**First....What is torque?:**

Torque is a twisting force- (it doesn't do any 'work' itself- it is simple an application of energy).

Work (or 'stuff') happens, when torque is applied and movement occurs.

"Torque is a force that tends to rotate or turn things. You generate a torque any time you apply a force using a wrench. Tightening the lug nuts on your wheels is a good example. When you use a wrench, you apply a force to the handle. This force creates a torque on the lug nut, which tends to turn the lug nut.

English units of torque are pound-inches or pound-feet; the SI unit is the Newton-meter. Notice that the torque units contain a distance and a force. To calculate the torque, you just multiply the force by the distance from the center. In the case of lug nuts, if the wrench is a foot long, and you put 200 pounds of force on it, you are generating 200 pound-feet of torque. If you use a two-foot wrench, you only need to put 100 pounds of force on it to generate the same torque."

In summary:

English units of torque are pound-inches or pound-feet; the SI unit is the Newton-meter. Notice that the torque units contain a distance and a force. To calculate the torque, you just multiply the force by the distance from the center. In the case of lug nuts, if the wrench is a foot long, and you put 200 pounds of force on it, you are generating 200 pound-feet of torque. If you use a two-foot wrench, you only need to put 100 pounds of force on it to generate the same torque."

In summary:

Torque equals Force multiplied by Distance |

**How does gear ratio affect Torque?**

Simply put, torque at work (such as at a wheel) is your motor's torque times your gear ratio.

Motor Torque x gear ratio = torque at the wheel |

Lets say we have a 10rmps motor that is capable of 5 oz Torque (we know this from our motor spec.)

Lets say we have 2 gears. Our input gear (attached to our motor) has 10 teeth Our output gear has 50 teeth

Our Gear ratio is 5:1

Motor Torque x gear ratio = torque at the wheel

5oz x 5:1 = 25 oz

What if our gear ratio were 1:3 ?

5oz x 1:3 = 1.6oz

Lets say we have 2 gears. Our input gear (attached to our motor) has 10 teeth Our output gear has 50 teeth

Our Gear ratio is 5:1

Motor Torque x gear ratio = torque at the wheel

5oz x 5:1 = 25 oz

What if our gear ratio were 1:3 ?

5oz x 1:3 = 1.6oz

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Information visualization Low

thank you, my concept about torque are much clear than before.

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As you wrote above: "In the case of lug nuts, if the wrench is a foot long, and you put 200 pounds of force on it, you are generating 200 pound-feet of torque. If you use a two-foot wrench, you only need to put 100 pounds of force on it to generate the same torque." So, can I understand that bigger engines, like american big block V8s, can generate more torque than smaller engines, whilst they have bigger connecting rods?

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Yes fun w 2 gears so if it were 3 or more is the math the same-

5:1:5 would be 5.

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Where you get the formula of this:

"Motor Torque x gear ratio = torque at the wheel"

you should put citation.

No. 5:1:5 would cancel. Take this example of a 5:1:5. A 40 tooth gear drives an 8 tooth gear(5:1) yeilds 5, but the next change is 8 teeth driving 40 teeth (1:5) yeilding 0.2, the third gear has the same torque as the first because you multiply by 5 then by 0.2 which equals 1, so there is no change. One might ask, "Why bother with such a set-up?" The 3rd gear is rotating in the same direction as the first. If you simple went 40:40 (1:1), while the second gear would have the same torque it would be rotating in the opposite direction.

No. 5:1:5 would cancel. Take this example of a 5:1:5. A 40 tooth gear drives an 8 tooth gear(5:1) yeilds 5, but the next change is 8 teeth driving 40 teeth (1:5) yeilding 0.2, the third gear has the same torque as the first because you multiply by 5 then by 0.2 which equals 1, so there is no change. One might ask, "Why bother with such a set-up?" The 3rd gear is rotating in the same direction as the first. If you simple went 40:40 (1:1), while the second gear would have the same torque it would be rotating in the opposite direction.

Hey ive a doubt,what if the smaller wheel were to be run by the bigger wheel,lets say for instance a 22 teeth wheel drives(input gear) a 11 toothwheel(output gear) then wouldn't the torque be more,since for one single rotation of the larger whell the smaller will rotate 2 times?can i get an answer ?

Hey ive a doubt,what if the smaller wheel were to be run by the bigger wheel,lets say for instance a 22 teeth wheel drives(input gear) a 11 toothwheel(output gear) then wouldn't the torque be more,since for one single rotation of the larger whell the smaller will rotate 2 times?can i get an answer ?

Hey ive a doubt,what if the smaller wheel were to be run by the bigger wheel,lets say for instance a 22 teeth wheel drives(input gear) a 11 toothwheel(output gear) then wouldn't the torque be more,since for one single rotation of the larger whell the smaller will rotate 2 times?can i get an answer ?

In a 1:1 would the size of the sprocket make a difference? we adjusted the speed of a machine at work that was #60 chain on a 23t to 16t by swapping the gears... the change was to much. I suggested going 1:1. Any reason to use 23t&23 vs 16t&16t (as far as speed and/or tq?) Thanks

Thanks this was really helpful.

Prime the unit before fitting it and check all components before replacing them - if they're old and worn, they too should be replaced. Don't grip the piston rod with pliers or place the unit itself in a vise, you'll damage it.

Wheel alignment Balancing machineCar Wheel alignment Balancing machine in Delhi, IndiaI should tell you: everyone in America with the hot rod V8 knows that.

Yes, of course. Bigger engines generate more torque than a smaller engines as they have longer links and greater force as well.