I'd like to get some EZ Apps. I have a question. Does anyone ever have their shell off and know how much space is available between the shell and the circuit board? 5mm? 10mm? Do any EZ App locos have more headroom above the board than others? Or is there basically no overhead space on any of them?
I don't think you'll have a problem fitting in a Bluetooth decoder, dimensionally, they are similar in size to a dcc decoder. There should be enough room inside the shells of most diesels.