I'm extending my small garden line. What is the smallest radius that a six coupled tank engine (Jinty) and a 4-4-2T (Precursor) will go round? Until recently, I had a B1 but I got the Jinty instead. The existing point is way too short. B1 and Precursor won't go round it, and the Jinty will only go with some "persuasion".
Thanks!