[A/S] Re: New Suburban furnace VS catalitic

["Philip Piper" <pmpiper@xxxxxxxxxxx>]

If I can't change the rotation direction by either polarity or brush 
location then how? 
Keeping in mind that the current flows through one field winding then 
through the brush to the armature winding out the other brush and 
then to the other field winding. If I move the brushes 90 deg. 
wouldn't that change the relationship between the armature and field 
windings causing it to rotate the other way? Or do I just put the 
shaft on the other end of the armature?
Phil Piper