Questions tagged [motors]
Questions regarding motors. All types of motors, their gearboxes, how to drive an electrical motor etc.
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Help with scaling torque and forces?
I am currently designing a ground based digging drill, that hopefully will be accepted by a commercial entity. I am currently working on the preliminary design of the robot and am hoping to move to ...
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Determining the torque needed for a servo motor
I'm looking for a bit of clarity on a design I have in mind. Please bear with me as I have no background in physics, engineering and this is part of my first real DIY project, so the knowledge base ...
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What do I need to operate this motor?
I am currently designing a tennis ball launcher. I am looking to use the friction wheel approach, where you have the ball passing through 2 spinning wheels and being launched by the frictional force. ...
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Motor part winding start
I have a BITZER compressor type 4GE-23Y-40P, with a part winding start option
Nennspannung = nominal voltage = 380-420
Frequ = frequency = 50
Betr. strom = maximal operating current = 43.9
...
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Why are the synchronous reluctance motors not self-starting?
I have been studying synchronous reluctance motor since a month. I am curious to know why is this motor not self starting?
If used with an inverter, this motor can be made self-starting. Or by adding ...
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Motors for an omnidirectional RC toycar (with mecanum wheels)
First of all, apologies if this is an Arduino question. IMHO, I felt that the questions is more about motors and their comparison.
I'm trying to build an RC toycar using mecanum wheels.
The vehicle ...
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How much torque is needed to mix melted marshmallow with rice krispie?
I am designing a robot to make rice krispie treats!
More specifically, I want to use a fork to mix the melted marshmallow with rice krispie. I am currently specing out the motor, and since marshmallow+...
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Energy Wasted in Electromagnetic Motor Actuator Vs Human Muscle Actuation
I would like to know if the energy utilized by a robotic arm is greater compared to the energy utilized by human arm. Robotic arm is essentially servo motors that use electromagnetic field to create ...
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Utilizing solenoids in electric motors
I have seen videos of solenoid engines but there were claims that they were inefficient unlike DC motors. I was wondering what would be the most efficient use of a solenoid in an electric motor. ...
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Lifting a cabinet using actuators or scissor lift
Disclaimer: I am not an engineer - just a DIY guy looking for some advice or help please, so please forgive me if I use incorrect terminology :)
I am building a cabinet that has a hidden inner cabinet ...
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Gear mechanism for automatic gate
I have a sliding gate installed on my compound wall. I want to control the gate opening/closing with a motor. I have the electronic circuitry to control motor start/stop. I m thinking about attaching ...
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Is there any side effect to soft start an AC motor?
I have a ground to water heat pump for my home heating/cooling (scroll compressor). The 3-phase 15kW-peak motor can be soft started but this option is off by default.
I'm aware of all the positive ...
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Replicate stepper motor with gasoline engine
For those unaware of what a DC stepper motor is, it boils down to an electronic motor where the rotation can be precisely controlled, i.e. you can control the rotation of the motor in fractions of a ...
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Starter direction for methanol engine
I am having a small 2.5cc methanol 2-stroke engine that I am building an electric starter mechanism for. From my research I was under the impression that for a 2-stroke engine like the one that I have ...
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Electric go kart
I know this may be a physics question but, will a 48 V 1000 W motor with 3000 rpm be able to move a 500 lb go kart on a concrete sidewalk? And, can I use one 12 V 101 Ah 27 A deep cycle marine battery ...
user257813
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Torque required to rotate object around axis using Stepper Motor for Kinetic Machine
Hey all,
I'm creating a machine to rotate a socket wrench using an arm attached to a motor shaft in order to make clicking sounds from the object therefore I'm trying to choose an appropriate stepper ...
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Building an ultralight electric hoist, what gearbox reduction / motor combination for torque / power requirements?
I am building an electric hoist.
Design requirements:
Lightweight
Quiet
Relatively low lifting requirements (100 kg)
Relatively fast lifting speed (80 fpm -> .4 m/s)
Low cost
Simple
Force ...
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Engage and disengage DC motor from free-spinning reel
So i want to have a reel (~4cm diameter) that will pull a ~80cm string with a torque of ~8kg-cm (edit: thanks for the clarification). To pull I want to use a gear motor. E.g. 12V DC motor like this:
...
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Torque Required for a stepper motor to rotate a socket wrench ratchet around an axis point
I'm trying to build a kinetic machine that rotates socket ratchet tools (e.g. https://en.wikipedia.org/wiki/Socket_wrench) to make a bunch of ratchet 'clicking' sounds for an art project. I'm trying ...
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DIY device to repeatedly depress and release gas pedal on a vehicle
The pedal needs to be depressed about 1/2 to 1 inch, once every three minutes. I believe the best way to do this will be with a rotating arm of length 2 to 2 1/2 inches that has rollers on each end, ...
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Is having one large motor more efficient than having two motors half the size?
I wanted to use multiple smaller motors to have the same strength as a large motor but spread out across a wider area. Is that as good as one large motor or is there some efficiency or power loss in ...
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How are planetary gearboxes held together?
I see that the housings of most planetary gearboxes consist of 3 parts: a front cap, a ring gear and a rear cap. Here's a common design:
In designs similar to this, the rear cap and the ring gear are ...
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What is the purpose of the steel plate in this coupler?
I've found a shaft coupler that has a steel plate in between, but it's not clear what its function is:
If it is to add strength to the coupler, isn't the coupler as strong as the weakest link, i.e. ...
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Secure loads to gearbox shafts
I have a sculpture that is designed to rotate over 3 axes at max. 30RPM and is mounted on an aluminium disc. My plan is to use 3 of these geared steppers and secure the sculpture to the Z-axis shaft, ...
