You CAN use motors made as part of the frame - I have several. You simply need to very carefully cut the frame around the motor (ideally with a band-saw) making sure NOT to damage the flex connector that will almost always be present for such motors. Once cut it can be used like any removable motor.

Another amazing video. Excellent explanation and original thoughts. That's what i like the most in your videos. First request : Please never shut down your channel. It is one of the few gems here on KZfaq. Second request : Always keep your videos like this: simple!! And to the point. With pros and cons of the things discussed out. I really really appreciate your work. Keep it up!! -another tinkerer

I guess the 4-wire brushless motor has an internal star configuration wiring. So, by connecting the common pin to a DC voltage source and energising the other three pins in a correct sequence can make the motor run, much like a unipolar stepper motor. By using a decade counter with a signal generator, such as a 555 timer the motor's speed can be varied.

A start capacitor should work, you may need to play with some different values ranging from say ~20uF - 300uF and suitable AC voltage rating. Placing the capacitor between the floating phase wire and one of the other AC phase wires will result in a phase shift in the current and subsequent magnetic field shift in that winding. Resulting in a tendency for the rotor to favor to move in that direction and thus allowing the motor to start spinning up to near synchronous speed. Different the start capacitor capacitance will give different phase shift angles depending for a given winding impedance. This increased phase shift together with the increase is winding current due to the apparent change in the winding impedance due to the introduction of the capacitor impedance will result in better starting torque. Note though the starting torque will not be very high or as good as having a 3 phase VVVF driver. The added benefit of a PWM drive is good starting torque and variable speed in excess of that attainable at normal mains frequency.

Single phase create oscillating magnetic field. You need minimum of 2 phase to have a self starting motor (for synchronous motors). Also, speed of motor will be fixed (synchronous motor + 50Hz).

Thanks for sharing now I know what I can do in my old harddisk

The reson why u must give a push is because the alternating current only flows to 1 of the coils. If it was hooked up to a driver the driver would fire the coils n,s,n,s - and so on deleting that push from the beginning and have much more power and efficiency

By adding a capAcitor between ANY PAIR AND Supply the other two it will spin by itself associated with vibration my innovative friend

Very nice and useful information, thanks very much!

I swear my Mother In-law has a few of these Motors in her mouth, Once she gets started, there is no stopping here :o/

Very COoL... Beautiful little motors! Curious what the wattage draw is spinning and "not spinning". Thank you for the video.

Could you use caps to convert the transformer into multiphase one, and then energize all the coils to run the motor at higher efficiency?

1:48 "In this case we can't use the motor" I beg to differ. We can use the motor o-n-l-y in this case.

Great and informative video. Thanks for sharing.

actually motors that are a part of the frame are more usefull. if you tighten it with a vice near the shaft holding the bearing the thin aluminum cast will break and the rotor stator assembly come off in very compact form. after that you can pull out the shaft to rewind the motor if you want and in my case place 3 hall effect sensors. using this method i converted 20$ rc car into brushless rc car

In fact brushless motors work with AC current that come from electronic cuirct and control of speed by different frequency. There for its work with AC currnt that come from transformer but its slow because the 50 or 60 hertz it's so low frequency for this motor

Thank you for narrating your video. so many foreign videos don't.

Chuck a big ass capacitor across to the 3rd lead, should work like a single phase induction motor (it's how combi boiler motors work)

Thanks, very interesting.

Thanks You Sir! You did it in KISS teaching principle.

Use a brushless controller from a model aircraft and it will self start and you can select the speed by injecting a pulse between 1 & 2 mS (simple 555 circuit)

making a simple centrifuge with this right now, thankyou

Should the supply be 12 VAC maximum? And I was wondering if these little motors are basically induction motor without magnet as a rotor but more like a squirrel cage rotor?

You didn't give DC supply. Your supply was AC

it still requires that part so either way you still have to buy something or find it inside something....the same as finding a small speed controller and parts inside something but on ebay you can by the parts needed to work for like only 3 dollars for small motor like that.

Connect these to a low voltage 3-phase power source. This makes it a AC synchronous motor.

a cap between the freewire and + or - wire can run the motor without touching it forward and backwards if you change + or -

did you try with the center tap transformer for 3 terminals would it start automatically?

Thanks for this video i am going to make video on this

Now I know thanks for sharing

oh... fantastic!

