Chopper Couplings

[SapperAnt]

I am getting rather narked off with coupling chains - very faffy and not fun when trying to do some shunting.

Can anyone tell me what the min. radius is that an accuracft chopper coupling will negotiate? Obviously chains go round anything so long as there isnt any buffer lock......The curves I am using are Peco SM32.

[DLRdan]

All my accucraft wagons go round 2'6" radius curves quite happily, Ive also got the couplings fitted to my bogie coaches. They do cause a bit of friction if the centering springs are left in on the longer wagons and coaches.