1500W vs 3000W motor

[hybride]

Hi all,

I drive a Escooter with 1500Watt motor, 48V lifopo4 accu and a 12 FET Lyen controller

At (120%) max speed is 52.8 kmh (about 43A)

I can buy a 3000 Watt motor and i wonder if there is any experience what to expect in force and speed with 48V.

Thx,

Hans

[amberwolf]

What changes will you be making to the controller and batteries to deliver the higher power to the motor?

[Drunkskunk]

It really depends on the motor design. If it has the same KV and the same torque specs per watt, then you'll get nothing much from it except the ability to push the motor harder before overheating it.

But it greatly depends on your controller and the C rate of your battery. If your 1500w motor is making out the capabilities of the controller, then you won't gain any thing with a bigger motor except space in your wallet. and if the C rate of your batteries is nearly maxxed with your current motor, then you'll melt them down trying to push more power out of them.
And if your 1500W motor is being under used now by your system, then you could be adding dead weight to your bike with the bigger motor, making it slower and eating more power to get it up a hill.

Bigger motor has to be balanced with controller and battery that can handle the power, or you get broken stuff and free smoke.

[hybride]

What changes will you be making to the controller and batteries to deliver the higher power to the motor?

Non. I locked the main current on 55A max. The standard motor is running lukewarm at full speed. It's rated as 1500 Watt.
I suppose it can handle more power without trouble.

[hybride]

It really depends on the motor design. If it has the same KV and the same torque specs per watt, then you'll get nothing much from it except the ability to push the motor harder before overheating it.

But it greatly depends on your controller and the C rate of your battery. If your 1500w motor is making out the capabilities of the controller, then you won't gain any thing with a bigger motor except space in your wallet. and if the C rate of your batteries is nearly maxxed with your current motor, then you'll melt them down trying to push more power out of them.
And if your 1500W motor is being under used now by your system, then you could be adding dead weight to your bike with the bigger motor, making it slower and eating more power to get it up a hill.

Bigger motor has to be balanced with controller and battery that can handle the power, or you get broken stuff and free smoke.

Great advise, thanks!

[amberwolf]

Non. I locked the main current on 55A max. The standard motor is running lukewarm at full speed.

Then a bigger motor won't buy you anything.

A *different* motor (different winding for higher or lower speed, etc) would change things, but an otherwise-identical motor simply designed for higher power handling won't be anythign but heavier and more expensive.