In this video I'm making a 5 vane rotor air (pneumatic) motor. This type of motor is used in a variety of air tools seen every day, nothing uncommon. While this may not be very exciting, I found that this is actually a positive displacement pump. That means, it can be a perfectly working miniature supercharger. This type of supercharging was applied decades ago in actual engines and worked very reliably. In my case though I'll need to change the materials of the vanes and the housing for better sealing and reliability. Any suggestions are welcome :)
My 5-Axis Desktop Milling Machine: pocketnc.com/collections/v2-10
►Subscribe! bit.ly/2m1d1y7
►Instagram: johnnyq_90
►Support my videos!: www.patreon.com/johnnyq90
Excuse me. But your design is completely wrong. The rotor should be in the intake/exhaust side. Nice construction. Poor design
Here's your easy supercharger! Please read this iv used smog pumps before great positive displacement blower.. a vane pump is all they are
@JohnnyQ90 so iv given it some thought how about chopping down a air pencil or grinder? Their certainly cheap enough to play with and well you can certainly machine it down for the volume you want. And there already good to turn at high speeds most use delrin seals so no issues there and aluminum for the rest. The nice ones iv noticed use bronze for the rotor.
I didn't make this just for fun haha.. It's the simplest superchargers of all. Only issue is the materials of the housing and vanes...
Get you some nice sticky oil (not grease its too thick) and it will have more torque.
👍🏼👍🏼👍🏼
Its not about rpm. Its more important that it can have sealed chamber and produce enough torque. If not even a turbine or turbo fan will do
Make that supercharger, please!
grate piece and work, but you should put the inlet in the narrow part and displace it in the direction of rotation that you want to turn, and the outlet in the with part it woud have more torque and be more efficient.
O::: lets gooo
That'd be an awesome water pump. You could put the shaft into a dremel or drill and run an intake hose into some water and have a hose on the output and probably pump some serious water with that little thing. Awesome build!!!!
Imagine making a model wankel engine supercharged by the pneumatic equivalent of a wankel engine... Nice, Vanes and Apex seals, what else could you wish
You should do a supercharger
I grew up with wind powered tools and they are commonly available, it's old science. To make a miniature just buy a cheap tool, copy and downsize it.
In your experience which one is the best for air motor? Tesla turbine or Vane or piston? Thx for the video. :)
ingineer asmr Best watching before sleep
Nice build, only one mistake :your shaft is offset to the wrong side, the place on the bottom should be the biggest so that the volume decreases again at the exhaust, this way you will be able to use it as a pump as well
Do you have a web site where you buy your bits, and boring bars from?
I think a roots blower/compressor might be easier to do, tolerances aren't as tight as this design or a normal supercharger, there's in principle only two moving parts (which are geared together 1:1 = fairly easy).
This thing would be the coolest supercharger ever
So it does nothing!
do you run carbide tooling or hss?
Cool
You know far more than, but looking at the shaft its getting air on the right and spinning counter clockwise right? If so wouldn't it make it more efficient to angle the intake pipe 90*? Asking not saying you shoulda done it this way
Quite the desktop you got there to fit that on there
OMG i love this channel
Vc pode fazer um V4 16valvolas??
Before you change anything, I recommend doing a pump characterization. All you need is a flow meter, a manometer or other pressure gauge, some sort of adjustable flow restriction (valve), and a way to drive the pump. This will give you the information you need to size one properly for whatever engine you want to attach it to. Basically, if you know how much air your engine pulls at a certain RPM, then you can size your pump to give the desired boost at that flow rate.
I love the part when he say « in other way, a supercharger » 😂😂😂
wish i had a pocket nc
Please turbine the v4 engine
Teach me please!!! You’re amazingly talented, like triple Beyoncé talent. 😁
The videos are very good but I would say they lack music
and I love your tools.
I like your videos very much.
hi johnny, a'm nicolas, from argentina, you know what you can make a hidraulic pump using the air motor, but you must use the springs.
hello where i can find a ESC starter and battery please
YAAYY SUPERCHARGED ROTARY VIDEO COMING ...........
большая вибрация будет
the ole pocket nc not sounding so good lol. got oil bud?
Hey hiiiiii......can u make screw air compressor's tiny airend?
i saw your 4 cylinder engine video and it is awesome so next could you maybe make a V10 or a V12
He doesn't make the motors, a company called Toyan makes them
oh my goog
That was a awesome video thanks
If you just using it as a vane rotor no need to offset the vanes. Centered up is fine. Prolly get a lot more rpms as the air is not trying to compress. If you want to make super charger. You will want it to compress air. Offset towards outlet so it takes big volume of air and compresses it then dumps into outlet.
judson superchargers, used in old vw bug had the same design concept noworld.info/video/video/0XbOq7if05vNz5Y.html
sounds like Marge Simpson
👍👍👍👍
You should hook up the supercharger to the rc 4 stroke engine and put it on a rc car
I wish you would run air from a scuba tank through it ...3000 psi
I think you meant to say it's a turbo charger. Superchargers are belt driven. It is still really cool. You did a good job.
i immediately thought of a supercharger
“2RD prototype”? Would that be somewhere between the 2nd and 3rd?😂
2rd = turd
yesn't
You should try to replicate a LiquidPiston engine.. It's like an inverted rotary. If you used a carburetor it shouldn't be too hard to make it functional. There's even a HowItsMade on it.
oh god, ur Channel Explodet, u had like 70k subs 10 minutes ago. lol
Make the cover clear, would look sick
Hope one day you make an airplane rc with your turbines
Very nice video. Thank you sir.
