Schwinn Foldable e-bike

[The7]

Recently I bought a new Schwinn foldable e-bike form Canadian Tire in Vancouver BC Canada. The e-bike has an Quality Assurnce Certificate from Currie Tech Inc of CA 91311. Seemingly it is one of Currie production.
It has 16" wheels with a hub motor and 24V12AH SLA battery.
The riding is OK but the max speed on flat is about 20 km/h.

Would like to seek your experts advice on:
1) What is the type of the hub motor? Bushless? Internal geared?
2) Is there any way to increase the max speed on flat?

 

[Lowell]

If the rear dropouts are 135mm wide, you can probably fit any of the popular bicycle hub motors, such as the Crystalyte 4 or 5 series. Do you know what the voltage rating on the controller is?

 

[xyster]

Would like to seek your experts advice on:
1) What is the type of the hub motor? Bushless? Internal geared?

Can't tell from the outside. Can you either post a link to this bike's spec info, or a picture of the controller? Can you tell how many wires go from the controller to the motor? If 2 wires, then it's brushed, if 3 or more, then it's brushless.

2) Is there any way to increase the max speed on flat?

Currie's other 24 volt controllers handle 36 volts fine. If that's also true of this Currie, then the easiest way to increase speed is to add another 12v12ah battery in series, and charge it with it's own 12 volt charger, or charger all three with a 36v SLA charger. 50% higher voltage will increase top speed about 50% too (from 20kph to 30kph in this bike's case).
Regardless of type, the motor will almost certainly handle the extra voltage, though if this is a brushed hubmotor, it may get a lot hotter, and you might not be able to run it full throttle indefinitely.

 

[The7]

The Hub Motor is a bushless type as noted from its controller.
It has 3 wires for the motor wiring and 5 wires for the hall sensors.