Hub motor overheating?

[Prodcat]

I am upgrade my scooter from 48V to 60V.
and I have a problem with my hub motor getting hot to about 75 degrees after driving 4-5 miles.

here is info.

Battery:
60V 30Ah Lithium Battery pack
* Voltage : 60V
* Capacity: 30Ah
* Cut-off voltage: 50V
* Max. discharging current: 100 Amp
* Max Continuous Discharging Amperage: 50Amps
* Rated Discharging Amperage: 40 Amps

Controller:
[Voltage) : 36v-84v
(Power) : 2500w
[Current Limit) : Rated current 45A, maximum output 50A.

Fat hub motor:
60v72v 3000w, controller 60v 72v, max current 50A, 12MOS

Please advise, thank you.

 

[thebes]

75c is well within the operating limits for most hubs, generally the recommended cuttoff is 120c and 150c is the 'max' limit, though do note this might be a bit lower on cheapo hubs but your temps still arent really worrying. If you do want to improve cooling you can use hubsinks in combination with statorade. Would make sure that grins hubsinks will fit before ordering them though, if they dont you can find cheaper variations on aliexpress/alibaba that will fit on a wider range of hub diameters.

 

[E-HP]

I am upgrade my scooter from 48V to 60V.
and I have a problem with my hub motor getting hot to about 75 degrees after driving 4-5 miles.

Are you riding the same route at the same speed? If you’re riding faster, that’s more power, which means more heat.

Controller:
[Voltage) : 36v-84v
(Power) : 2500w
[Current Limit) : Rated current 45A, maximum output 50A.

Fat hub motor:
60v72v 3000w, controller 60v 72v, max current 50A, 12MOS

Looks like you swapped controllers (not sure why), so perhaps the wiring or parameters are off. Is the motor sensored?