Origin Of The Species.



Out of curiosity does anyone know where these Happy-Time 2-stroke engines originated from.
Are they Chinese clones of something else,or genuine Chinese engines in their own right.
A friend said he saw a moped magazine on the internet from the 1950's.It was in a foreign language but on the front cover was a HT engine.
I use my bug on a daily basis and i figured it wouldn't hurt to know it's beginnings......Chinese or what? :confused:
It is my understanding they are copies of a russian design from long ago... Anyone got the 'for sure' scoop on this?