X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 03 Aug 2011 16:56:54 -0400 Message-ID: X-Original-Return-Path: Received: from fmailhost05.isp.att.net ([207.115.11.55] verified) by logan.com (CommuniGate Pro SMTP 5.4.1) with ESMTP id 5080833 for lml@lancaironline.net; Wed, 03 Aug 2011 12:54:14 -0400 Received-SPF: none receiver=logan.com; client-ip=207.115.11.55; envelope-from=bbradburry@bellsouth.net Received: from desktop (adsl-98-85-144-176.mco.bellsouth.net[98.85.144.176]) by isp.att.net (frfwmhc05) with SMTP id <20110803165336H05001price>; Wed, 3 Aug 2011 16:53:37 +0000 X-Originating-IP: [98.85.144.176] From: "Bill Bradburry" X-Original-To: "'Lancair Mailing List'" References: In-Reply-To: Subject: RE: [LML] This is puzzling ..and not only me... X-Original-Date: Wed, 3 Aug 2011 12:53:56 -0400 X-Original-Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0024_01CC51DC.682FCD80" X-Mailer: Microsoft Office Outlook 11 Thread-Index: AcxR75QPIwq4wrrAS06+ulguCrKwTAADQXIg X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.18049 This is a multi-part message in MIME format. ------=_NextPart_000_0024_01CC51DC.682FCD80 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Ronald, My guess is that the engine is not running at high enough rpms during taxi to provide the needed amps so the battery is being slowly drained during the taxi. Then when you do the run up, the AC is being supplied as well as the battery is being replenished. This requires the 85 amps then dropping to 70 as the battery comes back up. In flight, everything requires 44 amps except when the compressor kicks on which pulls a spike up to 60 for a moment or so. The breaker is popping because the AC is pulling more amps than the breaker is set for. I could not guess at why that is the case. What is this breaker protecting? The fan? The compressor clutch? Everything else is mechanical off the engine.?? Bill B _____ From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of RONALD STEVENS Sent: Wednesday, August 03, 2011 11:11 AM To: lml@lancaironline.net Subject: [LML] This is puzzling ..and not only me... Hello guys This is puzzling me and some others that I asked as well. Here is the thing. When I switch on my AC and it starts kicking in my amps goes up until 60 amps and than usually settles around 43 amps. Which is fine I have a 100 amp alternator. Then I start my taxi and the amps pretty much stays the same (with AC on). But when I am doing a run-up my amps goes all the way to 85amps.hovers there a little and then settles back to around 70amp @ 1700rpm In flight when the AC is running (cruise) my amps are around 44amps. Sometimes it goes to 60amps, this is when the AC kicks in again. The puzzling part is, why it goes all the way to 85amps and than goes back again on the run up? I hope to trigger some Ideas here. I am having problems that my breaker from the AC pops after about 15-20min after start. Many thanks == Ronald ------=_NextPart_000_0024_01CC51DC.682FCD80 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Ronald,

=

 

My guess is that the engine is not = running at high enough rpms during taxi to provide the needed amps so the = battery is being slowly drained during the taxi.  Then when you do the run up, = the AC is being supplied as well as the battery is being replenished.  = This requires the 85 amps then dropping to 70 as the battery comes back up.  In = flight, everything requires 44 amps except when the compressor kicks on which = pulls a spike up to 60 for a moment or so.

 

The breaker is popping because the = AC is pulling more amps than the breaker is set for.  I could not guess = at why that is the case.  What is this breaker protecting?  The = fan?  The compressor clutch?  Everything else is mechanical off the = engine…??

 

Bill B

 

From: = Lancair Mailing List = [mailto:lml@lancaironline.net] On Behalf Of RONALD STEVENS
Sent: Wednesday, August = 03, 2011 11:11 AM
To: = lml@lancaironline.net
Subject: [LML] This is = puzzling ..and not only me...

 

Hello = guys

 

This is = puzzling me and some others that I asked as well. Here is the = thing.

 

When I switch = on my AC and it starts kicking in my amps goes up until 60 amps and than usually = settles around 43 amps. Which is fine I have a 100 amp alternator. Then I start = my taxi and the amps pretty much stays the same (with AC = on).

 

But when I am = doing a run-up my amps goes all the way to 85amps…hovers there a little = and then settles back to around 70amp @ 1700rpm

 

In flight = when the AC is running (cruise) my amps are around 44amps. Sometimes it goes to = 60amps, this is when the AC kicks in again.

 

The puzzling = part is, why it goes all the way to 85amps and than goes back again on the run = up? I hope to trigger some Ideas here.

I am having = problems that my breaker from the AC pops after about 15-20min after = start.

 

Many thanks = =3D=3D Ronald

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