Quote Originally Posted by slicksteel View Post
1.8 ,2.5 ,3.5
2.5 -"S" was called the standard stroke "P" is for power- 3.5 if I remember right
I have never asked specifically what they stood for but it makes sense.

Original
C 1.8
S 2.5
P 3.5

Vivace
. 1.8 (special order)
.. 2.5
... 3.5
.... 4.2

You can probably change just the crank wheel but its much easier to change out the motor. Depends on how often you want to change it really. Shoot an email over to [email protected] and Karen or Ray will be able to give you the best answer in regards to changing out the crank vs a motor.

The back plates on the the new machines are all now marked with the dot system.