Originally Posted by Peter M
Just what I meant,(I'm guessing the same for downhill at similar angles?) many thanks for that and for everyone who took the time to answer. I'll remember the magic 15 number first of all.
Yup - it's the same answer - up or down.
I can explain why that is ( it has feck all to do with bendy barrels
), but I'm guessing most people don't really care so I won't.