We make soft polyurethane pistons - will the engine start?
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- čas přidán 15. 12. 2023
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I want to see you guys make some concrete/asphalt pistons.
super heavy concrete pistons will auto destroy in the testing fase 😂 😅
no
Yes that would be hilarious.
👋🤣👍
The last thing we should be doing is giving nutty ideas to a bunch of crazy, drunk Russians.
When you cut open the mold, the cut lines should be jagged to create a key this ensures that each side of the one-piece mold lines up and this reduces the parting line in your casting.
Not to jagged or you end up with a hazard.
@@jwalster9412 ...a hazard? Is something missing in translation?
@@secondarycontainment4727 I was being sarcastic about it having "sharp" edges.
@@jwalster9412 LOL, ok my moldy old brain isn't that sharp anymore. ZING!
Guess that's also the reasoning behind fractured rods. Always ensures a perfect fit.
They need to get some large very dense solid rocks and machine them into pistons next. You know people tumble rocks to make them smooth, we need pistons out of some. 😅
That would be cool
What a brilliant idea I'd like to see that also.
Russian mechanics are something else...
These guys are engineers!
@@grandmaster1004dark star delta
Communism makes you resourceful by default.
Mechanics in general are something else.
Sergei is the best mechanic
Love your stuff! Always great to see the questions being answered. And BMI Russian for translating these answers. A very iconic duo indeed!
No one would have EVER thought THIS one would fail ... LOLOL Good effort guys . :)
A new meaning to soft start!
I love the piston videos. Make some out of polished marble next😂
That would probably work... probably bullet proof glass would probably work as well.
Hhmm...great ideas, always learning something. I wonder if y'all have thought about making JB Weld Pistons, there is also a liquid metal BELZONA, Which I think would outperform JBweld
I was just about to comment this..! Original formula JB Weld has high heat resistance and would have the best chance as far as epoxy pistons are concerned.
Edit: Actually theres a JB Weld called ExtremeHeat that might work even better
I’m wondering if they’ve tried a solid fiberglass piston yet? Heat resistant and strong. Not to mention very light material..
If you're going to use resin, wouldn't it be better to use carbon fiber cloth?
Ceramic pistons?
@@citizenzero6140I think the main difference would be the price. But another thing is layers, with carbon fiber it's way thinner and gets very expensive if you want it to not burn through immediately. With fiberglass if it burns through, just take a new one for a reasonable price with thicker walls and it should work better
may aswell throw Asbestos in to the ring too
except the resin butns
Obviously you should have painted the crowns in high-temp exhaust paint :)
I knew that would happen before I clicked on the video, but it was amusing to see. Hey Vlad, I have an interesting idea for you, have you heard of the opposed piston engine? I think you could make one up out of all the engines you have access to. Love your channel!
I think you should have made the pistons from high temp silicone but with an aluminium plate incorporated into the piston top to take the brunt of the heat and pressure considerine silicone is softer.
My thoughts exactly. I’ve been thinking of a piston that is assembled instead of cast.
Maybe coat the top with ceramic as a thermal barrier.
Concrete pistons next! Or maybe glass
Borosilicate probably work fine if the tolerances are tight everywhere and there's no slapping/knocking between the piston and cylinder/pin
Concrete sounds interesting
I think he tried that in a previous video
He sure does come up with some wild ideas keep them coming
Just wondering, have you guys tried ceramic pistons?
I dont think thats possible
@@gabrielv.4358 All the more reason to try it and find out.
interesting
@@gabrielv.4358why wouldnt it, the shock of the combustion would break them?
@@sneez9461so long as you don't have pre ignition or detonation id like to say it could handle a normal flame front
This actually gives some valuable information for piston design in that we now know where they will get hottest so we know the part of the piston that needs to be the most heat resistant.
umm its been known for 200 years a piston gets hottest around the...you guessed it...hot exhaust side
@@ct1762 There is a difference between hypothetical understanding and physical results. Here we can see the exact position that gets the hottest and with that information use it to make adaptations to the compound in that specific place to come up with a workable solution.
@@Shannon-Smith Introducing a more temperature resistant compound in that area would likely be significantly more difficult to produce and lead to it being more expensive, making the piston entirely out of the more thermally resistant compound would likely be cheaper. Maybe making the piston thicker in that area could be achieved with some sort of counter balance, I just don't think it would be worth it.
@@lilpisser124 I was thinking more like melting a copper piece in that top spot - heating it up with a soldering iron and pushing it in. But that might just not be possible either. Still, it's a really interesting train of thought.
Vlad, as an inventor, youre one hell of a mechanic!
My go to for round engine mounts for decades was to fill them up with urethane. My friend made the same steps with polyurethane, and as far as I can tell, his are still working15 years later.
Interesting. Where do you get the urethane?
@@andyc8454 Any place that installs windshields should be able to supply you.
When you think there's nothing else they can do
Love how you think out of the box. How about ceramic or concrete pistons? I bet they both work. Be sure they weigh the same! Have a great Christmas!
I suggested cement ones two days ago. So I win 😂.
