[AMRadio] BTA-1R2

Rick Brashear rickbras at airmail.net
Tue May 23 16:47:21 EDT 2006

Thanks.  Mine has a porcelain coupling isolating the rheostat from the 
motor drive shaft, but what concerns me is without some kind of slip 
apparatus on the two 1 3/8" hubs that connect the rheostat shaft 
coupling to the motor drive shaft coupling it would be possible to do 
damage to either the motor or resistor if either limit were reached and 
the power still applied to the motor and gearbox.  It appears this is 
the factory installation, but maybe it's been modified?


Larry Will wrote:

> Rick,
> Its a typical WELL INSULATED flex shaft coupling with the required 
> size holes.  The full 3.1 kv B+ is on the rheostat.
> Larry W3LW

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