Nortons - General

This seems an odd issue to me, I've found nothing similar anywhere as yet.

Having an issue with the Monobloc 389 mounted on my Dad's JAPton special.

I see a lot and Gearboxes and Engines advertised as 'Built by Dave Coates' - who's he?

I't's bloody tight - is it a left or right hand nut?

My '61 ES2, resleeved and bored to 40 thou only 250 km ago, has turned its new oil (GTX 30/50) black. It is not a heavy carbon black, rather like it has been stained.

Modern (rubbish) petrol, over a moth old. Can this be ascribed to running weaker than new stuff?

No guesses, maybes, or buts please. Any facts?

Have Norton ever had crankshaft centerline offset to bore centerline? Called desaxe engines. A principle known and used as early as the thirties, maybe even earlier. Gaining popularity nowadays.

Hi,

Would anyone be able to help me with identifying this Norton, please?
It belonged to my great uncle.

The journey of how i came about to be one of the judges at the recent Aberfoyle rally in Scotland started two years ago at the first Solstice rally after seeing what bikes won and how they arrived at the rally site.

I'm looking for some Laydown gearbox casings and see quite a few with broken bottom lugs - are these from non Featherbed models?

Is there anywhere I can read up on the Laydown gearbox?