1990 Eccentric Cycloidal Power Generator

If you are interested in this you can find the stl files here
www.thingivers...

[@hunnybunnysheavymetalmusic6542]

Looks like, so long as you can keep it past its shift slip point, it should turn with relative ease. ~( 'w')/ Even though one may not see it as 'low friction' I see it as 'continuous impulse' which, in this case, sort of acts to reduce friction by always keeping some portion of the interface at the moment of peak mechanical advantage.

[@grinningtiki220]

Eccentric Cycloidal is to much to say. I now dub it The Noodle Gear.

[@kenvater2843]

If you increased the size of your magnets , which would increase the magnetic flux working on the serpentine coil, the mass would increase, which would allow for a bit of energy storage, giving you a smoothed relatively constant motion between gust of wind in a flywheel effect, Decreasing voltage fluctuations. Splendid Vlog as usual Rob.

[@bokkeman123]

Since the magnet "flywheel" will drive the worm gear in reverse, won't it be braked during a lull by the wind turbine impeller moving against the now-sluggish air? It seems to me a flywheel needs some sort of clutch/freewheel mechanism.

[@threeMetreJim]

@@bokkeman123 A centrifugal clutch of some kind would be great.

[@AlyxGlide]

a flux capacitor, you say?

[@undercoveragent9889]

@@bokkeman123 Also, I would be concerned about the 90% reduction in torque when the generator has a load on it. Plugging something into this generator would cause a braking effect and slow down the rotor, wouldn't it?

[@BoyKhongklai]

You're the first one to actually explain how these cycloidal drives work. And I've seen hundreds of them popping up as of lately 😊

[@seansersmylie]

Fantastic, you're making great progress! I'm learning a lot from your videos.

[@marcfruchtman9473]

That eccentric cylcoid looks almost impossible to machine properly... luckily you can print it! The gear ratio is quite good too!

[@Rhannmah]

3D printing is really incredible for geometries like this. You can produce parts with very little effort that would be otherwise impossible to machine. You can even print functional multi-part embedded machines that work right off the print plate.

[@trevorgoddard2278]

Actually a 4 axis CNC milling machine where the fourth axis is rotational and a ball ended milling tool would make this type of gearing relatively easy to produce. such machines and tools are readily available (at fairly reasonable prices).

[@Rhannmah]

@@trevorgoddard2278 yeah, but I can 3D print self-assembled ball joints that work immediately. This or any other type of self-interlocking mechanisms, literally impossible to do with subtractive manufacturing.

[@kadmow]

@@Rhannmah , but... With real machining tools one can make things that work more reliably than as toys. Tips and tracks for the real world, horses meat courses (sic) at the dinner table.

[@marcfruchtman9473]

@@trevorgoddard2278 Um, what is your idea of "reasonable"... I repaired, setup, and trained people on CNC Mill and Lathe in the South East USA for a while... and those machines weren't cheap. Ranged from 35K and up for just 3Axis and that was over a decade ago.

[@cahito00]

That’s awesome! 16 V is quite a lot for this arrangement, compared to what you’ve done before… but what if you could do a rotor that has magnets “inside” and “outside” the coil? Would that double the output?!?

[@vylbird8014]

A laminated iron core for the stator would tremendously increase efficiency, but then you couldn't 3D-print it - you'd need to laser-cut steel sheet and build it.

[@nooneofconsequence3658]

That's a cool idea! That made me realise that only half the magnetic field is utilised in the current design. If you were to change the rotor so that the magnets were arranged around a raised 'rim' so that you could have two stators - one outside, as it's shown now, and one inside. (imagine the rotor as a cylinder - the magnets centered in the cylinder wall and one stator located outside the cylinder and another stator inside the cylinder). That should double the output as well?

[@nooneofconsequence3658]

@@vylbird8014 Wouldn't the magnets want to 'stick' to the iron core?

[@vylbird8014]

@@nooneofconsequence3658 They would. You have to design it to balance out most of the force, then use a bearing that can handle it.

[@_..-.._..-.._]

Doubling output still requires doubling input, you can add a thousand magnets on there but it will stall your propeller if you draw too many amps.

[@TomFarrell-p9z]

A quick google suggests these things are essentially free of backlash. If true, they would make great mechanisms for telescope pointing.

