REFLECTOR: IVO motor
John Dibble
aminetech at bluefrog.com
Thu Jul 2 06:59:52 CDT 2009
I've cleaned the rings and still unable to reach the pitch limits. My
rings always have a little oil on them and I have never cleaned them
before. I measured the voltage drop across the brushes. For each brush
the drop is ?1 volt in the middle of pitch travel increasing to 5 volts
approaching the limit. Does anyone else have this data that I can
compare with?
John
Michael Watson wrote:
> John,
>
> I?ve been using the original brushes supplied by IVO for ten years now
> and
> really haven?t had a problem with them. One problem I have run into,
> is that
> the rings being in the back, develop a coat of oil which increases the
> resistance
> of the brushes, the amount of time required to change the pitch
> through it?s cycle
> increases. A quick cleaning of the rings and brushes with MEK usually
> solve
> that problem.
>
>
>
> On Tue, Jun 23, 2009 at 12:32 PM, John Dibble ?aminetech at bluefrog.com?
> wrote:
>
> I think the ones supplied by IVO are too small. Mine are
> 1/4x3/8?.
>
> John
>
> Michael Watson wrote:
>
> > Same as the originals. I will measure this Saturday and
> > let you know,
> >
> >
> > On Mon, Jun 22, 2009 at 2:17 PM, John
> > Dibble ?aminetech at bluefrog.com? wrote:
> >
> > What size (cross section) are the brushes? I
> > bought some replacement cartridges that fit my
> > holder.
> >
> > John
> >
> > Michael Watson wrote:
> >
> > > JOHN,IVO sells a new clear transparent brush
> > > holder. You can visually check
> > > the brushes while doing your walk around. I
> > > have 20 hrs. using it. Works
> > > great.
> > >
> > > On Sun, Jun 21, 2009 at 3:01
> > > PM, ?aminetech at bluefrog.com? wrote:
> > >
> > > I touched the slip rings with the
> > > leads from a battery charger and the
> > > motor ran robustly in both
> > > directions. Then, while operating
> > > the switch, I measured the volts at
> > > the leads to the brushes and saw 10
> > > volts. So the problem is with the
> > > brushes. I have large brushes that I
> > > believe are the correct size. I just
> > > replaced one because it was almost
> > > worn off. (I broke off a large part
> > > of it a few years ago). The other
> > > one still has a lot of brush left,
> > > but maybe I need to replace that one
> > > as well. At least I don?t have to
> > > mess with the motor.Thanks for all
> > > the help. John---
> > > mikewatsspg at gmail.com wrote:From:
> > > Michael Watson
> > > ?mikewatsspg at gmail.com?
> > > To: Velocity Aircraft Owners and
> > > Builders list ?reflector at tvbf.org?
> > > Subject: Re: REFLECTOR: IVO
> > > motorDate: Sun, 21 Jun 2009 13:21:22
> > > -0400
> > >
> > > John,
> > >
> > > I have been following this thread and
> > > Larry have given you great advise.
> > >
> > > Try this. Remove the clips from the
> > > top of the brush Assy. Connect
> > > the leads from a 10~25A battery
> > > charger to the top of the Assy one
> > > way
> > > + Red to one brush - Black to the
> > > other. the motor should run to the
> > > max of one pitch setting, reverse the
> > > leads from the charger, and the
> > > motor should run until the prop
> > > reaches the max opposite pitch.
> > > During the runs, the current reading
> > > on the charger should read
> > > between 8 to 12 Amps.
> > >
> > > If the above works, then the motor
> > > and drive system (worm gear) is ok.
> > > I regularly do this to make sure all
> > > is OK back there.
> > > Good Luck.
> > >
> > > On Sun, Jun 21, 2009 at 11:35
> > > AM, ?aminetech at bluefrog.com? wrote:
> > >
> > > I?m not sure if my IVO
> > > current is measured by the
> > > engine monitor, but I do
> > > see about a 5 amp increase
> > > with the switch on. I
> > > measured the volts across
> > > the contact rings and got
> > > 1.7 v when switching to
> > > fine pitch (end of travel)
> > > and 3.5 v when switching to
> > > coarse pitch (pitch
> > > changing). These numbers
> > > seem low. What should they
> > > be? John---
> > > lwcoen at hotmail.com
> > > wrote:From: ?Laurence Coen?
> > > ?lwcoen at hotmail.com?
> > > To: ?Velocity Aircraft
> > > Owners and Builders list?
> > > ?reflector at tvbf.org?
