" jls" wrote in message
...

Homebuilders do this themselves with a homemade vibrator and paint. You
slide a flexible wire rod up and down a scale on the device attached to
your
aircraft until it vibrates, then balance with paint on the lighter tip.
You
find the lighter tip and diminish the vibration by trial and error. Not
as
expensive but works. There are drawings and instructions somewhere on
the
net, maybe at the Mooney Mite or Culver site.

I found the article at
http://www.mooneymite.com/articles/f...ncingprops.htm

Rich S.