The three phase motor that this Champion mill is fitted with does look to be the original motor fitted from new, its external appearance is the same as the single phase motors that they were usually supplied with during that period.
I do recall Chester demonstrating one of these Champion mills fitted with a variable speed inverter at one of the Model Engineering exhibitions, must have been at least 25 years ago.
Mgnbuk is correct in his assessment of these early Champion milling machines, when new they were somewhat rough and ready and rather crude in places with no real feel of quality, although the price was quite low. The table was quite good though with a nice ground finish and Tee slots that extended past the coolant troughs and right up to the ends of the table. The tilting milling head was opperated by a worm gear which was an unusual addition on such a low cost machine. I agree that a £1400 asking price for one of these mills is rather excessive.
Edited By Lathejack on 14/09/2020 20:50:38
Edited By Lathejack on 14/09/2020 21:09:00