From: firstname.lastname@example.org (George Goble)
Subject: Re: cheap freon source
Date: 29 May 1998 15:22:51 GMT
In article <email@example.com>,
Joe Bays <firstname.lastname@example.org> wrote:
>In article <email@example.com>, firstname.lastname@example.org (Doug
>> email@example.com (Tony Pelliccio) wrote:
>> I've wondered, with today's rare-earth super magnets, if a sealless
>> external drive compressor could be built, where the compressor is
>> driven through a permanently sealed partition by magnetically coupled
>> rotors. In a car system, the external drive rotor could even be
>> electromagnetic, to perform the clutch action as well.
>Absolutely yes. Mag drive systems have been commercialized for large
>pumps. The magnets do take up some space. Alternatively, electric
>compressors could be used (like a refrigerator) with a big ol' alternator
>to drive it. Then if they quit using those stupid Ford O-rings, you'd
>have a leakproof system.
>my e-mail address is jnbays at tricon dot net
mag drive is a good idea, but the desired "goal" of most automakers
is to force "service" at 3.5 years.. I have heard that Ford
engineers (Connersville, IN, where the compressors are built) that
they are designed (spring lock connectors) to lose 1/2 charge by
3.5 to 4 years, so they can get service money. Everytime over
the RR tracks.. "psst psst".
mag drive eliminates the 2nd alternator. I have a pump with
magdrive, but it is wimpy compared to a 2-3 ton compressor
used in auto A/C. These magnets would need quite a grip to
transmit 4-5 HP without touching anything.