Ferrofluid Piston

[Alastarr1]

Mmmmmmm, robot sexxxxxx

[aet08]

i have the weirdest boner right now

[codzomz]

well a real app. would not be possible or would be very hard to get this to work, because you would need to posses a magnet strong enough that the ferro fluid would maintain its shape during the compression cycle, also ferro fluid can ignite with a great enough heat application, so you would have to watch out for pre-ignition or combustion, also ignited air could escape into the crankcase which would cause some serious combustion issues, just too many variables to this theory, great idea tho:)

[kinstar]

soooo coool!

[Razorlol69]

wow, a "simple" machine is built xD

[23yobby]

hmmmm gives me an idea for a new sex toy BRB!

[xolan007]

This is the principe of the stirling engine, right?

[xfollador]

interesante

[zhadooom]

pure PORN!

[shaytan1313]

could you tell me how much compression a piston ov that size is capable ov producing without breaking the ferro seal? i assume you used a neodymium magnet as that would probably be a main factor (magnetic stregnth) but i was just curious as to the pressures that can be obtained before the ferrofluid weakens.. do they manufacture diffrent fluids with diffrent iron concentrations?

[manf1234]

@shaytan1313 The limit of pressure for the construction shown here was 200 HPa (0.2 atm). You can extend it with smaller clearance (also with multistage and with condensed fluid). With a very small clearance in the end the pressure is not limited by the magnetic effect.

[TheLarioz]

Is that  a YoYo?

[kaiotie1]

did anyone see the size of the test tube with the balls in it?! lol

[arnoldaszlt]

awesome!!

[leukybear]

What's the name of the song that starts at 1:14?

[bushna2007]

Kind of reminds me of my honeymoon night!!!

[Rotorzilla]

wow that is one the coolest stirling engines I have seen

[99F]

World's Greatest Sex Toy

[specallez]

Brilliant! Could you tell me if you used a particular kind of ferrofluid ? You said "light oil", is there a particular one I should buy ? Also, what was the clearance between the magnet and the cylinder ?I'm going to try this in a an engine, thanks for sharing!

[manf1234]

@specallez All normal commercial ferrofluid will fit. The clearence in this case was about 1mm, or a little more. Smaller values are better for more compression. Keep the oil away from hot engine parts.

[Glitchmaster1504]

Nice vid! It's not free energy but extremely low cost, requiring a candle replacement very once in awhile. Very smart design though!:)

[HybridWaterMan2]

What a creative use of ferrofluid! I would not have thought to use it as a low friction seal like this. Nice!

[bobobano]

Awesome idea man. 

[perazaroberto2]

you are number one



[puflio1]

owsome bravo

[neoferatus]

Its so hot!

[manf1234]

@transfusablepng I am not aware how much the oil companies do to stop this information but the candle companies still provide this form of energy, - anyway, everyone who has free candles can make free energy out of them.

[efahrenholz1]

@transfusablepng I hope you do not consider this video an example of free energy, because it is actually wasteful energy.

[AliasUndercover]

That's lovely.

[FLYBOY7777777]

Oh yeah, super scientific penis pump

[emergence999]

FERROFLUID CONDOMS!!!.... er i mean this is pretty awesome stuff :P

[Dwsurman]

Wow thats a real clever idea very cool video

[super6plx]

wow that's a great idea! ferrofluids.. never thought of using them as a sealant

[Damstraight68]

HAHAHA it looks like a sex machine.. hehe

[catatatater]

POKEYMON MUZICS.

[Chronocide2000]

oh god... my ears... what the fuck was that atrocious music?

[bitesizesean1]

great idea ! surprised it hasnt caught on !

[WoWjacker]

someone must have been bored :D

[kaiserwilhelm]

also known as the dick sucking machine.

[chunk1978]

very cool!

[ChuckRoveg]

Finally!! a solution to provide robots with an effective way of having robot sex!

[Musicmaddnes]

Haha lol that is funny.

[blasius50]

Complimenti Bravissimo enen gruss

[superkindonmymind]

goodbye pistion rings

[MDragonFang]

perpetuem mobile, much?

[gordo4444]

Nope, it has an incoming energy source. The candle.

[MDragonFang]

oh, didn't notice it, thanks.

[gordo4444]

Yup, I thought the same thing when i first saw it. Had to rewatch it a few times...

[johncar11]

Annoying music, but that's damned cool.

[foozbong]

Very nice.

[CraziestOzzy]

only for relative low pressure...worth looking into high pressure application. five stars

[bilos1993]

Yes, but it leaves kerosene (or ther types of oil) on the cylinder... Very nice Stirling motor application though! 5 stars!

[kubikop]

Nice one, I put my sterling engine on hold because I could not think of a good piston. How much was your ferrofluid? or did you make it out of a toner cartridge powder?

