Return-Path: Received: from [24.25.9.102] (HELO ms-smtp-03-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.2b2) with ESMTP id 3208440 for flyrotary@lancaironline.net; Thu, 06 May 2004 07:44:20 -0400 Received: from EDWARD (clt25-78-058.carolina.rr.com [24.25.78.58]) by ms-smtp-03-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id i46BiHs2007084 for ; Thu, 6 May 2004 07:44:18 -0400 (EDT) Message-ID: <002b01c4335f$7878f840$2402a8c0@EDWARD> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Coolant Pressure Gauge Date: Thu, 6 May 2004 07:44:20 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0028_01C4333D.F1293DD0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1409 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0028_01C4333D.F1293DD0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Could be Jim. However, when I tightened the belts my alternator went = from producing 13.8 volts to 14.6 volts, so I concluded that the lower = voltage was due to the belts slipping. But, perhaps not. Ed Ed Anderson RV-6A N494BW Rotary Powered Matthews, NC ----- Original Message -----=20 From: Jim Sower=20 To: Rotary motors in aircraft=20 Sent: Wednesday, May 05, 2004 10:04 PM Subject: [FlyRotary] Re: Coolant Pressure Gauge <... I was surprised that when I inspected the belt there were no = signs of slipping or heat produced by the slippage such as a glazed = surface or cracks ...>=20 Strange. That's exactly how I would determine that my belt(s) were = slipping. Absent damage to the belts, I don't know how I could conclude = they were slipping. Turning the water pump by hand is certainly a loose = belt, but would not the centrifugal force of >5000 rpm "tighten" it = enough to overcome much if not all of that looseness? And of course the = same centrifugal tension is operating on the alt pulley so I'd be at = least casually looking for another reason for the electrical problems = that I could support by pointing to a damaged part.=20 Just a theory .. Jim S.=20 Ed Anderson wrote:=20 Jim, I was surprised that when I inspected the belt there were no = signs of=20 slipping or heat produced by the slippage such as a glazed surface = or=20 cracks. I was using top of the line GATES belts which may have = helped. I=20 do intend to swap the set of belts out. There could be damage or=20 deterioration that a visual inspection could not spot.=20 Yes, if both belts had gone, then it would haven been either glider = time=20 (again) or cook the engine. Neither one desirable.=20 I generally plan my flights from airport to airport to enhance the = chances=20 of having a reachable one should the need arise, but of course, can = not=20 always been within gliding distance.=20 Ed=20 Ed Anderson=20 RV-6A N494BW Rotary Powered=20 Matthews, NC=20 ----- Original Message -----=20 From: "Jim Sower" =20 To: "Rotary motors in aircraft" =20 Sent: Wednesday, May 05, 2004 8:53 PM=20 Subject: [FlyRotary] Re: Coolant Pressure Gauge=20 > What did the belt look like after all that sliding across the = alternator=20 > pulley? Sounds like someone's lucky he didn't heat the belt until = it=20 broke and=20 > really have a problem.=20 >=20 > Ed Anderson wrote:=20 >=20 > > Actually, Mark, I did not notice any variance in the cooling = system=20 from=20 > > the normal. I just checked my flight log for that trip and at = cruise my=20 oil=20 > > and coolant ranged from 160-170F which is normal. I too would = have=20 thought=20 > > that as loose as the belts were (I could easily turn the water = pump=20 against=20 > > the belt friction by hand) that the water pump would have slowed = down=20 > > sufficiently to have elevated the coolant temp. But, it = apparently did=20 not.=20 > >=20 > > Perhaps another way of looking at it is in regards to the power = needed=20 to=20 > > drive sufficient coolant, apparently not very much which = corresponds=20 well=20 > > with the 1/3 - 1/2 HP of the EWPs.=20 > >=20 > > Ed=20 > > .=20 > > Ed Anderson=20 > > RV-6A N494BW Rotary Powered=20 > > Matthews, NC=20 > > ----- Original Message -----=20 > > From: "Mark Steitle" =20 > > To: "Rotary motors in aircraft" =20 > > Sent: Wednesday, May 05, 2004 8:57 AM=20 > > Subject: [FlyRotary] Re: Coolant Pressure Gauge=20 > >=20 > > > Ed,=20 > > > You reported a loose alternator/water pump belt(s) while on = your way=20 back=20 > > > from SNF causing the alternator field breaker to trip. Did = you notice=20 any=20 > > > changes in water pressure that could be associated with the = loose=20 > > > alternator belts?