@dkdkrd posted:I suspect that packaging electronics-sandwiches and Chubby-Buddy speakers in a toy train Vanderbilt tender is not nearly as easy as into a nice spacious hexahedron.
That's correct, not nearly as much space. I still managed to stuff a BPRC receiver, battery, on/off switch, and charging jack in the 2 tenders I built from scratch. The design of a Vanderbilt tender makes it more difficult to get into the inside unless properly designed. The 2 I have, the rear of the water tank pops off:
I'm sure the engineers that design our models could easily determine how it needs to be done. With a rectangular tender we simply remove a couple of screws and pop the shell off.