In that case a 36V500W would be ideal. I don't need the extra watts of the 750W version and the lower cadence makes it easier to drive. The preferred cadence of the 48V is just too high.tahustvedt wrote:I seriously doubt they use different windings for the different BBS02 stators. It would increase cost a lot for Bafang. The 36 V motor already spins slower than the 48 V motor, probably because of the lower voltage. Unless Bafang confirms that they actually use different windings on the different BBS02 motors then it's pretty safe to assume they use the same windings for all BBS02 motors. They probably have ready would stators with the same number of windings.cell_man wrote:Bafang adjust the speed of the motor according to the supply voltage and rated power output, they are not all the same, but all BBS02 use the same stator and rotor (so far as i know). My guess is that they might have made the 250W BBS02, 25A Kit with a slower wound motor and adjusted the controller settings, or maybe they didn't bother to change the speed of the motor, and only changed the software settings. Frankly I'm really not too sure, just speculating. The odd customer has complained the 250W BBS01 is too slow (pedal cadence, not the speed on the road), but nobody ever says that about the higher power versions.tahustvedt wrote:I think so too. Aren't all BBS02 the same motor and windings? The 48 V motors run at an RPM that corresponds to the voltage increase over 36 V.cell_man wrote: I am sure it is basically a 36V 500W BBS02 underneath (with maybe a different motor winding). if 8Fun adjusted the speed and programming at the customers request, then it is perfectly correct for the kit to state what it does, it is not lying. I think we could get something similar if we requested it.
All 25A BBS02 controllers share most of the same main parts, no matter if 36 or 48V, but are some some small component changes to differentiate the 36/48V. i do not believe the differences between 36 and 48V controllers is only software or firmware.
I did go for the 48V originally because the triangle packs by Paul only come in 48V.