Subject:
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Re: Train Depot DCC Update
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Newsgroups:
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lugnet.trains
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Date:
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Mon, 15 Mar 1999 16:50:14 GMT
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Reply-To:
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lpien@*nomorespam*IWANTNOSPAM.ctp.com
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Viewed:
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942 times
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I am sure it has a purpose and unless you know what it is you won't know
whether it's safe to leave out or not. Manufacturing nowadays doesn't
typically put stuff in that's not needed, need to save those pennies.
My guesses:
capacitator (but if this is in series between the motor input and the
contact, no way... current would not flow)
Fusible link
Matthew Bates wrote:
> I have a question though. Inside the LEGO motor unit is a tiny disc between
> the one terminal of the electric motor and the metal contact stip (i.e. in
> series). It is about 1/4" diameter and 1/32" thick, made of some black
> substance with silvery foil on each side. What is its purpose? It doesn't
> appear to have any resistance.
>
> The reason I ask is I had to remove it to install the DCC decoder, keeping it
> would be way too hard. It doesn't appear to make any difference.
>
> Matt
--
Larry Pieniazek http://my.voyager.net/lar
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Message has 2 Replies:
 | | Re: Train Depot DCC Update
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| (...) Unless it's just for FCC in which case can rip it out ;) (...) I measured its resistance, it has none. So it's no capacitor. (...) Could be, although it's hard to see how. A conductor with 1/4" diameter could carry a few hundred amps! But (...) (25 years ago, 15-Mar-99, to lugnet.trains)
| | | Re: Train Depot DCC Update
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| (...) Larry Pieniazek responded: (...) OK, here's my guess. It's a polymer thermal resistive protection device. Put it in circuit, and turn up the power...basically, no resistance. Now, with the power up, try to stop the wheels. This would increase (...) (25 years ago, 15-Mar-99, to lugnet.trains)
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Message is in Reply To:
| | Train Depot DCC Update
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| I have made some progress with TDDCC and have successfully installed an MRC ADC330 N-scale decoder inside a LEGO motor. (URL) under projects (sorry no pics yet) I have a question though. Inside the LEGO motor unit is a tiny disc between the one (...) (25 years ago, 15-Mar-99, to lugnet.trains)
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