It’s just a query a customer had,as he had WM50 & a WM56. 1000 & 1200 spin respectively..he said they seem to have identical boards and motors yet diff spin speeds..just got me thinking!
Those boards are programmed by the front control panel to select the model, in theory of the models are the same and parts are the same eg motor and board ten programming it to the other model would result in higher spin speed
Would have to check a few things on part finder first though.