Questions tagged [motors]

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

Filter by
Sorted by
Tagged with
0 votes
1 answer
14 views

High RPM CVT for Spindle Motor

I have been messing about with a 20k RPM spindle motor and want to try to have some more low end torque. I was thinking about using a belt or chain CVT so I can smoothly change gear ratios but is ...
Phaselancer's user avatar
1 vote
1 answer
54 views

Method to achieve a constant force no matter the actual velocity when under load

So, this might be a somewhat strange need, as I don't seem to see many resources on this. I'm trying to create a device where I can set an amount of force for it to generate, and when it would behave ...
Jason Long's user avatar
0 votes
0 answers
22 views

How does wheel size directly driven by the motor affect the torque/speed/rpm applied to contact surface

I'm designing a compact tennis robot (ball launcher). I built a very decent prototype that is drastically lighter and smaller than what most others have built, is it's built using two brushless direct ...
Sterling Duchess's user avatar
0 votes
1 answer
14 views

How do I find the optimal/best Gear ratios for an 3-speed transmission of an RC car?

[was told to post here, from physics stackexchange] Says it in the title - I've done a bunch of stuff so far, but my work seems to be wrong. I'm trying to build an RC car (pretty small, about 25 cm in ...
bepispasta42069's user avatar
0 votes
0 answers
29 views

Help identify this belt please?

Can you help me identify this belt? It is 2mm wide and has a length of 133mm. It is a drive belt in a tape player from the 70s. It is exceptionally thin almost like a plastic film. It does not feel ...
alistairboyer's user avatar
0 votes
2 answers
49 views

Flywheel power vs. Gross power in bulldozers

In product specifications of bulldozers, the manufacturers give several figures for the engine power, such as flywheel power, net power - Net SAE J1349/ISO 9249, ISO 14396 power, and Gross SAE J1995 ...
Triceratops's user avatar
0 votes
0 answers
25 views

How to manufacture Inrunner BLDC motor core

I need to make a 10 slot BLDC inrunner motor core that is 40mm wide has 10mm inner diameter and 10mm thick. How would I make this? I would want to make it out of mild steel but I do not have a CNC ...
Yassin's user avatar
  • 1
0 votes
1 answer
47 views

What are the protrusions on the side of some electric motors?

The question is straight forward. What are the protrusions attached to the main cylinder of this electric motor? This one has two protrusions that are the same size. Others, like the motor for my ...
Rekov's user avatar
  • 187
0 votes
0 answers
20 views

Bi-directional rotary to linear locking mechanism

I'd like help coming up with a simple brushed DC motor-powered mechanism that achieves the following. Rotating the motor clockwise causes a linear mechanism (a pin) to arrive at position A Further ...
user42570's user avatar
1 vote
0 answers
36 views

Examples of uses of different voltages as seen on motor nameplate

The electric motor nameplate (pictured) has a variety of different voltage configurations which are listed. I understand that the motor can be configured to run on different voltages by changing the ...
hamslice's user avatar
0 votes
0 answers
19 views

I want to simulate Motor output WRT throttle

I don't have any idea on how to get started. Can you mention required relations and concepts to get started.
Yetukuri Revanth's user avatar
0 votes
1 answer
32 views

Calculate constant power applied to displace a mass a given distance within a given time

I'm trying to determine electric motor power sizing with requirements given for covering a particular distance within a certain time. The knowns are the vehicle mass, the allotted time, the target ...
KevinGrumble's user avatar
0 votes
0 answers
24 views

How are the motors coupled to pulleys in this scara robot?

Several years ago the CoRETS group posted a animated video about a novel SCARA robot https://youtu.be/P3iIIqFkSIc but there are no references to it in the literature. I cannot understand how the two ...
user391339's user avatar
1 vote
1 answer
26 views

Remove slack from geared stepper - without touching the gearbox?

I have a Nema 11 stepper motor with a planetary gearbox and think it is a great stepper motor for a project I'm trying to do. One thing I noticed is that the output shaft of the gearbox has some ...
ulix's user avatar
  • 11
0 votes
1 answer
28 views

Slip ring mounts

I am trying to research slip rings and their mounting options in order to design a BOM for a project that requires it. Since I am still in the early design stage, I haven't chosen a type of motor, but ...
lurscher's user avatar
  • 109
0 votes
0 answers
28 views

Mechanism to even out force from linear motion

Not sure exactly how to explain this, but I am looking to use a threaded rod connected to a motor, to push and pull open a gate valve. My idea for this is to attach a nut to the handle of the pull/...
drew wood's user avatar
0 votes
1 answer
64 views

Is there a special wrench used to remove this servo tachometer?

