I am new but but I found this site when searching Kalkhoff Impulse issues, of which there seem to be many. I am in dispute with 50 Cycles who supplied my wife's bike- a Tasman i8. It seems that 50 cycles have given up on the Kalkhoff franchise - think I read that on here. My attempt to contact Matt Goodes ( general Manager ) on his return from vacation elicited the response that he was no longer with the company. This set alarm bells ringing. According to Companies House ( Gov website ) the original company trading as 50 Cycles Ltd went into CVA in January this year. They have obviously continued to trade ( I got another replacement motor in May ) but a new company- 50 Cycles Distribution Ltd was incorporated in September of this year. Not sure what this all means yet but Caveat Emptor applies.