Isn't the video inaccurate about the force of current pumps near maximum compression? The power put into the system by the motor is constant throughout the ent

Isn't the video inaccurate about the force of current pumps near maximum compression? The power put into the system by the motor is constant throughout the entire revolution. It follows that, since the piston moves slower near maximum compression, force increases (since power = force * speed). This is also intuitively the case: You need much more force to push back the piston (against a constant motor torque) near its apex because the moment arm of the crank shaft gets smaller and smaller. Yes, at the maximum compression point the force is not well-defined. In a sense it is infinite (you could not actually turn the rotor by pushing on the piston). But certainly not zero. I'm struggling to understand what the creator might have meant instead. It's not work or power (which, again, is constant). The rotary motion works, if anything, in favor of the system, as the force gets larger with compression (past the midway point). Is there some quantity I'm missing? Maybe something to do with gas laws? I'm also skeptical about the illustration with the additional magnets to contain the magnetic field lines. As drawn, that would not work for AC as the magnetic field would be the wrong way around half the time. Maybe they just use extra iron to shape the field - but that is extremely far from being innovative and more like electrical engineering 101. It could well be that I'm missing something, but overall this video had multiple strange explanations that lower my confidence in the overall accuracy of the reporting...