REFLECTOR: IVO motor
John Dibble
aminetech at bluefrog.com
Tue Jun 23 11:32:07 CDT 2009
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
> >
> > From: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
> >
> > From: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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> > 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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