dogman wrote:Setting it up Amberwolf style makes a lot of sense too. Have one brake handle do nothing but activate the regen. The other runs your front brake.
As long as you have enough space on hte bars for two handles next to each other, it works ok (although if you don't have a rear brake at all, using that handle for the regen would also work. Additionally, I did that with a relay once, so the switch in the scooter handle for the brake light also operated the relay that then switched the ebrake/regen too).
The more I think about it, I think I will add another switch to turn on the regen all the way down a big hill. Flip the switch, drop in. A handlebar switch with horn button and a light switch would do it perfect.
One thing to keep in mind: If you have a toggle switch for it, you don't have any motor power until you remember to flip it back off & the time elapses to move your finger back to the switch and do that, plus time for the controller to switch back out of braking mode. So as long as nothing happens that requires sudden burst of power instead of braking, that would work great.
Also, remember that long periods of regen, if at high power, could overheat your motor or controller--I don't know how any particular controller does regen waveforms, timing, etc., but let's pretend that one controller doesn't do regen nearly as efficiently as it does motoring, so that 200W recovered power means 400W or more of heat from wasted power in the controller and motor--sustained braking might well destroy something.
I don't remember who it was now, but there was an ES member that did overheat a motor with regen braking on a long downhill. Can't remember if it was just fried halls or actually damaged windings.
Sorry to interrupt with more devil's advocate stuff, but I've put myself thru enough that I figure it's better safe to say it than sorry I didn't.
EDIT: also, in my typical city riding, commutes/etc., regen nets me between 2-3% back, with the frequent complete stops I have ot make. I expect if I had long downhills steep enough to require braking anyway, it might be more.