VFS Brushed Help

VFS-2000 Based Help Center & Settings

Understand that this ESC allows you to take your motor and ESC to its limits. Taking it to these limits will allow you to take it too far. The following is a good guide line to follow for stock and modified motors. KO PROPO does not take any responsibility for these settings. Proceed at your own risk!

Using the VFS-2000, you must use the super shotki diode that came with it. Almost every VFS-2000 that has blow was due to not using the super shotki diode(s).

What is the super shotki diode? This is basically a smaller version of the shotki diode but the power of TWO. Generally what damages the ESC is not the acceleration, but the braking. When you are braking, you create a short across the motor. This short will travel back to the ESC if the super shotki is not connected and will damage the ESC. For mod racing, we would recommend TWO super shotki diodes or up to FOUR for motors lower than 10T. If you do not have two super shotki diodes, you would need the equivalent of four shotki diodes.

The power up condensor that comes with your VFS prevents voltage drops due to quick acceleration. One is recommended for stock, TWO is recommended for modified motors.

Settings: Higher the number (frequency), more run time, efficiency, less punch. Lower the number (frequency), less run time, less efficiency, more punch and more wear on your motor. When setting your VFS look for these things; com wear, brush wear and run time. Discoloration in the com and brushes is a result of too low a setting in the drive frequyency, wrong timing, or wrong brush set up.

Stock motors:
Generally, start at about 14 on the THRT setting. This gives a good punch for stock motors. If you feel that you need more punch, move the frequency setting down. You can set where you would like to have this punch with the VFS. One of the neat things about this ESC. If you feel that you need this punch in the mid-range of the throttle, lower it at throttle postion 15 or 16. This will very with drivers. Try to get a feeling where you have your trigger on your transmitter while you drive. This will give you a good reference where to change the VFS throttle postion. When you are changing the frequency, try not to jump frequency numbers too much, meaning going from 10 to 13. This will give the feeling of a choppy on/off switch feel. The idea of this ESC was to be smooth and controllable. Go up/down gradually, 10-11-12-13, etc.

Modified motors:
The rule for modified motors is not to go below 2000Hz or a FREQ setting of 17. Doing so will give you more power, but you run the risk of overheating and damaging the ESC. Leaving the frequency at the stock setting of 17 will yeild more power but less runtime. At the ROAR electric nationals, we had a setting that started at 17 and ended at about 30-32 for sedans. This gives you plenty of power and gives you plenty of runtime. For 1/12 scale we kept the setting at 28 all the way across the throttle. In mod, paying attention to the brushes is the key. Discoloration will occur quickly if the frequency is set too low. Lower turn motors than 10T will also yeild more heat and quicker brush wear with a lower frequency. For motors below 10T, I would raise the lowest frequency to about 3000Hz or a throttle setting of 22.