[WIP] Perpetual Motion Machine

[allanp]

OUCH! that kind of hurt!

Kinda needless too in the context of this discussion.

[JJ2]

Kinda needless too in the context of this discussion.

Sorry.

Back to the topic:

Boxerlego I hope you succeed in building this!

[bonox]

Kinda needless too in the context of this discussion.

How so? This whole thread is about perpetual motion - all the way up to the thread title. It's merely another song lyric comment in regard to the quoted line about the earth being a perpetual motion machine because of rain cycles, when it's clearly not! You didn't have a problem with the first lyric - what's wrong with the second? The server was even kind enough to alter the original lyric into a lego theme too

The fastest and quickest way to start showing that this project has legs is to create the spinning disk just as it is - no magnets, doodads or widgets necessary - and give it a spin. Put it on video and show it stays spinning for a few weeks without needing another push and you're well on the way to showing feasibility.

[Blakbird]

How so? This whole thread is about perpetual motion - all the way up to the thread title. It's merely another song lyric comment in regard to the quoted line about the earth being a perpetual motion machine because of rain cycles, when it's clearly not! You didn't have a problem with the first lyric - what's wrong with the second? The server was even kind enough to alter the original lyric into a lego theme too

Most people (including myself) probably didn't recognize it as a lyric, but it really doesn't matter. Bringing inflammatory anti-religeous rhetoric into a Lego forum is unnecessary.

[JM1971]

I've seen supercooled magnets running on their own years ago on the news, we might have to wait until superconductors work at room temperature?

Not all of these so called phsyics laws are right, they say you can't blow your own sail, in fact you can.

How many people have gave up their experipments because a know it all says it can't be done?

Edited August 18, 2015 by JM1971

[Boxerlego]

Sorry.

Back to the topic:

Boxerlego I hope you succeed in building this!

Thanks JJ2! There is tons of stuff I want to say about this motor and how it going to work. This is not your average DC electric motor that Thomas Edison made. This motor here I made is going to be a huge step up towards how we generally think DC electric motor should operate. I will say it simply like this on Thomas Edison DC motor it is a 1:1, 1:2 or 2:1 ratios between electromagnets and magnets. However, on my DC motor it going to be 1:3 ratios 1 electromagnet for every 3 magnets which in theory will triple the DC motor power output at the shaft. I wont go in to full blown detail how I accomplish this at the moment. That is all I'm going to say about this for now but think how this would effect the notion how DC/AC motor in theory should operate for the time being. Now I'm almost finished with the 18 pole magnetic rotor I just need to assemble it. Another thing I'm building the magnetic rotor in a way that if I'm not happy with it I can always make another one and do improvements on it and see what works best. That is one of my LEGO goals right there for the DC motor.

Edit: The ratios between electromagnets and magnets has been corrected for simple DC motors. This usually is dependent on how many poles the armature has in conjunction with the placement of the field magnets. I will expand on this later.

Edited August 18, 2015 by Boxerlego

[Rockbrick]

some great PP machines here:

Edited August 19, 2015 by Rockbrick

[Cumulonimbus]

@BoxerLego

Forgive my ignorance, but why are you're limiting yourself by (partially) building with Lego bricks? I didn't read your topic in depth, but from a distance it seems that whatever your goal is, building in plastic bricks instead of raw materials is an inefficient way of designing a machine which will need a high degree of accuracy and require very strict tolerances to come even close to its full potential. Anyway, good luck, the best inventions are made by men in sheds.

[Boxerlego]

@Cumulonimbus: Thanks, I have plenty of good reasons why I want to build this with LEGO bricks. The only thing I felt that LEGO couldn't handle is the RPM and torque this motor could produce, That is why I opted for having metal bearings along with a metal shaft instead of the simple LEGO Hole and Axle. As for the structural design part I felt LEGO was the way to go. To over come the short comings of the LEGO structural design I use M4 machine bolts for adjusting to achieving the tight tolerances between the coils and magnet so it can function near full potential. The best reason of all for it to be constructed out of LEGO is that if in a rare case that this machine becomes perpetual motion is that it going to be very hard to suggest there is any hidden power sources here.

[Boxerlego]

Here is a picture of the Magnet rotor with out the magnets, it is still WIP. Now its time for a rough draft of the build so far.

