Shaft points cb77

[Keith762]

Hi
I am building a 1965 cb77 out of bits but cannot get the points timing right.
Does the points shaft have one lobe or two opposite each other?
Keith based in UK

[Tim Allman]

Neither. There are two lobes but if you look at the cam followers on the points you will see that they are 90° apart. This is because of the 180° offset on the crankshaft. (The camshaft rotates at half the speed of the crankshaft.)