Re: [EVGRAY] Tesla Turbine Question

That's what I thought, hydrodynamic oil film but Norm is getting
aggressive about balls and needles, I guess they used both : )

https://www.power-eng.com/articles/print/volume-114/issue-2/departments/what-works/major-babbitt-bearing.html

On 4/9/2019 3:56 PM, [email protected] [EVGRAY] wrote:
>  
>
> Surprisingly enough many, including Parsons and Brown Boveri, used
> Babbitt bearings with a high pressure oil film.
>
>
> Ron
>
> ---In [email protected], <nwootan@...> wrote :
>
> Use your head man.  High speed steam turbines were being built at the
> same time using high speed roller and ball bearings that lasted many
> years. very reliable.
>
> On 4/9/2019 4:17 PM, Mick mkjekyll@... <mailto:mkjekyll@...> [EVGRAY]
> wrote:
>
>>      
>>
>>     Thank you Norm,
>>
>>     Great information as always!
>>
>>     Just wondered what Dr Tesla may have used for bearings back then
>>     before off the shelf silicon nitride and such.  Something
>>     spinning that fast would eat up bearings if they were not
>>     choice.  Perhaps they were ball as you allude rather than
>>     hydrodynamic fluid bearings.
>>
>>     I shall order your presentation.
>>
>>
>>     On 4/9/2019 1:31 PM, Norman Wootan nwootan@...
>>     <mailto:nwootan@...> [EVGRAY] wrote:
>>>      
>>>
>>>     https://en.m.wikipedia.org/wiki/Tesla_turbine
>>>
>>>     On 4/9/2019 3:28 PM, Norman Wootan wrote:
>>>>
>>>>     https://www.teslatech.info/ttstore/conftapes/teslatech/2016jul/ETC16Web.pdf
>>>>
>>>>     The basic principle behind the Tesla Turbine is the De Laval
>>>>     Nozzle for it converts the maximum amount of potential energy,
>>>>     Pressure/ Heat into Kinetic Energy with proper design and
>>>>     application. If you don't understand this principle, best you
>>>>     leave the turbine off your to-do list.
>>>>
>>>>     I explained all this in my 2016 Presentation at the Tesla
>>>>     Conference. You have to make your condensable vapor/gas
>>>>     transition to supersonic before impinging upon the runner disk
>>>>     pack and then go subsonic creating a shock wave that drives the
>>>>     boundary layer on the disk surface so you get the maximum bang
>>>>     for your buck.  99% of all experimenters do not understand
>>>>     this.  The driving media must be a condensable vapor so that
>>>>     you have a partial vaccum,  on the cool side and up to around
>>>>     120 PSI driving pressure on the hot side. See
>>>>
>>>>     https://en.m.wikipedia.org/wiki/Ball_bearing
>>>>     https://web.stanford.edu/~hydrobay/lookat/tt.html
>>>>     https://www.scribd.com/doc/82705538/Tesla-Turbine-Technicals
>>>>     https://auto.howstuffworks.com/tesla-turbine4.htm
>>>>
>>>>     On 4/9/2019 12:29 AM, Mick mkjekyll@... <mailto:mkjekyll@...>
>>>>     [EVGRAY] wrote:
>>>>>      
>>>>>
>>>>>     Norm,
>>>>>
>>>>>     Your work on the Tesla Turbine, where can I find the DVD
>>>>>     again, I would
>>>>>     like to buy one?
>>>>>
>>>>>     What did Tesla use for a bearing back then that could handle
>>>>>     the RPM?
>>>>>
>>>>>     I know you said he had Nozzles made by a company back then but
>>>>>     bearings
>>>>>     come into question.
>>>>>
>>>>>     Thanks,
>>>>>
>>>>>     Mick
>>>>>
>