[RRED2]

I did enjoy science at school and I like to mention I enjoyed watching your usage of ferrofluid it always amazes me how this product is used Always Dynamic

:0)

[pali52]

Thank You the idea, I tried ferrofluid with some machines You see in videos. 100 % seal, no friction. Please advice, how can I use in high pressure.

[manf1234]

Yes, I have seen your engines with pleasure.

A narrow gap and a multiple seal increases the available pressure.

It depends on what pressure you need. It might not be much more than one atmosphere in the end.

[pic16F88]

any one tried this with an thermoacoustic engine ?? Would love to see some video of it !!!

[macrumpton]

One big advantage is the the fit and surface of the parts can be extremely rough yet still give a high quality seal. is the ferrofluid just iron particles in oil?

[FrikkieMeyer2008]

Note that this fluid is not being submitted to any form of heat, thus it should work for normal sealing applications, however any form of severe pressure or heat will perish it.

[manf1234]

Yes, one advantage of the stirling motor is that the flexible seal can be introduced at the not so hot side. In FDBs ferrofluid works at temperatures up to 90°C. High pressure will not be kept by the seal, it will be released, at least without distruction.

[hintzofcolorconcepts]

all you need for a stronger seal is more magnets and more fluid

[bebopit88]

This machine seems to be a perpetuum mobile... : )

[kabuuc]

Small candle is heating the round ending of larger tube.

[bebopit88]

oh, yes, i didnt notice. here's the trick! thanks! ;)

[tedoo1]

lol robot lube

[roidroid]

lol, techno-abba

[lithiumdeuteride]

Clever idea, but you'd need a prohibitively powerful magnet to seal against even 0.1 atmospheres of differential pressure. I don't think this will displaces O-rings any time soon.

[manf1234]

From the data it is different, but you are right, it is not meant to replace O-rings.

[pikachuthesquirtle]

nice

[30GB]

very big.....

[kamalmichael]

good stuff

[leptir99]

1:10 - 1:18 has funny motions....

[TheNilvarg]

Why do you say "shall" so much? Kind of pretentious.

[SWINGREGORY]

great idea !

[AVAMagneticlev]

Great to see an application like this and I think it can be developed into something useful.

[Reverseflush]

This addresses phenomena at macro, micro and nano levels plus it reminds me of sex.

[electrique527]

Good idea :)

How about damping / friction of the fluid?

Richard

[manf1234]

There there are other magnetorheological fluids with micrometer-sized magnetic particles that increase their viscosity in a magnetic field. In this application Ferrofluid with low viscosity is used.

[fullmetalfunk]

Wow..only one sex related coment. Maybe we are advancing as a civilization.

[csizmarikg]

Very clear and clever presentation!

Congratulation! 5*

[beblie99]

You can buy static ferrofluid vacuum seals in the 30-50 Psi range. They use mutiple FF rings, each stage with a 1-2 psi differential.

[beblie99]

I thought ferrofluid seals were a great idea for about a week. They face two limitations. The pressure is limited to about 2 psi. Engines typically run at 150-200 psi inside the cylinders. Secondly, at high temperatures, the ferrofluids lose their magnetic properties

[manf1234]

Yes, that is true, for internal combustion machines it will not work. The temperature is limited to those of the magnets, about 100°C, and the limit of pressure for the construction shown here was 200 HPa (0.2 atm).

But the pressure should at least be extenable to 1000 HPa (1 atm), lets find out how.

[hazah99]

This should be a supercheap way to harness solar power. Much less than photovoltaics.

[cyborgtroy]

Yeah the efficient, high-power Stirlings usually run at a few hundred PSI. I guess this isn't practical, then.

[rguerzo]

Hey guys! If you put ferrofluids on two separate magnets, each on the same poles, then face each other, will the two ferrofluids repel each other? Please let me know and video it. Thanks!

[psychopathicclown]

thats pretty fuckin nifty

but i think i seen something similar on a porn once

[ItsaUFOduh]

wow that was extremely clever, I assume someone must have patented this right!?

[SWINGREGORY]

great idea for stirling motors

best regards

[mowerofdoom]

Thanks for posting this. I have wondered whether this is possible before but now I know! I am interested in the self centering ability as this could potentially replace accurate machining of bearing faces and seals. Free piston stirling engines are what I have in mind .......

Kind regards, Geoff.

[manf1234]

Thank you for the comment, you also have very interesting films on Stirling motors.

I am sure more complex arrangements with magnetic fluid are possible for guiding and sealing moving parts, mainly those with moderate temperature and pressure.

This one was just a quick setup for demonstration.

[dbzdanny]

deeper baby

[somsof62]

cool, i love those stirling motors ;-)

[twinsquirrel02]

Fantastic! great practical application

[BRAIDERMAN]

Wow - Very clever ! This might have some good applications. Thanks manf1234.