How do you calculate the gear ratio of a compound gear?

How do you calculate the gear ratio of a compound gear?

The easiest way to calculate the gear ratio of this compound gear train is to consider each gear set individually, starting from input moving to the output. Then use the same formula as the single gear set by dividing the number on teeth of the driven gear by the number of teeth on the driving gear.

What is the compound gear train?

The compound gear train has two gears on some of the shafts. One of the gears acts as a driven ‘input’. The other, differently sized, gear is used to drive the next gear in the train. Of course, all the gears fixed onto the same shaft rotate at the same rate – the rate of rotation of the shaft.

What is the train value of gear train?

Explanation: Train value = Speed of the last driven or follower/Speed of the first driver. Explanation: When the axes of the first gear (i.e. first driver) and the last gear (i.e. last driven or follower) are co-axial, then the gear train is known as reverted gear train.

How do you calculate total gear ratio?

To calculate the gear ratio: Divide the number of driven gear teeth by the number of drive gear teeth. In our example, it’s 28/21 or 4 : 3. This gear ratio shows that the smaller driver gear must turn 1,3 times to get the larger driven gear to make one complete turn.

What is a compound gear used for?

Compound gear trains involve several pairs of meshing gears. They are used where large speed changes are required or to get different outputs moving at different speeds.

How does the gear train work?

A gear train includes at least two gears that work together to increase torque, increase speed, or change direction. A gear train includes a driver gear and a driven gear. Power is applied directly to the driver gear which causes it to rotate.

Which gear train is used in differential?

epicyclic gear trains
The epicyclic gear trains are used in the back gear of lathe, differential gears of the automobiles, hoists, pulley blocks, wrist watches etc.

What gear ratio is best for jig fishing?

Spinnerbaits, jerkbaits, swimming jigs, topwaters and most other baits are best served with a medium speed reel. When I’m spinnerbaiting, for example, 5:1 is just too slow for anything but slow-rolling, and 7:1 is too fast — you have to slow down just to keep your bait in the water. A medium gear ratio is just right.