Return-Path: Received: from email2k3.itlnet.net ([64.19.112.12] verified) by logan.com (CommuniGate Pro SMTP 4.3c1) with ESMTP id 744754 for flyrotary@lancaironline.net; Fri, 18 Feb 2005 14:56:01 -0500 Received-SPF: none receiver=logan.com; client-ip=64.19.112.12; envelope-from=jwvoto@itlnet.net Received: from rav.itlnet.net (unverified [192.168.10.149]) by itlnet.net (Rockliffe SMTPRA 6.1.17) with SMTP id for ; Fri, 18 Feb 2005 13:55:20 -0600 Received: from JWVOTO (unverified [64.19.116.152]) by itlnet.net (Rockliffe SMTPRA 6.1.17) with SMTP id for ; Fri, 18 Feb 2005 13:55:19 -0600 Message-ID: <015301c515f4$3b6363a0$3a721340@JWVOTO> From: "Wendell Voto" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Amps required to run engine & amp- hours available Date: Fri, 18 Feb 2005 13:57:23 -0600 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0144_01C515C1.C5DD1900" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4133.2400 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4133.2400 This is a multi-part message in MIME format. ------=_NextPart_000_0144_01C515C1.C5DD1900 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Bernie, Now that is the kind of information I've been looking for. What starter = are you using in this test? No one agreed on disagreed with my assumption that the PC625 battery = would be the one to choose if it weights less than the PC680. According = to the charts the PC625 has 3 minutes more reserve than the PC680 but a = little less in the cranking amps. Your measurements reinforce my = belief. Am I wrong?? Anyone have the weights of these batteries? Wendell Subject: [FlyRotary] Amps required to run engine & amp- hours available >=20 > One of my planned flyoff flight test is to shut the alternator down = and see how long I can fly before systems start to act up. Plan on a = second battery during flight test so that I can hopefully restart if = necessary or I will join the deadstick club over the airfield of my = choosing. >=20 > I measured the amps required to keep the one pump, the coils, the 4 = injectors while running the engine this morning at about 3000 rpm. It = measured at 7.8 amps. Also measured the amps to crank this morning (65 F = OAT): 142 amps. >=20 > Had ordered a new Odessey PC625 since I had let the 2+ year old one go = flat over Christmas. (Yep left the av master on). Had to shock it with = 24 volts to get it to take a charge. Turns out, I can't measure any = difference of old vs. new during battery test. Hooked up 150 watts of 12 = volt halogen bulbs which gives a draw of 12 amps at 12 volts. Man do = these things hold voltage until the end.It took 55 minutes to get to 11 = volts and dropped to 5 volts in another 15 minutes.=20 >=20 > Based on this, the engine only should run the keep the airplane = airborn for about 1:20 hours. How about a sanity check Tracy, ED, etc; = what did I miss?? >=20 > Bernie, (DAR on Tuesday, engine behaving very nicely with new = injector) >=20 > >> Homepage: http://www.flyrotary.com/ > >> Archive: http://lancaironline.net/lists/flyrotary/List.html=20 ------=_NextPart_000_0144_01C515C1.C5DD1900 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Bernie,

Now that is the kind of information I've been = looking=20 for. What starter are you using in this test?

No one agreed on disagreed with my = assumption=20 that the PC625 battery would be the one to choose if it weights less = than the=20 PC680. According to the charts the PC625 has 3 minutes more reserve than = the=20 PC680 but a little less in the cranking amps. Your measurements = reinforce=20 my belief. Am I wrong?? Anyone have the weights of these = batteries?

Wendell

Subject: [FlyRotary] Amps required to run engine & amp- hours=20 available

>
> One of my planned flyoff flight test is to = shut the=20 alternator down and see how long I can fly before systems start to act = up. Plan=20 on a second battery during flight test so that I can hopefully restart = if=20 necessary or I will join the deadstick club over the airfield of my=20 choosing.
>
> I measured the amps required to keep the one = pump,=20 the coils, the 4 injectors while running the engine this morning at = about 3000=20 rpm. It measured at 7.8 amps. Also measured the amps to crank this = morning (65 F=20 OAT): 142 amps.
>
> Had ordered a new Odessey PC625 since I = had let=20 the 2+ year old one go flat over Christmas. (Yep left the av master on). = Had to=20 shock it with 24 volts to get it to take a charge. Turns out, I can't = measure=20 any difference of old vs. new during battery test. Hooked up 150 watts = of 12=20 volt halogen bulbs which gives a draw of 12 amps at 12 volts. Man do = these=20 things hold voltage until the end.It took 55 minutes to get to 11 volts = and=20 dropped to 5 volts in another 15 minutes.
>
> Based on = this, the=20 engine only should run the keep the airplane airborn for about 1:20 = hours. How=20 about a sanity check Tracy, ED, etc; what did I miss??
>
> = Bernie,=20 (DAR on Tuesday, engine behaving very nicely with new injector)
> =
>=20 >> Homepage: http://www.flyrotary.com/
> = >> Archive: http://lancai= ronline.net/lists/flyrotary/List.html=20 ------=_NextPart_000_0144_01C515C1.C5DD1900--