[@TuttleScott]

or cnc and 3d printers

[@helenslater700]

Hiya Robert ... I love your videos and ideas ... Please could I ask the amps for the 16v....

[@ogi22]

That is really amazing! Very interesting thing is how it behaves when you stop adding more power. Just adding some weight to that magnet disc will make it a much better flywheel. Then add some separation between gears and a flywheel (ratcheting or other also discussed in previous episodes) and we have a perfect device for a wind turbine 😊

[@ruimartins7402]

Or a hydro turbine

[@_..-.._..-.._]

Separation between gears? If I’m correct, the tighter these gears (to a point) the less rubbing and friction forces there are, o think this would have to be oil bathed or Teflon coated gears and a clean box around them.

[@ogi22]

@@_..-.._..-.._ If i may be so bold and remind a formula for a friction: T=fN. Where T is our friction force, f is a coefficient of friction (depending on 2 materials - irrelevant) and N is a "normal force" - a force with which 2 bodies interact. So, according to a formula from primary school, the more you push something against something else, the bigger friction you will get... So i will have to say that "the tighter these gears are, the more rubbing and friction forces you will get" 🙂 Next thing is a tooth geometry, rubbing and so on, but this is just opening a mechanics book on gears and people wrote a ton of papers in that subject:)

[@danielbuckman2727]

Really cool! I could use that on a bunch of my projects. Cheers to the inventor!

[@victoryfirst2878]

Rolling sliding contact is most definitely the way to go Robert. Excellent lifespan from this design. Nice work fella too. Peace vf

[@glencahalin4786]

Also seems quieter than the more normal gears, which is nice bonus in a wind turbine.

[@markgeurts258]

Indeed!😀

[@POKERDEAL]

Looks like it would make a good fly wheel too after you stopped turning it . Can you stack these like the planet gears ⚙️??

[@POKERDEAL]

As they can handle more tork

[@maxkennedy5073]

10x RPM not 10x speed. Since the magnet disc is larger there is another factor of magnification in speed that the magnets pass the coil based on the ratio of the diameters between the magnet disc and the driven gear. If the size of the magnet disc was increased with no other changes the speed of the magnets motion would increase too.

[@vincentv6009]

Is there a way to extrapolate the speed and volt increase from a 1m diameter wheel in comparison to the small wheel Robert is using?

[@maxkennedy5073]

@@vincentv6009 e=BLVx10^-8, where e = volts, B=magnetic flux lines/cm^2 (gauss) and V=velocity between conductor and magnet. V=𝝅D x RPM/60, where D = diameter, to give a velocity/second So if his is D=10cm and you want to go to 1m (100cm) as D is the only factor that changes everything else cancels out so it's D2/D1 = 100cm/10cm = 10x the original voltage theoretically. There will be some losses so you won't achieve that quite but it would be close. This is for 1 magnet passing 1 section of coil and for total energy output you would need to factor in having more sections of coil and more magnets as well.

[@CrudelyMade]

@@vincentv6009 the other thing to start considering at 1m diameter is how fast that wheel is going to be spinning (the outside of the wheel), and the kinds of forces involved there vs the material of the wheel. i.e. a dremel might spin a 1cm disc at 30K rpm, but a 1m disc at 30K rpm would disintegrate, if it were made from steel. with 3d filament, it'll fall apart a lot faster. if a 1m wheel was spinning at 1000 rpm, the outer edge would be travelling at around 20 meters per second. so if you're turning the crank at 100rpm, you get to 1000rpm on the wheel because of the gears, and now you have a wheel edge going over 40mph. just something to consider. ;-)

[@_..-.._..-.._]

Would this drive in metal need to be a wet gearbox aka: “oil bathed” for friction reduction? Or could a hard forged wheel be driven by a brass oilite or powdered metal pinion?

[@Dave_D.]

I'm having trouble visualizing how you attached the coil to the frame.

[@_..-.._..-.._]

Looks like he got the idea from a supercharger, not sure which, but it’s whipple or twin screw or positive displacement.

[@Vibe77Guy]

Actually very low ratio worm drives can be back driven. 5:1 is about the break over point.

[@inventanew]

do you have any videos showing how you learned to do all this in tinkercad, I teach engineering and it's always been a challenge to teach cad

[@BakamonNO]

that was really cool

[@silverpc4611]

Could you make a video on making these gears and how you match the big gear to the smaller in tinkercad.

