Phil Van Treese
In Tomiki, "elbow power" is called "Hiriki" and moves up the center of an opponent. We always do Hiriki in class and it shows when my students go to seminars of a different style. Coupled with the movement of hiriki is the use and movement of the wrist. Sounds simple but it isn't.
Which brings us neatly back to the original post:
Interesting tidbit - pointed out by one of my guys.
He was looking through "Budo: Teachings of the Founder of Aikido" (the John Stevens translation), and mentioned that he couldn't find any mention of "Elbow Power".
So I looked through the original Japanese and sure enough there was:
"49. Elbow Power Development"
The translation in "Budo: Teachings of the Founder of Aikido":
"49. Developing Arm Power"
So...Kenji Tomiki and Gozo Shioda both translated "Hiriki" as "Elbow Power" - but we see that not only has it mostly vanished as a core concept from modern Aikido, but what is usually considered the canonical translation is...wrong.
Isn't that interesting?