Elevated chain stay bikes were supposed to eliminate chain suck which it did but at the expense of a heavier and more complicated frame. Eventually, frame makers decided this minor advantage wasn't worth the extra effort (although it did make cleaning the chain easier!). Ellison was a smaller manufacturer out of Texas in the early 1990's and it looks like he just worked in aluminum. The bike features the 1.25" head tube and a polished finish. Parts are pretty standard Shimano Deore XT with Rapid Fire shifters.
More details and pictures on the Ellison Page:
The FFB Blog future
5 years ago