Added: 3 years ago
From: GREENPOWERSCIENCE
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  • The big issue with using CDs is that by putting any holes or notches, you wreck the balance and structural strength of the CDs. To correctly make the Tesla Turbine, you have to:

    1) drill exhaust holes near the center

    2) fix all the disks to a center hub to harness the rotating energy

    Both will make it necessary to modify the disks. If it spins at a few thousand RPM, they will explode. For this reason, I recommend using old HD platters. They are VERY strong, balanced and keep a mirrored finish.

  • The primary mode of momentum transfer for a tesla turbine is laminar adhesion, not impingement on the spacers.

  • @GREENPOWERSCIENCE Would double sided media have the same ridge on both sides and create a gap without having to place the discs back to back?

  • The problem with this idea is that when the two ring spacers are placed together, you BLOCK THE FLOW OF FLUID COMPLETELY so it cannot exit out the center. Nice try, but nope.

  • Oh Dan... I have taken off all my clothes and I am waiting for Jesus, do you want to join me?

  • bla-bla-bla-bla-bla-bla ....

  • dude.. Wat s the diameter f the disk??

  • Why didnt you just made the turbine man!

  • I've got a few questions:

    Is it necesary to glue the disks that are back to back?

    Isn't it necesary that all disks are fixed together so they all spin at the same time?

    Thanks

  • Another excellent demonstration project

  • im still trying to figure it out, so yeah im an idiot, but how would you make the exhaust if u wanted to make a pump out of this? would it be better to make holes in the axle or the disks themselves?

  • @triggerhappyfreak Most do the disks, this allow for a larger opening.

  • @GREENPOWERSCIENCE alright. will you be making a video to show how? i want to make one to pump air out of. thx

  • @GREENPOWERSCIENCE thanks. this vid was a great help. do you think you will be doing another one in the future?

  • I was just getting ready to recycle my old macs... now I'm excited to take them apart! If I actually build a Tesla turbine, I'll post a vid response. Inspired! :) Thanks for sharing these vids.

  • Dan? could you repeat everything again, i thoughts were on the nice looking girl in the photo above your monitor......

  • Works for me. Please let me know if you are still having problems.

  • Hmm...Didn't MrfixitRick already show how to do this?

  • MrRick has a great channel. He uses magnets as spacers. This is a bit different.

    Dan

  • If you place the DVD's together the way that is shown in the video, how will the fluid exit through to the center shaft? There really is no way the fluid can get through to the center shaft since the raised plastic spacer is blocking the way, especially if you adhere the DVD's together with glue. Maybe if you cut channels in the spacer it would work.

  • You think thick edges are going to help? Seems pretty straight forward to me, but I will defer to your obvious expertise...

  • the edges have nothing to do with the way this thing works. tesla turbines work from the adhesion of the fluid to the smooth disk surface and the viscosity allows the layer of fluid the is sticking to the surface to be pulled by the moving fluid... has nothing to do with edges

  • I was just pointing out to someone else that whatever you use for spacers is not as deleterious to the flow as the square edges. Most real tesla turbines (i.e. not homemade ones cobbled together from hard drives or CDs) have very sharp edges to reduce boundary disturbance at the entrance and promote laminar flow. A turbine made from CDs will still work, it just won't be any more efficient or useful than a vane turbine.

    P.S: Please don't tell me I don't know what I'm talking about unless you do.

  • the square edges dont matter if the fluid is properly guided into the system.

    do you really feel that i dont know what im talking about? or were you saying that i didnt know what you were talking about? cuz i do know what we are both saying.

  • It's offensive to be told I don't know what I'm talking about by someone who hasn't even taken the time to explain their point or supply evidence. That is the essence of "flaming" and it's really counter-productive.

    As for the edges, I'll refer you to the schematics online which clearly show tapered perimeters.

  • but if the fluid is introduced to the disks beyond the edges, then the edges dont matter. which is the way it should be done even with sharp edges.

  • How do you introduce the fluid "beyond the edges"? It has to get between the disks somehow.

  • my god! u are on all YT: D

  • I am so with you on this one.  Their banter is halarious. It could be a comedy routine....lol

  • Points scored for correcting those people missusing the name to make their projects sound cooler than they are...

    Now about interupting your horizontal windmill video with spinart... :P

  • The edges are too thick!!! Whatever you might use for spacers isn't going to be nearly as disruptive as those square edges.

  • why do you would want to build this turbine > ? :)

  • general interest in the subject?

  • Comment removed

  • Dan, let us know when your Tesla project is done. thank you

  • Dan,

    I started a Turbine project following your instructions to use that tiny natural spacers on the disks. First I glued each pair of disks together. Then, I welded the pairs applying epoxi resin on the internal space created when we put the recordable faces against each other. I noticed that the depth of those spacers may vary from disk to disk. It is a very small difference, but it makes it tricky to mount all the disks with the same distance between each other.

    Best regards,

    Daniel.

  • Hi Daniel,

    Post a video when you are done:-) You can do a video response.

    Thank you for the comment.

    Dan

  • without magnets, cds will just spin. no use?.

  • They use magnets so that it can be utilized in many many various ways. You can wrap copper wire around it to generate electricity, etc.

  • Why not just use thin washers in the middle rather than the outside, just like washers are usually used? that is around the axis.

  • dude you forgot that the ridges you are using to hold up each cd/dvd would inturn block what ever you try to run through it ...

  • Nice to see someone with an eye for details.

  • that was good science lets see it work!

  • wat are u doing btw?

  • Ok!

    you say that is better to run the turbine using air, compressed air, but the energy used to compress air usually is not considered in a experiment.

    I say that using a water column you create a sustentable source of energy.

    The manometry is a tecnology thats can be teached for anyone.

  • how is the air or whatever going to spiral out down to the center when there are 2 rings cutting the flow

  • wow. G

  • Do you still have it? Bet it sounded beautiful.

  • I built one of these with 3 ports at the centre contained in a 7 disc case (built in shaft) and ran it on compressed air.

    My engineering friend said I was nuts and that it wouldn't work. He stated that the air would just travel through the gaps and out of the ports doing nothing.

    I wished I'd had a camera when I spun it up, his jaw just droppd to the floor :))

  • yeahhhh! thats the way to be. prove them wrong,good job you stil got it, you should put a video of it moving.

  • Right On! I tried this idea, and it will definitely work, as you have demonstrated. Some discs have the ridge on both sides, some on one side.

    Can't wait for next installment!

  • Thank you Mr Rick,

    Keep you cool videos rolling. Great stuff.

  • Hi Rick

    Nice to see a kitchen sink scientist here instead of the armchair ones!

  • Hahaha good one! I like that term Kitchen Sink Scientist; has a nice ring to it!

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