Boxford Model B lathe rebuild

[jonnydeen]

after receiving questions about the motor mount from onecut i decided to take a few pictures and try to explain the counter-shaft assembly


this is the assembly (minus the counter-shaft primary pulley) with motor loosely in position
the motor is a modern-ish 1ph 1/2hp 1480 rpm
the motor's footprint was slightly off for this fitment, but that was soon cured by drilling and filing the rear 2 mounting holes.
if the motor's footprint is significantly different then an adaptor plate would need to be fabricated
the main thing to make sure of when fitting a motor is to make sure pulleys are as parallel as possible


both belts are tensioned by a single lever that mounts between the assembly and the back of the headstock





here we can see the counter-shaft primary pulley, this lathe originally had a set of 2 speed pulleys delivering power from the motor to the counter-shaft (giving 16 spindle speeds) this modern equivalent certainly does the job but limits me to 8 speeds. i plan on running a 3ph motor with a vfd in the near future so i wont bother sourcing/ machining a 2 speed set of pulleys




one thing to note, the csb model has a different "simplified" counter-shaft design