So stripping the 916 ready for a rebuild.
Had next door sitting on the bike to undo the RHS hub nut was still lifting hin up and he’s 16 stone, but with a breaker bar and heat it worked.
However the sprocket nut took a couple of hour!
Heat with a lorry 1in drive two handed impect with the compressor wound up to a dangerouse 190 psi didnt shift it 
Tried a schafolding bar…no
Finally befor i got the dremel out and cutting discs resulted to a lump hammer on the end of the bar and a couple of instant shocks.
Hit anything long enough and hard enough with a hammer and it will do what you want 