But William, a loop would have been more fun !
My first Depot being a junction, had a Ballon loop for keeping East coast trains going through without reversing direction. We would turn the loco off the mainline shunt every morning and it was always a contest to see if we could hit 60mph before slowing for the last curve. Most of the loop was 180 degrees of 25 mph curve with a good straightaway for the length of the yard. Even all the locos were of the same class some picked up and ran quicker than others.
Chris
in New Zealand