What are the requirements for a historic license plate?

Hello, I'm currently considering whether it's worth re-registering my motorcycle (a 1982 Hercules 80 AC) after such a long time. I was wondering if I could get a historic license plate for it. So far, I've only replaced the spark plug and the kickstarter; everything else is still in original condition. The motorcycle is still…

The scooter runs but does not respond to the gas and does not move. What is the problem?

First of all: I converted my 4-stroke from 50 to 80cc, so far only replacing the cylinder. Everything's been running smoothly. Now, while driving at full speed, there was a sudden bang, and since then, it won't respond to the accelerator or move at all. The alternator is running, so it's probably not the belt?…