I think a 3 phase converter will give you about 70 % of the motor's hp. It has to do with power factors and efficiency. My dad used to make converters for farmers. He would take a lathe and shave off some of the armature on the motor used to make the 3 phase. He also make static converters using 2 different banks of capacitors. One bank was the starting capacitors and the other were the running capacitors. I forget what the rule was for capacitor size/hp. He would use adjustable timers and motor contactors to connect the start caps for about 1 second and then another motor contactor to pick up the run caps. After you got the motors under load, it was a matter of fine tunning the total capacitor size to minimize the current draw. He would also install bleeder resistors to drain the caps before restarting the motor.
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Today's Featured Article - George's Fordson Major - by Anthony West (UK). This is a bit of a technical info to add on to the article about George's Major in the "A Towny Goes Plowing" article. George bought his Major from a an implement sale about 18 years ago for £200.00. There is no known history regarding its origins or what service it had done, but the following work was undertaken by Harold alone to bring it up to show standard. From the engine number, it was found that the major was produced late 19
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