Hi Gadge, DeeJay and Dramapig
Firstly I'm not trying to push anyone while their down as that's not my style, only helping here I hope ?
I'd be pretty confident that the clutch is more than likely the last of the Alloy type captive cotter units that were used still in the early Rover days until the twin set screw unit was designed and put into production around the time of the full Rover 45 machines.
Gadge is probably in the mindset of the earlier cast iron captive cotter units that are nearly indestructible until hit with a hammer by a novice. They are the biggest gold nugget on the early SB units and I'd crawl over hot coals to gain more of them.
If you look closely at that photo you'll see that both clutch halves are alloy, which indicates it's of the later variant.
BTW Just finished a job this morning on a cast iron unit that had the cotter done up too tight and then hit with a hammer by some novice twitt (previous tenant as DJ calls them), lucky I just happened to have a spare cast iron unit on hand to keep the 20 inch solid deck all original.
Cheers,
BB