> > > Subject: Re: REFLECTOR: IVO
> > > motor
> > > Date: Sat, 20 Jun 2009
> > > 18:13:38 -0500
> > > John, No you can?t. The
> > > crush plates, lead screw
> > > and cam bobbin all need to
> > > be returned for repair. The
> > > blades do not have to be
> > > shipped.Larry CoenN136LC
> > >
> > > F
> > > om:aminetech at bluefrog.comSent:
> > > Saturday, June 20, 2009
> > > 5:31 PMTo: Velocity
> > > Aircraft Owners and
> > > Builders listSubject: Re:
> > > REFLECTOR: IVO motor
> > > I?ll try to check the
> > > current. Can the motor be
> > > removed without removing
> > > the blades?---
> > > lwcoen at hotmail.com
> > > wrote:From: ?Laurence Coen?
> > > ?lwcoen at hotmail.com?
> > > To: ?Velocity Aircraft
> > > Owners and Builders list?
> > > ?reflector at tvbf.org?
> > > Subject: Re: REFLECTOR: IVO
> > > motor
> > > Date: Sat, 20 Jun 2009
> > > 13:06:48 -0500
> > > John, I had the same thing
> > > happen to me. In my case
> > > the motor was taking
> > > excessive current. When
> > > the prop passes thru the
> > > neutral position, the motor
> > > should take about 2 amps.
> > > Mine was taking 20 amps and
> > > would stall before getting
> > > to the stops. You can
> > > check this by running the
> > > prop pitch with the engine
> > > stopped and watching the
> > > ammeter. It took three
> > > trips back to the factory
> > > to get it fixed and I?m
> > > still keeping my fingers
> > > crossed. I also talked
> > > with Ivo himself several
> > > times. He is currently
> > > living in the middle of
> > > nowhere Utah. I never liked
> > > the idea of the mechanical
> > > stops that simply stall the
> > > motor and the only way you
> > > know you have reached the
> > > limit is when the breaker
> > > pops. The current rises
> > > very rapidly when you get
> > > to the stop. I designed a
> > > current limiter circuit
> > > that shuts off the motor
> > > before it stalls and turns
> > > on a light to let you know
> > > that you are at the limit.
> > > It seems to be working
> > > well. Larry CoenN136LC
> > >
> > > F
> > > om:aminetech at bluefrog.comSent:
> > > Saturday, June 20, 2009
> > > 8:56 AMTo: Velocity
> > > Aircraft Owners and
> > > Builders listSubject:
> > > REFLECTOR: IVO motor
> > >
> > > After a few hours in the TN
> > > summer heat, my engine was
> > > back together and running
> > > well again. I made it to
> > > NY the same day in spite of
> > > T/S approaching from the
> > > west. My skills at
> > > negotiating around weather
> > > are improving, I just don?t
> > > like this learning
> > > process...Anyway, on to the
> > > next to do. I am unable to
> > > adjust my IVO pitch to
> > > either full extreme. Is
> > > there a way I can check the
> > > voltage at the motor to see
> > > it it?s a poor connection,
> > > or the motor itself? John
> > > ----------------------------
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> > >
> > >
> > > --
> > > Mike W.
> > > 1997 Velocity Elite RG
> > > Franklin /IVO Electric CS
> > > Dual GRT EFIS Synthetic
> > > Vision_______________________________________________
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> > >
> > >
> > > --
> > > Mike W.
> > > 1997 Velocity Elite RG
> > > Franklin /IVO Electric CS
> > > Dual GRT EFIS Synthetic Vision
> > >
> > > -------------------------------------------
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> > > -------------------------------------------
> > >
> > > Internal Virus Database is out of date.
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> > > Version: 8.0.175 / Virus Database: 270.12.45/2141 - Release Date: 5/29/2009 6:28 AM
> > >
> > >
> >
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> >
> >
> >
> > --
> > Mike W.
> > 1997 Velocity Elite RG
> > Franklin /IVO Electric CS
> > Dual GRT EFIS Synthetic Vision
> >
> > -----------------------------------------------------
> > _______________________________________________
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> > -----------------------------------------------------
> >
> > Internal Virus Database is out of date.
> > Checked by AVG - http://www.avg.com
> > Version: 8.0.175 / Virus Database: 270.12.45/2141 - Release Date: 5/29/2009 6:28 AM
> >
> >
>
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>
>
>
>
> --
> Mike W.
> 1997 Velocity Elite RG
> Franklin /IVO Electric CS
> Dual GRT EFIS Synthetic Vision
>
> ----------------------------------------------------------------
> _______________________________________________
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>
> ----------------------------------------------------------------
>
> Internal Virus Database is out of date.
> Checked by AVG - http://www.avg.com
> Version: 8.0.175 / Virus Database: 270.12.45/2141 - Release Date:
> 5/29/2009 6:28 AM
>
>
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