I bought a motorized bicycle for cheap, everything works fine, How is it that I was able to reach 62km/h with it in a straightway, the bike is stock except a spring tensioner which I installed on it. I have a speedo on the bike as well as my cellphone speedometer and both where roughly at the same speed. phone showed 60 and the speedo 62. It felt really fast an I only had a bicycle helmet then, now I’m using a motorcycle helmet…lol