Return-Path: Received: from fed1rmmtao12.cox.net ([68.230.241.27] verified) by logan.com (CommuniGate Pro SMTP 4.2b5) with ESMTP id 143811 for flyrotary@lancaironline.net; Tue, 08 Jun 2004 02:13:16 -0400 Received: from BigAl ([68.107.116.221]) by fed1rmmtao12.cox.net (InterMail vM.6.01.03.02 201-2131-111-104-20040324) with ESMTP id <20040608061244.QMDV1034.fed1rmmtao12.cox.net@BigAl> for ; Tue, 8 Jun 2004 02:12:44 -0400 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] LS1 Coils - amp draw? Date: Mon, 7 Jun 2004 23:12:48 -0700 Message-ID: <000001c44d1f$9f991070$6400a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C44CE4.F33A3870" 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 V6.00.2800.1165 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C44CE4.F33A3870 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Subject: [FlyRotary] LS1 Coils - amp draw? =20 Good evening all, I think I found out why my engine ran under powered on the last flight. = The fuse supplying the leading coils was blown. It was a 15 amp fuse, which = I would have thought would be more than adequate. Of course, the fuse is supplying two of the coils, not one. Perhaps that's where I went wrong = with the calculation. =20 =20 John; =20 What type of fuse were you using? Just looking at the time-current = specs for an automotive blade-type fuse, shows that it should not open until = about 22 amps, and then only for a duration of more than about 1 sec. =20 Al ------=_NextPart_000_0001_01C44CE4.F33A3870 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

Subject: [FlyRotary] LS1 Coils - amp draw?

 

Good evening = all,

I think I found = out why my engine ran under powered on the last flight. The fuse supplying the = leading coils was blown. It was a 15 amp fuse, which I would have thought would = be more than adequate. Of course, the fuse is supplying two of the coils, not = one. Perhaps that's where I went wrong with the = calculation.

 

 

John;

 

What type of fuse were you = using?  Just looking at the time-current specs for an automotive blade-type = fuse, shows that it should not open until about 22 amps, and then only for a = duration of more than about 1 sec.

 

Al

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