Return-Path: Sender: (Marvin Kaye) To: lml@lancaironline.net Date: Wed, 11 Feb 2004 12:46:25 -0500 Message-ID: X-Original-Return-Path: Received: from imo-r02.mx.aol.com ([152.163.225.98] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 2987591 for lml@lancaironline.net; Wed, 11 Feb 2004 12:19:33 -0500 Received: from Tubamanflies@aol.com by imo-r02.mx.aol.com (mail_out_v36_r4.12.) id q.c0.4f39837 (4116) for ; Wed, 11 Feb 2004 12:19:27 -0500 (EST) From: Tubamanflies@aol.com X-Original-Message-ID: X-Original-Date: Wed, 11 Feb 2004 12:19:27 EST Subject: Re: [LML] Alternator size X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="part1_c0.4f39837.2d5bbe1f_boundary" X-Mailer: 8.0 for Windows sub 6024 --part1_c0.4f39837.2d5bbe1f_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Steve, Most of the ones that I have seen put on aircraft are in the 50 to 65 amp range. I know Lancair Certififed was looking at a high amp model, 100 amps I think for use with the deicing system. One thing to remember, the higher the current the bigger the wire. If your bird is set up for a 35 amp unit and you put in a 65 amp the wiring may be too small. Also you have a greater chance of cooking the battery. My bird has a 60 amp and with everything on the load meter shows about 25 amps. This does no include the gear pump. One thing I do after start is run the engine for a couple of minutes, usally until I see a little oil temp befor I turn anything else on. It gives the battery a chance to catch up after the high draw start. Anyway, check the wiring size before you put anyting larger in. Ray . . In a message dated 2/11/04 10:27:49 AM Central Standard Time, sreeves@sc.rr.com writes: > What is a good figure for an alternator rating? I am constantly adding new > > electrical gadgets to my aircraft, and want to make sure that I have enough > power to drive everything without worry (landing lights..cockpit > lighting..everything else). I had one go bad in flight and had it > replaced, but I don't know what size it is. Thanks. > > Steve > > --part1_c0.4f39837.2d5bbe1f_boundary Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Steve,

Most of the ones that I have seen put on aircraft are in the 50 to 65 amp ra= nge.  I know Lancair Certififed was looking at a high amp model, 100 am= ps I think for use with the deicing system. 

One thing to remember, the higher the current the bigger the wire.  If=20= your bird is set up for a 35 amp unit and you put in a 65 amp the wiring may= be too small.  Also you have a greater chance of cooking the battery.&= nbsp;

My bird has a 60 amp and with everything on the load meter shows about 25 am= ps. This does no include the gear pump.  One thing I do after start is=20= run the engine for a couple of minutes,  usally until I see a little oi= l temp befor I turn anything else on.  It gives the battery a chance to= catch up after the high draw start.

Anyway, check the wiring size before you put anyting larger in.

Ray .  .  

In a message dated 2/11/04 10:27:49 AM Central Standard Time, sreeves@sc.rr.= com writes:

What is a good figure for an al= ternator rating?  I am constantly adding new
electrical gadgets to my aircraft, and want to make sure that I have enough=20=
power to drive everything without worry (landing lights..cockpit
lighting..everything else).  I had one go bad in flight and had it
replaced, but I don't know what size it is.  Thanks.

Steve



 --part1_c0.4f39837.2d5bbe1f_boundary--