[rollei_list] Re: Rollei Tropical Models
- From: Jerry Lehrer <jerryleh@xxxxxxxxxxx>
- To: rollei_list@xxxxxxxxxxxxx
- Date: Wed, 06 Jul 2005 13:38:28 -0700
Richard,
People have gotten off at a tangent on what constitutes a
"Tropical Camera".
I'm sure that you, of all people know what the traditional
meaning of a Tropical Camera is. It does not involve
spraying the 'innards' with a varnish or lacquer!
Please acknowledge that fact.
I have a sneaking suspicion that that appellation applied
to the Art Deco Rolleis. But I could be wrong , (he lied).
Jerry
Richard Knoppow wrote:
> ----- Original Message -----
> From: "Don Williams" <dwilli10@xxxxxxxxxx>
> To: <rollei_list@xxxxxxxxxxxxx>
> Sent: Wednesday, July 06, 2005 1:16 AM
> Subject: [rollei_list] Re: Rollei Tropical Models
>
> At 12:51 AM 7/6/2005, you wrote:
> >Hello Richard
> >in the world of radio (I'm radioam.) we speak of
> >tropical model when a varnish recover the intern
> >parts of the device. I had a few years earlier
> >an old BC??? receiver from the US army you could
> >put it in water. There were perhaps a few models of Rollei
> >prepared so.
> >Claude
>
> There were a lot of WWII radios which were
> varnish or shellac coated and could be cleaned
> with water in shipyard repair shops without
> damaging the electronics. I was surprised when
> I first saw that done in Long Beach Naval
> Shipyard in 1955, when we went in for an
> overhaul. I was electronics officer and followed
> the overhaul on a daily basis.
>
> The radios I'm speaking of used vacuum tubes, and
> of course would not be able to operate under
> water. They could probably have been cleaned
> just about as well with a vacuum cleaner or air
> hose, but water was the norm then.
>
> I have the feeling that such a treatment would
> freeze all the moving parts together, and if not,
> would surely affect the timing of shutters, etc.
>
> >Accédez au courrier électronique de La Poste :
> >www.laposte.net ;
> >3615 LAPOSTENET (0,34 /mn) ; tél : 08 92 68 13 50 (0,34/mn)
>
> Don Williams
> La Jolla, CA
>
> In another life, when I worked for Hewlett-Packard, we
> commonly washed instruments sent in for repair. The shop had
> a wash rack and an electric oven operated at about 150F.
> Cerain parts, like meters, were removed, otherwise
> everything was washed with a paint spray gun shooting water
> with dishwashing detergent in it. Most instruments would dry
> out in 48 hours in the oven. There were no coatings in any
> of these things.
> The one thing that often did not survive were
> hermetically sealed transformers. Very often they developed
> small leaks at the seals which allowed some moisture in but
> didn't let it out again despite the baking. Long ago and far
> away all this was, the HP of today shares virtually nothing
> beyond the name with the company I worked for.
>
> ---
> Richard Knoppow
> Los Angeles, CA, USA
> dickburk@xxxxxxxxxxxxx
>
> ---
> Rollei List
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