[@mikedmann7487]

You Rock Robert! Good luck to yah Luke!

[@lorenbush8876]

That's nice. How many amps? I hope Luke does great in school, I'm sure he will if he takes something that he's really interested in.

[@msowdal]

Easy to sand cast, looks like a winner!

[@danieldougan8550]

Are you still working on that battery factory?

[@edwardcunningham6315]

Thank you. I gotta try that cool worm drive. I made a triple helical stator and noticed a large reduction in driving torque 👍. I'm going to use floating magnetic bearings to reduce more friction and this worm drive looks like a great addition. I wonder how hard it would be to print one 😁👍

[@_..-.._..-.._]

He says where you can get the files. Or do you mean difficult for it to turn out well without defects? You could probably print the gears meshed together in an enclosed gear box.

[@ruimartins7402]

That's really inspiring! 🤔 The extruded cam rides on the ridge only, leaving the trough free. If we adjust the shape it could be driven by water like an Archimedes screw in reverse using twisted cams, 2 would give you 24V Wish I had a tinker shop😂 Great videos, nice work 👏 thanks 😉

[@_..-.._..-.._]

Ideally, it would use most of the contact area to prevent slippage, I’m thinking Teflon coated gears (they’re rotors actually) would help just like in positive displacement supercharger, which this design draws inspiration from. Or have loose ball bearings between the drive surfaces, or even fill the transmission case with loose ball bearings

[@YahDude]

What for amps was it putting out?

[@dSquared0162]

Lovely... looks very 'natural' how the cogs/cam interact... seems like losses would be very minimal.

[@azlandpilotcar4450]

Nice demo. Looks like that even with a 3-d printed plastic part, there's very little runout. Might be good for machine tool drives.

[@Twistedmetal-qe8kx]

That's really interesting, never seen one of these before, excellent!

[@markgeurts258]

Wow that looks very good! Thanks you for the clear explaination Rob, now I do understand it..😅😀 Cheers!

[@tuberdave1]

Thanks for showing me something I haven’t seen before!😊

[@niklar55]

😊👍 Excellent! That worm drive, really _looks_ like a worm! .

[@jyvben1520]

so 2 would make it go 100x

[@armorhand3332]

Very cool! ....looking forward to seeing which turbine you go with to power that....

[@grendel1960a]

a worm gear can be reverse driven, but it takes a special set of circumstances for this to be true - if the coefficient of friction is less than the tangent of the lead angle, ie if you have a worm with a large tooth angle then it is possible with enough torque to back drive it, this is generally desirable if you are worm driving large and heavy components and dont want to have something break if the input stops suddenly, the friction and losses are enormous and brake the large heavy component quite quickly

[@koaasst]

i know my 96 to one worm gear plates for boat lifts aint gonna turn from the wheel aint no way in smuckers marmaduke even if you helped it edit ok i saw someone say around 5 to 1 is about the most, seem legit

[@ebb2421]

load...

[@craigglewis]

Has anyone printed this project and working on it? I just downloaded the files and will print it out over the next few days. I will order the Magnets, Bearings and Wire. Very cool and simple design Tks Rob

[@rickibaron4816]

Just a quick note: I don't know if you have seen the new OMNIFLOW ans SKEGNESS wind turbine designs. If not you might want to have a look.

[@gregorpamula8939]

I just docovered your channel. You seam like an amazing guy and I'm probably going to binge watch your videos 🙂 BTW you probably heard it many times, but I get a stron Anthony Hopkins vibe from you

[@wizrom3046]

Load forces on a 2 gear mechanism tend to push the gears apart. Rounded gears are probably the WORST design in terms of that problem. The good point; it gets 10:1 ratio from those size gears, (normal gears would give maybe 5 :1), and it's quiet The bad point; terrible gearmesh integrity under load, needs big bearings and supports to try and compensate Overall, it really is not that useful. Planetary beats it in so many ways.

[@justtinkering6713]

Okay, now you have me curious as to what software you used for the 3d animations. I want it , if I can afford it.

[@unicornadrian1358]

Rob uses TinkerCad for most of his 3D work. I think it is free.

[@justtinkering6713]

@@unicornadrian1358 I didn't know it could animate.

