[dagskarlsen]

Thank you Dave! You are more skilled than me on this, I have learned almost everything by my-selves, trying, failing, measuring, comparing, and discussing on internet when that became common. On the magneto pictured in my post, it will be enough to press the crank shaft in, on the German field telephones (FF-33), you need to pull, but the switch will operate without turning the handle. I guess the common resistance of the generator winding will be 300-500 ohms.

dsk