As with so many questions in life; it depends.
4ft is often quoted as the desirable minimum but you should be able to get down to 2ft 6in in EM without too much bother.
It depends what you’re running, how fast you’re running it and how much side play is built into the axles.
8 or 10 coupled locos are going to be a an issue but 0-4-0’s will go down to less than that.
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Droppers from point blades to TOU
by David Mylchreest
4 days, 3 hours ago
by Philip Hall
1 week, 3 days ago
Andrew Barclay 0-4-0ST in EM
by Nick Ridgway
1 month, 1 week ago
heljan aec railcar
by Jonathan Alldridge
1 month, 2 weeks ago
Rapido SE&CR 5 & 7 plank wagons.
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