48V 1000W BLDC motor

[nastypoker4]

I have a 48V BLDC motor on an e-bike with a controller that matches. 4x 6S 5Ah LiPo packs. 2S2P so 10Ah @ ~50V fully charged.

If I add more voltage, I will get more top speed but will the controller handle it?
The only way to get more torque is to up the current but for that I will definitely need to replace the controller, is that correct?

Cheers.

 

[Dauntless]

For lack of info, I'll have to be vague.

If you raise the voltage, you raise the rpm. If you raise the gear ratio, you get torque. Depending on what you're trying to do, you start your planning there.

Tell more about your motor and controller and there might be people who've worked with them. Or at have ideas about them. You're saying you have pair of 12s, I think you should consider that less than 50 volts.

 

[mark5]

The only way to get more torque is to up the current but for that I will definitely need to replace the controller, is that correct?

From the Endless Sphere wiki:

Modifying a shunt with controlled results by John in CR
http://endless-sphere.com/forums/viewtopic.php?f=2&t=31643#p493890
http://endless-sphere.com/forums/viewtopic.php?f=2&t=31643

 

[wesnewell]

All 48V controllers will have 63V caps minimum, so that's the max voltage rating for them. The fets will be 68-75V rated, so no problem there. The only problem going above 12s, which you have now, is the LVC doesn't change, which is usually 42V on a 48V controller. That's the perfect LVC for a 12s pack at 3.5V per cell and OK for a 13s pack, but any higher than 13s you will need to monitor voltage and not run the pack voltage down too low. Or change the LVC if you know how.