Asian vs Swiss Rotor

[jdkno]

I have an A7750 powered Chrono and a 2824-2 powered SOSF. I opened both of them up and noticed the rotor on the A7750 spins freely, however the 2824-2 does not. I made the comparison because I know with different movements while wearing the 7750 I can acctually feel the watch move from the rotor spinng and I did not feel that while wearing the SOSF.

Don't get me wrong the rotor in the SOSF does move but not nearly as freely as the 7750 does. For example if you lightly try to rotate (about 1/8") the rotor in the 2824 it will acctually spring back to where it was if you let off. However if you push it it will turn and when shaking my wrist if I put my ear to it I can hear the rotor turning it just seems alot tighter than the 7750 is. So far the SOSF has not stopped running so I know it must be working just wondering if it is normal or not.

[FxrAndy]

The 2824 winds in both directions so does not move as easily, the 7750 only wind in one and is free to rotate in the other, 7750 also has greater circumference and there for more rotating mass too.