I tried using a pulley puller with moderate force to remove the tachometer but it didn’t seem so budge (although I didn’t use heat to soften potential adhesive inside). Looking at the shaft I can see ...
user391339's user avatar
0 votes
0 answers
27 views

High torque timing belt

I'm building an automatic litter box for my kitty and I tried building two versions using a GT2 timing belt + pulley but the belt seems to slip from the pulley often (since it requires high torque) ...
rkrishnan2012's user avatar
1 vote
1 answer
43 views

How do I wire up this Single Phase AC Motor? (Wye Arrangement)

The no-volt-release switch stopped latching on my single-phase planer thicknesser. The motor is under 1.1kw (1.5hp) and I understood that I would be able to drop in a generic switch. However now ...
James's user avatar
  • 11
0 votes
0 answers
19 views

Effect of pump suction lift on pump vibrations and motor current

Consider the case of an electric motor driving a centrifugal pump. The pump is installed above the tank. In Case-I, the tank is completely filled with water. In Case-II, the tank is emptied and thus ...
NN_Developer's user avatar
0 votes
2 answers
38 views

How does the magnetic field in a synchronous machine with two pole-pairs distribute if I only apply DC-voltage on two phases? (Star connection)

I am struggeling to understand the following: If I consider a synchronous motor with only one polepair and apply dc-voltage to two of the three phases this results in a static magnetic field. The ...
cor3kl's user avatar
  • 1
0 votes
1 answer
31 views

Using a Lead Screw To Create a Two Stage Clamping System

I want to use a motor to drive a lead screw that first brings down a platform that locks into place and then controls a secondary platform to apply pressure but using only a single motor. As an ...
Chris James's user avatar
0 votes
0 answers
20 views

How to design a fast moving tilt table capable of lifting and holding 35kg/75lb?

I have a rectangular table about 0.5m(20") x 1m(40"). I need to lift one end of it, similar to a tilting table using something like a linear actuator (think CNC Z-axis). The load is fairly ...
Jeremy Herrman's user avatar
0 votes
0 answers
38 views

How to identify electric motors, find pinouts, etc

This is my first question here so I apologize if I do anything wrong in making this post. I recently pulled the electric motors out of two junked home appliances (a 120v clothes washing machine and a ...
Colgate2004's user avatar
2 votes
2 answers
142 views

Is it legal to have a motor wound with aluminum wire that has the appearance of copper?

Today, I melted some metals for the first time, including some aluminum cans and aluminum parts from my drying machine. I was thrilled to create ingots from them. However, when I tried to make a ...
Christophe Gudlake's user avatar
0 votes
0 answers
30 views

Is this a feasible way to straight-couple to a gear?

I have some car window motors that I would like to directly couple to some roller-type shades in my house. I would like to introduce a direct coupling mechanism rather than use some sort of chain. In ...
user391339's user avatar
0 votes
1 answer
39 views

Stepper motor response under varying load

I had a thought that came to mind that made me curious-- Though unfortunately I am not an ME. I was wondering if someone could assist me in working through my thinking, but you will have to be gentle ...
Nevermnd's user avatar
0 votes
2 answers
100 views

Do any continuously-variable-speed electric motors use Alternating Current?

All the "energy-efficient" continuously-variable-speed electric motors I've seen in consumer applications (e.g., HVAC, water pumps – all motors producing on the order of one horsepower) ...
feetwet's user avatar
  • 1,747
0 votes
2 answers
57 views

Best method to mount electric motor for chain drive for industrial machinery

I want to use this electric motor to run an industrial machine via ANSI roller chain. In the images most of the machine is not visible, only the sprocket on the input shaft and a bit of the relevant ...
sebastian323's user avatar
0 votes
2 answers
44 views

How to mount hub motor with strange shaft profile

I'm thinking about buying a hub motor that seems to be relatively common in the alibaba/ebay world but has a pretty strange shaft coming out of it (see pictures). It has a D profile that doesn't go ...
Ben's user avatar
  • 3
1 vote
1 answer
27 views

Physics behind a realistic and theoretical DC motor

I am learning about theoretical DC motors where the rotational motion is produced due to torque on either side of a coil. However, after researching real DC motors it seems to me that the winding ...
Cirrus's user avatar
  • 13
0 votes
1 answer
38 views

Pumping machine (Centrifugal ) fails to pump

I have a centrifugal pumping machine that fails to pump up consistently. When powdered on, it spills up water, then stops and continues intermittently like that without a consistent flow of water out. ...
Apata John's user avatar
0 votes
1 answer
32 views

Will providing below rated torque to a DC machine acting as a generator still allow it to rotate?

I'm working on a system that will generate electrical power from a mechanical input. If the mechanical input is unable to generate the required torque to meet the rated torque of the DC machine, will ...
Jacob F's user avatar
0 votes
1 answer
64 views

Flopping toy mechanism design

I've bought a flopping toy for my kid. The toy looks like: Unfortunately, the toy mechanism inside jams when grabbed and the battery lasts for a short time: I tried to do my own mechanism, printing ...
Kuba's user avatar
  • 1
0 votes
0 answers
54 views

What motors would work best for a 360 degree rotational platform?

