gwhy!
100 kW
Please can anyone please tell me how easy is it to incorperate regen braking using a rc setup.
Thanks.
Thanks.
gwhy! said:Please can anyone please tell me how easy is it to incorperate regen braking using a rc setup.
gwhy! said:Please can anyone please tell me how easy is it to incorporate regen braking using a rc setup.
Thanks.
erth64net said:I doubt you'd want to; your inertial energy is so low, compared to a car/truck, that the energy requirements (human or electric) of always powering your movement, vs just freewheeling...well...there doesn't appear to be any notable ROI.
safe said:The motors we use can't regen anything close to that.
CNCAddict said:Hmmm. The motors are not the limit in ebikes right now, it's the battery and controller. To recharge a battery you need to somehow generate voltages higher than the battery terminal voltage. Doing this with any PM motor is not very easy.
It just seems to me that at best you can get as much back as you put in when you are trying to maintain a constant speed with a regen system.recumpence said:Every person I read about on-line (all 3 of them :wink: ) that used regen on a bike regretted it and ultimately went to a freewheel setup because you regain far less power using regen than you lose in not being able to coast. Unless you are going down hill for long periods of time, regen is not as efficient as coasting to increase your distance per charge.
safe said:It just seems to me that at best you can get as much back as you put in when you are trying to maintain a constant speed with a regen system.recumpence said:Every person I read about on-line (all 3 of them :wink: ) that used regen on a bike regretted it and ultimately went to a freewheel setup because you regain far less power using regen than you lose in not being able to coast. Unless you are going down hill for long periods of time, regen is not as efficient as coasting to increase your distance per charge.
On Justin's regen thread he's claiming that he actually achieves MORE regen than motor input... which seems impossible. :?
(this is why everyone thinks it's "cool")
Free energy... that has to be good. :lol:
swbluto said:safe said:It just seems to me that at best you can get as much back as you put in when you are trying to maintain a constant speed with a regen system.recumpence said:Every person I read about on-line (all 3 of them :wink: ) that used regen on a bike regretted it and ultimately went to a freewheel setup because you regain far less power using regen than you lose in not being able to coast. Unless you are going down hill for long periods of time, regen is not as efficient as coasting to increase your distance per charge.
On Justin's regen thread he's claiming that he actually achieves MORE regen than motor input... which seems impossible. :?
(this is why everyone thinks it's "cool")
Free energy... that has to be good. :lol:
He's a pretty smart guy when it comes to electronics and physics. I think you might have misunderstood him(or the electronics or physics) because I'm sure he's well aware of the implications of extracting more energy than what one inputs.
My understanding of trials riding is there is a lot of lurching and hopping that takes place. Normally the throttle is cracked wide open for a second, then instantly the brakes are applied. If there was some way for the motor to act as the brake and regen capture everything that would increase your riding time.gwhy! said:Motor braking would be a big plus for a E-trials bike quite rightly as recumpence has said even if no regen is used.
recumpence said:Regeneration on a bicycle can give a very limited amount of energy recapture into the battery. For very long decents it can be good, or even needed, to save brakes from overworking such as long mountain decents or very long hills. For typical in town riding, there is far more benefit to merely coasting to conserve kinetic energy.
I think you just summed up my point better than I was able to do... hmmm... good job.gogo said:Its the energy of braking that regen captures. That energy is otherwise dissipated in waste heat through friction braking. If you don't use brakes at all then freewheeling is more efficient.