Re: Another improved propeller gap

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "bob by way of Terry Fritz <teslalist-at-qwest-dot-net>" <yubba-at-clara-dot-net>

hi terry,Steve

kevlar blankets are used on tractor pulling rigs to catch the clutch as it 
disintegrates under the strain of 4000 hp of Russian helicopter turbines 
going at 50000 rpm. so should be good for a small rotary gap. if you use a 
metal enclosure you will have to pour the bits out, at least the kevlar 
might  leave something to examine afterwards.

cheers
bob

At 15:47 31/01/03 -0700, you wrote:
>Original poster: "Terry Fritz" <teslalist-at-qwest-dot-net>
>
>Just a note:
>
>McMaster Carr sells Kevlar fabric pretty cheap and easy.
>
>http://www.mcmaster-dot-com/param/asp/desc.asp?desc=Fabric%20Kevlar&descid=12055
>
>That may be a nice nonconductive light weight shield.  I have never tried 
>or worked with Kevlar, but it may be a cool thing to use for parts flying 
>off high speed gaps.
>
>Cheers,
>
>         Terry
>
>
>At 10:01 PM 1/31/2003 +0000, you wrote:
>>Hi guys
>>
>>I recently finished building the rotor for my ASRG. Due to a bunch of 
>>different reasons I decided to go with a small rotor that spun very fast. 
>>The finished item was about 3.5" in diameter and runs at least 12000 rpm. 
>>I was inspired by the propeller gap that Terry Blake made, so my design 
>>also has prong-like electrodes sticking out of a hub. Unlike the 
>>original, though, the electrodes are bolted in place. I put some pictures 
>>online, at
>>
>>http://homepages.strath.ac.uk/~cnbp111/tcpropeller.html
>>
>>if anyone is interested. I balanced it as well as I could and it's 
>>getting tested tomorrow. My plan is to stick it inside a steel pot, hide 
>>under the workbench, crank the motor up to 240 volts, and see if anything 
>>gives.
>>
>>Steve C.
>
>