=20 > > >=20 > > > Mark S.=20 > > >=20 > > >=20 > > > At 08:09 AM 5/5/2004 -0400, you wrote:=20 > > > >Steve,=20 > > > >=20 > > > > I use a 0-30 psi fuel pressure sensor and gauge for my = coolant=20 > > pressure=20 > > > >sensor and its still working fine after close to 300 hours. = At one=20 time=20 > > > >(and they may still do) UMA offered a coolant (or water) = pressure=20 gauge=20 > > so=20 > > > >marked - they actually silk screened a new placard and placed = it in=20 the=20 > > fuel=20 > > > >gauge I purchased from them. So my fuel gauge actually says = "Water=20 > > > >Pressure"=20 > > > >=20 > > > > The coolant gauge gives you pressure information that you = soon=20 begin=20 > > to=20 > > > >correlate with your coolant temperature as well as OAT. You = soon=20 begin=20 > > to=20 > > > >notice when anything departs from the norm. Its simple = another bit=20 of=20 > > > >information about your system which does nothing for you most = of the=20 time=20 > > > >but provide that comfort level that things are nominal - but, = can=20 alert=20 > > you=20 > > > >to departures from the nominal which bear investigating.=20 > > > >=20 > > > >=20 > > > >Ed=20 > > > >=20 > > > >Ed Anderson=20 > > > >RV-6A N494BW Rotary Powered=20 > > > >Matthews, NC=20 > > > >----- Original Message -----=20 > > > >From: "Steve Brooks" =20 > > > >To: "Rotary motors in aircraft" = > > > >Sent: Wednesday, May 05, 2004 7:18 AM=20 > > > >Subject: [FlyRotary] Re: Mystery of the leaking coolant=20 > > > >=20 > > > >=20 > > > > > Yes, it does sound like a good idea. I've looked for a = sender and=20 > > gauge,=20 > > > > > but haven't found any. Does anyone have a good source for = these ?=20 > > > > >=20 > > > > > Steve Brooks=20 > > > > >=20 > > > > > -----Original Message-----=20 > > > > > From: Rotary motors in aircraft=20 [mailto:flyrotary@lancaironline.net]On=20 > > > > > Behalf Of Bill Dube=20 > > > > > Sent: Tuesday, May 04, 2004 9:04 PM=20 > > > > > To: Rotary motors in aircraft=20 > > > > > Subject: [FlyRotary] Re: Mystery of the leaking coolant=20 > > > > >=20 > > > > >=20 > > > > >=20 > > > > > >=20 > > > > > >With the overflow plugged it was probably building up = some pretty=20 > > good=20 > > > > > >pressure, which I'm sure led to the failure of the pump = seal. It=20 is=20 > > such=20 > > > > > an=20 > > > > > >odd thing to have happened, but I'm glad that my days of = chasing=20 the=20 > > > >drips=20 > > > > > >of coolant are over. I think that the hoses must be = there to=20 stay,=20 > > since=20 > > > > > >they didn't blow off.=20 > > > > >=20 > > > > > In "The Book" Tracy strongly suggests installing = a=20 coolant=20 > > system=20 > > > > > pressure gauge. It sounds like it might be a good = suggestion, in=20 light=20 > > of=20 > > > > > the trouble you had.=20 > > > > >=20 > > > > >=20 > > > > >=20 > > > > > >> Homepage: http://www.flyrotary.com/=20 > > > > > >> Archive: = http://lancaironline.net/lists/flyrotary/List.html=20 > > > > >=20 > > > > >=20 > > > > > >> Homepage: http://www.flyrotary.com/=20 > > > > > >> Archive: = http://lancaironline.net/lists/flyrotary/List.html=20 > > > > >=20 > > > >=20 > > > >=20 > > > >=20 > > > > >> Homepage: http://www.flyrotary.com/=20 > > > > >> Archive: = http://lancaironline.net/lists/flyrotary/List.html=20 > > >=20 > > >=20 > > > >> Homepage: http://www.flyrotary.com/=20 > > > >> Archive: = http://lancaironline.net/lists/flyrotary/List.html=20 > >=20 > > >> Homepage: http://www.flyrotary.com/=20 > > >> Archive: = http://lancaironline.net/lists/flyrotary/List.html=20 >=20 > --=20 > Jim Sower ... Destiny's Plaything=20 > Crossville, TN; Chapter 5=20 > Long-EZ N83RT, Velocity N4095T=20 >=20 >=20 >=20 > >> Homepage: http://www.flyrotary.com/=20 > >> Archive: http://lancaironline.net/lists/flyrotary/List.html=20 >> Homepage: http://www.flyrotary.com/=20 >> Archive: http://lancaironline.net/lists/flyrotary/List.html --=20 Jim Sower ... Destiny's Plaything=20 Crossville, TN; Chapter 5=20 Long-EZ N83RT, Velocity N4095T=20 =20 ------=_NextPart_000_0028_01C4333D.F1293DD0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Could be Jim.  However, when I = tightened the=20 belts my alternator went from producing 13.8 volts to 14.6 volts, so I = concluded=20 that the lower voltage was due to the belts slipping.  But, perhaps = not.
 
