The cam is very special but it can be bought 
in Germany. It is a copy of the original 
NSU SportMax cam.
The upper cam on the picture is a standard.

The springs are extra powerfull 0,3 mm 
thicker in the wire.It is possible to get them
 from Holland.
As they are thicker in the wire it is nessescary 
to produce new springholders both on the top
 and in the bottom. The upper ones can be 
done considerable lighter.