[@unicornadrian1358]

Animate is probably not the correct word but you can screen record as you move things around or move through different viewing angles. True animation would need a second free program.

[@justtinkering6713]

@@unicornadrian1358 aha thanks

[@Dave_D.]

Onshape (free online CAD) allows you to put your parts together and animate them.

[@quantumenergysolutions9128]

Very nice Mate! Can we rename it something like the spaghetti gear, or pasta twirl drive? 'Eccentric Cycloidal' is not very add friendly lol

[@shirishthakare9842]

Dear there r not much scientific temperament youtubers to breed problem solver generation. Thanks for ur efforts. Issue with u is u dont go and present in details. Pl be slow and explain the stuff in details. For example in this presentation. U cld explain how magic gears r different. And i saw coil type is different. Like zigzag instead of coils.

[@TURBOSLAYERPWNZ]

Simple gear you said. Looks kinda hard to manufacture without some CNC magic (if I would need it in metal).

[@Johnson_Rice]

I saw this other video where a guy did a magnetically driven bicycle... the gears lost energy to heat and slipped... LOL seeing this I really want to combine the magnetic cycloid gear from the last video... attach it this modified worm gear and see if it can withstand the stresses of propelling a bicycle... How cool would it be if you could just 3d Print the parts for a high functioning bicycle or ebike from the same parts used to build a device that charges it?

[@markrumrey790]

My thought is that this could actually be made usable if 3D printed from a nylon material like a timing gear in an ICE Motor and would have greater usable life. Just a thought.

[@ThomasMLOL]

Looks like you took the graphics at 1:35 straight from RoTechnic's video on the same topic..?

[@zfolwick]

oh my god PLEASE tie in another one! Replace the generator with another big gear and attach a small gear, and then have that drive another generator! Will you get 32 volts? or will you get 320 volts? Will the gear ratios multiply or will they add?

[@peterwiley4383]

Bloody awesome, Rob. Can’t wait to see how it does in a breeze. Might be the ticket.

[@ericwazhung]

I wonder if the serpentine coil would work even better if it was surrounded by a ring of metal? ...and bolts through the pegs

[@Gboyrides]

hey question, what size bar are you using for the Coggs because they're not 8 mm but the bearings size are so are you drilling them out to eight mill and using an eight mil bar or are using a smaller bar in the bearing if possible can you tweak the STL files to have an 8 mm hole in all of the gears?

[@leegosling]

Wind it a bit harder and Evel Knievel will shoot across the table and damage the skirting board… (sorry, showing my age there).

[@lindseyhatfield9017]

It's operation is far more "wormlike" than the worm gear, it is a very cool drive gear, thanks for showing this one !

[@jaredf6205]

Why haven’t I found this channel until now!? This is totally my kinda stuff.

[@chuckmoney1688]

Very clever.

[@fusion82]

1

[@gkshasser]

worm gear ? never heard this. here in germany is it "Schneckengewinde" it means "snail thread"🐌

[@charlesurrea1451]

Your meter doesn't have a min max? I'm quite annoyed that you never put a load on all these things that you test, you only look at voltage

[@darreneagle9860]

Nice idea, except it looks like youve just created a very expensive straight gear

[@serhiishynkaruk6752]

Nice. But it's better to wind stator in cycloid manner and make magnetic rotor..

[@isaaco5679]

Could this be applied to bicycles to increase efficiency?

[@joelsoncdma]

The serpentine coil lost a copper wire in one side...is best than conventional type the lost is in two side

[@kingcosworth2643]

You would need a hypoid oil for any decent load on those gears, there is a large sliding bearing surface on those gears

[@stuz32]

Subscribed :-), that was fun

[@marianvraciu9176]

Maybe an one way bearing added to the disk, will help to spin the disk longer.

[@nugrohosumanto6390]

Is it possible to change the big twisting gear into a water turbine (driven by water)?

[@TheSirrandal]

Please show these fantastic beasts under Load, as soon as you start drawing current the effort has to go up.

[@dahmanus2002]

Hello, I think that crank should have a one way ball bearing .

[@replikvltyoutube3727]

Would connecting 3 of those be spinnable?

[@allanfahrenhorst-jones6118]

Oh that's awesome. Almost flying.