Thanks.

thank you . very informative

thanks sir....

thanks for sharing your videos 😇😇

If you want a more reliable motor you can just connect a capacitor up to it and put it on a different pair of ac line creating 2-phase ac instead of just one

Nice video .. I just loved the unscrew's sound 😁

Can you in any way make the speed adjustable? And is I put a 12” platter on to the bearing can I get to it speed at 33 1/2 rpm ?

Thanks, good vid as usual, really informative. Could you show how to set up a simple driver circuit/s to drive these motors. TF sharing.

Saudações LS Ludic Science. Saudações a todos. Interessante. Deve ser possível fazer esse motor girar a mais de 30000 RPM. Tudo de bom.

Thank you

Great video re-use part and misc components is the future of humanity

very helpful, thanks

how about a wave generator??

thankyou very much!

THANKS ALOT

Un capacitor no podría funcionar para "evitar" darle el arranque manualmente?

Can you do a video on Charging and discharging caps in series and parallel under different loads?

This metod îs very good to test the motors

I've added a speed control using a sine frequency generator on my phone wgere you can adjust the frequency. I plugged my phone audio out into an amplifier which then, I connected to the motor. But after around 150 Hz, you start getting harmonic imbalances and the motor comes to a buzzing hault, because you are usung only one phase.

ooooo.... Ya te reconocí... lueguito que escuche tu voz.... like

Thanks..

Good information

Tanya om, kenapa sambungan kabel ke motor tidak diperlihatkan ? Karena banyak video yang tricky, jangan-jangan dibelakang nya sudah diganti motor ?!? Setelah disambung kabel, jangan hanya bagian muka yang diperlihatkan. Tunjukan bagian belakangnya untuk meyakinkan bahwa motor masih tetap aslinya . Terimakasih. Salam semangat. Saya senang dengan video2 LS.

What is the point or possible usage if you have to give initial run? The scratch your back maybe?

Awesome video...

Would adding a capacitor like copying the idea of a usual single phase induction motor help to maybe allow self-starting? Also is it possible to do this even?

One question Sir: Do the motors start themselfes if you add additionally a capacitor at another pair of wires?

Tnx

Please tell me this mortor oparating voltage and amp .but not working my 4 pin hard drive mortor .

use capistr wuth 3 terminal motor and it will increase speed and will do self start

So what are some potential uses for these as a stand alone motor considering the power to weight ratio?

do they chain together?

gooood idea

Very nice

It can spin by itself by using a Capacitor in every wire or can use its original harddrive's ESC.Powering the PC tower harddrive in 12v makes it spin by itself without the help of the computer's processor.

Thanks for the experiment. Why not try using a HV starting capacitor to get it started? Maybe use a microwave oven capacitor.

well done . Next tutorial .... how to connect an ESC/DRIVER

Thank you from 2022...😄

This is very interesting, I would like to know how to run the motor of the scanner laser assembly in a laser printer, the one with the octogonal miror. Please help !

Does anyone know what companies have removable motors in their hard drives?

Motor DC input voltage AC very fun.

i like it.

Got a link to the transformers please? Cheers bud ;)

might be gudh for one of those electric scooters

be nice if there was a way to reuse the controller board, perhaps in a maintenance mode. ah well. lots of nice parts in these

Motor heats very fast

*Super Cool* 👍👍👍

0:56 that's the HDD for the XBOX original

If it runs on only 50HZ frequency, that means it have only 50 rotations/second

Ese va andar como ventilador

ok thats cool but imma need a potentiometer cuz i want a 7200 rpm fan just to see if it works. then imma take a sas drive and make a blowymatron

Existe alguna manera de ajustar la frecuencia del transformador?. Se me ocurre que sería útil para una base giratoria.

can we use 12v adapter ?

How does the hard drive start the motor off? Can't you use that system to get the motor going without using your fingers?

Cool

Does it work with a 9volt transformer?

How much require voltage to run

good

can you please make a video on how to run hdd with laptop charger adapter

Those are the 3 kinds of hard drives that I've only seen in an original xbox

A question: I have a HD that seems dead. You think that changin motor i could give new life to it?

There work as a rotary encoder.

Czemu nie pokazałeś jak lutujesz przewody.

Nice videos👍👍👍💖

What is the voltage and ampier of transpormer that you are used

Use an ESC

Those HDDs could be sold as tech antiques (for a lot of money) many decades later (on eBay). 🤔😉

how about RC controlers with those motors?

@ 01:23 - 01:40 kzfaq.info/get/bejne/e7h0iNmUs77ShGw.html (make sure you use timestamp references in either description part or in the post there for easy navigation) 😉