Here is a post from Big Jim on the new magnets in the Reedy motor.
"One thing I should mention because it will be a shock for some racers who first get this motor. Contrary to popular belief, the "notchiness" we feel when we turn the armature by hand in the motor is detrimental to it's performance. This "cog effect" as engineers call it, actually drags the motor down. It takes a certain amount of energy to overcome this notchiness and thus lowers a motor's EF. Many people associate how strong the cog effect feels to the strength of the magnets and is true when comparing two identical motors. But this cog is caused by the "unblending" of the two magnetic fields inside the motor. To some extent, is caused by the amount of distance between the tips of the armatures segments but mostly it's caused by the distance betwen the two fields of the magnets. When those magnet tips are closer together (as they are in the "Kr") they blend more which decreases the cog effect! When turning the armature in the can, the magnets feel "dead" but in actuality, they are much stronger.
Racers will have to realize the principle is much different and not associate the lack of cog to a weakness in the magnetic field of the Krypton motor."
You can find more info about this on RCCars.com. Sounds like a great bunch of motors coming out of the Reedy shop. Can't wait to try them.