3 ms·
I always wondered what this sound was about. https://youtu.be/TM0bOpwxxO8 https://youtu.be/TM0bOpwxxO8 Sounds like there is a steam engine inside (but the 451
by yread 9y ago
I always wondered what this sound was about.
https://youtu.be/TM0bOpwxxO8 https://youtu.be/TM0bOpwxxO8
Sounds like there is a steam engine inside (but the 451s are electrical)
- 2sk21 9y agoThose are relay contacts selecting which field windings are getting power. As the locomotive accelerates, the number of enegerqzed coils is reduced in order to reduce back EMF (electro motive force)