Good video, but theres a slight inaccuracy with the A1 rotators. The rotators that you said began production in 1954 after the so called "slim rotators" were around since 1952 (case and point: T121/T122 and T128). They weren't used as often as the slim rotators, but they eventually replaced the slim rotators in 1954. I also believe the slim rotators were used on 3 phase units while the wider rotators were used on single phase units for the A1s until 1954. That's a theory, it hasn't been confirmed though. Lastly, on the 2001s, they did not reuse the slim rotator box. It was the same width but not the same height. It has the height of the A2 box, but the width of the slim box.
Not sure how I forgot about the single phase jailbar rotators but thanks for correction! I've always noticed with the "slim rotators" and the 2001 rotators, they looked to be the same height, but nonetheless the design idea circled back around.
Good video, but theres a slight inaccuracy with the A1 rotators.
The rotators that you said began production in 1954 after the so called "slim rotators" were around since 1952 (case and point: T121/T122 and T128). They weren't used as often as the slim rotators, but they eventually replaced the slim rotators in 1954.
I also believe the slim rotators were used on 3 phase units while the wider rotators were used on single phase units for the A1s until 1954. That's a theory, it hasn't been confirmed though.
Lastly, on the 2001s, they did not reuse the slim rotator box. It was the same width but not the same height. It has the height of the A2 box, but the width of the slim box.
Not sure how I forgot about the single phase jailbar rotators but thanks for correction! I've always noticed with the "slim rotators" and the 2001 rotators, they looked to be the same height, but nonetheless the design idea circled back around.