[@ministerRichardIanofKerr]

Nicely made. I sure will get myself a nice 3D printer soon enough. In the mean time i'll have to continue recycling old discarded junk like fishing reels to get my rpm up.

[@hive_indicator318]

That's a great idea! Now I just need to convince my dad he doesn't need all 20 of his reels

[@jamesdaca9957]

Ya broke the camel's back, I'm all in now!

[@KavanOBrien]

We are getting very close now , we’ll actually you are getting very close to a system for green house heating, chimney heating and dare I say it a system to feed off my efforts when I do cycling on my indoor trainer, all obviously liked to small batteries or a series of batteries that will generate heat = wow looking forward to be warm this winter = wow plus two more wow’s.

[@grendel1960a]

pedalling the bike will also keep you warmer.

[@KavanOBrien]

@@grendel1960a Agreed but seems all that effort couldn’t be captured to a battery so it could be used while not on the trainer, 65 now so do about an hour a day,

[@scfcrob]

Are you sharing your progress anywhere online as I think there would be lots of interest

[@KavanOBrien]

@@scfcrob progress in regards to what ? My thoughts ? I’ve always thought differently , as an example they have these big power wall batteries for solar , why not have small batteries that could be powered by cycle trainer once charged fit back in to pack made up of individual units, why have a solar panel on the roof so it could not only capture the sun rays but could also capture the vibration of the rain hitting the panel = easy to put discs within the unit , Tesla now have solar tiles, why not have solar shutters on south facing windows and the wires go directly into the room charging a small battery within a heater , warm in winter cool if we get a summer, many have oil for their heating , why aren’t we having sand batteries , the list is endless , the temperature in the ground is a constant heat , dig a hole in your garden. Line the hole with aluminium fill it with sand , a mine wind turbine and I mean mini blow warm air into the house when needed , lots of things that could be done for people living in flats with balconies, as said list is endless.

[@jamesmatheson9624]

that gearbox ia garbage it has no torque

[@AliasnodeFP]

What does this do different from a basic 10 to 1 gear?

[@glencahalin4786]

Oooh now I'm thinking if it'd be possible to use the quieter eccentric cycloidal gears in your stackable planetary gearbox , such as in your 1964 video A DIY Wind Turbine Gearbox.

[@Innominate666]

It would make quite a nice orbital gear

[@RandyZimmerman-pp5wj]

I would like to see this mounted to a meter high vawt

[@anthonydavinci7985]

Great idea to utilize wind mill as driver but maybe you will use stirling engine ? Mirror driven ? Ect ?THANKS SO VERY MUCH !

[@jondoe598]

Brilliant it's just like a slice out of the archemidis screw imagine having 3 sets of magnets n coils all spinning same time it'd make 16vx3=48v? Volts you young and old geniuses out there make UK proud come up with a world 1st tinker and poodle along experiment and you never know your new generator could be a world class one and make you very rich in turn making more stuff with the money you get to make bigger n better things for your fellow brother's and sister's to live on FREE electricity etc come on man and make sure you patent all your stuff BEFORE showing it to anyone ok even a screw in a DIFFERENT place is incumbent of a patent ok get out there you young minds and old too and make us PROUD as I'll be the 1st to buy your stuff ok come on get experimenting and trying new things 😊

[@100roberthenry]

brilliant, always look forward to your vids and mad explorations.....

[@badejong]

This is getting better and better... 👍👍

[@robertwagner2079]

Please sir, make more... I am addicted.

[@wiktor1983]

Thank You Anthony Hopkins.

[@jamest.5001]

