Sprockets & Chains For Engineers

Рет қаралды 38,474

Күн бұрын

Use Gear ratio to calculate output torque, speed and rotations based on input values for both Sprockets and Chains as well as Pulleys and Belts. Learn how an idler pulley or sprocket can be used to maintain tension in a belt or pulley. Also learn a trick for determining the direction of rotation of shafts when connected via a belt or pulley.
The application of sprockets and chains most commonly come up on motorcycle drive trains as well as mountain bike drive trains. Belts and pulleys can commonly be found driving alternators and steering pumps in cars as well as timing belts to control the motion of overhead cams for engine intake and exhaust valves.
The study of sprockets and chains in both physics and engineering is based largely on the application of simple gears these systems.

Пікірлер: 23

@RossDuClair Жыл бұрын

Great tutorial. Exactly what I wanted to learn. And, the lesson featured the mathematics. I am replacing the rubber belt on an air compressor with chain and sprocket.

@INTEGRALPHYSICS Жыл бұрын

We aim to please.

@Swenser 4 ай бұрын

Add a practical. How to choose and match chains, belts and cogs to one another.

@kesor6 7 ай бұрын

If you take the strength of the material out of which the gears are made, and the surface area where gears are meshed vs. the chain surface area touching the pulleys - there is yet another major difference between these two. Of course for this we also need to look at friction and we cannot just neglect it.

@INTEGRALPHYSICS 7 ай бұрын

Capstan Eqn.... Now there's a video that needs to get made.

@bodeine454 Жыл бұрын

I'm going to be building a homemade vehicle (car & light truck) tire changing machine but instead of making it manual, where you have to pull the bar around the center post to install or dismantle a tire, I'd like to motorize it. I'd mount the motor under the platform that the tire sits on and either have it turn the bar around the tire or make the bar stationary and have the motor spin the tire (and platform). I need it to turn the bar or the tire fairly slow, maybe one revolution in 10 or 15 seconds so I need a high torque but slow rpm at the driven pulley or sprocket (I'd like to run cogged pullies with a cogged belt). Without getting technical about it I'm thinking that an electric winch with a pulley connected running a belt to the driven pulley turning either the bar or the platform but I'm not sure what size pullies I would need. I also thought about getting a high torque windshield wiper motor or a similar gear reduced 120V motor but I need to figure out what size pullies I need to keep it high torque but not run the bar or platform so slow that I can pour a cup of coffee and drink half of it by the time it makes one revolution but also not so fast that the white on white lettered tires doesn't just fly off 😆! But seriously, I need to figure out the pulley sizes I need to allow it to turn in a slower controlled manner but still have enough torque to do the job.

@Piddyx Жыл бұрын

This is a great video, and l like your lettering.

@jawspeak Жыл бұрын

Great explanation and content. Thanks

@INTEGRALPHYSICS Жыл бұрын

You are welcome!

@paulstan2449 Ай бұрын

Very nice,..excellent drawing.

@INTEGRALPHYSICS Ай бұрын

thanks.

@oswaldocastillo6305 5 ай бұрын

You should do a video, if chain size like a 35 chain & a 428 with same gearing have the same impact in speed/power & if you can go higher gear ratio with a bigger chain size like 428 & get better speed & power then a 35 chain.

@INTEGRALPHYSICS 5 ай бұрын

I did a video on chain/belt tension vs torque a few weeks ago. You bring up a good point though... Its not uncommon to see guys swapping street bikes chain sizes looking for gains.

@oswaldocastillo6305 5 ай бұрын

@@INTEGRALPHYSICS well some change chain for durability but bigger tooth means less gearing, since in some engine really cant go that high. In my mini bike i have a #35 18t clutch & 70T rear sprocket tops at 61mph & i have a mini quad that has 428 18T front spricket & 35T rear sprocket. But that engine has 3 speed trans & tops at 46mph. But different engines & chassis. I want to put a 428 in my mini bike see if i can get a higher speed & acceleration with a higher gearing..

@ericyang4692 7 ай бұрын

Im a little late to the posting of this video, but how would one calculate the tension in the chain of the systems shown in the video and how does this change in the tight vs loose sides of the chain?

@INTEGRALPHYSICS 7 ай бұрын

You bring up a great question. I'll try to get to making a video on this.

@ronaldbethem7717 Жыл бұрын

If I add a jackshaft to a chain drive just to gain offset to accommodate a wider tire and the jackshaft has the same number of teeth on both ends, will the number of teeth on the jackshaft change my final drive ratio? Thanks

@INTEGRALPHYSICS Жыл бұрын

All other things being equal a GR of 1 wont change anything.