totally agreed, the first time i went on ride i made sure that the brakes work good !
These brakes are extreme. They just JAMM the wheels right there.
TWO things (the engines internal friction/momentum wastage) + (BRAKES) stop the bike.
ONE thing that limits it is the (speed itself).
Your thinking is very very good ! & fortunately i have gone through many discussions on forums .
Any one who will try to make such a bike, today or tomorrow, may read a few of RULES i learnt as i built it :
1. Making a bicycle work via engine is equally important as its capability to get stopped via brakes.
2. It is a cycle with an engine. a motored bike. Know its limitations.
3. Never go for judging the top speeds. Never speed race it . After all you must know the last point where the brakes will give up.
4. Wear a helmet .(which i do)
5. Always have an ENGINE STOP electrical button. So that just in case things go wrong engine can be killed.
6. Reflector stickers , Horn, front and rear LIGHTS are saviours in the dark. Use them.
7. When it rains , slow down to speeds that the thin cycle tyres and brakes can bear . Better shift to cycling mode.
------ i shall update the latest pictures soon..