I've begun the planning stages for this year's O gauge layout at the Redford Theatre in Detroit, MI. Last year my RMT Beep and a Lionel Thomas did the honors of pulling the trains. This year I'm thinking about buying a Polar Express berkshire to replace the Thomas set. I know the early ones had smaller motors and Lionel redesigned the frames to use a bigger motor in the later ones. It'll be running a little over 4 hours each weekend between December and the beginning of January (an hour before each show and a half hour at intermission, 3 shows/weekend) pulling a fairly short freight train. My RMT Beep pulled about 7 cars last year. Last year the layout was about 8x12 and we were considering making it a bit bigger this year. That all depends on whether another member of the group is able to loan some of his stuff for the season. Otherwise it'll be the same size. The polar express would be on a loop around the perimeter.
I usually spend a whole Saturday at the theatre just to run the trains and talk to visitors attending the shows. In between the matinee and evening show I spend some time doing maintenance on the locomotives and rolling stock.
So what should I know about the Polar Express berkshire?
Here's a video of last years layout for a visual of what it'll be dealing with.