Forget about chainsaw motor, let alone electric bikes! Rintendo in Osaka, Japan has made a steam-engine powered bike.
http://rintendo.com/Products/PowerAssist/jokee.htm I'm skeptical about its cost-efficiency, though. The website is in Japanese, but I put the description in DeepL Translator, and it did a good translation. Takashi -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/bbfd9fc5-90cc-4047-8838-3dd221e0c177n%40googlegroups.com.