R69S stops after 10Km

[Alun rees]

Hi Guys, I managed to get the bike to stop on its own again and took some measurements on the coil. the primary now showed 98 ohms and the seconary 26.8 kohms. I checked all my old coils and found on average 0.5 ohms on the primary and 26.6 - 26.8 K on the secondary. I managed to start the bike and checked the coil again - 0.5 ohms on the primary. Conclusion - another expensive junk coil! Anybody know how good the MZ-B units are?

Regards and thanks for all your help.
Alun.

[gus]

I need info on the difference between early r 69s model and the later model (1966-1969)