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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...

A few advisories about that: 1) Innotrace X1 controllers for the m620, generally replace a UART controller, not a CANBus unit. The controller, display, & battery, all need to use the same communication protocol. (I believe also the brake indicators & throttle...) Confirm compatibility before...

Rich configurability in their UART controllers, was one of the biggest advantages to building a Bafang-based ebike. The super basic two-slider adjustment, offered to some dealers via the BESST tool, doesn't come close to the old typo-laden Bafang Config Tool. Lack of technical research among...

No: Cells are wired together with metal plates or strips to form a battery (preferably via pure-nickel strips (or platinum, etc)), but a secondary set of wires are required, if each cell is to be individually measured for charge & balanced (brought to level with the other cells). Even...

I've been wondering about that: I didn't see any mention of swapping MOSFETs or capacitors, for the few 52V m620 ebikes I've seen hawked... Would be great to get confirmation that battery + firmware flash are all that's actually required to move from 48V to 52V? (m620s seem to run cooler at same...

The Dorado style case (along with many others) is easily available through Jenny Mao who's very active on these forums... The case is great. The case is not a problem; what's inside the case could be: Neither Frey nor Biktrix nor any other ebikes priced within $1000 of the components on the...

In the case of m620 motor+controllers, you'll surely want the UART version, if you are starting from scratch. Note that any "house shaped" connectors rather than round ones, are typically seen alongside CANBus motor+controllers. I understand you may have display & throttle already? If so...

I'm still trying to get a trike for my Mom (who keeps busier than anyone else I know), but they're so expensive!

My condolences! I had extreme cartilage wear before my hip fracture: After six months with no weight on my right leg, finally getting back on a bike really aided my recovery (It's always been the case for me that I can ride with a lot less pain than I can walk). I hope you make an astounding...