Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Is Regenerative Braking Real? Does it work as we thought?

dcb · 07-12-2010, 11:41 PM

FYI, when looking at using a freewheel on my bicycle vs a fixed gear, the figure I saw was that the regen would return %18 of what you put into it, and the constant friction reduced the bikes ability to coast well beyond what you would get back from %18 of your braking energy. So most bike sized EVs opt for free-wheel.

Not an EV only problem though, hybrids have the same concern.

07-12-2010, 11:41 PM	#2 (permalink)
dcb needs more cowbell Join Date: Feb 2008 Location: ÿ Posts: 5,038 pimp mobile - '81 suzuki gs 250 t 90 day: 96.29 mpg (US) schnitzel - '01 Volkswagen Golf TDI 90 day: 53.56 mpg (US) Thanks: 158 Thanked 269 Times in 212 Posts	FYI, when looking at using a freewheel on my bicycle vs a fixed gear, the figure I saw was that the regen would return %18 of what you put into it, and the constant friction reduced the bikes ability to coast well beyond what you would get back from %18 of your braking energy. So most bike sized EVs opt for free-wheel. Not an EV only problem though, hybrids have the same concern. __________________ WINDMILLS DO NOT WORK THAT WAY!!! Last edited by dcb; 07-12-2010 at 11:47 PM..