Ed
 
Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
----- Original Message -----
From:=20 Jim=20 Sower
Sent: Wednesday, May 05, 2004 = 10:04=20 PM
Subject: [FlyRotary] Re: = Coolant Pressure=20 Gauge

<... I was surprised that when I inspected the belt = there=20 were no signs of slipping or heat produced by the slippage such as a = glazed=20 surface or cracks ...>=20

Strange.  That's exactly how I would determine that my belt(s) = were=20 slipping.  Absent damage to the belts, I don't know how I could = conclude=20 they were slipping.  Turning the water pump by hand is certainly = a loose=20 belt, but would not the centrifugal force of >5000 rpm "tighten" it = enough=20 to overcome much if not all of that looseness?  And of course the = same=20 centrifugal tension is operating on the alt pulley so I'd be at least=20 casually looking for another reason for the electrical problems = that I=20 could support by pointing to a damaged part.=20

Just a theory .. Jim S.=20

Ed Anderson wrote:=20

Jim, I was surprised that when I inspected = the belt=20 there were no signs of
slipping or heat produced by the slippage = such as=20 a glazed surface or
cracks.  I was using top of the line = GATES=20 belts which may have helped.  I
do intend to swap the set = of belts=20 out. There could be damage or
deterioration that a visual = inspection=20 could not spot.=20

Yes, if both belts had gone, then it would haven been  = either glider=20 time
(again) or cook the engine.  Neither one desirable. =
I=20 generally plan my flights from airport to airport to enhance the = chances=20
of having a reachable one should the need arise, but of course, = can not=20
always been within gliding distance.=20

Ed=20

Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC =
-----=20 Original Message -----
From: "Jim Sower"=20 <canarder@frontiernet.net>
To: "Rotary motors in aircraft" = <flyrotary@lancaironline.net>
Sent: Wednesday, May 05, = 2004 8:53=20 PM
Subject: [FlyRotary] Re: Coolant Pressure Gauge=20

