At 17:40 23 June 2013, Soartech wrote:
Wondering if anyone here has experience with a mercury auto-balancing
accessory for prop vibration reduction on their self-launcher,
ultralight,
etc.
www.balancemasters.com/ultralights

I achieved a considerable improvement in vibration after using
a double straight edge and a central spindle.
The prop overhauled by a prop shop was 4 gm (at the tip)
out of balance.

JMF