DisneyTrainFan75, I think your numbers are a bit off. While 55% is not far off, I think it should be 44.6%. I did this quickly but I think I have it right.
I have been meaning to put together the Disney Experience MSS for years (after putting together his excellent Sleeping Beauty Castle Model in HO scale). So I had all the parts on my computer and I am familiar with scaling in Photoshop having done the Castle and the Haunted Dimension's H.M.
Note: I use 1/87th for HO scale (the Schuco's say they are 1/90th, but I think 1/87th is the "official" scale).
I have a blueprint of MSS that says the front door is 7 foot 0 inches or 84 inches. So in HO scale this comes to about 0.9655 inches.
I pulled in the D.E. Part page #10 which has the MSS front door on it and measured it in Photoshop. It came to 1.983 inches.
So the model needs to be scaled to 0.96/1.983 = 44.6% (approximately). I scaled the model to 44.6% and got 0.966 which is very close to the 1/87th of 84 inches.
Hope this helps,
Thanks a bunch, Karl. Glad I wasn't too far off and at least in the ball park there. I'm also thinking I might tackle the Haunted Mansion as well in HO scale later on down the road.
So, 44.6% it is !!