PART TWO
Fixing one problem led me to another. The clutch was slipping against the newly restored compression, but it didn't take long to discover that there was no clearance in the operating cable. With that fixed the clutch action was much improved. When things seem that easy to address I start to worry: have I really solved the problem or just treated the symptoms? I would need to get the NSU onto the road to know for sure but waiting for the DVLA meant that might take some time.
Adjusting a rocker to restore the compression is one thing. Knowing what the clearance is supposed to be is entirely another. Finding information for a machine designed before WW2, very few of which would have been imported to the UK, was not that easy. There is info out there, but it's usually in a language I don't understand and a format that didn't lend itself to auto translation. A long internet search eventually turned up 0.3mm.
