fechter wrote:The old Xooter EX3 had a bi-directional throttle that operated regen in one direction. I don't think it would be easy to implement this kind of feature on the Infineon, but it would be a nice feature.
Any idea where we could get such a dual-direction twist-type hall throttle (center return)?
Or maybe a lever-style hall throttle (linear) to be used as a regen brake? This might be easy to make with a couple magnets, a metal strip and a linear hall sensor (as used in the twist throttles - A1302 from Allegro, digikey #620-1022-ND) mounted to an old brake lever. The chip's output changes depending on it's position between the north and south magnetic poles. Might be a fun project if nothing exists out there...
On/off type regen braking (meaning single strength) is probably usefull but also kind of limited, although if "pumping" (ramping up/down of regen power) implemented in the controller's software it would be more acceptable since we could then modulate the regen power this way.
fechter wrote:Using the regular throttle as a regen control during braking could be a problem if you were on full and suddenly let off the brake (it would go from full brake to full throttle).
I was wondering about this myself, and have read that a number of controllers force you to stop moving before changing modes (golden motors), but then force you into the permanent "engine brake" style drive/regen. No coasting. Does the infinion do regen via throttle in this manner? Knuckles showed us where we can activate it in the software interface, but I think there is also an input that can enable/disable all regen on the fly. It seems to me that to make this type of regen control safe, the controller should only do the switch to/from regen mode when the throttle is droped to zero.
I wish I could do more tests outside with both controllers, but it's about -20oC here and there's tons of snow! I'm looking into a front ski conversion and screws in the back tire to take care of this problem soon!
Norco Atomik DH bike - 3p12s Lipo (44V/15Ah), 9C rear hub, infinion/XC116 moded 6 FET (IR4110's) controller ~40A limit
2WD trail bike - 3p12s Lipo, Dual 9C hubs on 20" rims, dual moded 12 FET (IR3006's) ~100A+, 16"X3" motocross tires - A tank!
2WD road bike - 6p12s Lipo, Dual 9C hubs on 26" rims, dual moded 6 FET (IR4110's) ~70A