Tesla's dynamic balancing machine @diy @tesla
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- เผยแพร่เมื่อ 4 ส.ค. 2022
- balancing the Tesla turbine is a necessary thing to get it to operate safely , this is been done whit Tesla's own idea whit hanging the turbine on flexible bearing hubs en drive it up to speed, a Water jar is used to indicate when it hits a vibration point en this is observed by the rotor hitting the grinding wheel,. More updates to come
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it's freaking awesome
That's getting up to speed nicely 😉
I really like the water for monitoring the vibration. Well done!
Thanks nice you liked it 😊 it's was just to make I visible for the video 👍 I already known when it's happening because you can see that as a certain point it hits the grinding wheel en under or above it don't en this point keeps changing, the roto end plates ar a little warped in stand still en that get into shape above 1800rpm before that it stil wobbles a bit
Yeah the water is a very smart idea!
It seems that not each resonant point is equal, as Tesla mentions using only the odd sub-multiples of the critical speed when your shaft is supported, like yours, in two bearings.
From what I understand, you'd be grinding off the light side on the even sub-multiples of the critical speed, thus making the imbalance worse.
Something to think about :-)
@@Waveguide yahh it's really interesting Stuff 👍 little as I know it worked fairly well by just observations of what happens 😅 about this theory en stuff I just wanted to make it visible for the video 🤓 what I found is that if you find the resonant point wherever it is it swings out of the center en if you grind it down a new resonant point is created en grind that down to en so on until almost no vibration is present , Charlie Solis had a fairly advanced explanation posted in your video about what to do en what not, there is so much to learn 😁 the point is to get the thing balanced so we can get a reseneble power output whitout self destruction 😉
@@oscarverwey Yeah Charlie had some very interesting comments, not sure why he removed them.
Also, are you Dutch? I am. Perhaps we could meet up at some point so I can check out your machine! :-)
Alright I'm not sure either way he removed it , in mi experience TH-cam just delete some comments for no obvious reason probably because they look like spam this happens when there is a link or a email address in the command 🤓, about being Dutch yas I obviously I am XD I would like to meet you , the thing is I'm living in Greece for 2 years now 😅 en im not Very often in the Netherlands I lived in Haarlem next to Amsterdam, of you like we can talk a little more , here is my email address so if you like we can chat sometimes ( oscarverwey@gmail.com)
Nice job Oscar. Don’t let these guys who clearly have no idea how the balancing apparatus works tell you how to do it. Lol I’ll bet you another candy bar that next week they will be claiming that even though you showed it first they came up with this water trick a day/week just before you posted about it. 😂
Thanks for the compliment man that means a lot 😁 I hope thay will mention mi if they're gonna Use the water cymatic trick, it wil be of great Help to my small channel!
I didn't came up anything, the rotor balanced itself when I cranked up the rpm when the grinding wheel was near en played around a little bit, en for the video I added the water jar ( about the diameter of the radius of the rotor so the cymatic patterns can be seen better) so i didn't came up whit the water trick! Maybe I used it at first in the Tesla turbine balancing machine, the Egyptians dit ! way way back in time, at least to that's the first record of it I read about it 👍
it's so nice that your turbine is so well built that you don't need to balance it out of necessity great Job on your CNC machine
@@oscarverwey ohhh no I need to balance this one now that i have those off the shelf hex shaft locking collars. She’s got a nasty vibration now. But it shouldn’t be hard to do away with it.
@@CharlieSolis Yahh that may be so , but still the rest is wel made right 😉 maybe you can drill a little bit in the heavy side of the hex shaft locking rings
@@oscarverwey I think I just got it balanced! 😈😈😈 this new balancing apparatus setup that I have is killer.
love this and the rest of your stuff too good. thanks for sharing
Awsome
Would a lathe not work for this?
Or does it need to be at speed specifically for the resonant points?
A lathe wil not work I think 😅 First because most can't get to such high speed,
Second, Tesla stated that the bearing hubs need to be flexiblely connected so the heavy Parts of the disc swings Out en creates a different center of mass so if it does this you can see it hits the grinding wheel it wil happen more at the resonant point indicated by the water ontop en you can see it grind only the heavy Parts away, at least that's understand of it
Ofcorse I could be wrong 😅
O right instead of relying on precision tooling, you let the part swing the unstable spot out into the tool. No limits to fine tuning.
Y'know, this Tesla kid was a smart one lol
@@azafreak yahhh excecly Just let it vibrate it self I to the grinder so the heavy spot's reduce it self, genius Idea from Tesla 🤓
I think you can use a lathe and leave one end free to vibrate but you would have to have one that could handle the speed. The method that stopped Tesla from getting a US patent uses a lathe.
As long as you are removing weight from the heavy spots when in resonance then it will work.
Tesla had rotors specifically with a cantilever setup. Some of the photos are online. I have some technical drawings and photos.
So really the only way to balance these rotors would be to use a lathe type setup.
@@nikola.tesla.r.and.d.centre never the less ot worked fairly well 😁 whit one end free you wil run into problems I think I don't know for sure, I just found out about the theory of critical speed s en Stuff after I was successful in balancing mi rotor 😅 Tesla stated in the patant that both bearing hubs should be free to move a bit in the simplest form of this balancing apparatus right?
I would confirm that your first resonant spot is where you are removing the heavy side from before you do anything else.
If you have then removed weight from the second resonant point then was that also removing from the heavy spot?
As really the next odd submultiple of 3,400rpm should be 10,200rpm.
Alright wil check it out 👍 although I don't plan to go over 7k rpm on this one because the spacing is really small (0,5 mm discs en 0,5mm star washers) hot exhaust gases mixed whit steam is gonna be used for powering it , also the variable nozzel can be adjusted so that if you blow in it I could make it go faster on a certain point ( 2 Blow's males ot go from 840 to 895 rpm )
@@oscarverwey I would confirm the first subharmonic is heavy spot and do all your balancing at 3,400rpm then.
Interested to calculate what the critical works out to be for your rotor / shaft setup.
I’ll have mine balanced this week so looking forward to showing that to everyone.
I’ve got to remove about 7 grams off the heavy spots so it’s taking a while to do it neatly.
It’s funny I had about 10mm of wobble and I static balanced it with 7 grams of blue-tac and got that down to 1mm deflection.
Once you get the balance very good the rotor will gyroscopically lock onto the axis of rotation and things like using the casing as the z axis control become possible.
Some rotors thrust more than others. Some don’t thrust at all.
Did you get many burrs from the grinding? I’m thinking that’s what the sand blaster method from the patent might be used for.
Perhaps a fine balance and removing the burrs in the process.
@@nikola.tesla.r.and.d.centre no not at all only a little Sharp edge which I removed slightly whit a little file turning at about 200rpm, I don't see a useful purpose for a sand blaster, Can you elaborate on that?