REFLECTOR: prop vibration t est

[Brian Michalk]

Johnny,

Would this testing include strain gauge testing, or is that not what is 
considered vibration testing?  Does one instrument the engine, or does 
the prop get instrumented as well?  If the engine is smooth (no bad 
vibes), then does that mean the prop is also under no vibration?

Milton Mersky wrote:
> Johnny Thompson:
>  
> Will you work with us at Vari Prop in establishing criteria for a 
> vibration test?
>  
> WE are prepared to start right away.
>  
> What do we do first
>  
> Milt
>  
> ----- Original Message -----
>
>     *From:* Johnny Thompson <mailto:14az at mysprocketmail.com>
>     *To:* Jim Agnew <mailto:Jim_Agnew_2 at yahoo.com> ; Velocity Aircraft
>     Owners and Builders list <mailto:reflector at tvbf.org>
>     *Sent:* Sunday, April 27, 2008 11:30 PM
>     *Subject:* Re: REFLECTOR: prop vibration test
>
>     Milt and all
>      
>     I have been involved in vibration testing on airplanes and
>     helicopters for over 35 years.  It is a very simple and safe
>     process that yields excellent results. Testing is done mostly in
>     R&D while smoothing the vibrations caused by props and blades is a
>     normal everyday occurrence that can be done in a couple of hours.
>     I still have  my vibration testing equipment and can perform test
>     on any type of engine and prop. Correct that, can't test the
>     Rocket Velocity.  This prop manufacture probably has his own
>     testing equipment.    Johnny Thompson   14az at mysprocketmail.com
>
>          
>          
>         ----- Original Message -----
>         *From:* Jim Agnew <mailto:jim_agnew_2 at yahoo.com>
>         *To:* Velocity Aircraft Owners and Builders list
>         <mailto:reflector at tvbf.org>
>         *Sent:* Sunday, April 27, 2008 2:27 PM
>         *Subject:* Re: REFLECTOR: prop vibration test
>
>         Milt,
>          
>         I thought Sam DaSilva said that he would test it on his V
>         (IO-360 180HP no/Counterweights, and I could on my V (IO-360
>         200HP w/Counterweights) since we are in side by side hangers. 
>         Sam has more V test time than anyone I know going back to
>         original Danny testing.
>          
>         Jim
>          
>         James F. Agnew
>         Jim_Agnew_2 at Yahoo.Com <mailto:Jim_Agnew_2 at Yahoo.Com>
>         Tampa, FL
>         Velocity 173 Elite Aircraft Completed & Flying
>
>
>         ----- Original Message ----
>         From: Milton Mersky <miltonm at airmail.net>
>         To: Velocity Reflector <reflector at awpi.com>
>         Sent: Sunday, April 27, 2008 11:39:01 AM
>         Subject: REFLECTOR: prop vibration test
>
>         Larry Morgan, owner of Vari Prop, told me he is interested in
>         securing
>         vibration tests with his prop on a Velo.?
>
>         Who in our group has the knowledge to offer expertise in an
>         acceptable
>         method of  testing.
>
>         Who in our group will offer a Velo.
>
>         Larry Morgan will supply the prop.
>
>         Milt
>
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