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Author Topic: Whats DCC Comptible actually mean? Just bought a Farish 371-931A  (Read 350 times)

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Offline GlosGreaves

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Whats DCC Comptible actually mean? Just bought a Farish 371-931A
« on: February 19, 2020, 05:10:53 PM »
Hi,

I have just bought a 2nd hand Farish 371-931A which I understand is DCC Compatible.

But what exactly does that mean?

Does sit mean there are 4 points where I can solder a chip directly onto? Or does it need a lot more work?

Unfortunately it did (not) come with instructions and I have a very small Gaugemaster DCC22 ready to wire into it.

Any help very much appreciated!

Thanks

Darren
« Last Edit: February 19, 2020, 05:41:08 PM by Railwaygun »

Online njee20

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Re: Whats DCC Comptible actually mean? Just bought a Farish 371-931A
« Reply #1 on: February 19, 2020, 05:23:05 PM »
At worst it should mean there are places on the PCB to solder to, yes.

Have you looked at the PCB? The diesels with solder tabs are fairly obvious.

Online ntpntpntp

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Re: Whats DCC Comptible actually mean? Just bought a Farish 371-931A
« Reply #2 on: February 19, 2020, 05:50:32 PM »
Yes, I would take "DCC Compatible" to mean the motor is isolated from the chassis and can be isolated from the pickups by removing jumpers or cutting PCB tracks at marked places. Probably similar for any lights. So no major surgery should be required and you can  solder in a decoder, to marked solder pads on the PCB.   These days I consider "DCC Ready" to be an indicator of the loco having a socket and blanking plate installed, ready to receive a plug-in decoder, but there have been locos sold as "DCC Ready" but still requiring a hard-wired decoder install.
Nick.   2016 celebrating the 20th anniversary of "Königshafen" exhibition layout!

Offline GlosGreaves

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Re: Whats DCC Comptible actually mean? Just bought a Farish 371-931A
« Reply #3 on: February 19, 2020, 05:51:27 PM »
I have looked but cant see anything obvious (am very new to this mind)

Its not a diesel but a GWR Pannier

Offline GlosGreaves

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Re: Whats DCC Comptible actually mean? Just bought a Farish 371-931A
« Reply #4 on: February 19, 2020, 05:52:43 PM »
Here is the other side

Offline Railwaygun

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Re: Whats DCC Comptible actually mean? Just bought a Farish 371-931A
« Reply #5 on: February 19, 2020, 05:52:57 PM »
this may give you some idea of what is involved ( on a similar GF pannier tank loco)

https://www.youtube.com/watch?v=S_l6RUdKXm0

https://www.ngaugeforum.co.uk/SMFN/index.php?topic=1264.45
« Last Edit: February 19, 2020, 05:54:57 PM by Railwaygun »
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Online ntpntpntp

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Re: Whats DCC Comptible actually mean? Just bought a Farish 371-931A
« Reply #6 on: February 19, 2020, 05:54:34 PM »
@GlosGreaves   Well I certainly wouldn't consider those chassis to be DCC Ready, and hardly DCC Compatible out of the box: they require modifications to isolate the bottom brush holder from the metal chassis block - I believe there's a little part called a Digihat which is commonly used for that purpose.
« Last Edit: February 19, 2020, 05:55:40 PM by ntpntpntp »
Nick.   2016 celebrating the 20th anniversary of "Königshafen" exhibition layout!

Offline Bob G

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Re: Whats DCC Comptible actually mean? Just bought a Farish 371-931A
« Reply #7 on: February 19, 2020, 05:58:23 PM »
At worst it should mean there are places on the PCB to solder to, yes.

Have you looked at the PCB? The diesels with solder tabs are fairly obvious.

Its a Farish 8750 class pannier tank of China production based on a Poole design.  It has no tags and would need a digihat type conversion.
Conversion is do-able but its hardly a DCC ready model.

Hope this helps.
Bob

Offline GlosGreaves

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Re: Whats DCC Comptible actually mean? Just bought a Farish 371-931A
« Reply #8 on: February 19, 2020, 06:02:11 PM »
Thanks everyone

Will invest in a digihat kit from DCC Supplies first thing and will probably end up taking it to my local club on Tuesday so I can get a bot of assistance with this one.

