Return-Path: Received: from imf17aec.mail.bellsouth.net ([205.152.59.65] verified) by logan.com (CommuniGate Pro SMTP 4.3c2) with ESMTP id 760939 for flyrotary@lancaironline.net; Sat, 26 Feb 2005 18:38:49 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.65; envelope-from=sqpilot@bellsouth.net Received: from [209.214.45.14] by imf17aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with ESMTP id <20050226233759.XACR2031.imf17aec.mail.bellsouth.net@[209.214.45.14]> for ; Sat, 26 Feb 2005 18:37:59 -0500 Received: from 127.0.0.1 (AVG SMTP 7.0.300 [266.5.0]); Sat, 26 Feb 2005 17:37:48 -0600 Message-ID: <002101c51c5c$2d242680$0e2dd6d1@paul52u7f5qyav> From: "Paul" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Belt failure Rate Date: Sat, 26 Feb 2005 17:37:46 -0600 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="=======AVGMAIL-4221084C5151=======" --=======AVGMAIL-4221084C5151======= Content-Type: multipart/alternative; boundary="----=_NextPart_000_001E_01C51C29.E26ABCD0" ------=_NextPart_000_001E_01C51C29.E26ABCD0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Yes, and also caused by improper tension, especially the alternator = belt. When all the clearance and marker lights are turned on (both = tractor and trailer), it puts a heavy load on the alternator, and if the = belt is not tensioned properly, causes it to slip. It is very humid = here in Mobile, AL. In the mornings when we first start the trucks, = many of the alternator belts will squeal until the batteries are brought = up to full charge, and the belts dry off (overnight moisture). Then the = squealing stops. Then they are fine, but while they are slipping due to = moisture and heavy alternator drain, they are also wearing. If you = tighten them so much that they do not squeal when wet and batteries are = not fully charged, you put too much side tension on the pulley. Can't = win. Just replace the belts more often. Paul Conner ----- Original Message -----=20 From: Kelly Troyer=20 To: Rotary motors in aircraft=20 Sent: Saturday, February 26, 2005 1:55 PM Subject: [FlyRotary] Belt failure Rate Paul and all, My girlfriend's brothers have over the road trucks and do their = own maintenance. They=20 tell me that most of their belt problems are caused by poor pulley = alignment (Even on new Trucks from the factory)........FWIW -- Kelly Troyer=20 Dyke Delta/13B/RD1C/EC2=20 > Paul wrote:=20 >=20 > > Hi, Todd....I have had to replace the serpentine belt on my Ford = motor=20 > > home. (Broke on the highway on the way to a canard fly-in of = course).=20 > > All of our tractor-trailer units have serpentine belts. Fairly = high=20 > > failure rate. I always keep at least 12 different serpentine belts = (2=20 > > of each size) in my repair truck so that I can fix them on the=20 > > roadside. We use Gates and/or Goodyear. In fairness, however, a = few=20 > > of the older units have a V belt for the alternator. They fail as=20 > > well. Don't know which type of belt fails more frequently, but = they=20 > > both fail with regularity. Now if we changed them at every annual=20 > > condition inspection, however..... Paul Conner=20 -------------------------------------------------------------------------= ----- No virus found in this incoming message. Checked by AVG Anti-Virus. Version: 7.0.300 / Virus Database: 266.5.0 - Release Date: 2/25/2005 ------=_NextPart_000_001E_01C51C29.E26ABCD0 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable

Yes, and also caused by improper = tension,=20 especially the alternator belt. When all the clearance and marker lights = are=20 turned on (both tractor and trailer), it puts a heavy load on the = alternator,=20 and if the belt is not tensioned properly, causes it to slip. It = is very=20 humid here in Mobile, AL. In the mornings when we first start the = trucks,=20 many of the alternator belts will squeal until the batteries are brought = up to=20 full charge, and the belts dry off (overnight moisture). Then the = squealing=20 stops. Then they are fine, but while they are slipping due to = moisture and=20 heavy alternator drain, they are also wearing. If you tighten them = so much=20 that they do not squeal when wet and batteries are not fully charged, = you put=20 too much side tension on the pulley. Can't win. Just replace = the=20 belts more often. Paul Conner

----- Original Message -----

From:=20 Kelly = Troyer

To: Rotary motors in = aircraft

Sent: Saturday, February 26, = 2005 1:55=20 PM

Subject: [FlyRotary] Belt = failure=20 Rate

Paul and all,

My girlfriend's brothers = have over=20 the road trucks and do their own maintenance. They

tell me that most of their belt problems are caused by poor = pulley=20 alignment (Even on new

Trucks from the factory)........FWIW

--
Kelly Troyer
Dyke Delta/13B/RD1C/EC2 =

> Paul wrote:
>
> > Hi, = Todd....I=20 have had to replace the serpentine belt on my Ford motor
> > = home.=20 (Broke on the highway on the way to a canard fly-in of course). =
> >=20 All of our tractor-trailer units have serpentine belts. Fairly high =
>=20 > failure rate. I always keep at least 12 different serpentine = belts (2=20
> > of each size) in my repair truck so that I can fix them = on the=20
> > roadside. We use Gates and/or Goodyear. In fairness, = however, a=20 few
> > of the older units have a V belt for the alternator. = They=20 fail as
> > well. Don't know which type of belt fails more=20 frequently, but they
> > both fail with regularity. Now if = we=20 changed them at every annual
> > condition inspection, = however.....=20 Paul Conner=20 =

<= /MAILTO:FLYROTARY@LANCAIRONLINE.NET>

No virus found in this incoming message.
Checked by AVG=20 Anti-Virus.
Version: 7.0.300 / Virus Database: 266.5.0 - Release = Date:=20 2/25/2005
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