I would have made the cover out or acrylic just for style points
8:35 - Formula One V10 starting up.
You'll get about 2-3 psi at most (probably at or around 10000rpm) out of that design.
the rotor vane was made of Polyvinyl Chloride or in the common tongue, plastic.
my dude, you need to use this for your mini V4 engine
If your inlet and outlet are both on top of the housing then the rotor should also be above the centreline of the housing so that the air can travel around the rotor and the most work can be extracted. If like your build the rotor is below the centreline the air basically short circuits and travels above the rotor instead of around it.
Hvac vacuum pumps use a similar concept, i think
In other words *ITS A SUPERCHARGER*
Put that as a supercharger to the v4 or put the i2 on an other car and put it in that
This is the same principle as the compressor for the air horns I had on my car.
Now make it run on fuel.
The design principle is used in pumps for power steering on cars, springs are not needed as the centrifugal forces are doing best.
Hummm I thought that's what you were making.... Thought it was a small vain pump for fuel or something like that... My bad LoL 😜
noworld.info/video/video/r2WVf9aEmrDcwqM.html The nice thing is you can reverse them, enabling them to move fluid either way.
Good work brother, congratilations
Try this Johnny. On the intake side, and on the cover plate, machine a channel from the high pressure side to the center of the white plastic rotor. Inside the rotor, machine a channel that gets fed high pressure air from the intake to the back of the vanes to help push them outwards. That way even if the first or second vane dont seal properly, pressure differential around the circumference will push the other vanes outwards, as their outside is receiving less pressure then the inside of the rotor. That way you wont need springs but they will still get pushed out. This also means that at low loads, the friction is reduced due to the nearly equal pressure at the back and front of the vanes but as load increases, the air pressure pushes them harder against the outside helping them seal. You have also put the hole for the shaft at the wrong spot, it should be at the top with the rotor blocking air flow from high to low, only allowing the vanes to act under air pressure. The way it is now, the air can only act across the 1-2 cm at the top, which is also why its stalling as your air pressure is pushing a single vane down, allowing air to pass straight through.
9:37 Plot twist
more speed!
So if this is gonna be a super charger on a high rpm engine......shouldnt it be better to make the seals out of steel like in rotary engines? Also id say you need some oil too, that plastic wont last long at high rpms and high loads without some lubrication. Delrin (POM) is cool and all but its no magic material, otherwise they would make the wankel seals out of POM. I usually se POM gears used in cheap electronics, say inkjet printers and other cheap devices, none of which is high speed/high temperature.
Why did you use polyethylene?
Whoa
@5:15 - Why not just hold the saw and run the object aroun slowly?
Making a supercharger is worth the time and money for your channal
He metion supercharger
You should make a mini rotary engine😆🤙
I think you should attempt to build a scale engine! I see them all over NOworld and have great interest just no tools I’d need for it.
HOW in the world are the fins held captive @ 2:18?? I can't see any way that keeps them from flying out from the force of the spring. I cant see anything from the view at 8:02 either. I think this is a small question with a difficult to explain in text answer. I would greatly appreciate if someone took the time to explain this to me.
The vacuum pump of my astra g 1.7 dti is very similar to that.
A SUPERCHARGER!!! YESSS!
🔝👽👽👽👽🔝👽
Fyi, there are also en.wikipedia.org/wiki/Liquid-ring_pump liquid ring vane pumps. The will have a minimum operating speed before the liquid ring can support the vacuum/pressure, but it's a simple and low-wear design.
Another way to get rid of the springs is to blead air/oil from the high pressure side to the inside face of the vanes. This will blow them out. I didn't see any secondary finishing of the housing, you'll be able to reduce wear a lot if you finish sand all the wear surfaces. (SWAG, 600 grit with some machining marks still showing to hold oil) Another improvement would be to switch from full-round blade tips to a circular section with a larger radius. This will increase the force that the oil film on the blade tip can support. Matching the width of the rotor to the housing is important for efficiency. I think the easiest way to do this is to assemble the rotor, vanes, and housing then sand the whole assembly to the same height. If you're melting the blade tips, I'd get some bearing-grade Torlon. It has a far higher melting point than Delrin and bit better hot strength than PEEK.
Next time try to use the springs from an old lock
👍
now do one without the air being forced to take anywhere from a 90 to a 135 degree turn on 2 occasions on its journey through the pump. You can drastically reduce the total exposed port area (and thus the amount of time the rotor spends with length unsupported by the inner face) AND reduce the angle of directional change required just by making the ports perpendicular to the inner face. You can also manufacture the rotors out of PTFE to reduce friction further.
make it a water pump next please.
Jonny walker quarter plus 90 😁😁
Very cooll i love this but those retractable blades increasing friction at higher rpms that's why it isn't going at very high rpms like every pnumatic rotor does thanyou have a good day
Your NC machine sounds awful. Please check your guiderails for any runout and lube them up
very similar to a power steering pump
I waiting for mini supercharger Rotary
Saudades desses tipos de vídeo no seu canal.
The thing sounds like marge Simpson
I wonder, why didn't you do the axle a bit longer, and instead put the rear bearing in the cap instead? With a load bearing component on each side of the vane wheel, I think it would run much "cleaner" with a higher RPM.
Put 90psi to that thing