> What did the belt look like after all that sliding across = the=20 alternator
> pulley?  Sounds like someone's lucky he = didn't heat=20 the belt until it
broke and
> really have a problem. =
>=20
> Ed Anderson wrote:
>
> > Actually, = Mark,  I=20 did not notice any variance in the cooling system
from
> = > the=20 normal.  I just checked my flight log for that trip and at = cruise my=20
oil
> > and coolant ranged from 160-170F which is=20 normal.  I too  would have
thought
> > that = as loose=20 as the belts were (I could easily turn the water pump
against =
>=20 > the belt friction by hand) that the water pump would have = slowed down=20
> > sufficiently to have elevated the coolant temp.  = But, it=20 apparently did
not.
> >
> > Perhaps another = way of=20 looking at it is in regards to the power needed
to
> > = drive=20 sufficient coolant, apparently not very much which corresponds =
well=20
> > with the 1/3 - 1/2 HP of the EWPs.
> > =
> >=20 Ed
> > .
> > Ed Anderson
> > RV-6A = N494BW=20 Rotary Powered
> > Matthews, NC
> > ----- = Original=20 Message -----
> > From: "Mark Steitle"=20 <msteitle@mail.utexas.edu>
> > To: "Rotary motors in = aircraft" <flyrotary@lancaironline.net>
> > Sent: = Wednesday,=20 May 05, 2004 8:57 AM
> > Subject: [FlyRotary] Re: Coolant = Pressure=20 Gauge
> >
> > > Ed,
> > > You = reported a=20 loose alternator/water pump belt(s) while on your way
back =
> >=20 > from SNF causing the alternator field breaker to trip.  = Did you=20 notice
any
> > > changes in water pressure that = could be=20 associated with the loose
> > > alternator belts? =
> >=20 >
> > > Mark S.
> > >
> > = >=20
> > > At 08:09 AM 5/5/2004 -0400, you wrote:
> = > >=20 >Steve,
> > > >
> > >=20 >     I use a 0-30 psi fuel pressure sensor = and gauge=20 for my coolant
> > pressure
> > > >sensor = and its=20 still working fine after close to 300 hours.  At one
time =
>=20 > > >(and they may still do) UMA offered a coolant (or = water)=20 pressure
gauge
> > so
> > > >marked - = they=20 actually silk screened a new placard and placed it in
the =
> >=20 fuel
> > > >gauge I purchased from them.  So my = fuel=20 gauge actually says "Water
> > > >Pressure"
> = >=20 > >
> > > >    The coolant = gauge gives=20 you pressure information that you soon
begin
> > to =
>=20 > > >correlate with your coolant temperature as well as = OAT. =20 You soon
begin
> > to
> > > >notice = when=20 anything departs from the norm.  Its simple another bit
of =
>=20 > > >information about your system which does nothing for = you most=20 of the
time
> > > >but provide that comfort = level that=20 things are nominal - but, can
alert
> > you
> = > >=20 >to departures from the nominal which bear investigating. =
> >=20 > >
> > > >
> > > >Ed
> = >=20 > >
> > > >Ed Anderson
> > > = >RV-6A=20 N494BW Rotary Powered
> > > >Matthews, NC
> = > >=20 >----- Original Message -----
> > > >From: "Steve = Brooks"=20 <steve@tsisp.com>
> > > >To: "Rotary motors in = aircraft" <flyrotary@lancaironline.net>
> > > = >Sent:=20 Wednesday, May 05, 2004 7:18 AM
> > > >Subject: = [FlyRotary]=20 Re: Mystery of the leaking coolant
> > > >
> = >=20 > >
> > > > > Yes, it does sound like a = good=20 idea.  I've looked for a sender and
> > gauge, =
> >=20 > > > but haven't found any.  Does anyone have a good = source=20 for these ?
> > > > >
> > > > = > Steve=20 Brooks
> > > > >
> > > > >=20 -----Original Message-----
> > > > > From: Rotary = motors=20 in aircraft
[mailto:flyrotary@lancaironlin= e.net]On=20
> > > > > Behalf Of Bill Dube
> > > = >=20 > Sent: Tuesday, May 04, 2004 9:04 PM
> > > > = > To:=20 Rotary motors in aircraft
> > > > > Subject: = [FlyRotary]=20 Re: Mystery of the leaking coolant
> > > > > =
>=20 > > > >
> > > > >
> > > = >=20 > >
> > > > > >With the overflow plugged = it was=20 probably building up some pretty
> > good
> > = > >=20 > >pressure, which I'm sure led to the failure of the pump = seal. =20 It
is
> > such
> > > > > an =
> >=20 > > > >odd thing to have happened, but I'm glad that my = days of=20 chasing
the
> > > >drips
> > > > = >=20 >of coolant are over.  I think that the hoses must be there = to=20
stay,
> > since
> > > > > >they = didn't=20 blow off.
> > > > >
> > > >=20 >          In "The = Book"=20 Tracy strongly suggests installing a
coolant
> > = system=20
> > > > > pressure gauge. It sounds like it might = be a=20 good suggestion, in
light
> > of
> > > = > >=20 the trouble you had.
> > > > >
> > > = >=20 >
> > > > >
> > > > >=20 >>  Homepage:  http://www.flyrotary.com/ =
> >=20 > > > >>  Archive:   http://lancai= ronline.net/lists/flyrotary/List.html=20
> > > > >
> > > > >
> = > >=20 > > >>  Homepage:  http://www.flyrotary.com/ =
> >=20 > > > >>  Archive:   http://lancai= ronline.net/lists/flyrotary/List.html=20
> > > > >
> > > >
> > = > >=20
> > > >
> > > > >> =20 Homepage:  http://www.flyrotary.com/ =
> >=20 > > >>  Archive:   http://lancai= ronline.net/lists/flyrotary/List.html=20
> > >
> > >
> > > = >> =20 Homepage:  http://www.flyrotary.com/ =
> >=20 > >>  Archive:   http://lancai= ronline.net/lists/flyrotary/List.html=20
> >
> > >>  Homepage:  http://www.flyrotary.com/ =
> >=20 >>  Archive:   http://lancai= ronline.net/lists/flyrotary/List.html=20
>
> --
> Jim Sower ... Destiny's Plaything =
>=20 Crossville, TN; Chapter 5
> Long-EZ N83RT, Velocity N4095T =
>=20
>
>
> >>  Homepage:  http://www.flyrotary.com/ =
>=20 >>  Archive:   http://lancai= ronline.net/lists/flyrotary/List.html=20

>>  Homepage:  http://www.flyrotary.com/=20
>>  Archive:   http://lancai= ronline.net/lists/flyrotary/List.html

--
Jim Sower ... Destiny's Plaything
Crossville, TN; = Chapter 5=20
Long-EZ N83RT, Velocity N4095T
  =

------=_NextPart_000_0028_01C4333D.F1293DD0--