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Battery communication is mostly a matter of having enough wires strung to the cells: Most ebike BMS are only wired to sets of cells, rather than each cell individually; when wired together, you can only tell the state of each set, not it's individual cells, & have to take on faith that the...

You want the Canbus version? Any particular reason?

While I do agree that a good safe battery is worth a lot of added cost, ovt's not hallucinating that in general prices have gone up more than costs, & due to what I'm guessing is a bit of relative rarity compared to other case types, prepacked Dorado cases are showing some markup compared to...

Also note that so long as the 52V battery's maximum charge voltage does not make the controller complain of over-voltage, a 48V controller with a 52V battery gets more MPH per watt because the 52V battery doesn't sag below the 48V system's optimum. In most cases where a 48V controller is not...

It's not just a matter of losing peak torque availability, either: A motor like the m620 runs much cooler at 60V×17a=1020W than at 48V×21a=1008W. Any heat is wasted Ah. Lower voltage means more waste. In such cases, a 48V controller pulling ≤30a from a 14s6p pack, will get more Ah per cell...

Indeed, current needed to hold a given speed, roughly doubles every ~10 MPH or so, over ~15 MPH. So, something like 3, 6, 12, 24, 48, 100 %... except buffed quite a bit at the low end to account for all the non-aero-related drag that predominates at low speeds? Perhaps notably, I find that...

And if you weigh less than 60Kg, bounce on that front pedal! Yank up on those handlebars like you're lifting barbell weights! For smaller riders, applying 60Kg of weight to the front pedal, could be legitimately challenging. (For those of us who weigh more than 60Kg / 133lbs, maxing out the...

I'm splitting hairs again here, but technically the g510 m620 Ultra's motor-controller could be configured for a variety of torque sensors. The spline-shaft sensor it comes with, has a limit of 60Kg. (I would love to fit it with a 120Kg sensor, if I could find one compatible with the...

I hate having to change PAS mode just for changes in speed (as opposed to a change in the amount of assist I "feel"). The feeling of uniform acceleration from a given pedal force, even as my speed \drag increases, is why I like being able to tweak those SpdXX settings on the torque tab. I...

I'm just getting to this thread. Great work so far! I think this information could really help m620 owners\builders who see it. An early note regarding paragraph 4: This represents the voltage output of the controller torque sensor when no force is being applied to the pedals. Also note that...

I mean, if you're getting different results please post them here as it's critically relevant to this thread; but I can only suspect there might be different UART controller firmware setups out there, if lowering your Display's speed limit lowers the MPH at which assist ends yet doesn't lower...

Because we still need to shift. If we were talking about a single-speed rear-end, it's true that cadence alone could achieve most of the assist scaling we'd need relative to final speed (though speed data would still be very useful); once cadence got high, there'd be nothing to do but try to...

If I could actually get normal products, scaled up 30%...

I saw that statement, but all I can say is that the UART m620 on the 48V Frey AM1000 v5 which we received, definitely bases "Spd20" on the MPH reported, not the motor RPM. I don't know where he got the idea that the Spd columns go by RPM, because that literally wouldn't work in any useful way...

Regardless of what speedometer settings are applied in the Config Tool app, so long as the "Speed Limited" field on the Pedal Assist tab is set to "By Display's Command" then the Spd20 settings come into effect at 20% of the speed limit set in my display. The display we've got increments in...

Yes. Spline shaft load cell sensor in crank gives a value between ~750mV at 0 load, & ~3240mV at max load (4300 would be nice, but nope). I do seem to get about 60Kg on the front pedal before reaching that max reading, & my 12 Kg of resting leg reads ~1270mV right in the middle of the "10-15Kg"...

Hi! Great to see someone else researching exactly what each of these settings actually do. I'll try to clarify, without getting long-winded: 1. The adjustable span of each "Delta Voltage" field (for instance, adjusting the span of mV that shall be assessed as 0-5Kg), allows us to...

Based on the fact that smaller devices show unusual charge-status indicators as well, it probably is a bad connection (or a bad 5v board). One tiny bit of good news is that 5V 1A limited connections probably won't start a fire; but that's not certain since it could be shorting to something...

Hi Jenny, Sorry if this has already been answered here, but could you tell me the approximate internal dimensions of the Dorado 505L case? I know it's not a uniform rectangle inside, so I wanted to model it in 3D; but I don't know the angle or depth of the ends of the case.

I definitely find a non-linear increase in power output, to be absolutely essential for smoothly scaling response. One of the main things I prize about the UART configurable m620 motor+controllers, is the ability to adjust a lot more than just raw percentile of output: Being able to set...