Hi, I successfully built the AR2 arm (in PLA) a few years ago and am now re-visiting the project with a view to updating to AR3 using most of the AR2 parts. Is it possible to just buy the motors with extended shafts and use them with the existing AR2 gearboxes? Has any one tried adapting the AR2 motors and gearboxes so that encoders can be fitted ? Is there a cheaper alternative to the specified encoders ? Thanks, Keith Emerson
