# Powering Propeller with Pulley

• dislect
In summary, a gear mechanism akin to a bicycle gear setup would accomplish this. Start off in low gear, once it gets up to speed, you switch gears on-the-fly. Alternatively, you could have a governor that fed back into the system so that, as the axle sped up, it would cause the pulley to move from the small end of the cone to the large end.
dislect
Hi everyone!

I want a string on a pulley to supply the power for the propeller, meaning i pull the string and the force is transformed to the propeller. I was wondering how could i create the system so that i can pull the string time after time and give the propeller more power (keeping somewhat of a constant speed and not just a one time pull) without stopping or disturbing its rotation.

any ideas? thanks !

dislect said:
Hi everyone!

I want a string on a pulley to supply the power for the propeller, meaning i pull the string and the force is transformed to the propeller. I was wondering how could i create the system so that i can pull the string time after time and give the propeller more power (keeping somewhat of a constant speed and not just a one time pull) without stopping or disturbing its rotation.

any ideas? thanks !

A gear mechanism akin to a bicycle gear setup would accomplish this. Start off in low gear, once it gets up to speed, you switch gears on-the-fly.

There are transmissions that use a continuous, fluid movement to gear up, rather than the chunkiness of gears. I can't remember what they're called. Instead of gears, they use a pulley over a sort of cone-shape. Some autos of yore had this.

You could have a governor that fed back into the system so that, as the axle sped up, it would cause the pulley to move from the small end of the cone to the large end. Durr... technical terms escape me right now
...

Here's a concept:
[PLAIN]http://blog.arwdesigns.com/pics/CVT/CVT1.jpg

Last edited by a moderator:

## 1. How does a pulley power a propeller?

A pulley works by using a belt or rope wrapped around a wheel to transfer force or motion from one point to another. When a pulley is connected to a propeller, the rotation of the pulley causes the propeller to spin, creating propulsion for a boat or aircraft.

## 2. What are the benefits of using a pulley to power a propeller?

Using a pulley to power a propeller allows for a more efficient and smoother transfer of force. The pulley can also help to reduce strain on the motor or engine powering the propeller, resulting in less wear and tear and potentially longer lifespan.

## 3. Can a pulley system be used to adjust the speed of a propeller?

Yes, a pulley system can be used to adjust the speed of a propeller. By changing the size of the pulley or the number of pulleys in the system, the speed of the propeller can be altered. This can be useful for maneuvering in different water conditions or for achieving different levels of speed.

## 4. Are there different types of pulleys that can be used to power a propeller?

Yes, there are different types of pulleys that can be used to power a propeller. The most common types are fixed pulleys, movable pulleys, and compound pulleys. Each type has its own advantages and can be used in different ways to power a propeller.

## 5. How can I ensure the safety of using a pulley to power a propeller?

To ensure the safety of using a pulley to power a propeller, it is important to regularly check the condition and functionality of the pulley and its components. It is also important to follow safety guidelines and use proper protective equipment when operating the pulley and propeller system. Proper training and supervision should also be provided for those operating the system.

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