the same. =20 Just based on the typical solid state devices, I=92d expect things to = keep operating down to at least 10 volts, and maybe lower. I have two of the PC-625s, so they should keep my 20B spinning for quite awhile in the = event of an alt failure. =20 Had to richen up immediately when I shut alternator off. Hmmmm?? =20 That=92s interesting. Probably the result of the injector = characteristics changing as the voltage drops 2 =96 2 =BD volts. Possibly also some = effect on the ECU, but I wouldn=92t know. That=92s about a 15% drop in voltage = when you turn the alternator off. =20 Bernie, about 39 hours now =20 Go Bernie!! =20 Al ------=_NextPart_000_0006_01C55860.DE199390 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

 

Turned the alternator off at 5500 feet and flew for 1 hour before = voltage

came down to 11 volts.

 

Do not know how low before some of the systems start shutting = down.

Anyone have any ideas on coils, injectors, EC2's before they = quit??

 

That’s = pretty good.=A0 I’m pretty sure that PC 625 is rated at 18 amp-hr; but = a-hr ratings are not necessarily consistent. =A0It’s based on a certain = current draw down to a certain voltage; and I have found the makers don’t = always rate them the same.

 

Just based on = the typical solid state devices, I’d expect things to keep operating = down to at least 10 volts, and maybe lower. =A0I have two of the PC-625s, so = they should keep my 20B spinning for quite awhile in the event of an alt = failure.

 

Had to richen up immediately when I shut alternator off.=A0 = Hmmmm??

 

That’s interesting. Probably the result of the injector characteristics = changing as the voltage drops 2 – 2 =BD volts. =A0Possibly also some effect on = the ECU, but I wouldn’t know.=A0 That’s about a 15% drop in voltage = when you turn the alternator off.

 

Bernie, about 39 hours now

 

Go = Bernie!!

 

Al

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