Charles Beijen has a rare "Yamaco" and decided to convert it to electronic ignition and change the carburettors as well.

Charles has a very nice website about this racer where you can follow the whole restoration process:

www.yamaco.tk

The Yamaha TD1B engine with the ill-fated Amal-type Mikuni carburettors with separate float chambers gave consistent trouble, so Charles converted the carburetion to modern Mikuni's with rubber manifolds.

The carburetion is very good now, as can be seen when the cylinder head is lifted from this 40 year old lady. Everything looks perfect now.

Here the old racing magneto is still fitted (and the old carburettors too)

Charles purchased a normal modern ignition without any adapters for his Yamaco. So he had to make several parts by himself, like here the base plate.

With the new adapter cone everything can now be fitted for a troubl-free race/ride!