LI-ghtcycle
10 MW
Ok, I have used LiPo for years, and I just don't care for all the extra concerns/maintenance, so now that I am foraging into higher voltage Li-Ion, I have noticed a trend.
It would seem lots high powered builds go to about 20 - 24s and then make up the rest in amps.
Is it just not practical to go the other direction and make your watts with higher voltage?
I am looking to put around 7200w through a Cro-Motor (at that time I will start using a CA v3 & statorade to keep things from over-heating using 40s 4p using 2x this battery from Lunacycles: http://lunacycle.com/72v-panasonic-pf-11-6ah-with-luna-charger/ )
For example, I understand that one of the strengths of LiPo is that you can get extremely high amp output, so it makes sense if that is your main power source, in my case, I would like to see if there are controllers that would do something along the line of:
40s 4p Li-Ion, so roughly 160v hot off the charger, and limiting amps to 50?
The reason I ask is I'm not looking to make a record breaker necessarily, but I would like to have a couple of these batteries:
(72v Panasionic PF 11.6ah 20s 4p)
http://lunacycle.com/72v-panasonic-pf-11-6ah-with-luna-charger/
And have the option of running them in parallel (20s 8p) for every-day riding/pulling a trailer for work, and then when we want to goto EV Events, be able to run that same set-up with the batteries in series, (40s 4p) at a race track and push 50 MPH+.
Is this practical?
The other reason is the BMS on these batteries is rated at 50amp continuous, and IIRC, higher amp BMS generally drive the cost up dramatically, or is it the other way around where higher voltage for the controller becomes impractically expensive and thus people stay lower voltage (around 80 - 100v) and make the rest up with amps?
I am not looking to make a moped wheel/motorcycle tire burn-out machine (at least not with this bike! ) and I am wanting to test the limits of our very heavy built 24" bicycle wheels with Nuvinci hub, and since we are running a Cro-Motor as mid-drive, I might have to put a moped tire on the back for track days, but other than that, I am hoping to be able to keep our current heavy-built bicycle set-up as is.
I had a Eureka moment looking at this build:
https://www.electricbike.com/marks-cromotor-phatrod/
And realized motor and battery wise, we have a very close to the same set-up. (Ours would NEVER be in the same universe as far as Mark's amazing custom build however! Kudos!)
Thoughts?
Thanks!
It would seem lots high powered builds go to about 20 - 24s and then make up the rest in amps.
Is it just not practical to go the other direction and make your watts with higher voltage?
I am looking to put around 7200w through a Cro-Motor (at that time I will start using a CA v3 & statorade to keep things from over-heating using 40s 4p using 2x this battery from Lunacycles: http://lunacycle.com/72v-panasonic-pf-11-6ah-with-luna-charger/ )
For example, I understand that one of the strengths of LiPo is that you can get extremely high amp output, so it makes sense if that is your main power source, in my case, I would like to see if there are controllers that would do something along the line of:
40s 4p Li-Ion, so roughly 160v hot off the charger, and limiting amps to 50?
The reason I ask is I'm not looking to make a record breaker necessarily, but I would like to have a couple of these batteries:
(72v Panasionic PF 11.6ah 20s 4p)
http://lunacycle.com/72v-panasonic-pf-11-6ah-with-luna-charger/
And have the option of running them in parallel (20s 8p) for every-day riding/pulling a trailer for work, and then when we want to goto EV Events, be able to run that same set-up with the batteries in series, (40s 4p) at a race track and push 50 MPH+.
Is this practical?
The other reason is the BMS on these batteries is rated at 50amp continuous, and IIRC, higher amp BMS generally drive the cost up dramatically, or is it the other way around where higher voltage for the controller becomes impractically expensive and thus people stay lower voltage (around 80 - 100v) and make the rest up with amps?
I am not looking to make a moped wheel/motorcycle tire burn-out machine (at least not with this bike! ) and I am wanting to test the limits of our very heavy built 24" bicycle wheels with Nuvinci hub, and since we are running a Cro-Motor as mid-drive, I might have to put a moped tire on the back for track days, but other than that, I am hoping to be able to keep our current heavy-built bicycle set-up as is.
I had a Eureka moment looking at this build:
https://www.electricbike.com/marks-cromotor-phatrod/
And realized motor and battery wise, we have a very close to the same set-up. (Ours would NEVER be in the same universe as far as Mark's amazing custom build however! Kudos!)
Thoughts?
Thanks!