Originally Posted by pnz
Yes it is, if I am going to fast I may pass a brewery and may not be able to stop.
That got a giggle from me....thanks. Back to your question; you could adjust your throttle cable so that it would not pull the slide as far. That would be simple but not as convenient as your idea of a switch. Obviously it would require an adjustment whenever the youngsters would ride. Possibly there are some electronic gurus out there who could design such a thing as a rev limiter for a Chinese 2 stroke...but it ain't me. I suppose if I were faced with your problem I'd look at designing a manual device to attach to the twist grip throttle to limit how far it could be twisted. It could be easily attached and removed at your preference. Just my thoughts.