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How do i find this |
The point is - they specified 2,500W peak, they’re not going out and buying a 5,000W controller |
They’re going to put something in that runs at its specified maximum |
Same with the battery |
Let me ask another question |
How would i delimit the speed of the bike from the controller |
And how would you switch out the controller entirely for something you could program? |
I just checked the cells |
They’re using 35E |
They are running the cells at their maximum rated discharge |
Yeah |
So in other words, you could not reasonably increase the power from that battery |
I still figure that a motor with that power should be able to do more than 35 |
You would be surprised - going 40 takes about 3,000W |
Give or take |
Also, you might just be hitting the back-emf limit of the motor. |
How do you know there is even a limit? |
In many cases there is not |
Not sure exactly what motor they're using to fact-check that, but 35mph is a believable peak hub motor speed at 52v. That's about where my custom build tops out, even though it has plenty of power to theoretically go faster. |
^ |
Given that they say the top speed is "35mph**+**", it sounds like there isn't a software limit to bypass. |
@KHAN So0mething to note is that top speed changes as the battery is used |
so it's unlikely they're limiting it |
they choose a lower figure |
so that people don't run the battery down, and then accuse them of lying |
because they reported the maximum possible fully charged speed |
I would imagine the max speed is 37 or 38 |
What would i have to do to make it 10-15 mph faster? |
Double the power at least |
Gut it and start over. |
^ |
Also that |
For reference, the Sur Ron does about the speed you mentioned |
it has twice as much power |
You need a more powerful, larger motor, because that "1500w" geared hub will overheat at the power you're asking for. |
You need a new controller that's WAY more powerful. |
And you need a much beefier battery. |
ud need a 3-5kw, high kv setup (or higher voltage) |
That bike is very well balanced, in that every important part of it maxes out at roughly 35mph. |
There just isn't *one* thing to change to get that much more speed out of it, and certainly not reliably or safely. |
yep overhaul needed for htat |
thx |
What kind of battery/chemistry would you recommend given the frame size |
you know, what you're looking for already exists in the Onyx RCR |
^^^ |
I believe that has exactly the specs you were thinking of |
it has better suspension |
better drivetrain |
better frame |
and to my mind represents a much better value |
hmm thx |
The only upside that the bandit has is that you can get a legal plate |
I believe the Onyx can be registered as a moped |
it can |
it has moto tires and brakes if i remmber correctly |
and just needs some lights for rego |
Really??? |
https://www.reddit.com/r/DMV/comments/od8hab/registering_an_onyx_rcr_electric_moped/ |
yeah |
Could you do it with california laws? |
Yes |
Ik california laws can be strict |
california is only strict with emissions |
obviously we ain't got that shit sooo, just gotta have all your lights and a mirror, good braking, DOT parts etc |
it's pretty laid back compared to some European countries that actually regulate EMF |
anyone with an ass bac controller should be careful |
yeah just saw that on HV |
bet its ppl not using precharge |
and disabling their BMS for more powa |
sur ron users: |
lol |
yeah this is 100% surron users |
'bms safety protocols disabled' why is that even a thing you can do lol |
because ppl dum |
Yes, people are dumb, that is why you don't let them disable safety protocols lol |
1) Buy surron |
2) Upgrade motor controller |
3) Realise BMS can't handle the current so bypass it on discharge side |
4) Happy days |
lol. |
You know what the real fun fact of that is @Akbar |
real EV's don't have BMS discharge protection.. |
Its too much of a pain to switch that much power to the motor on/off, so they just direct the motor not to run instead. |
sometimes you have both |
(SOme may not even have a way to disconnect the battery outside of the disconect for firefighters/servicing) |
that's what I'm going to do with the home battery storage project. BMS communicates with the inverter and tells it to cutoff |
and it's a lifepo4 battery so it will share SoC information |
Pretty much. |
but the BMS will have a contactor so it can shutoff as secondary protection |
Heh. |
The bus batteries for example that I got |
they have a 'BMS' on them... |
for monitoring the cells/balancing... |
Absolutely 0 circuity in series with the battery. |
(Yes, first thing I did was throw that trash BMS out lol) |
I have seen some very weird BMS |
distributed bms |
each cell gets a monitor thing attached to it |
what the heck is a vacuum contactor anyway |
lol. |
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