REFLECTOR: IVO motor

John Dibble aminetech at bluefrog.com
Mon Jun 22 13:17:31 CDT 2009


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 motor
>      Date: 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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