I was thinking adding a metal powder. Metal should help heat absorption/dissipation. A ceramic powder should also increase wear resistance. Fiber Reinforced Plastics have better dimensional properties too.
Cement would never seal, it has the same issue wood does, but worse.
I think with some help by using rubber rings and sealant of some sort to prevent gasses burning the rings away it could work a bit, maybe more than these?
I love how you come up with these ideas. Try ceramic pistons ( like ceramic tiles ) have a great Christmas guys look forward to next video😀
Love you guys! Thanks for your videos!
you guys are just fun. Thanks for all your great crazy presentations. Never stop
I'm not sure what you can source for an acceptable price, but they make high-temperature polyurethanes that handle 300C. It still wouldn't survive for long, but it might run longer than these. I would also turn the top ring gaps towards the intake side during assembly as the leaks should be slightly cooler there.
will you be putting them in the see through engine
Wouldn't appear that way.........
I had my doubts, thinking the polyurethane would melt, but hey it worked 👍👍👍👍👍👍
This channel is freaking amazing
Awesome See-trough Pistons!
Imagine using candle wax pistons
There is a product called" Devcon" that I have used to repair A/C condensors, Alternators etc { it may have another name in Russia } but I think it would make pistons that would last a long time. I think it would be worth a try
loving your unbridled enthusiasm
try these in lawn mower lawn mowers are 1:6 or 1:7 depending on how it is most car engines are 1:9 to 1:12
you guys are my favorite channel!
Your delivery is just great. If you found someone to write some comedy for you I think you would be great at stand up.
You guys are really top bananas in this banana world!
Add a metal cap to the poly piston. And use a pressure pot when casting the piston to prevent the bubbles.
Other material to TRY...
Titanium - Reasonably light like aluminium, but almost 3 times the melting point (and higher than the block itself)
Tungsten - Heavy as hell, but you'll melt the block LONG before the piston
Glass (ceramic)
Instead of casting them in a mould, I'd try billet (machine them from a big forged lump)
One big downside is that you might not be able to do the usual 'test to destruction' as they might outlast ORIGINAL Aluminium pistons!
Cool try. Melted pistons? Plastic and heat don't mix. I want to see the pistons🤔👍
Material suggestions: graphite, ceramic
A few suggestions: Ceramic Pistons? Try that They might break under preignition but worth a shot. Urethane for windshield as suspension urethane.
You say you tried wood? I vaguely remember my dad telling me about Packards using oak pistons with leather rings. That was fifty years ago, but for some reason it still comes to mind. Wood has some incredible properties and so does leather. I know that old pumps used leather seals and they needed to be oiled to expand and hold the compression. I could be wrong about the oak pistons, but hey.. if you have time to play…
This worked a lot better than I thought it would
After pouring degassed urethane you can leave this for curing under pressure. This makes any bubbles smaller
Вы можете попробовать отрезать поршень от верхней части верхнего компрессионного кольца и прикрепить его к стальной крышке. Возможно, это остановит прогорание и позволит теплу рассеиваться более эффективно.
Кроме того, каков был вес полипропиленовых и литых поршней?
Love this channel
Instead of spark plugs use wicks like a candke..keep having to light them each combustion stroke..lol😅
How about poly with something like graphite or ceramic powder mixed in. Maybe both? Or a mix of different things to combat different variables.
I would internally reinforce it with something, and perhaps coat it with something as well. The coating needs to be hard, durable, and able to withstand high temperatures. And also able to actually adhere properly to the polyurethane underneath...
Oh, and definitely do a thorough check for any cracks and gouges...
Cerakote. But likely wouldn't bond correctly
Awesome video, 👍
Maybe with a copper, brass, tin, lead or so crown/head that holds the piston rings it might work.
I was surprised it even started! let alone run for about 7 seconds!
Prediction prior to start, failure mode will be wrist pin mounting. The large acceleration forces present on the bottom of the piston at the wrist pin will cause a crack, followed by the piston shattering. Also, after the first start and fail: The piston ring lands are very thin, and the possibility the rings will just shift or come off the piston completely is quite high. Waiting to see the tear down.
Material simply melted because of combustion temps and pressure, nice. I wanted to say that, but I figured I should be optimistic lol.
Material properties strongly drop off with increasing temperature
It will be done before the pistons get past 60 degC
Watching you guys all the way from Australia 🇦🇺. love your work nothing else like it on CZcams.
How about casted porcelain? ... with some metal inserts to hold pin and piston rings.
this idea would be nice: a polyurethane piston, a see through engine block and a crankshaft out of copper... and alu valves.. THEN bring it to run!!!!!!!!!! or something in this idea to make it happen LOL nice greets from germany :D
It would be interesting to cast pistons from resin.
Carbon Kevlar might stand a chance. Or potentially reinforce resin using a insulating material like kaowool or rock wool
CERAMIC PISTONS WOULD BE A INTERESTING.
Make some titanium pistons and have the longest running lada engine in history 😄👍
Upside down motor runs and drives..can be rear or front wheel drive. ✌️
Should have vacuumed the parts in the mold. It's full of bubbles. Plus 80 is low on the hardness. This could work with some refinement.
