Larry Jaques wrote:
....
How could the inertial mass of the blade and aluminum wheel (under 10
pounds would be my highest guess) cause any more tension on the frame
than the tension adjustment spring, which is in the hundreds of
pounds? I still don't buy it, but I would like to hear the Griz
tech's explanation.

It's not the inertial mass we're talking about here...it's the extra
torque exerted by the larger motor when more force is exerted
(particularly suddenly) by the blade through the material...