I wish I had room for 072 curves. 042 would be max diameter with 031 for an inner loop or both for both loops. Adding whistle control to a Q or an R is simple, use the 167c whistle/direction controller. Which is what I would do, with an upgrade to diode for the whistle vs the aging rectifier disc that always slows the train down due to its voltage draw/drop. I dont mind 031, the Berkshire is happy on that, just no 027 track. I was thinking the same thing for a station set up! AD
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