small mill, easy to find parts

hi everyone, I just got off a 55 minute phone call with a guy having trouble tring to figure out all the info from 4 sellers on a controller for a 5-9amp output pma. his comment was, each sellers info conflicted with each others info and I feel like its all bull shit. well after talking for a few minutes he was right, all bull shit, they wanted to sell him a 440amp controller and 500w waist resistors for the dump , this was a rip him off sales pitch. the other wanted to sell him a 60amp controller, a little over kill for a 9amp max output pma. im glad he called because he dosnt need to buy anyones controller . at this output of 10 amp and under all you need is a motorcycle regulator/rectifier unit from a 600cc or larger motorcycle, these units can handle 20amp all day long when mounted to a heat sink. they rectify and regulate the voltage to battery charge voltage just like the bike would only at a lesser rate because of the incoming charge is lower than the bike would be. I have used one for 2 years and was removed and the mill was wired to my newer system. the unit still works fine and is used regularly on my test bench for the smaller mills. the guys mill is 9.1 amp max output at 1495rpm, I know I built and tested this unit, he knows to overdrive this unit as was told when he bought the unit. but like many are new to wind and need to ask as many questions as possible and weed out the bs. one note if your going to use the motorcycle regulator you MUST run a ground wire from the reg mount bolt hole to the battery negative post, this is how they sense the regulation voltage. the small mills only need small controllers . no dump loads needed with the small ones and the motorcycle reg at 10 amps, like my rule to live by--home work--home work-- home work-- and when not sure ask a lot of questions. hope this helps anyone in this type of problem. thanks for reading.