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Electrics DCC getting you started - Electrics - DCC - Getting You Started. - Your Model Railway Club
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 Posted: Mon Oct 9th, 2017 05:38 am
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Passed Driver
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Hi All.  According to the instructions from Hornby , when one converts the A1x to DCC, the orange capacitor has to remain in the circuit. As I understand it, the capacitor is surplus to requirements, as the Decoder takes over that job. Best wishes.  Kevin



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 Posted: Mon Oct 9th, 2017 05:48 am
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MaxSouthOz
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Absolutely almost correct, Kevin.

The capacitors are dinosaurs from the days when DC model trains created interference on your valve radios and TV's.  They serve no useful purpose today.  In fact they are reputed to cause problems for decoders.

I always snip off the capacitors, strip the loco down to motor and pick up wires and begin hard wiring from there.

Cheers



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 Posted: Mon Oct 9th, 2017 06:07 am
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Hi Max.  Thank you for your reply. It is surprising that an established company like Hornby are so far behind the times.The pick up wires that you mentioned have an odd arrangement in Hornby Locos to say the least.
Best wishes. Kevin



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 Posted: Mon Oct 9th, 2017 09:56 pm
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SRman
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I agree with Max ... wot 'e sed!!  :cool:

The Hornby instruction is probably on legal grounds - they have to maintain any radio suppression for the locomotive to comply electrically and electronically with the regulations. However, the decoder, which has to be hard-wired into a Terrier, does all of this anyway.

Hornby tend to have the capacitor wired directly to the brushes, and the track wires feeding into the legs of the capacitor much closer to the 'head'. Since you have to wire the orange and grey wires to the brushes in any case, it doesn't matter if you snip or unsolder the capacitor legs from the brushes; it has to be done anyway.



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 Posted: Tue Oct 10th, 2017 06:15 am
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Hi Jeff  Thank you for your reply.. when you say “ Directly to the brushes” I have noticed that the motor sits on two contacts from the running rails ( I believe these have to be insulated with Kapton Tape)Best wishes. Kevin



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 Posted: Sun Jun 27th, 2021 10:45 pm
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I have read on many forums, if the loco runs as expected after fitting a decoder. leave the capacitors in, otherwise remove them.



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 Posted: Mon Jun 28th, 2021 07:24 am
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Hi Ron.  Thank you for your reply. It is something I have read, but, also I cannot remember the exact details my previous modifications or wether it had removed them without Faffing about when I have more important work on my Inglenook Junction which is overdue.   Best wishes Kevin 



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 Posted: Mon Jun 28th, 2021 01:18 pm
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Hi Jeff and Max.  I will get rid of them, but, I ain’t got a Telly, Ha Ha Ha.  Best wishes Kevin 



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 Posted: Thu Nov 11th, 2021 07:26 pm
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The illustrated installation guide on the Bromsgrove Models site (http://www.bromsgrovemodels.co.uk/hornbyclassa1xdccinstr.htm) suggests that the capacitor should be removed by desoldering.



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John Russell
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 Posted: Thu Nov 11th, 2021 08:02 pm
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Barchester
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Hi John good to see you posting  :thumbs my first stop for DCC installation instructions ! 
Can you just check that link ? I'm getting a 404 error ( might be me though ! :hmm

Cheers

Matt



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 Posted: Fri Nov 12th, 2021 06:23 pm
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Petermac
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Yes, me too.  :hmm

Any particular reason for desoldering the cap John ?  I usually just snip mine off with wire snippers......... :roll:



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 Posted: Sun Nov 14th, 2021 12:25 pm
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BromsMods wrote: The illustrated installation guide on the Bromsgrove Models site (http://www.bromsgrovemodels.co.uk/hornbyclassa1xdccinstr.htm) suggests that the capacitor should be removed by desoldering.
Hi John. Thank you for your reply. But, I couldn’t find this. Best wishes Kevin 



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 Posted: Sun Nov 14th, 2021 01:33 pm
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Barchester
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Took a quick look myself, didn't have time to find the actual page John posted but here is the Homepage for DCC fitting guides


http://www.bromsgrovemodels.co.uk/decoderinstallation4mm.htm


Very useful  :thumbs

Cheers

Matt



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 Posted: Sun Jan 9th, 2022 12:47 pm
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Apologies but the Bromsgrove Models site has been taken down, as from December 2021.  The TCS UK site is still active but stock is gradually being run down as sales gradually revert to retail outlets (Digitrains, Coastal DCC and DCC Train Automation at the moment). TCS UK product sales can be accessed from uk.tcsdcc.com.



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John Russell
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 Posted: Sun Jan 9th, 2022 12:59 pm
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Sol
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That is pity John, as your site has so much DCC info.



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Ron
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 Posted: Sun Jan 9th, 2022 01:42 pm
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Yes, I agree Sol - that's a pity John.  So much very useful information on there.

As the saying goes, all good things come to an end ..........



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 Posted: Sun Jan 9th, 2022 09:19 pm
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TeaselBay
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I think it’s interesting they still include that a model may cause interference on a TV set in the instructions. It also is required to receive interference as well… never understood that part of the warning…



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