I'm trying to build a 6 DOF 360 degree platform and I need 3 powerful motors to rotate 3 arms that hold the center platform. The Pitch arm is the first arm, which will be doing most of the heavy ...
Raza Zaidi's user avatar
0 votes
1 answer
76 views

Tips on searching for components?

I'm a mechatronics engineer, and a big part of my job is searching for the right off-the-shelf (mostly mechanical) component for a specific purpose. It can be anything from vacuum pumps, flow meters, ...
Achintya Agarwal's user avatar
0 votes
0 answers
53 views

How to calculate the output torque on a split ring gear?

I have a nema 17 motor and I'm trying to lift 5 pounds of weight at a distance of 16 inches. Correct me if I'm wrong, but it comes out to roughly 9 newton meters of torque required. On my digital ...
John's user avatar
  • 101
0 votes
0 answers
23 views

How can I improve this radial impeller (radial cooling fins) design?

I recently rewound a 1/4 hp single-phase induction motor used in a top-load washing machine (picture), but there's an issue: It heats like hell, from its own original design, and I rewound it exactly ...
user2934303's user avatar
0 votes
1 answer
49 views

How should one wind the coils for a BLDC motor to maximize torque, if nothing else matters?

I'm trying to build a brushless DC motor with six winding arms, pretty typical design. If I'm trying to maximize the torque output of my motor, what would improve the motor best: Extending the length ...
flatypus's user avatar
0 votes
1 answer
56 views

What should be the clearance hole size for mounting a hub on a motor shaft?

I have a motor with an 8mm shaft diameter. I'm trying to make my own hub for direct mount driving a wheel. What diameter hole size should I drill for the hub's shaft which couples with the motor shaft?...
tinker102's user avatar
0 votes
1 answer
154 views

Motor capable of 10Nm can barely lift 15lb

I have a 5.5 kW motor that I'm using for testing. I tried using it to lift a 15lb weight but it struggled. I reduced the amount of rope on the spool (there was a lot and then it was able to lift it at ...
zapshe's user avatar
  • 113
-1 votes
1 answer
42 views

How powerful is this motor?

I am a beginner in Electronics and motors, and I want to build a DIY device that is like this https://www.youtube.com/watch?v=-nXsYVWqXEQ&ab_channel=Litter-Robot I am just wondering how powerful ...
omega's user avatar
  • 99
0 votes
0 answers
26 views

Welding rear freehub on ebike

I am making a homemade mid drive ebike. This bike will have the motor driving the front cassette which is modified with a freewheel so the pedals are stationary. However, since the freewheel is one ...
MechEboss's user avatar
0 votes
1 answer
43 views

how to plot power output graph for motors

What is the best way to plot motor power output graphs? Does anyone know how we can plot this graph for motors and engines?
Vinoth Kumar's user avatar
0 votes
0 answers
18 views

how to do this, connecting gaser engine and electric motor to a common shaft with clutch?

how to do this, connecting the engine and motor to a common shaft with the clutch? to make a hybrid engine for UAVs.
Vinoth Kumar's user avatar
0 votes
0 answers
38 views

Wired my 220V compressor duty motor wrong, did I fry it?

Installing a new 220V single phase motor on my air compressor. Carelessly hooked up ground wire to line 1, line 2 to line 2, and line one to the the other group of wires.... there were 3 terminals. ...
Dumdum's user avatar
  • 1
0 votes
0 answers
26 views

Torque calculation for a robot [duplicate]

if I have a robot 50kg, 6 wheels and i want to move it inside a sewer pipe what is the torque required? and there is any DC motor model can satisfy this function?
Ibrahim Ahmed's user avatar
0 votes
0 answers
18 views

Which tool to measure shaft alignment for small diameter shafts (d=10mm)?

I have seen many tools and methods to check shaft alignment, but they are mostly used for big shaft. I wonder if there are small tools for small diameter shaft with limited space to install? Can you ...
Random engineer's user avatar
0 votes
0 answers
14 views

Which ANSYS modules do we need if we want to do the coupled simulation of motor?

There are more than electromagnetic field in real motor running, for example, the electromagnetic field will couple with temperature field and the fluid field of cooling fluid will affect the ...
fhrl's user avatar
  • 1
0 votes
0 answers
29 views

How to affix a 3/4" keyed bore wheel/pulley to 5/8" D-profile shaft?

How do I affix a 1.5-inch-thick wheel with a 0.75-inch keyed bore (or pulley) to my motor's 1.25-inch-long x 5/8" diameter D-profile shaft (both pictured)"?
JJ Zabkar's user avatar
  • 101

1
2 3 4 5
11