Posted for Colyn Case <colyncase@earthlink.net>:

 Marv,
 
 I think there is a market for your custom lightweight fasteners.
 Are those the right size for a tsio-550?
 
 Colyn

{I don't know, don't do recips.  We have the weights made in #10 screw size, as that's what fits the holes on the Avia spinner.   <Marv>    ]



 On Feb 17, 2011, at 11:15 AM, <marv@lancair.net> <marv@lancair.net> wrote:
 
> Posted for "Kent" <kent@tulsaconnect.com>:
>
>  I wonder which brand of equipment  was used?
>  Interesting the manual cites tolerance  much tighter than industry standard.
>  
>  Do people have any idea or appreciate how much weight difference or change
>in
> location affects the balance reading?
>  
>  Is that reading a raw value or averaged value?
>  
>  An   AN960-10 washer weighs one gram.  I don't recall what the Walter
> spinner's diameter is but it is a large one, about 14-15 inches I think.
>  
>  Kent  Felkins
>  Tulsa Oklahoma
>  
>  
> [Spinner diameter on a V508 is about 18.5".  And Brian's absolutely
>correct... balance that prop down to .01 or .02 IPS and there's no detectable
>vibration at normal operating speeds.  Here at DIemech we use custom made
>lightweight fasteners for the extra light weights... typical AN hardward can't
>get you below about 3-4 grams, and that's a real problem when getting down to
>the fine tuning.  Ain't technology grand.  <Marv>   ]
>  
>  
>  ----- Original Message ----- From: "Brian Alley" <n320wt@yahoo.com>
>  To: <lml@lancaironline.net>
>  Sent: Thursday, February 17, 2011 7:04 AM
>  Subject: [LML] Prop Balance
>  
>  
> > Working on David Weinsweigs IVPT this evening with a dynamic prop balancer
>we
> >found the initial readings to be .22 ips (inches per second) at 1900 rpm.
> >After several engine runs and weight placement we were able to achieve
> >multiple readings of .01 and .02 ips at 1900 rpm. The manual says anything
> >under .05 ips is acceptable. The Walter 601EX with Avia prop is a very
>smooth
> >installation but with the prop properly balanced it should be like an
>electric
> >motor. If anyone is interested in this service, please feel free to contact
>me
> >by phone or email.
> >
> > BRIAN ALLEY (N320WT)
> > CARBON FIBER COMPOSITES
> > 101 Caroline Circle
> > Hurricane, WV 25526
> > www.carbonfibercomposites.net
> > 304-562-6800 home
> > 304-395-4932 cell
> >
> > How are you going to win by a nose if you don't stick out your neck?
> >
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