about this motor:
crossbreak wrote:bzhwindtalker wrote:If someone is searching for a big block GNG style motor, this seems to be a good solution (just received and mesured)
http://e-bike-diffusion.com/index.php?m ... _num%253D1
Has 50mm long x 80mm diameter rotor, small lams (quite rusted on mine...) big phases to boot and 120mm inner case diameter
150€ shipped via air mail is not bad at all!
Awesome, it has 12magnets! What means small lams? 0.3mm? Any info about KV and no load current?
114mm is a little wide though. still doable. If it is as good as it sounds, this will be my first single speed, single reduction reardrive motor... my Shimano hub with 219 sprocket adapter is still waiting for a proper engine.
Info from ebay.
crossbreak wrote:I read 34.7KV for this BIG Block alternative from your graph.
Max speed around 60kph, max hill climb gain of 30.6% or 17° for 40A battery and 100A phase current. This means it will output 28Nm of torque at the shaft at 100A Phase current Nice figures... I think I will go for it.
Edit: In this 4:1 geared config it should behaves like a geared hub drive with 8.7KV. So equal to a BMC V_1 (it has about the same weight and 8.4KV geared in the ebikes.ca simulator).
A BMC V1 has more magnets and more reduction, but I guess it has less copper. So this single speed config should behave the same in the simulator, except-> it will barely overheat
this is a graph for 72V and 40a of the BMC V1
crossbreak wrote:ok now I compare BMC_v1 and this GNG big block alternative geared 4:1 @48V. Both at 270rpm ...which one is "bigger"?? Which one has more torque at this rpm?? they have about the same KV.
the big block alternative has 60Nm. The BMC_V1 has 45Nm. Seems like it is "weaker"