REFLECTOR: Reflector Digest, Vol 110, Issue 11

Fri May 9 11:59:46 CDT 2014

I have an Ivo on my Franklin, I can see a forward/backward tracking, but
that must be optical illusion, since the prop is smooth as silk.

I have another blade that they made me, but that one is not as smooth, so
it must be balancing of the prop.
I am stunned at that IVO prop, I have flown 190 hours, torque has been
stable for 100 hours, blades look like new, and not replaced copper
contacts yet.

Wim Huisman
N59WH

On Friday, May 9, 2014, <reflector-request at tvbf.org> wrote:

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> Today's Topics:
>
>    1.  Vibration. (Kurt Winker)
>    2. Re:  Vibration. (Brian Michalk)
>    3. Re:  Vibration. (Mike Dawson)
>    4. Re:  Vibration. (John Dibble)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 8 May 2014 23:18:15 -0600
> From: Kurt Winker <nmflyer1 at aol.com <javascript:;>>
> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org<javascript:;>
> >
> Subject: REFLECTOR: Vibration.
> Message-ID: <0E471023-BCED-42DB-8674-9426FA251672 at aol.com <javascript:;>>
> Content-Type: text/plain; charset="us-ascii"
>
> Looking for input. Engine ran fine w-out the prop. Started it with the
> prop....wicked vibration.
> Took prop off.. Vibration gone.
> Sent prop back to IVO....1-blade was 1-gram out of balance.  They
> corrected & returned.
> Since I noticed that, when viewed from the side, the blade disk tracking
> seemed to move for & aft when you looked at the top of the disk.
> When I got the blades back, I reassembled & reinstalled. Then I checked
> the blade tracking. Was off a tad, and I corrected that. Also checked the
> blade angle with a protractor, and all seemed good.
> Looking for things to check.
> Engine: 4.3l- V6 90-degree engine...
> Belt drive reduction unit:  1.7:1 ratio.
> 76"- 3-blade.
>
> The fact that the blade track for-aft seems to change, really gets my
> attention.
> Changing RPM doesn't help...the vibration increases in frequency with rpm,
> but no better or worse.
> Changing the prop pitch has no effect.
>
> All else is well.... Hope I can figure this part out.
>
> View from the side:   GOPR0004 <http://m.youtube.com/watch?v=Nr-KLXgco38>.
>
>
> Kurt
>
> Sent from my iPad
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> ------------------------------
>
> Message: 2
> Date: Fri, 09 May 2014 07:29:53 -0500
> From: Brian Michalk <michalk at awpi.com <javascript:;>>
> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org<javascript:;>
> >
> Subject: Re: REFLECTOR: Vibration.
> Message-ID: <536CCA41.40106 at awpi.com <javascript:;>>
> Content-Type: text/plain; charset="iso-8859-1"; Format="flowed"
>
> Mike Deeter had a blade tracking issue and vibration problem as well.
>
> In his door open event, a blade was damaged, which he replaced with a
> new one from IVO.  IVO said it matched his other blades, but the problem
> was that the root thickness where it's clamped was thicker than the
> other two blades.  This puts the acme rod and motor in a bind and can
> lead to galling of the aluminum-steel bearing surfaces.
>
> We finally convinced IVO that this was a problem.  He sent back all
> three blades insisting that they make them the same.  I think IVO sent
> back three new blades.  The tracking and vibration problem went away.
>
> Mike's tracking error was on the order of .5" max.  Yours looks much
> worse.  You should easily be able to see some gaps in your warped crush
> plate.
>
> On 05/09/2014 12:18 AM, Kurt Winker wrote:
> > Looking for input. Engine ran fine w-out the prop. Started it with the
> > prop....wicked vibration.
> > Took prop off.. Vibration gone.
> > Sent prop back to IVO....1-blade was 1-gram out of balance.  They
> > corrected & returned.
> > Since I noticed that, when viewed from the side, the blade disk
> > tracking seemed to move for & aft when you looked at the top of the disk.
> > When I got the blades back, I reassembled & reinstalled. Then I
> > checked the blade tracking. Was off a tad, and I corrected that. Also
> > checked the blade angle with a protractor, and all seemed good.
> > Looking for things to check.
> > Engine: 4.3l- V6 90-degree engine...
> > Belt drive reduction unit:  1.7:1 ratio.
> > 76"- 3-blade.
> >
> > The fact that the blade track for-aft seems to change, really gets my
> > attention.
> > Changing RPM doesn't help...the vibration increases in frequency with
> > rpm, but no better or worse.
> > Changing the prop pitch has no effect.
> >
> > All else is well.... Hope I can figure this part out.
> >
> > View from the side: GOPR0004 <http://m.youtube.com/watch?v=Nr-KLXgco38>.
> >
> >
> > Kurt
> >
> > Sent from my iPad
> >
> >
> > _______________________________________________
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> http://www.tvbf.org/mailman/listinfo/reflector
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> ------------------------------
>
> Message: 3
