If you were to go down to the bottom of the header bar you will find a site called Wattflyer. If you go there and sign up then do a little searching there is a fellow there that does a bunch of the Sterling planes as E powered RC. It may take just a bit of effort on your part but I'm sure you can find him.
If you bothered to pull up the Fly RC web site you could read and down load the articles yourself and have this information on hand. Sometimes a little effort is a good thing.