X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [66.219.56.245] (HELO mail.qnsi.net) by logan.com (CommuniGate Pro SMTP 5.3.9) with ESMTP id 4476385 for flyrotary@lancaironline.net; Wed, 22 Sep 2010 09:13:47 -0400 Received-SPF: none receiver=logan.com; client-ip=66.219.56.245; envelope-from=bhughes@qnsi.net Return-Receipt-To: "Bobby J. Hughes" MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01CB5A60.ADA82CD2" Subject: RE: [FlyRotary] Re: Alternator Disposition-Notification-To: "Bobby J. Hughes" Content-class: urn:content-classes:message Date: Wed, 22 Sep 2010 08:15:58 -0600 X-MimeOLE: Produced By Microsoft Exchange V6.5 Message-ID: <74120FDE88CAFE4DBDA8814BCE20A3F324C5AD@qnsi-mail.qnsi.net> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [FlyRotary] Re: Alternator Thread-Index: ActaNLhfmQhipA/BQ3WyqUfY2uaeBgAH8HIg References: From: "Bobby J. Hughes" To: "Rotary motors in aircraft" This is a multi-part message in MIME format. ------_=_NextPart_001_01CB5A60.ADA82CD2 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable I had an internally regulated Van's alternator fail with high voltage after washing the engine earlier this year. I replaced the regulator but it quickly failed again with low voltage. I purchased a refurbished replacement locally and have not had a chance to disassemble the failed unit. I do have a crowbar circuit but I noticed the failure and opened the circuit before it activated. My DPST alternator switch closes the ignition lead and alternator contactor coil.=20 =20 Bobby (traveling for work and still finishing fiberglass) ________________________________ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of shipchief@aol.com Sent: Wednesday, September 22, 2010 2:58 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Alternator Like Brian, I 'm running a 60 amp NIPON DENSO. I'm running a mini 1 wire alternator I got on ebay. It failed (low voltage) because the brush holder was too tight on the brushes and held one too tight until it lost contact with the slip ring. I quickly and easily got a better replacement from "the rebuilder" in Kent WA. ($6) He said "you gotta love that DENSO, everything is mounted on the back." And that's true. the regulator, diode bridge and brush rigging are all on the back and can be removed for service without removing the alternator from the engine if you have enough room. That servicability more than makes up for the one deficiency I had. I just bought a second one because the output connection post faces straight off the back, which suits me. My current one has the output post touching my oil cooler inlet duct, so the new version suits my application better.=20 Gotta love the DENSO!! I might consider an output overvoltage 'crowbar' protection device, but I have not yet heard of one of these alternators failing to 'overvoltage'. Scott -----Original Message----- From: bktrub@aol.com To: Rotary motors in aircraft Sent: Tue, Sep 21, 2010 4:32 pm Subject: [FlyRotary] Re: Alternator I'm using a 40 amp Nippondenso alternator, with a slightly larger diameter pulley that is a micro v-belt(serpentine style). I got it new from Romaine Electric in Seattle for $140 new. It has an internal voltage regulator. It puts out plenty of juice.=20 =20 Brian Trubee -----Original Message----- From: josrph berki To: Rotary motors in aircraft Sent: Tue, Sep 21, 2010 3:21 pm Subject: [FlyRotary] Alternator What alternator is being used on the rotary? With EFI and electronic ignition I would think a 60 amp would be suitable. Does anyone have a light weight small solution? Thanks for any help. Joe Berki Limo EZ -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html ------_=_NextPart_001_01CB5A60.ADA82CD2 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable
I had an internally regulated Van's = alternator fail with=20 high voltage after washing the engine earlier this year. I replaced the=20 regulator but it quickly failed again with low voltage. I = purchased a=20 refurbished replacement locally and have not had a chance to disassemble = the=20 failed unit. I do have a crowbar circuit but I noticed the failure and = opened=20 the circuit before it activated. My DPST alternator switch closes the = ignition=20 lead and alternator contactor coil.
 
Bobby
(traveling for work and still finishing=20 fiberglass)
From: Rotary motors in aircraft=20 [mailto:flyrotary@lancaironline.net] On Behalf Of=20 shipchief@aol.com
Sent: Wednesday, September 22, 2010 2:58 = AM
To: Rotary motors in aircraft
Subject: = [FlyRotary] Re:=20 Alternator

Like Brian, I 'm running a 60 amp NIPON DENSO. I'm running a mini 1 = wire=20 alternator I got on ebay. It failed (low voltage) because the brush = holder was=20 too tight on the brushes and held one too tight until it lost contact = with the=20 slip ring. I quickly and easily got a better replacement from "the = rebuilder" in=20 Kent WA. ($6) He said "you gotta love that DENSO, everything is mounted = on the=20 back."
And that's true. the regulator, diode bridge and brush rigging are = all on=20 the back and can be removed for service without removing the alternator = from the=20 engine if you have enough room. That servicability more than makes up = for the=20 one deficiency I had.
I just bought a second one because the output=20 connection post faces straight off the back, which suits me. My current = one has=20 the output post touching my oil cooler inlet duct, so the new version = suits my=20 application better.
Gotta love the DENSO!!
I might consider an output overvoltage 'crowbar' protection device, = but I=20 have not yet heard of one of these alternators failing to = 'overvoltage'.
Scott


-----Original=20 Message-----
From: bktrub@aol.com
To: Rotary motors in aircraft=20 <flyrotary@lancaironline.net>
Sent: Tue, Sep 21, 2010 4:32=20 pm
Subject: [FlyRotary] Re: Alternator

I'm using a 40 amp Nippondenso alternator, with a slightly larger = diameter=20 pulley that is a micro v-belt(serpentine style). I got it new from = Romaine=20 Electric in Seattle for $140 new. It has an internal voltage regulator. = It puts=20 out plenty of juice.
 
Brian Trubee



-----Original=20 Message-----
From: josrph berki <jskmberki@windstream.net>=
To:=20 Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent:=20 Tue, Sep 21, 2010 3:21 pm
Subject: [FlyRotary] Alternator

What alternator is being used on the =
rotary?  With EFI and electronic
ignition I would think a 60 amp would be suitable.  Does anyone have a =
light
weight small solution?  Thanks for any help.

Joe Berki
Limo EZ


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