Is there a minimum radius that you can use with the Kadee #78 narrow width couplers in HO?
I am scratch building a CB&Q 0-6-0 switcher which needs to operate on curves at least as tight as 18" for switching duties and since the #78 coupler box is narrower (looks great!), I assume it would restrict the side to side swing to less that a normal #58 or #5 swings?
Thanks,
Bruce