I have been studying these early Beeps online. I guess the most famous one is the Williams U.S. Army engine.
I know that these are weak pullers, with only one motor, but I wonder what type of motor it is. I understand that these were made up until about 1982.
I saw a picture of the insides of a much earlier one by Kusan, and the motor looked like a small open frame wound motor, but not a Pullmore. I couldn't tell how many rollers it had.
Anybody have one of these? How do they run? (Like a one-motor Post War with one roller, or differently?)