Spin 169 - U vs V Groove Pulleys

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Dreaming Robots

7 ай бұрын

In my test I show that a V-groove pulley required about 4x the force to cause a belt to slip.

Пікірлер: 9

@daniellebissonnette3304 7 ай бұрын

Cool! I never really had much interest in machines before I started spinning. I recently bought an antique double drive spinning wheel, it actually leverages the exact principles you just explained to make it alternately spin the fibre and wind it onto the bobbin. So the bobbin has a U shaped groove, while the whorl has a V shaped groove, and this allows the strap to slip on the bobbin groove while you spin - the strap will only grab into the bobbin groove and wind the yarn when you let go of the yarn. This is so clever and I have profound admiration for those inventors who came up with these systems that unable us to create yarn and cloth. Maurice, you are right up there with the best of them, creating quality and accessible machines. Thanks for sharing 😊

@lindaspins 7 ай бұрын

I sort of knew this about pulleys for some reason, but you give an excellent, detailed explanation!

@OvisAriesFarm 7 ай бұрын

Super interesting thank you!

@OvisAriesFarm 7 ай бұрын

I’m completely drive system agnostic. I just noted chains are used on high performance carders. I believe in science so if you’ve got methods that work for your design within spec that’s awesome! My concern about pulleys vs chain is more about them stretching over time

@vilajones8625 5 ай бұрын

I still can't get my nano to take up I've tried every thing i don't know what else to do. I have the maybe the first nano i haven't been able to do much with it. I spin then i hand wrap it on but tired of that please help

@IcarusAerial 7 ай бұрын

I would think that you'd want a belt for slip to keep it from binding and breaking something elsewhere (drum carder). Kind of like a slip clutch.

@IcarusAerial 7 ай бұрын

I mean vs chain/gears. I do a gear drive from something I'm designing for a brother drum carder (not for sale, just to make my wifes better than manual) direct from motor to the drive shaft, then the belts on the other side. That way the motor is strong and keeps turning and the licker will bind and the belt will slip instead of causing damage. At least that was my assumption.

@DreamingRobotsBlog 7 ай бұрын

@@IcarusAerial There are belt, chain and gear drum carders our there. They all have pros and cons. I do like using the belts as a clutch as you described. It's a big reason I use them with u pulleys on my espinners. For a drum carder though the torque will get much higher then eSpinners. So you need to figure out the max torque you want at the licker and swift drums and then figure out what kind of drive to use. There are other ways to not damage things like with software and a belt/gears, but there are physical limitations to how fast such a system can react. I personally think you can probably make a great drum carder with different drive systems. There are pros and cons to each though, and if you don't think carefully about it then you sometimes end up with an underperforming system.

@IcarusAerial 7 ай бұрын

@@DreamingRobotsBlog makes sense! I was actually considering designing a tpu type internal mount for a gear ring so it'd have an initial grab to catch before the Arduino or whatever program I wrote has a chance to react.