Dave,


Thank you for your positive remark on the Bolly props.
I checked those that I sent - there was no need to balance them.

About that four-wheel balancer... To accurately balance a prop, it is necessary to verify each of the four wheels is itself perfectly balanced.

This kind of adds four more 'degrees of freedom' to the balancing act... It is a good thing it must only be done once.

A magnetic balancer must have its hub in perfect balance...


I would more easily trust a finger-tip balancer.