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From BAFANG motor source.

Yes

If you do want to do this then Grin is close to you and they know what they are doing. But as noted, airlines are flakey in following their own rules and many gate agents don't know the rules.

What kinda travel can the Woom 3 have Here it comes "daddy can I have a ZEB 38 for my birthday?" :)

The cup should not need to be glued in. The ZS zero stack cup presses in like any other pressed in cup. Then the bearing just drops in. The only reason that the cup might be glued in is that the headtube is not properly round etc. I would inquire to szzs as to why it was glued in and what kind...

I don't build my own battery packs because it can be dangerous. That said yes you need the full voltage required by the specified motor voltage. But you can get there any combination the ends up with 48v. I can't answer any of your other questions. Another approach, although it might not be...

Friuli-Venezia Giulia or Alto Adige?

I will give you that if you are riding motor out of the design range then 48v is going to allow you to run more into the red zone. The M820 is a lightweight low power motor in anybody's book. Every other motor in the Bafang range has more power. The BBSHD is a 750w motor. It is all a matter of...

@daniele @ficorama

neither the Shimano e8000 nor the EP8 is a full size motor. The Bafang 620 is a full size motor. The effect of the heat and how it is removed does make a difference. It would make no difference how much heat was produced if it was all removed by cryo cooling etc. The heatsinking is there to...

The m820 is not a full size motor and I don't buy the 78% less heat at 48v. The heat affecting the motor is dependent on the heat sinking. You can't calculate the potential heat savings without taking into consideration the removal of heat. Just compare the weight of the M820 compared to one of...

from JimLee's conversation with Bafang. "About the DIY battery, lots of peoples want the bigger battery, 720wh, 840wh, 960wh, the more the better, but please note, 1. This is an electric assist bicycle, electric energy is only auxiliary and should not be the main force, Use your feet to move...

All the conditions really need to be known before one can speculate. Bafang said that these were not designed to operate in Boost for extended periods of time.

The point is that if the 36v motor is designed correctly then the 48v having less heat will not make any difference, if they are basically the same motor. If the 48v is different and has smaller conductors it may not make any dif. The question then is what motors are having "problems" 36, 43 or 48?

No way to know. mu

But if the motors are all using materials for the 36v then then the 48v will not have any lower heat than the 36v. Given that the heat dissipation was adequate for 36v it is going to be just as adeqaute at 48v. There is probably more lifetime issues with the level they allow to discharge the...

Heat is generated by resistance. The resistance in the conductors. The larger the conductor the less resistance. Current itself does not generate heat. It is current flowing against a resistance. Less resistance less heat. Bigger(heavier) and better conductor the less resistance. If you are...

This is an old discussion in the thread and it was brought up, that for economy of scale, most likely the conductors are not modified from the original 36v version and hence there is no savings in weight with the higher voltage versions. I suspect this is correct.

It is not going to be less heat if the conductors are properly sized for the amperage.

Most likely but there have been different versions of bosche cranks over the years. Also you have to be concerned with "Q". How close the pedals are to the frame. Also, of course, crank length.