--- In STMFC@yahoogroups.com, "Schuyler Larrabee" <schuyler.larrabee@...> wrote:
The problem arises when people internalize the incorrect scale factor, then apply it to large dimensions. Example:
A nominal 40'-6" freightcar is 486" long. Properly scaled, that's 486/87.1 = 5.580 actual inches.
Do the same calculation using 1" = .012", and you get 486 x .012 = 5.832 actual inches.
5.832 - 5.580 = .252
.252 x 87.1 = 21.95"
You've just built a model that's almost two HO scale feet too long. And people had a fit about the Branchline 41'-6" boxcar.
All these estimations have a use, and a place where they are appropriate, but we need to realize what we are doing. Some of the recent messages here are telling me that some people might not.