Hi Craig,
I have had a go at comparing the NMRA standard at: against the O14 standard at:
It looks like the O14 back-to-back (min 12.4mm) will easily clear the Sn3 max Span of 12.01mm (.473")
and the Sn3 C (CN in O14 terms) min of 13.18mm (.519") just exceeds the O14 C (13.1mm max) thus it all should work.
I would be grateful if someone could check my calculations.
John
