That is customer service above and beyond!!!! They could have just said sorry they are used, cant help you out. Made specifically for extreme environments, sub-zero winters, mud caked rockers AMP Research PowerStep Xtreme is designed to hold up to the extreme because of its dual motors. So bascially for $138 bucks I can get brand new motors and drive arms for both sides of the truck.
If you want to do both sides so you have new motors and drive arms on both sides you can do both sides. Once you get the new stuff, tag the old arm and send it back and we'll credit the $193. But what I'll do for you is authorize your credit card for the extra $193, send you the new arm, along with a return tag. You'll have to have the new drive arm too to use the new motor and its $193. Get special offers & fast delivery options with every purchase on. He told me: "Well we cant warranty them because you are the second owner but here is what I can do for you. Buy AMP Research 20-03289-94 Power Step Running Board Motor online at an affordable price. Not only has the motor changed but the whole entire arm has to be changed to use the new motor. Well started out bad cause he said they have changed motors and dont make the one I have any more. Told them I bought a pair of used Amp Steps and that the motor was broken in shipping. Its value is first decreased and then increased which in turn first increases and then decreases speed of the stepper motor.Ok I just got off the phone with Amp-Research. Here you can clearly see how speed of the motor varies with resistance R2. Thus value of potentiometer determines speed of the stepper motor. Thus when R2 or pot’s value is maximum, frequency is minimum due to which IC 4017 counts more slowly and gives more delayed output.Īs value of resistance R2 decreases, frequency increases which causes minimum delay between outputs of IC 4017. It is clear from the formula that frequency of clock pulses decreases as value of R2 increases. Formula for frequency of output clock pulse is : Let’s say initially position of pot is such that there is maximum resistance (220k) between discharge and threshold pin. Thus one complete revolution is obtained. Then same thing happens with Q2 which energizes coil 2 followed by coil 3 and coil 4. This energizes coil 1 and motor rotates at some angle which depends on clock frequency. When Q1 is on it acts like a closed switch and current flows through common wire to wire 1 and then to ground through transistor Q1. But when one transistor is on all other remain off. First, leave all four motor coils open and turn the motor shaft to get a feel for how hard it is to turn. Since transistor Q1 is connected to pin 3, it switches on first then transistor Q2 followed by Q3 and Q4. These clock pulses are given to IC CD 4017 which then counts the clock pulses one by one and give 1 as output to pin no 3,2,4,7 respectively and repeats this process continuously. With that, the motor has taken its first step. The change in direction of the magnetic field forces the rotor to align with the powered phase. If you change value of any of these three component frequency of clock pulse will change. To step the motor, current in one phase is turned off. 555 timer produces clock pulses depending on the values of resistor, potentiometer and capacitor. WORKING:Īfter making connections properly if you switch on the circuit motor will start rotating in steps. This ensures no interruption in the motor’s rotation. 10 is connected to pin15 so that after 4rth count IC resets and counting starts from the beginning again. As we require only first four pins for one complete revolution of motor or first four decimal counts from o to 3, pin no. FOR SALE AMP Research Step Nerf Bar Running Board Replacement MotorThis is. This causes certain delay in rotation of motor which is unnecessary. AMP RESEARCH STEP Nerf Bar Replacement Motor A10049-113 (80-03129-90) - 95.99.
Amp steps motor full#
Connect other wires of stepper motor in such a way so that coils are energized one by one to complete one full revolution properly.( you can look into datasheet of the motor provided by the manufacturer) WHY OUTPUT PIN 10 OF IC 4017 IS CONNECTED TO ITS PIN 15 (RESET PIN)?Īs already mentioned above 4017 counts clock pulses one by one up to 10th clock pulse and gives high output on output pins accordingly, each output pin goes high. Connect common wire of stepper motor to the positive of supply.Ħ. Connect 10 and 15th pin to ground through a 1k resistor.ĥ. Connect pins 3,2,4,7 one by one to transistors 1,2,3,4 respectively.Ĥ. Connect enable pin or 13th pin of 4017 to ground.ģ.
Connect pin 3 or output pin of 555 timer to pin 14 (clock pin ) of IC 4017.Ģ. Transistors enable high current to pass through them and then motor, thus excluding 555 timer completely as it can supply very little amount of current. Transistors act like switches here, thus energizing one coil at a time.Ģ.
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