Heavy Twins

Hi all.

I'm having a bit of a problem with my 1964 Atlas. I have a K2F magneto converted to a Thorspark EI. I bought the bike back in September last year. It came with the Thorspark fitted and has always been a sod to start/keep going.

Hi

Hello

So being a newbie to the qwerks and wonders of classic bikes...

The DSN lists lots of piston changes.  But Haynes notes that the barrel height changed in 1960.  Higher and lower compression pistons continued but the high ratio went up and the low compression pistons now gave CR nearly as high as the high compr

The speedo drive on my '58 99 only seems to be engaged in the rear wheel gear when I unscrew it from the speedo and gently pull it. When screwed in and engaged in the speedo it isn't engaged.

Any clever tips for a leaking screw in petrol tap ? I bought new good quality Taps with the rubber and metal washers but no mater what I do they still `weep` . It looks like the petrol is finding a way down the threads.

I had posted about my silencer which was hanging loose because the bolts had vibrated themselves off the bike and it was hanging loose. 

I am restoring a Norton Dominator 1955 88 Deluxe

Can anyone help me? I have an oil pressure problem on my 1949 Norton Dominator model 7. When I start the engine cold the pressure goes up to 100 Lbs. When the engine is hot the pressure drops to 10 Lbs and sometimes even 0 Lbs. I use SAE50 oil.