Ive done a couple of waist foil assist builds and discovered that being able to disconnect the pack is handy. Also the areas where the phase wire flexes are weak points… so being able to replace a section of it is super handy too.
So this requires connectors… but my question is, does anyone know how much drain they are on current?
From my RC days, we would avoid connectors at all cost unless absolutely necessary… but we were trying to eek out every last mA of power and i dont know with these much higher power systems if the effect is as significant.
I am also looking at other options… like avoiding the breaking cable with proper strain relief and thick rubber/heatshrink to make bends not so tight. And also.a better leash setup. With these i think i could almost eliminate the need for phase connectors excepr for disconnectingnthe pack.
Absolutly zero! In principle it is exactly zero! However there is some other aspects here…
First the basics: In any series connection the current is the same through the whole circuit (let’s not involve Maxwells equations, practically irrelevant here).
What you might loose in a series connection is voltage. So if you are not maxing out dutycycle the connector will not affect current. You will loose som voltage that will be compensated from motordriver by raising voltage (duty) to reach current request (still under requirement that duty cycle do not max out). The voltage loss will result in power loss in connector → which will be heat. As long as this heat is not significant compared to you power consumed from battery you will not loose ride time.
Other as long connector don’t overheat but still significant power loss, you loose ride time (energy in battery) but not motorcurrent/torque or motorpower.
This was probably because these systems (especially old DC and NiCd/NiMh systems) did often run at max duty (DC at 100%) and therefore the voltage loss resulted in loss of current.
