3 ms·
It is. Motors that can regen also 'cog' if you're out of power, which sucks. It turns out it's a lot more comfortable to just have a freewheel system that can
by Baeocystin 5y ago
It is. Motors that can regen also 'cog' if you're out of power, which sucks. It turns out it's a lot more comfortable to just have a freewheel system that can coast without any extra friction. The extra energy recoverable otherwise just isn't worth the tradeoff.
- jbay808 5y agoIt should scarcely cost any power to cancel the cogging torque though, wouldn't it? Can't you just keep a small percentage of the battery in reserve for that purpose?
- Baeocystin 5y agoNo matter what you do, you still have the ultimate potential endpoint of being stuck out somewhere with a dead battery pack and an annoying ride home compared to a freewheel system. (It's worth mentioning that the other main reason you don't see regen used much on bikes is that freewheel systems allow the use of gearing, which greatly improves starting torque, which really is what matters for ebiking comfort. Direct drive systems are less efficient, so they are already starting from behind the curve with regards to making regen worthwhile.) https://www.bikeberry.com/pages/direct-drive-vs-geared https://www.bikeberry.com/pages/direct-drive-vs-geared