So looking at some Devon books got me thinking. The Devon banks are ferociously steep, 1:36 in places, and second only the Lickey Incline. Yet many photos show quite long trains , passenger and goods, ascending without assistance. I know many trains were double headed but a lot weren’t. In contrast the Lickey seems to be notorious with almost every train needing to be banked in steam days - and a fleet of banking locos, some enormous!
So what’s the difference? Length? Locus used? Curves?
Just interested in the comparison.