> Date: Fri, 9 May 2014 06:19:03 -0700 (PDT)
> From: Mike Dawson <medawson250 at yahoo.com <javascript:;>>
> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org<javascript:;>
> >
> Subject: Re: REFLECTOR: Vibration.
> Message-ID:
>         <1399641543.69040.YahooMailNeo at web141704.mail.bf1.yahoo.com<javascript:;>
> >
> Content-Type: text/plain; charset="iso-8859-1"
>
> Kurt,
> Can you send that video clip to IVO??Maybe they have seen this action
> before.
> ?
> Mike
> N104DD
> On Friday, May 9, 2014 5:34 AM, Brian Michalk <michalk at awpi.com<javascript:;>>
> wrote:
>
> Mike Deeter had a blade tracking issue and vibration problem as well.
>
> In his door open event, a blade was damaged, which he replaced
>       with a new one from IVO.? IVO said it matched his other blades,
>       but the problem was that the root thickness where it's clamped was
>       thicker than the other two blades.? This puts the acme rod and
>       motor in a bind and can lead to galling of the aluminum-steel
>       bearing surfaces.
>
> We finally convinced IVO that this was a problem.? He sent back
>       all three blades insisting that they make them the same.? I think
>       IVO sent back three new blades.? The tracking and vibration
>       problem went away.
>
> Mike's tracking error was on the order of .5" max.? Yours looks
>       much worse.? You should easily be able to see some gaps in your
>       warped crush plate.
>
> On 05/09/2014 12:18 AM, Kurt Winker wrote:
>
> Looking for input. Engine ran fine w-out the prop. Started it with the
> prop....wicked vibration.?
> >Took prop off.. Vibration gone.?
> >Sent prop back to IVO....1-blade was 1-gram out of balance. ?They
> corrected & returned.?
> >Since I noticed that, when viewed from the side, the blade disk tracking
> seemed to move for & aft when you looked at the top of the disk.?
> >When I got the blades back, I reassembled & reinstalled. Then I checked
> the blade tracking. Was off a tad, and I corrected that. Also checked the
> blade angle with a protractor, and all seemed good.?
> >Looking for things to check.?
> >Engine: 4.3l- V6 90-degree engine...?
> >Belt drive reduction unit: ?1.7:1 ratio.
> >76"- 3-blade.?
> >
> >
> >The fact that the blade track for-aft seems to change, really gets my
> attention.?
> >Changing RPM doesn't help...the vibration increases in frequency with
> rpm, but no better or worse.
> >Changing the prop pitch has no effect.?
> >
> >
> >All else is well.... Hope I can figure this part out.?
> >
> >
> >View from the side: ??GOPR0004 <http://m.youtube.com/watch?v=Nr-KLXgco38>
> .?
> >
> >
> >
> >
> >Kurt?
> >
> >Sent from my iPad
> >
> >
> >_______________________________________________
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> ------------------------------
>
> Message: 4
> Date: Fri, 09 May 2014 08:29:00 -0500
> From: John Dibble <aminetech at bluefrog.com <javascript:;>>
> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org<javascript:;>
> >
> Subject: Re: REFLECTOR: Vibration.
> Message-ID: <536CD81C.8020907 at bluefrog.com <javascript:;>>
> Content-Type: text/plain; charset="iso-8859-1"; Format="flowed"
>
> I have a spare set of blades if you want to see what good tracking
> blades will do.
>
> John
>
> On 5/9/2014 12:18 AM, Kurt Winker wrote:
> > Looking for input. Engine ran fine w-out the prop. Started it with the
> > prop....wicked vibration.
> > Took prop off.. Vibration gone.
> > Sent prop back to IVO....1-blade was 1-gram out of balance.  They
> > corrected & returned.
> > Since I noticed that, when viewed from the side, the blade disk
> > tracking seemed to move for & aft when you looked at the top of the disk.
> > When I got the blades back, I reassembled & reinstalled. Then I
> > checked the blade tracking. Was off a tad, and I corrected that. Also
> > checked the blade angle with a protractor, and all seemed good.
> > Looking for things to check.
> > Engine: 4.3l- V6 90-degree engine...
> > Belt drive reduction unit:  1.7:1 ratio.
> > 76"- 3-blade.
> >
> > The fact that the blade track for-aft seems to change, really gets my
> > attention.
> > Changing RPM doesn't help...the vibration increases in frequency with
> > rpm, but no better or worse.
> > Changing the prop pitch has no effect.
> >
> > All else is well.... Hope I can figure this part out.
> >
> > View from the side: GOPR0004 <http://m.youtube.com/watch?v=Nr-KLXgco38>.
> >
> >
> > Kurt
> >
> > Sent from my iPad
> >
> >
> > _______________________________________________
> > To change your email address, visit
> http://www.tvbf.org/mailman/listinfo/reflector
> >
> > Visit the gallery!  www.tvbf.org/gallery
> > user:pw = tvbf:jamaicangoose
> > Check new archives: www.tvbf.org/pipermail
> > Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
>
>
>
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> End of Reflector Digest, Vol 110, Issue 11
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