How do you calculate a pulley system?

To calculate the mechanical advantage of a pulley you simply have to count the number of rope sections that support whatever object you are lifting (not counting the rope that is attached to the effort). For example, in a one pulley system the MA is 1. In a two pulley system the MA is 2.

Is belt drive better than Chain bicycle?

Quieter. A metal chain meshing onto metal sprockets and running through derailleurs makes quite a bit of noise – noise you’re only really aware of if then ride a belt-drive bike, which is almost silent. More durable. Chains get longer as their pivots wear away, and the gearing performance deteriorates.

Are belts more efficient than Gears?

Belts are more efficient because, gears are occasionally made of dense material and you take some of the input power just to rotate the gear. While in belt drives, especially timing belts, the pulleys are made from lower density materials. Belt drives: Belts are quiet during operation, yet require frequent maintenance.

What are the disadvantages of chain drive?

Disadvantages of chain drives

They can not be used where slip is the system requirement.
They require precise alignment compared to belt drives.
They require frequent lubrication.
They have less load capacity compared with gear drives.
Their operation is noisy and can cause vibrations.

What are the disadvantages of belt drive?

Disadvantage of belt drive

Limited Speed range.
They are not compact.
Considerable power loss.
Short service life compared to other mode power transmission.
The velocity ratio may vary due to belt slip.
They inflict a heavy load on shafts and bearings.

What are the advantages and disadvantages of gear drive?

Gear drive or belt drive?

Gear drive	Belt drive
Requires less space compared to belt drive.	Requires more space compared to gear drive.
Low friction loss compared to belt drive, therefore higher transmission and more efficiency.	High friction loss compared to gear drive, therefore lower transmission and less efficiency.