I had hoped it would be a bit easier then this but such is life!

Thanks

Darren

Offline Railwaygun

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Re: Whats DCC Comptible actually mean? Just bought a Farish 371-931A
« Reply #9 on: February 19, 2020, 06:03:19 PM »
@GlosGreaves   Well I certainly wouldn't consider those chassis to be DCC Ready, and hardly DCC Compatible out of the box: they require modifications to isolate the bottom brush holder from the metal chassis block - I believe there's a little part called a Digihat which is commonly used for that purpose.

https://www.dccsupplies.com/item-p-100525/digi-hat-single-pack

and a rival
https://wicknessmodels.co.uk/product/marwick-brush-insulating-sleeve/

https://www.facebook.com/marks.trains.uk/posts/the-marwick-brush-insulating-sleeve-used-in-conversions-of-graham-farish-poole-b/1965829697059240/

https://www.youtube.com/playlist?list=PLQZGvJCD0M7RYQpd4ndq3sfCXCD_hbNbz

The 'MarWick' Brush Insulating Sleeve
« Last Edit: February 20, 2020, 04:19:18 PM by Railwaygun »
This has been a public service announcement
It may contain alternative facts

Caveat lector

The largest Railwaygun, Armoured Train & Military Rail group in the world!
https://groups.io/g/railwaygun/topics

My Military Rail Pinterest area
https://uk.pinterest.com/NDRobotnik/

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https://www.10mm-wargaming.com/

Motto: Semper ubi, sub ubi

Online njee20

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Re: Whats DCC Comptible actually mean? Just bought a Farish 371-931A
« Reply #10 on: February 19, 2020, 06:07:47 PM »
Poor form. That’s absolutely not DCC ready then IMO. That simply means “is physically possible to convert”, which is basically every model.

Online jpendle

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Re: Whats DCC Comptible actually mean? Just bought a Farish 371-931A
« Reply #11 on: February 19, 2020, 08:07:15 PM »
I would agree. DCC Compatible should mean that soldering in a wired decoder and removing a few jumpers is all that needed, or even cutting some wires and adding a decoder.
IMO any loco that needs a digihat or similar is definitely NOT DCC compatible.

Regards,

John P
Check out my layout thread.

Contemporary NW (Wigan Wallgate and North Western)

https://www.ngaugeforum.co.uk/SMFN/index.php?topic=39501.msg476247#msg476247

Offline N_GaugeModeller

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Re: Whats DCC Comptible actually mean? Just bought a Farish 371-931A
« Reply #12 on: February 19, 2020, 10:40:02 PM »
hattons.co.uk - Graham Farish 371-931A Class 8750 0-6-0 Pannier Tank 4606 in GWR Green.
https://www.hattons.co.uk/32948/graham_farish_371_931a_class_8750_0_6_0_pannier_tank_4606_in_gwr_green_/stockdetail.aspx

Offline Steven B

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Re: Whats DCC Comptible actually mean? Just bought a Farish 371-931A
« Reply #13 on: February 20, 2020, 09:28:34 AM »
If you've bought it from Hattons then ask to send it back for a refund as it's been mis-described. There's no way that model is DCC compatible.

Early Farish class 60 and 66s were DCC compatible. They have metal clips on the PCB that you can remove to allow a decoder to be solder in place.

Virtually everything else is DCC ready (including the newer Panniers from Farish and Dapol) and takes either a 6 pin (like the decoder you have?) or an 18 pin (Next18) decoder.

Otherwise, you'll need a Digihat (or similar) and a decoder with wires on.

Steven B.

Offline davidinyork

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Re: Whats DCC Comptible actually mean? Just bought a Farish 371-931A
« Reply #14 on: February 20, 2020, 01:47:35 PM »
Early Farish class 60 and 66s were DCC compatible. They have metal clips on the PCB that you can remove to allow a decoder to be solder in place.

The earlier runs of the current Class 57 tooling were the same. Later ones have a 6-pin socket.

 

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