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

I laid everything out so you should only need to read it from top to bottom and look backwards for variables, never forward. I also tried to lay it out so hopefully you know where everything is coming ...
DKNguyen's user avatar
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10 votes

Calculation of Clamping force from bolt torque

That figure is about right for a low tensile bolt. See also this calculator and this table As a reality check if we approximate to a cross sectional area of 7 mm2 and a load of 1000 N that gives a ...
Chris Johns's user avatar
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8 votes
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Does a gear retain its mechanical advantage in a 1 2 1 ratio?

if you have them in line like the following picture then NO. The first and the last gear will have the same speed and the same torque (actually slightly less due to losses). if you wanted to retain a ...
NMech's user avatar
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7 votes
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Does a parked car provide more engine resistance when left in a low gear or high gear?

given that in a high gear each revolution of the wheel causes a greater number of revolutions in the engine than a lower gear would? It is exactly the other way around: In a low gear, the engine ...
Chris_abc's user avatar
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6 votes
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What is the relationship between drive shaft diameter and torque output?

No. Your basic problem is that "torque is proportional to radius" is wrong. Torque is the expression of normalized rotational force independent of radius. For example if a motor can deliver 10 Nm ...
Olin Lathrop's user avatar
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6 votes
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What is 'No Detent Torque'?

Detent torque is the torque while coils are not energised. Permanent magnets and the iron stator hold the motor in a given position without any power needing to be applied, although this force is ...
Jodes's user avatar
  • 1,304
6 votes

Three-phase versus single-phase operation of a generator

But I'm thinking it may be better (more efficient maybe? less vibration maybe?) to run it in three-phase mode, with the load balanced among the three hot terminals. Correct. Figure 1. The load is ...
Transistor's user avatar
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6 votes

Ways to brake an axle

In the wire & cable business, the device you describe is called a dancer, for the way its components move about while regulating the tension in a rope or wire being unspooled from a large coil. ...
niels nielsen's user avatar
6 votes
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Good estimates for torque generated while turning a dial

This a table of a search done on research that was conducted between June 1959 and October 1960 by the Controls Section, Engineering Psychology Branch, Behavioral Sciences Laboratory, 6570th Aerospace ...
kamran's user avatar
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5 votes
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Why do drag race semi trucks slant to one side?

as the engine produces torque which is applied to the driveshaft, the engine block produces a counter-torque which must be blocked by bolting the block to the frame so the engine itself does not ...
niels nielsen's user avatar
5 votes
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Gear acceleration and maintaining torque

Apart from frictional losses, which should be fairly low for a 1:4 ratio, the torque/speed ratio is inescapable ie if you increase the angular speed by a factor of 4 the torque must be reduced by a ...
Chris Johns's user avatar
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5 votes

torque for a machine shaft

$P$ is power. $P = \tau \omega$ $\tau = Torque$ $\omega = Angular Velocity (rad/s)$ https://byjus.com/physics/relation-between-torque-and-power/
r13's user avatar
  • 8,174
5 votes

Mechanical mechanism that regulates gear's rotational velocity

To my understanding the Hartnell governor is a variation that might be applicable to your needs. Figure : HArtnell Governor source mechoholic Essentially it moves the sleeve against a compression ...
NMech's user avatar
  • 24.3k
5 votes

Mechanical mechanism that regulates gear's rotational velocity

There are multiple things going on here. Your question indicates you have a variable input speed but want a constant output speed. The answer to this on its own would be a continuously variable ...
Tiger Guy's user avatar
  • 6,793
5 votes

Is there a torque wrench you can use a "Cheater Bar" on?

As long as the force/torque is the same, the wrench doesn't care how it is applied. A beam wrench would be affected if the cheater extended past the handle; beam types depend on the torque being at ...
Tiger Guy's user avatar
  • 6,793
4 votes

Torque converter torque multiplication

Since I wasn't satisfied with the answers here, I did some studying, and I thing I can explain, what enables the torque multiplication. I will follow the fluid starting from entering the pump, and ...
Niklas's user avatar
  • 41
4 votes
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Is twisted belt configuration a good practice?

The twist introduces a sideways torque, making the belt align non-uniformly, stretch and compress non-uniformly, and rub against any stops that prevent it from falling off (or be prone to fall off in ...
SF.'s user avatar
  • 6,135
4 votes

Gear train with rack and pinion

It doesn’t really make much sense to talk about the torque of a rack for power transmission, since racks do not rotate but instead translate. Instead, it makes more sense to talk about the force of ...
Involute's user avatar
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4 votes
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Calculate torque for a cam

Does this help? Take the [Angle] that's most prejudicial to opposing F, and consider the lever arm to the camshaft centre. It looks like my screen grab is the worst case scenario, but with the ...
Paul Uszak's user avatar
4 votes
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How can I accurately measure the actuation force of small buttons (<1cm diameter) using home equipment?

If you want a quick and somewhat inaccurate hill-billy engineering answer, I would take a digital kitchen scale and place the PSV ontop of it, tare it, then load up a program to test the buttons (game,...
Jason's user avatar
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4 votes
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How does gear reduction affect a stepper motor's holding torque?

Yes, the holding torque goes up proportionally with the gear ratio. Plus the friction of the gear train, and any other seals, bearings along the gear train that add friction.
claya's user avatar
  • 56
4 votes

How to find required clamping force of bolts to prevent flange faces from twising due to torque?

The simplest way by far is to select a prospective bolt, calculate the clamping force this creates when it is torqued to rated torque, and use the bolt circle as an approximation of the moment arm. ...
Phil Sweet's user avatar
  • 4,696
4 votes

What to do to increase the hp of a gx-160 engine?

to triple the output of a 5.5HP engine, you must either triple the displacement or triple the rotating speed. there is no way to triple the displacement by boring out the block and fitting a bigger ...
niels nielsen's user avatar
4 votes
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Calculating force transferred from pinion gear to rack

The linear force of the rack is equal to the tangential force on your pinion teeth (less power lost due to friction, typically 2-3% for spur tooth and racks). Tangential force = torque/(pitch diameter/...
jko's user avatar
  • 2,347
4 votes

Mechanism for controlling the clamping force

The bicycle disk as shown is inherently prone to shimmying and spiraling into an increasing flutter. I have an Ebike with a very similar disk brake and I have learned my lesson to be cautious with it. ...
kamran's user avatar
  • 22.2k
4 votes

Does a gear retain its mechanical advantage in a 1 2 1 ratio?

No. We can show this with math. The first gear pair has a ratio of 1:2, and the second pair has a ratio of 2:1. So, discounting losses, for every turn of the input shaft, the second shaft will make 1/...
nick012000's user avatar
4 votes
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Damage to drill through torque?

The very first thing to check is the sharpness of the bit tip. a dull bit will not drill worth a d*mn and just waste your battery power. Note that it only takes one brief encounter with something hard ...
niels nielsen's user avatar
4 votes
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Torque Problems vs Motor Problem?

The motors have a rated speed of 2750rpm. It doesn't look like there's much of a gear ratio, so at the moment the motors spin at the same speed as the wheels. With 16" wheels, 2750rpm is about ...
sqek's user avatar
  • 156
4 votes

What happens if we have a rotating shaft with high RPM but very little torque?

As long as the torque is greater than any of the resistances the shaft is experiencing, then yes.
Sami Safarini's user avatar

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