Dave;
Amen, bro!
Regards, Neil Tucson, AZ
--------------------------------------------------
From: "Dave Dahlgren" <dahlgren536@comcast.net>
Sent: Thursday, January 19, 2012 11:22 AM
To: <drmayf@mayfco.com>; <land-speed@autox.team.net>
Subject: Re: [Land-speed] IN Car Communications
> Unsealed electronics never designed to run in the environment installed
> sloppy along with lousy amateur wiring practices take care of 99.99999 I
> have had zero wiring failures from 1991 to 2007 on wiring I did unless the
> end user 'worked on it' and have not been there since. You need to think
> in aircraft quality work due to the chemically corrosive environment.
> Above all no exposed bare copper or steel and die electric grease is your
> best start then move on to fully sealed connectors and heat shrink boots
> that are sealed with glue after that think a covering like Raychem DR-25
> then all electronics sealed with either o-rings or fully potted with
> proper materials. There is zero science involved other than an installer
> just not following proper harnessing practices.
> Dave
> ----- Original Message -----
> From: "Larry Mayfield" <drmayf@mayfco.com>
> To: <land-speed@autox.team.net>
> Sent: Thursday, January 19, 2012 11:37 AM
> Subject: Re: [Land-speed] IN Car Communications
>
>
>>I have not been in the land speed activity very long, but a recurring
>> theme does seem evident. And that is electrical stuff seems to
>> malfunction or misbehave when out on the salt.
>>
>> So, perhaps a side lobe to the communication question can be explored:
>> "What the heck is going on?"
>>
>> I am sure theories and hypotheses abound, but is there evidence of
>> actuality? I.e., data? I know I have some thoughts but no real
>> theories or even a hypothesis that can be fully explored. I can make
>> some assumptions, however. Like he salt is damp and salty damp stuff is
>> electrically conductive. That electrics, whether radio, Dc or ac,
>> generate electromagnetic fields. That a moving electric or magnetic
>> field with a conductor generates amps in the conductor in this case,
>> the salt pan. Weak, for sure, but then radio signals are not very
>> bright either. So, could the lack of good communication be attributed to
>> the fields generated by a moving electromagnetic field over a conductive
>> sheet of damp salt? And would the current generated mimic the shape of
>> the communication signal to the point where interference occurs? How to
>> easily test? Or how to shield?
>>
>> smart guys, here is your chance to step right up and make a lasting
>> contribution to the field of moving radio communications on a wet salt
>> pan. If it matters, lol...
>>
>> mayf
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