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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