I was asked Zoodles95 to tear down and compare these two movements during a routine service so we can see just what are the differences between these two movements:
(Note: the top,or right-hand image will always be the CL-888 and the bottom, or left-hand image will be the ST16.)
Here are the two movements in there respective cases, the CL-888 in a large black Swiss Legend; the ST16 in a smaller Seagull.
The first thing done was check the timing of the two:
Beat error - 0.9 ms
Rate - +6.00 (dial up), +21.5 (crown down)
Beat error - 1.5 ms
Rate - -7.2 (dial up), -11 (crown down)
Both of these rates are acceptable, and should average within my preferred band of +/- 10 s/d.
Now we start withe the actual disassembly of the movements. For those who wish to see the actual steps taken I refer you to the WUS thread titled "Inside an ST16 (lot's of images)", where did a step-by-step on the disassembly of this movement.
I thought there would be some differences between the two, but, as you will see in the following pictures, there isn't.
Bridge for the 2nd Wheel
Auto-winding Reduction gear
"Magic Fingers" for auto-winding
Click/Click spring combination and hack lever
Here is the only difference I found:
The CL-888 had two second hand pinion tension springs.
My comments in a moment, for right now, I'll let your modems cool back down.