Grusstie Theo,
with regards to post #1, I think the term is 'twin leading shoe brakes'.
Have you made any changes to the C5 before putting on the road?
I was once controlled by the police, luckily on a private car park, he was just curious about the C5, BUT he did say "Nice, but don't let me catch you on the road, as it stands it's not road legal". I did some checking in the IN and came up with the following:
For Mofa registation, a twist grip or thumb lever speed control is mandatory, motor cut-off swiches fitted to all braking systems (so you don't power drive against the brakes), turn indicators, horn, brake lights, 25 kmh cut-off if driven without a licence, crash helmet. I also found under under electric vehiles that a speed control is mandatory. The C5 may have been produced in 85, but still comes under the regulations that were in force at that time. Because of this I decided on a pedelec conversion.
I know of a lot of people driving standard C5s on the roads here and have never had any problems. But, Ottobrunn is not large and with one warning I'm not going to take any chances, if impounded there is a good change that I will loose the C5.
Servus.
KarlG.