Yea, I know the servo would be the correct way but also the most expensive way. Before I buy the AC motor and drive I may take time to search ebay for a 3HP servo with a controller. But it would have to have single phase 220 input. I currently have a 2 HP 4300 rpm DC brushed motor from a tread mill. Not real sure how reliable this motor would be. Its real light weight.
Still waiting on the mill. |