Originally Posted By: jkh
i would think the obvious reason would be back lash. The break actually locks it self in.
Let's not for get the heat that would be generated inside it as it would turn at many FPM. Imagine a 20 floor run at 800+ fpm.

It's just not a good fit!

I don't think that would be a problem especially in a worm gear drive here is a video of a Sedgwick dumbwaiter load break https://www.youtube.com/watch?v=s-ud6UYeA6g