Moin, I got a hercules prima 4 with 1 gear automatic, this was last registered in 1996 therefore I revise everything. I noticed now that I have a translation of 11 teeth at the front of the pinion and 36 at the rear of the chain wheel, but according to the internet these mopeds have 45 or 47 teeth depending on bj, which makes me a bit stutzig because my chain wheel looks quite original and was not somehow installed afterwards. Therefore my question whether someone knows this with Is original to me or someone did something later. Lg