[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Rotary gap safety - RE: spark gap muffler?
Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Mddeming-at-aol-dot-com>
In a message dated 5/25/01 5:49:24 PM Eastern Daylight Time, tesla-at-pupman-dot-com
> Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net>
> Hi Chris, and Gregory,
> I saw a video once of one of Greg Leyh's big rotary gaps coming apart at an
> SRL show. The parts breaking away (a bearing got a primary arc and
> suddenly welded solid I think) hit that shield like a ton of bricks!!
> Heavy steel plate, well bolted down, not only to control parts but to
> literally control an "explosion" is needed! If the rotor comes off, or
> worse, cracks away so it suddenly becomes super unbalanced, you will have a
> monster on your hands really fast!!
> I looked at:
> but they don't have a video of it up. It was pretty cool!!
> This is obviously a much larger concern for a publicly demonstrated coil
> with an audience filled with lawyers... A daily inspection probably with a
> check sheet is a good idea to insure consistent safety. Small low RPM
> rotors are far more tame but I always position the rotor so I am not in the
> plane of the disk incase something flies off and I usually have Shields
> unless I am fiddling with them :-))
Hi Terry, Chris, et al!
Here is a quick table of how fast things are thrown from the edge of a disk
running at 3600 RPM. As you can see, things get real nasty, real quick.
(in.) velocity (mph)