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What is the fastest possible slot car
What is the fastest possible slot car one can build? What are the limiting factors?
Obviously, we have to require that the motor is aboard the car and that it's propelled by the wheels (we don't want ...
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Is having a keyway in aluminium for 30Nm a bad idea?
I'm designing an aluminium shaft hub for a 16mm keyed shaft with a maximum torque of 30Nm. However, stress analysis tells me that the keyway can suffer too much stress:
If my understanding is correct,...
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Could you use anything as a fuel source for an engine or motor, if it's designed to use that specific type of fuel?
By anything I don't mean to put some random liquid in a car engine, but is it possible to design and build an engine or motor that could use something like tea or orange juice for it's fuel? I know it ...
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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 ...
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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 ...
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How to connect Arduino to brushless motor through only 1 digital pin
I know how to connect motor to Arduino with 3 wires: 5v, digital pin and ground. As I know only digital wire need to control "speed control" of my motor. So, if my Arduino connected to computer and it ...
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Does AC consume more electricity if it is showing less current?
A air conditioner has label 9 amp of current and 2000 Watt.
But in actual reading it is showing 7 amp.(may be due to any fault, i.e. low Gas in compressor)
Does it consume more electricity or less ...
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What are the characteristics of a motor that will generate current and is powered by a 30 cc, 2-stroke small engine?
Problem: I am trying to hobby-build a generator using a (old, working, throw-away gas, yard blower) 30 cc, 2-stroke engine. The 2-stroke engine will spin a motor and I want the motor to generate DC ...
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Why would a specfication for a motor require that overtemperature protection be realized by modeling heat generation and not with an embedded sensor?
I'm reading the procurement documents for the R211 railcar contract, which is for electric multiple unit subway cars designed for rapid transit applications in New York City. The railcar's propulsion ...
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Calculating force transferred from pinion gear to rack
I am really challenged as I need to fit a bunch of motors in a 6" box acting as linear actuators. I was looking for linear actuators (most I found were brushed DC) at first but the ones I found that ...
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Basic intuition for motor torque
when shopping on digi-key or other electronics distributor, I can see the Torque - Holding spec, given in oz-in and mNm.
I understand Nm in a torque context when the force is applied as a lever at a ...
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What kinds of electric motors can produce a lot of power at low RPM?
Are there electric motors that can produce a lot of power at low RPM? Why couldn't a motor produce as much power as needed if you give it enough voltage? Why would an electric motor be able to produce ...
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BLDC Motor underwater ; weird behaviour
I recently was riding my e-bike (with a bldc hub motor) and decided to cool the motor (it -the stator- was approx 100-150 celcius I think) in the river.
The controller is on the top of the bike and ...
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Using Integral gain for motor positioning
I'm struggling to see how Integral gain is used for motor positioning.
Suppose we have an AC motor (with a 2048PPR encoder on the shaft) connected to a winch which drives an object forwards and ...
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What's a simple machine to lift and drop a 100 lbs weight repeatedly using an electric motor?
Essentially I have a 100 lbs. pile driver with an eyelet for lifting it on top. (It's on rails) I want to set up and automated machine to lift and drop the driver at a variable pace. Preferably I ...
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Modeling the torque of a real motor
I am trying to control a real inverted pendulum by means of a DC motor, for this I must model the torque of the motor, the work I've done in this direction is the following (which I believe is right):
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Running a well pump rated for 230V on 208V power
I have a well with a 1.5 HP pump. The pump is rated for 240V input. At the moment, the only nearby available power is 4-wire 208Y 3phase. I am considering connecting two of the three phases to the ...
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how to determine how much speed a motor will produce under load?
I am working on a one-wheel project, I would like to use an electric go kart motor chain driven to a 30 cm diameter wheel and get 90 kg at least 13 m/s with an acceleration of 3 m/s2, I ...
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Given a BLDC motor with one shaft, where should I attach my encoder?
I have recently purchased an ODrive servo controller made for hobby BLDC motors. Since I had a BLDC motor at home, I did not purchase a dual shaft motor when I got the ODrive.
My question is if I ...
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Determine if car is moving forward or backward
I would like to know if there is someway i can figure out if the car wheel is rotating in clockwise or anticlock wise direction.
Im working on a project which determines if car rolled back on a hill ...
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Motor with Water Pump Through Shaft?
I am attempting to drive a device with a motor, but also require water input.
Is there such a device that serves as both a drive motor with a water pump through the motor's shaft?
In essence, it ...
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Wobbling DC motor head
I have used 250 watt DC motor, for DIY electric potters wheel. Motor rated with RPM 3300 and geared reduction to 330 RPM. The issue I am facing is wobbling of the motor head. This issue is with the ...
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What motor torque specs that is suited for a horizontal to vertical 90 degree lift?
I have this simple design to lift an access door, but I am looking for the motor specs to do this heavy duty job. This is a simple design, I have added some information of the time, length of the part ...
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Design Input: Rotary motion to Linear motion, What system should I choose?
I am posting this here because of the multidisciplinary knowledge needed to tackle this issue.
Problem: I have to make an electromechanical device that is required to have controllable (downward) ...
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Axis connection types
Complete hobbyist here. I have two questions I have a problem figuring out.
I have hard time finding information about axis and types of connections they have. For example take this worm gear reducer: ...
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how do you calculate viscocity from torque arm load cell measurements?
I have a piece of company developed equipment that uses a pot mounted on a rotating base plate with a 0.15m torque arm and load cell, a mixing paddle is used to stir the mixture while the controller ...
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