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Questions tagged [motors]

Questions regarding motors. All types of motors, their gearboxes, how to drive an electrical motor etc.

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5 votes
2 answers

How can I calculate the power and torque required for the motor on a wheeled robot/vehicle?

How can I calculate the power and torque required for the motor on a wheeled robot or vehicle if a particular acceleration or movement up an incline is required?
DKNguyen's user avatar
  • 5,621
25 votes
1 answer

Understanding required torque for a motor lifting a weight

This is a continuation of me trying to understand torque and stepper motors in my other question. I'm trying to understand the torque a motor would be required to generate to lift a small weight, and ...
confused's user avatar
  • 559
20 votes
7 answers

Effective ways to drive a single shaft with multiple motors?

To head off the "why not use a bigger motor" question, I'm a high school mentor for an FTC (First Tech Challenge) robotics team, with a bit of a soft mechanical / hardware background. They're ...
trycatch's user avatar
  • 301
6 votes
5 answers

Ways to brake an axle

I am currently studying Mechanical Engineering and am doing an assignment where I have to design a wire rope tensioner where a wire rope is unspooled from a drum, but the wire has to be at a specific ...
David's user avatar
  • 61
0 votes
1 answer

What mechanism would you use to lift, then at a certain point release something with a pulley, string & motor

I'd like to lift an inflatable cow up to a pulley I threw over a high branch and then release it to fall when it gets to the top, and then repeat the process. I currently have a loop of string between ...
James White's user avatar
0 votes
1 answer

Are stator magnets in brushed DC motors radially magnetised?

In an electric motor like this one, are the stator magnets radially magnetised, as in, each of the two magnets has opposite poles on the inside and outside diameter?
StatQ's user avatar
  • 23
11 votes
1 answer

Avoid snapping an electric cable from too much rotation

I recently built the basic construction for a crane out of lightweight material. Basically the head of the crane contains an electric servo motor which spins the head of the crane by pushing itself ...
Mast's user avatar
  • 387
10 votes
1 answer

How to calculate Power of motor when used as a generator?

How can you calculate how much power can be generated by a motor when used as a generator (like a motor used in a wind turbine)? Does the power depend on how fast the magnet is rotated? If so, is ...
user510's user avatar
  • 313
4 votes
2 answers

How to connect a motor shaft to a plate

I'm trying to drive an aluminium plate using a motor via a 20mm-wide 2mm-thick stainless steel tube. The tube is driven by a 6mm motor shaft via a pulley and the torque will be around 5Nm at most. Is ...
John M.'s user avatar
  • 1,033
3 votes
3 answers

Why aren't pneumatic/hydraulic artificial muscle actuated humanoid robots more common?

I'm designing a humanoid robot using pneumatic artificial muscles. I chose these actuator units because they're much cheaper than electric motors of comparable power output capability. instead of ...
Jacob Valdez's user avatar
2 votes
0 answers

Advice on spring launcher project

I found an ingenious design of a spring ball launcher on grabcad and I'm interested in adapting it to accelerate a $43.7 \mathrm{~mm}$ diameter, $45 \mathrm{~g}$ golf ball enough to reach $65.5 \...
curioso's user avatar
  • 31
2 votes
1 answer

Oscillations in motor control systems

I have an underdamped control system for a DC motor. It is only a mathematical model so I can't visualise the motor. I can change the value of the "k" or compensator. I have noticed that changing ...
loogle1's user avatar
  • 170
2 votes
2 answers

Torque Problems vs Motor Problem?

I want to preface this by saying I am software engineer so each part of this robot build has been a lesson on its own. From welding, to CAD design, pillow block bearings, etc, etc.... I am working ...
Sam Hammamy's user avatar
1 vote
1 answer

Fast and quitet linear actuator for lifting less than a kilo

I'm looking for a linear actuator that can lift a microphone of about 700 grams. It's for a goose-neck microphone (together with shock-mount) that will pop out of a small pulpit. Only the top part is ...
Louis Somers's user avatar
0 votes
1 answer

Will the cart steer to the left/right by itself in this design?

I'm trying to retrofit a pull cart with electric motor. So, one wheel will have an electric hub motor and it is connected to a rotating shaft to the other non-powered wheel. The driveshaft is ...
ratib90486's user avatar
0 votes
1 answer

What signals are expected on the connectors for this 12V Volkswagen Scirroco wiper motor circuit

EDIT: added a picture of a very similar unit. I picked up a used VW rear? wiper motor that I want to use for a simple motion experiment. Having no idea how to power the thing I popped open the case ...
twobob's user avatar
  • 131
0 votes
2 answers

How to calculate the required torque in a static equilibrium system

I am working on a personal project where I need to select a motor to rotate a system that is in static equilibrium. The motor torque specification is given in This is what I have: Bar : 2 ...
Tino Fourie's user avatar
0 votes
1 answer

how to avoid a clash of magnetic charge and electric charge

now I'm working on a project which involves a dc motor and high voltage. I'm developing a machine consists of a motor to rotate a platform disc and high voltage will be applied during the rotation. ...
norul's user avatar
  • 5
-4 votes
1 answer

Force Required to Lift a WEIGHT of 1Kg [closed]

I want to lift a mass of 1kg so how much force is required ?
Antony Edison's user avatar