ajusting amps on an esc - RCCanada - Canada Radio Controlled Hobby Forum
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Old 11-14-2006, 08:45 PM   #1
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ajusting amps on an esc

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i have an lrp quantam pro and a reedy 19t quad magnet and i just wanted to know my car is going really slow i was told i could ajust this by turning a knob on my esc but how far do i usually turn it?
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Old 11-14-2006, 08:56 PM   #2
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Maximum Power
Rotate control pot to right-hand stop (plus). At the maximum APC setting the unit’s overload protection may be triggered, depending on the motor in use, and in this case your speed control will switch off prematurely. If this should happen, turn the control pot to the left by about 1/3 turn.

Slippery Surfaces
If your car spins, turn the control pot to the left (minus) until you have full control of your car when accelerating.

Maximum APC Setting
If you select this setting to cope with an extremely slippery surface, remember to turn the control pot back to the right-hand stop at the end of the session, so that you can start with maximum power on the next track.
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Old 11-14-2006, 09:38 PM   #3
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The amps helps you accelerate and the volts helps you go fast.

By adjusting the knob, you will 'control' the amps going to the motor, you lower the amps limit, you will have less brutal acceleration, hence the explanation for the slippery surface. If you have high traction (carpet for example) you can crank it up to the max. If should not affect your top speed.

As per you speed problem, I would suggest to check your gearing (start with a 6:1 ratio for rubber or a rollout of 30mm if you're running foam). You can also reset your ESC to ensure you're using 100% of the throttle or make sure your end travel setting on your remove are set to 100% on your remote. Last thing to check would be your batteries, are hey still at 7.2 volts or less...

Good luck !

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Old 11-14-2006, 09:47 PM   #4
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If your car is running really slow you need to look at some other areas.
The APC setting does not effect full power, only how quickly it lets the motor get there when you apply full throttle.
It acts as a traction control of sorts.

If the car is running slowly check:

Batteries....are they new or old and tired
Is the motor new or used? Are the brushes and Comm in good shape?
Did the battery false peak while charging and are not fully charged.
Is the throttle setting on the ESC set properly with the throw of the transmitter throttle trigger.
Does that esc have a program setting that limits the current draw, thus restricting top speed?

Best thing to do is
Start back at the beginning....
Check all solder connections for a loose wire
Charge your battery pack.
Reset your ESC back to its default settings as per the instructions.
Reprogram following the instructions and see where you end up.
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Old 11-19-2006, 05:25 PM   #5
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Try this Out I got it from a WEB...

The Quantum has a push-button setup procedure with an LED "confirmation" system to store the neutral, full throttle and maximum brake commands from your transmitter. After holding the setup button for 3 seconds to get into the setup mode, you hold the trigger at each position (neutral, full throttle and maximum brake) and press the setup button to confirm each setting.

Holding the mode button down for 3 seconds accesses the programming modes, the first of which is "Punch Control." This mode allows you to adjust the ESC's drive frequency to one of five values: "1" represents the highest frequency setting and "5" represents the lowest.

Pressing the mode button a second time takes you to the "Initial Brake" mode, which allows you to adjust the amount of initial braking power in six values. Value zero provides the most linear braking, and value 5 provides the most progressive braking.

Pressing the mode button a third time takes you to the third and final mode-- "Automatic Brake." Automatic Brake is LRP's version of a drag brake. You can adjust how much braking you will have when the throttle trigger is returned to neutral. A value of zero turns Automatic Brake off, and the drag braking increases when values 1 through 5 are selected.
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