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# What gear turns faster if the gear is smaller than the driven gear?

Updated: 9/26/2023

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Q: What gear turns faster if the gear is smaller than the driven gear?
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### Which gear turns faster if the driving gear is smaller than the driven gear?

The answer does not depend on which gear is driving. Linear-wise, the two gears are meshed so the teeth are moving at the same speed. Rotation-wise, the smaller gear has smaller radius so it is "turning faster" in terms of RPMs.

### Which gear turns faster if the driving gear is larger than the driven gear?

according to velocity ratio i.e N1/N2 = D2/D1 which implies that diameter of gear is inversly proportaional to speed . hence, DRIVEN GEAR will move faster as it is smaller in size than the DRIVING GEAR

### Which gear turns faster if both driving and driven gear are the same?

If they are the same, they will turn at the same speed.

### What is the formula of a driven gear and a driving gear?

Turn the drive gear 1 complete turn, and count how many times the driven gear turns. For example, to figure out the rear end gear ratio if the drive shaft turns once and the rear turns 3 and a half times you have a 1:3.5 gear ratio. This means the rear wheels turn 3.5 times for each one turn of the drive shaft.

### Why gear with less number of teeth has poor strength?

It depends if the gear is driving or being driven. A large gear pulling a smaller one gives speed, while a small gear pulling a larger one gives power. The reason has to do with the number of times they turn in relation to each other. That is also known as the gear ratio. For instance, if a gear has to turn a gear that's ten times it's size, the drive gear has to turn ten times before the output gear turns once, thus converting speed to power. However, a gear driving a gear that is 1/10 its size means that the driven gear would get to turn ten times for each time the driving gear turns, thus converting power to speed. In practical usage, keep in mind that older manual transmissions were made to where all the forward arrangements but the 4th gear were made to where the driving gear (the one connected most directly to the crank shaft of the engine) is smaller than the driven gear. So in the first three gears, the engine turned faster than the drive shaft. In those transmissions, 4th gear usually had both gears in that set the same size so the drive shaft is turning at the speed of the engine, Then once automakers began to add overdrive, that meant that 5 and higher gears were paired to where the driving gear (engine side) is larger than the driven gear (drive shaft side) to allow the drive shaft to turn faster than the engine.

### What is driven gear?

A driven gear is a output gear

### What is a driven gear?

A driven gear is a output gear

### What turns the Distributor on a 1992 Dodge Dakota 3.9 V6?

The oil pump drive gear, which is driven by the camshaft, drives the distributor.The oil pump drive gear, which is driven by the camshaft, drives the distributor.

### What is a driver gear?

a driven gear is a gear that controls the driven gear.

### What is driver gear?

a driven gear is a gear that controls the driven gear.

### Does an idler gear change the speed of the driver gear?

No. But if there are two idler gears, one smaller than the other, say a 12 tooth and a 6 tooth. the 12 tooth idler is the idler of the driver gear which has 24 teeth, making the idler gear rotate 2 times for every rotation that the driver gear rotates. Now, if the 12 tooth idler gear is rotating 2 times faster than the driver gear, then the 6 tooth idler gear will rotate 2 times faster than the 12 tooth idler gear. So, the 6 tooth idler gear is rotating 4 times faster than the driver gear. Let's say that the driven gear has 12 teeth. For every rotation of the 6 toothed idler gear, the driven gear rotates halfway.

### Why do gears have a gear ratio?

When one gear is used to drive another, the number of teeth on each gear will factor into the ratio. Even if the number is the same it will have a 1 to 1 ratio. In a rear axle, for example, a common ratio is 41 teeth on the ring gear (driven gear) and 11 teeth on the pinion gear (drive gear). 41/11 is 3.727272 or commonly called a 3.73 to 1 ratio. It take 3.73 turns of the drive gear to get one turn of the driven gear. If you are interested, the different ratios provide different combinations of speed and power. Thus a large gear pulling a smaller one gives speed while a smaller gear pulling a larger one gives power.