This is very interesting, making a silicone mold so a wax copy can be made, for a lost wax casting from aluminum, using a old cast car rim, should hold up fine for a wind turbine, especially id pkaced inside a case, with a bit of tacky lubrication, a bit of lucas oil stabilizer, mixed with automatic transmission fluid, About 10% Lucas to 90% ATF, should make a thin oil that sticks to the gear leaving a film. For excellent lubrication. It will work well for tge bearings also, just leave a scroll pattern on the gear, to pull lube up to the axel, using a hollow axel, with a hole leading to bearing, it can be self lubricating. The oil running off the large gear, running into the axel, then to the next bearing, running out the axel, into the bearing, possibly have a scroll wheel just to pick up oil, and feed tge axel. Use a coil of about 3mm copper tubing, soldered to a copper disc. Feeding a roughly 1-3mm i.d. of the tube. With a 1mm hole to lube the bearings , with this system straight ATF can be used, no lucas added, the system would basically have a pump oiling the gears and bearings.. Im going a bit off an a tangent here. However, i have had the idea for a hybrid manual transmission, using a pump like a automatic, and clutches like an automatic or motorcycle, still using gears, only use the clutches to engage the gears, the shift lever only opens a hydraulic valve engaging the clutch, without pressure, they automatically disengage. With no friction, using a spring to separate the clutches, More like a motorcycle clutch i guess, having 6-8 packs per transmission, plus a normal clutch, that could be replaced by a valve, that slowly engaged the clutches, a normal 4speed transmission would be long, or possibly large, about the same as a automatic transmission. It could be setup to wirk automatically, uts like replacing the syncronesh with a clutch pack, about 8 3.5"-4" clutch disc and steels, maybe a smaller diameter for reverse, with less disc, being Reverse doesn't require holding lots of power, using a hydraulic coupling in place of a clutch, making it more like a automatic. Keeping all the gears from creating drag on the main shafts nearly eliminating the losseshaving one clutch connecting tge input shaft to the output shaft. Should not requiremire than a few hp to drive , normal losses are 25j+ hp or better at full power, this system should be 2-5hp, usjng a carbon ceramic on titanium with slotted steels1.5mm thick with .5 mm slots tge ceramic material having carbin fiber reinforcing it, basically a carbon composite, using a ceramic material with carbon inside, like porcelain with carbon using carbon fiber to reinforce, using powdered graphine to make a light weiggt ceramic making the clutch new, about 2.5-3.2mm thick the 2.5mm steels. Possibly baking the mose efficient transmission. Us live to build a eorking example, with a single pneumatic actuated clutch on each gear, having reverse, and 2 forward gears. And a electric motor, with most of the parts 3D printed, probably usung a sheet metal disc with a piece of paper from a brown paper bag . As the friction material. With another 20 gauge sheet metal for the clutch, and 3mm plastic fir the pressure discs, with a wavy flat wire spring, to spread the pressure disc off the clutch. Use a 3D printed standat clutch with paper as the friction material and simple pressure plate, and a dimple printed air compressor, and hollow cylinders to prove it works, using a electric motor, for spinning the gears. A car company could use the same transmission, only configured different to be manual or automatic, or possibly a option to be both. It could save money, save fuel , and be fun to drive,

[@UsDiYoNa]

I think this man may be a literal genius.

[@risennation1239]

You're channel will grow with current world affairs. Sad way to be found, but amazing to listen to as an American. Thank you.

[@rollmeister]

No commutator brushes either.

[@MrDeothor]

looks like basic, simple... or.. straight gears would do just fine and it's form over substance

[@homesteadaquarius]

That is awesome!

[@orpheuscreativeco9236]

DANG! 😵‍💫🙌 That's impressive!!!

[@colrodrick8784]

Robert. Mate, you never cease to amaze me. I’m wondering where the venture capitalists are. Your blood, as my dear old Dad used to say, is worth bottling.

[@partciudgam8478]

16 volts... what did you get? Another great video And better content Mr Murray has gotten a great success! I am a fan for the videos to coooommeee!

[@makerbeelab5546]

that's actually how the majority of modern motors and generators are layed out. Nobody winds an individual winding, you simply lay a big coil into preexisting slots in the stator.

[@ThinkingandTinkering]

I hate to say this mate - but view a few more vids and you will find tons and tons of folks wind individual coils - I know what you mean - but it tends to be in automated processes where the method you are talking about predominates - so if you mean by modern - factory made in China then sure it is kind of made that way

[@luistrejo7249]

Nice example, I didn't know that those kind of gear transmission existed. Thanks for sharing.

[@Lakefish_HAXX]

Seeing these videos always gives me inspiration to think up various designs to push these sorts of designs further, but i don't ever manage to try to design things properly. I could go online and find software to help me i'm sure, but never set aside the time properly. One thing tends to leave me wondering in the meantime though: You show the Voltage of these sorts of designs, but not usually any amperage to work out the Wattage. For this design, what IS the amperage? Could this alone charge a phone over a day? If it were even on with no data transfer, would it lose charge overall - just with the hand crank?

[@frequencywatchers]

This Is CRAZY !