Steve1976 Posted November 9, 2014 Share Posted November 9, 2014 Hi, new to this site and to model railways so here goes. My little boy has been given an old R758 BR Hymek diesel loco and I want to fit DCC so he can run it on his track. I can't seem to find any instructions anywhere on how to fit DCC. Hope I don't come across as an absolute thicko but I am completely new to model trains. Regards Steve Link to post Share on other sites More sharing options...
RMweb Gold Phil Bullock Posted November 9, 2014 RMweb Gold Share Posted November 9, 2014 Hi Steve I know its the Thomas version but I guess the internals are the same so this might help http://www.Hornby.com/Hornby-dcc/decoder-installation-guides/r9097-d7101-decoder-installation Phil Link to post Share on other sites More sharing options...
Durranhill Posted November 9, 2014 Share Posted November 9, 2014 The Hornby service sheet for Hymek R758 shows it to be fitted with an early type of motor which I suspect will draw a lot of current so will need a suitable decoder to cope with it & both brushes will also need to be insulated . http://www.hornbyguide.com/service_sheet_details.asp?sheetid=123 Stewart . Link to post Share on other sites More sharing options...
Butler Henderson Posted November 9, 2014 Share Posted November 9, 2014 Have you seen the loco running? If not try a 9v battery on its wheels to see it the motor turns. To dcc it you need to find out the current it draws when stalled (ie held in place on the track) and this will need a 12v supply (of I would suggest 2 amp output at least) and a multimeter. Connect the 12v supply to the track (having disconnected the dcc system) with one feed passing the through the multimeter which is set to a suitable amp range. See what the max amperage is and you need a decoder to handle that current. To fit the decoder refer to the service sheet mentioned above and note the X665 brush spring and insulator. What you need to do is to make a matching insulator, from a bit of plastic sleeving, to the X67 brush on the opposite side of the brush spring. The existing insulated brush spring will hold a wire against the X67 brush, usually the wire is soldered to a brass tab identical to the top of the X67 brush - this wire should be soldered to one of the track wires of the decoder. One of the motor wires instead goes to the brush. Similarly the other motor wire goes to the other brush. Finally the remaining track wire needs to attached to a live part of the chassis. Link to post Share on other sites More sharing options...
SRman Posted November 9, 2014 Share Posted November 9, 2014 It can be done even with the old style motor bogie. I have a double-motored one with those original style motor bogies, using a TCS T1 decoder to power both motors.I know I took pictures at one stage - will see if I can find them and post them (no promises though). Link to post Share on other sites More sharing options...
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