Looks as though you have a Winpower and not a Wincharger. Those two companies were rivals back in the pre-REA days.
I have a 1200 watt Winpower that was most likely made under the Miller Airlite name before Winpower bought them out.
This machine came from my uncle's farm and was part of what gave me the wind generator "bug" at a young age. It was a survivor that was still in tact atop it's 60', 3 legged freestanding tower, minus the blades. The blades were removed decades prior to me coming along and were stored in the rafters of an outbuilding so they were in great shape. I rebuilt this machine in my high school years and actually flew it again on my uncle's farm for about 3 years before "growing up" and moving away. These are really great machines and those somewhat knowledgeable in the pre-REA turbines consider the Winpower to be between the Jacobs and the Wincharger in terms of status. These are heavy duty direct drive machines with variable pitch, but not quite as heavy in physical weight compared to the Jacobs units. Your turbine will indeed be needing the flyweights to govern correctly. Wind pressure along with the governor geometry will naturally cause the machine to attempt to govern but it will be overspeeding before it does so. They are mounted on the downwind side of the blade via one of the blade mounting bolts. Your governor is very similar to the one I have, but looks a bit more modern.
The voltage on your machine is also most likely 32 volt. These 32 volt machines will run on a 24 volt system at reduced wattage or on a 48 volt system at a slightly higher wattage without any modifications. I ran my Winpower on a 24 volt system when I had it flying.
My uncle was kind enough to give me this machine prior to me "growing up" and moving away from the area after graduating high school. I took the entire thing down piece by piece (including the 60' tower) without anything but a rope, pulley, couple wrenches and a lot of guts. It then sat in storage for over a decade before my wife and I purchased our acreage. A few years ago, my uncle passed away from cancer and I decided to pull the machine out and set it up on display in my shop, next to some of my other unique machines on display, in his memory. If I had a second unit, I would fly it in a heartbeat. They are great turbines and can take a beating.
Take a look at windcharger.org (not .com) as they have a lot of history on these old machines that may be somewhat helpful.
Corey