You should try delrin as a piston should work almost the same stuff as Polly but way harder
My first thought was you should've put the molds into the vacuum chamber as well because you reintroduced air into the mixture.
Interesting test…..I would try to mold a metal top on the poly pistons or some sort of fireproof coating….also use a sleeve in the wrist pin piston bore…
I was thinking the silicone from the mold is a good heat resistant material they couldve tried using as a liner on top of the poly for stiffness but idk if it's too soft to reach proper compression without too much deformation
@@TheMonstered1 that’s what I meant ….some sort of thin layer of metal of heat resistant coating to protect the top of the piston
Make pistons out of pure gold!
An idea for you guys...
There is a thing going round about ..
5 STROKE...
The lads engine would be a great canidit for it as the 2 middle piston are used as take off from the exshaust from the other 2 pistons...
Look it up
5 STROKE engine
Tungsten Pistons? I mean it is a long shot but it woukd be interesting. Atleast in opinion as Tungsten is used as filament for old school bulbs i think. It can survive lotsa heat i think if I'm right about it being used as filaments although i think it is also most heavy.
Use it for bottom but use metal on crown two piece pistons or carbonfiber or carbon kevlar skirts connecting rods thick forged
You have invented Single-use-pistons.For a trip to the store 500m away only 15 pistons changes are needed.
I wonder if you can get it running longer by gluing/mechanically securing a flat steel plate on top.
Stock lada engine. Stock crank, massive connecting rods. Some sort stupidly strong piston, and a lot of boost would be very interesting.
Lada engines aren’t that durable tbh. They are simple, but that doesn’t mean durable
@@goclunker I was wonder that, but it would be interesting if they could build a torque monster on the cheap.
@@slomo1010 what you were thinking of is a Fiat twin cam. This lump of crap barely makes 70 hp.
What about delrin? It's a hard plastic. Maybe you guys can revisit this with a protective coating on top?
These guys are so cool.
Be sure to extract the air bubbles with a vacuum chamber, but maybe JB weld can hold up?
U must paint the piston with something like oil or Vaseline before u add the silicone because is easily to remove the brads piston from silicone template
well its time to try something else like molded epoxy ceramic pistons if that is possible. anyway interesting video as always and fun.
Now you need to try high-temp plastic, 3D printed pistons.
Might actually work
No it wont
@@SW-qr8qe I agree. I'd just like to see how long it would last, if at all.
Try and make pistons out of steel stick epoxy, idk if you guys have that product in Russia but it’s a very strong epoxy here in America that dries hard as steel!! Hope to see it in a video good luck!! I think JB weld makes it
I do like the idea okay one thing you probably didn't think of liquid metal as the top of the piston head which can be transparent too which would make it as strong a steal so then put it into the transparent engine block you have think about it now you got a lot lighter and it won't break as easier
You should replace the engine oil with valve grinding compound, or some sort of liquid sandpaper
Try Kevlar fibre and aramid fiber composite pistons must resist Higher temps upto 800°F and It's 5x to 6x stronger than steel and weights lighter than steel . Normal passenger vehicles Pistons reaches Max temps upto 590°F at center of piston Crown .
Im in Western Australia, and I can smell that engine from here :D
YOU GUYS SHOULD RUN ENGINE FLUSH AS OIL AND SEE HOW GOOD IT CLEANS
Bmw furiously taking notes for their soon to come fully plastic engine
@garage54 can you try casting cement pistons? Or glass top pistons?
Here's a neat idea... put aluminum powder in the polyurethane... or use magnesium if you want it to be exciting!
Make a set out of devcon two part epoxy. That stuff when it cures you can drill and tap it to thread bolts in it. That or try jb weld
Two part liquid JB Weld. You'd just have to figure out how to inject it into the mold before it starts curing.
Please can you male a video about the best way to break engine after rebuild
Piston engines were not efficient until the cast iron was replaced with an alloy that was stronger AND lighter.
Try glass reinforced plastic 'GRP'.
Perhaps Teflon pistons are worth trying. Very heat tolerant and slippery - but would have to be machined, not cast.
The starter is a BEAST LOL.
pour it in a vacuum chamber to suck all the air bubbles out of the mixture, and it will make it harder, compress if you will
This guy is the definition of built different 😂
Hey guys huge fan of the channel love the wild experiments
New idea
Using a chainsaw engine and or a lawnmower engine
2stroke vs 4 stroke and a belt how many alternators can it run? Connect each one to a battery and see if it will charge at the right voltage!?!? Also how many things can you plug into it!?!?
My guess it it will work for maybe a few minutes.. Now I will watch and find out. I think heat and friction on the pistons will cause the rods to disconnect.
That would have happened too if the engine had run for long enough.
Try making pistons out of a high strength 2 part epoxy like JB Weld.
If you do these again, you need to evacuate the air bubles in an vacuum chamber. You could easily see all the air bubbles in the plastic.This is probably why cylinder 1 burned through.