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A lot of people seems  interesting to method of power up in electric car.
This week, I write more detail of same title.

Does maximum speed change by Capacitor? 

I received question that "Does torque characteristic or the rapid rotation area characteristic change by kind of capacitor?" on facebook comment.
 

I will answer to this question.

[1] Case of low current motor using with light load.

When using low current motor with light load , ESC can supply power to the motor.
So, the motor can up to maximum speed.  
 

[2]A case of Motor with heavy load.

If you change large current motor or  change to large pinion gear or use boost and turbo function, motor will need large current.

If motor's needs current is more than battery supply current, battery voltage will be down.
 

If need current of motor is over than supply current of battery, battery become to drop voltage.(Fig1)
 The revolution of the motor doesn't rise when supply voltage is down.(Fig2)
So you must feel less power and slow speed (Fig3)

One solved way is decrease  of  Motor's load. But you can not win in the race at this solution.
So we recommend the way of using capacitor as solution.

[3]The case of using capasitor.

However, the load of the motor can reduce momentary power down like the figure above as the big setting when using an appropriate capacitor. Battery can supply current to needs of the motor, so revolution of the motor is smooth, and maximum speed becomet to fast.

However, when the capacitor to use isn't appropriate, the effect doesn't appear.
Also, it is same in case of using in the extended period and capacitor's degrading, too.
If you feel such a things, please change your capacitor.

Current of the  motor will be changed by the kind of the motor(Brushless/Brushed) and in using method for motor(boost/nonBoost).
To choose a capacitor by the situation is important.

There are many specification cpacitor in the market.
We tested each products by the many situations. And we supply to our customer.

Please use these capacitor by your situation.

I explained "Required current of the motor", "Power of the battery", "using an appropriate capacitor" in this POST.
I will explain more information for using capacitor in next post.

Thank you for reading this POST!