Is it possible to convert an old GWR King Class 'King George II' to DCC?

[Apache6467]

Hello. I recently acquired a good analogue GWR king class. Its a fairly old model that runs great. Only problem is that I am running a DCC layout....

My dad and I cannot figure  out how to convert it so any help would be appreciated.

 

Apache6467

[96RAF]

Is this any good - not sure if its the model you have.

[Apache6467]

Is this any good - not sure if its the model you have.

No... Its more like this... http://samicarken.com/files/2010/06/P8290007.jpg

[KNAP]

Lot of install guides on youchoos site

http://www.youchoos.co.uk/Index-Resource.php?L1=Guides&Item=HornbyKing

[Howbi]

Have a look at service sheet 206B dated 2000.........there is a special connection to the tender with pick-up wiring to carry track current to the Ringfield motor in the tender.......is this your model?.......if so, someone will be able to explain how to install a decoder........HB

[Fishmanoz]

The service sheet is 112A and the tender is on the back of it.  Search Hornby Guide on King George II to find it.

 

I find it difficult to determine what Ringfield type it is from that drawing.  Google Brian Lambert, go to his DCC pages and find conversion guides for the 3 types of Ringfield.  The critical thing is to make sure the left hand brush connection is isolated from the chassis else you will blow the decoder.

[The son of Triangman]

A word of warning about the previous post to those fitting a type 3 ringfield to avoid blowing a decoder see sheet 104 as well as 112, type 3 ringfields have a small cast pin that acts as secondary contact to one brush holder tab on the type 3 motor. The brush contact tab which contacts this pin sits behind a bit of plastic, gentle work with pilers to move this metal tab in front of the plastic tab and addition of a bit of heat shrink will insulate the tab from the cast contact. Earlier type 2 ringfields also had a continuity wire between chassis casting and brush contact this should be removed during DCC conversion.

 

Anyway back on course the king mentioned originally is R.303 madede in 1995 to 1996 King George II in BR late livery with double chimney.  Service sheet for R.303 is number 206. This is a 3 pole motor with plastic face plate and screw on brush contacts. You will need to use nylon insulating washers under the screws holding the brush contacts on as one screw is longer than the other and makes contact with the cast chassis.  Both screws need insulating washers. The capacitor should be removed. Power is supplied from the loco by a drawbar contact to the tender pin and from one side of the tender wheels, connect a black decoder wire to the motor casting for the negative feed and a red wire from the decoder to the wire leading from the chassis pin, solder grey to one motor contact and orange to the other and sleeve the decoder. The decoder will just fit in the tender top but it is a squeeze.

 

Note all locos being made DCC should be good runners before conversion, conversion will only make a bad runner run worse.

 

For those interested in Hornby history catalouge number R.303 has also been used for the Evening Star model.