Originally Posted by
Duragrouch
They're too fast. 20 mph may be ok for a mature adult, assuming training, but kids should be limited 15 mph, and require training for an e-bike. Kids have poor judgment, and usually cannot manually ride sustained over 15 mph.
Above 20 mph should require motorcycle-level training and license, even for adults. Energy = (1/2) x mass x velocity squared.
another article to add to all of this is what Wired wrote about concerning these bikes, not gonna be pretty:
https://www.wired.com/story/why-is-i...x-newtab-en-us
did i mention that i prefer my old classic steel bicycles bought used? see you all on C and E forums, where sanity still reigns.