Previously, I've discussed how to use Power Functions to their full potential, but sometimes seeing is believing. Well this weekend I was giving the opportunity to get some video of my Power Functions powered Allegheny steam engine flexing its' muscles.
It could have pulled more, a lot more, but I had to limit the number of cars and keep the speed down because the magnetic couplers couldn't handle the load.
I swear it could pull a Buick... hmm... I may have to test that.

