Originally Posted by
WeeJeem
Am with you so far.
"Intuitively obvious", eh? That's rather a dangerous phrase.
Not in the taildraggers I fly, it isn't.
A locked wheel, fully-castoring tailwheel turn in a 'dragger would have me watching my tailwheel, not my other main; so my limiting factor would be wheelbase, not track.
Assuming you can pivot on the inside main, the minimum strip width required for a turn will be track + wheel base. Whether it is a tail dragger or tricycle undercarriage will affect the technique you use to ensure all of the wheels remain on the runway at all times but not the strip width itself.