First thing I did was even the metal wheel rods or spokes out and then sanding down the PVC wheel so it sits flat level as possible in that I can accurate make center line around the wheel to measure and drill holes close to center as possible for the spokes. Once I was able to insert the spokes in the PVC pipe and see if the rods are aligned with the Hex-nut properly. Then the next part is fine tuning the wheel out with LEGO bricks so that the wheel can be inspected that it is even around the edges and sides so that is spins nice and flat. Now some important things to know about the LEGO jig is to use the right size socket and bolt for the hex nuts so the entire jig can sit flat and level on the table in conjunction with the washer, The hex-nut along with the PVC Wheel. Once the LEGO jig is done it will then be used to complete the final part for the locking in place the wheel with JB weld. Then I finished the locking the Hex-nut in the rotor with JB weld on the Lego jig so that the JB weld sets in place while the wheel is sitting level as possible on the LEGO bricks. Now you cant even see the JB weld here in the picture because it is between the metal washers that is how well I thought it out.

002 Magnet Rotor Wip by boxerlego, on Flickr

[Boxerlego]

Update: The Electric motor is nearing completion. The magnet rotor build was a success. For the most part I'm very proud of this build and how it turned out. I done lots of math in the making of the Magnet rotor build and I got to say that everything from the size of the magnets to the size of the rotor have been to also including the size of the Lego parts as well and this was kinda of hard since I'm forced in to combing both systems of measurement metric and inches. Well enough if this math stuff now for the more interesting part.

washer and nut by boxerlego, on Flickr

In this picture above is a washer and a 3/4 standard hexnut. The hexnut threads has been rounded out with a round file by hand for the wheel spacer (see wheel spacer 1 for example) so the magnet rotor shaft is able to fit inside the bearings on the motor.

Wheel hub mounting nut 1 by boxerlego, on Flickr

Next part is to Jb-weld the nut to washer and this can easily be done with the correct size bolt that fits the nut and washer. This part will be used to make a mounting hub nut for the spokes on the wheel.

Wheel hub mounting nut 2 by boxerlego, on Flickr

Wheel Spacer 1 by boxerlego, on Flickr

Here is the wheel spacer, it is comprised of two bearing inner races (Important note: The exact same bearing inner races that you will find on the bearings you see with the motor, you just got to dismantle the bearing to get them) and a washer. The bearing races will need to be able to fit inside the Wheel hub mounting nut and the washers that is there will stack together which in turn will level and even itself out. This also needs to be Jb-weld for everything to be lock in place.

Wheel spacer 2 by boxerlego, on Flickr

Rotor magnets by boxerlego, on Flickr

Here is the final part for the completing the magnet rotor is putting the magnets on. Here in this picture you can see that I have added 6 magnets to the rotor. My goal was to put 18 magnets on it but since this was my first attempts to build a magnet rotor, so I settled for 6 magnet on this. I plan to add more magnets on my next magnet rotor build but overall I need to improve on the ability to effectively to secure the magnets on the rotor so I can improve on increasing the number magnets.

[Boxerlego]

The micromotor just got an upgrade.

LEGO Magnet Rotor Axle Bearing Race Bushing by boxerlego, on Flickr

[oracid]

I presume that this micromotor goes at the center of the machine you showed us at the beginning of this topic.

Off topic, can you tell us what glue do you use? I would appreciate a link address.

[Boxerlego]

That was close, I was just referring to the machine as the micomotor here because the micromotor pulley wheel is on it. Here the pulley has important use to securing the Inner bearing race to the Lego axle shaft.

I use JB-weld, here is the Link: http://www.jbweld.com/ It not really glue either. Once you use it you will know the difference.

[Andy D]

Is it possible you will have this complete next year by the anniversary day (+1) of the original post.

Looking forward to it... (as I duck and run for cover)

Andy D

[Boxerlego]

Well, I've actually got the motor running two days ago but overall the motor project is never completed as I plan to make improvements along with more designs for this. Currently the way the first motor design is working as a BLDC motor and was built from the circuit plans presented in this video below.

[9v system]

Well, I've actually got the motor running two days ago but overall the motor project is never completed as I plan to make improvements along with more designs for this. Currently the way the first motor design is working as a BLDC motor and was built from the circuit plans presented in this video below.

Can you show us it working?

[Boxerlego]

I certainly can, I got the motor running right now Tho I'm just not finished with some things yet like the other end of the motor shaft and calibrating the circuit Right now I think the transistor is not turning fully on for full power from the 12v wall adapter but it still runs good

[Boxerlego]

Video is now up of it working

[JJ2]

Wow that is awesome amazing how quiet it is! How much torque does it have?

[Victor Imaginator]

Good start for crawler more powerful than Zblj's Fox)))

[Boxerlego]

Wow that is awesome amazing how quiet it is! How much torque does it have?

Thanks, right now I don't know how much torque it has. There is still more improvements that can be made to it for better torque output.