<VV> Corvair Fan

[BobHelt at aol.com]

In a message dated 7/10/05 3:50:15 PM US Mountain Standard Time, 
jdozsa at carr.org writes:

> Every wonder why there are no balance weights or weigh
> balance holes on the Corvair fan?  It was done by first spin balancing
> the fan before any fan bearing mounting holes were drilled.  Then the
> production machine moved the casting to the exact balance center.  The
> casting was then drilled and bored.  Apparently the process was so good
> that a dynamic re-balance check was not needed. 
> 

I find this hard to believe. I personally have had possession of factory mag 
fans that have had small sections removed from the periphery obviously for 
balancing.
Regards,
Bob Helt