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Re: (meteorobs) Dewing problems.
Thanks, you've told me what I needed to know. There are products I know
that are like that, resistive wire used to keep pipes from freezing is one
example. As I think about it, I have seen aircraft mechanics use the
stainless steel lock wire used to secure bolts and nuts as a hot wire to cut
plastic. It isn't insulated, but at lower temperatures some heat shrink
tubing would work. I need to do something like this, as the lens was
fogging up within a couple of minutes of being cleared.
Ron
----- Original Message -----
From: Timo Leponiemi <fmbb@sci.fi>
To: <meteorobs@atmob.org>
Sent: Wednesday, August 15, 2001 5:44 AM
Subject: Re: (meteorobs) Dewing problems.
> I think this is a normal resistant cable ... ask for Your local electrical
> store ... If I remember correctly, the resistance was 10,4 ohms per metre.
> You can test the cable: Use the 12 volts and take a part of the cable. If
> the cable is too short, the heat is too high! You don't have to cut the
> cable, but the power in the end of the cable and somewhere else in the
cable
> (keep the distance longer at first - the heat does not come too high. Then
> take a shorter distance ...). If the heat is too high, when You have the
> resistance cable inside the leather, you get the smell of leather!!
> Sorry, I can not explain it better!
> Timo Leponiemi
> Hyvinkää
> Finland
> -----Original Message-----
> From: R&L Thompson <rlthompson@thezonedot net>
> To: meteorobs@atmob.org <meteorobs@atmob.org>
> Date: 15. elokuuta 2001 23:12
> Subject: Re: (meteorobs) Dewing problems.
>
>
> >Thanks for the suggestion,
> >
> > Do you have a source of supply, or a trade name, for the cable?
> >
> > Ron
> >
> >----- Original Message -----
> >From: Timo Leponiemi <fmbb@sci.fi>
> >To: <meteorobs@atmob.org>
> >Sent: Wednesday, August 15, 2001 3:22 AM
> >Subject: Re: (meteorobs) Dewing problems.
> >
> >
> >> I use a thin (about 40 cm long) resistant (about 10 ohms per meter)
cable
> >> combined to normal wire cable sewed inside a leather and use 12 V
> >batteries.
> >> This will keep lenses dry and warm. I have recently bought 7Ah
batteries,
> >> which should last well the whole night.
> >> Timo Leponiemi
> >> Hyvinkää, Finland
> >> -----Original Message-----
> >> From: R&L Thompson <rlthompson@thezonedot net>
> >> To: meteorobs@atmob.org <meteorobs@atmob.org>
> >> Date: 15. elokuuta 2001 2:11
> >> Subject: Re: (meteorobs) Dewing problems.
> >>
> >
> >
> >To stop getting email from the 'meteorobs' list, use the Web form at:
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> >
>
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