Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [gear]

33 questions
3
votes
2 answers

What DC motor specs do I need to lift a weight with certain gear configuration

I'm trying to determine how much torque, power, voltage, and size I need for my motor in order to lift between 50-100lbs given the gear configuration below. Assume that the motor and gears are securely held in place. Also, the speed at which the…
user3625087
  • 131
  • 1
  • 1
  • 2
3
votes
2 answers

Get current gear from rpm and speed through OBD2

I would like to modify my car with the help of Arduino to display the current gear. I wasn't quite sure where should I post this question as it is a car topic, as well as an electric engineering and mathematics topic. I want to get the engine rpm…
randddom games
  • 31
  • 1
  • 1
  • 2
2
votes
1 answer

Gearmotor : Principles and usefulness compared to a regular motor

I'm a student in an engineering school and I have a question for professionnals : What is exactly the usefulness of a geared motor that uses a gear to reduce the rotation speed compared to a regular motor which can, I assume, already modify its own…
Badboy
  • 21
  • 1
1
vote
0 answers

How do I find the best DC motor for my rack and pinion system?

I need enough electric power to produce about 0.289 Nm with a rack and pinion system and compress 24 mm of a 110 mm x 21.6 mm, 0.99 N/mm steel spring. What I have so far is that for a 10mm pitch diameter gear with ten 1mm gear modules and an angular…
curioso
  • 67
  • 5
1
vote
0 answers

What is this component? It locks magnet when powered

these 2 discs are part of a vehicle gear level control. Operation is, you push button on the gear level and then you can change vehicle gear position (eg 1, 2, neutral, reverse etc) Photo show side views of this mechanism. When button is not pushed,…
Ariel Narboada
  • 413
  • 2
  • 6
1
vote
0 answers

Choosing a stepper for antenna tracking system

I am building a prototype for an antenna tracking system. The following animation will make it slightly easier to understand what I have in mind: https://youtu.be/DZ0LRf6_Zew The two antennas are: https://www.wimo.com/xquad-antennas_e.html 2.3kg…
Alessio Sangalli
  • 125
  • 1
  • 10
1
vote
2 answers

Small motor (P<10W) with high torque

I need to find a small motor (max 10W) with a high torque(max 1Nm) and low rpm(max 60rpm). This question has been asked several time but I still have some doubts. I understand that the best option is to use a gearbox. The reason why find this…
Ugo Mela
  • 33
  • 4
1
vote
1 answer

Problems calculating torque for a motor opening a door

I want to make a device that can open a door from a cabinet. The door is about 4 meters wide and about 0.5 meters high. (if the width causes a problem I can split it in 1 meters section with one motor each, or keep it as one section with 1 motor on…
Michel Keijzers
  • 13,867
  • 18
  • 69
  • 139
1
vote
1 answer

Control of motor engagement with shaft

I am using servo and stepper motors for the first time, and have been searching for a solution to this basic problem: I want to drive a shaft with a motor, whereby this shaft also has a ‘neutral’ state that can be switched on/off with a…
George Ellis
  • 11
  • 3
1
vote
1 answer

Wind turbine design question

I am planning to design a wind turbine that is has rotor blade radius of 0.915m and is connected to a generator. The generators specifications are, it is an ac generator with 5000 coil turnings and a 0.050 tesla magnet with area being \$1 m^2\$. The…
user510
  • 145
  • 1
  • 1
  • 9
1
vote
3 answers

Generating electricity by moving door handle to produce 3 Watts?

I want to attach a generator to a door handle and have the output charge a battery. My system needs to provide about 3 Watts. A similar question was asked here and I referenced it to get an idea of what kind of force, torque, power, and energy are…
Jucesanc
  • 183
  • 6
  • 21
1
vote
2 answers

How can I increase the torque, but not the speed of this DC motor to gear with a potentiometer setup?

Short video of the machine running. It's made of three AAA batteries in series giving a total of 4.5V to the DC motor, these are connected through a potentiometer to control the speed. The DC motor is connected to a gear that runs a music box…
bogen
  • 1,093
  • 3
  • 14
  • 27
0
votes
1 answer

Is there a large difference between full-step and half-step stepper motors' torque at very low speeds?

I'm using a NEMA 23 for a solar tracker, which means my mechanism will move a single step every 5~10 minutes, and the step angle is 1.8 degrees which I need to bring down to 0.01 degrees. Now I need to ensure that there is enough torque to move the…
Ahmed Sherif
  • 1
0
votes
0 answers

Servo motor control maximum angle modification

I'm trying to figure out if it is possible to modify a JX Servo PDI-6208MG 8KG Servo 120 Degree 0.07 sec, which matches the required speed, size, and torque, but make it rotate over 270°. I'm using an Arduino Uno with a PWM library, and have to set…
emss
  • 1
  • 1
0
votes
1 answer

Why does this DC motor increase in current and then decrease as the speed increases?

Well, the general answer to this is that as the motor needs to overcome the inertia from its state of rest, it requires high starting torque and aka high current is consumed to do that work. On the other hand, Speed is also inversely proportional to…
venkatesh nayak
  • 11
1
2 3