doubleno Posted March 10, 2017 Share Posted March 10, 2017 I have just bought a boxed Hornby OO LMS Duchess of Southerland loco from a Charity Shop and plan to post it to my grandson as a present, but I have no track or Control Unit to test it, to see if it functions. Any ideas? I do have a Multimeter. I also have a car charger with 6v and 12v High and Low settings, but I hesitate to link that up to the engine, as I don't know enough. I don't want to damage the loco. Thanks for your thoughts. Link to comment Share on other sites More sharing options...
Chrissaf Posted March 10, 2017 Share Posted March 10, 2017 Use a new PP3 9 volt battery (either way round). The terminals are the right distance apart to bridge the wheels. If the motor doesn't spin on the first wheel set axle, try the others. This assumes that the loco doesn't use pickups that are split between the loco and tender. That is to say, one side of the pickups is on one side of the tender, and the other side of the pickups is on the opposite side of the loco..Using a multi-meter on ohms resistance scale should pickup the motor winding resistance when the probes are connected to the correct pickup wheels. It is hard to say what resistance you might measure, but I would think it will be less than 100 ohms..A car battery charger output is likely to be very spikey and unregulated, whereas a 9 volt battery is pure DC and less likely to do the loco motor any harm. If you do use the battery charger then use the 6 volt low setting, but personally I would advise against it..Do you know the loco Rxxxx number. If you do, state what it is. The loco service sheet should give the information about the loco pickup arrangements. Link to comment Share on other sites More sharing options...
doubleno Posted March 10, 2017 Author Share Posted March 10, 2017 Use a new PP3 9 volt battery (either way round). The terminals are the right distance apart to bridge the wheels. If the motor doesn't spin on the first wheel set axle, try the others. This assumes that the loco doesn't use pickups that are split between the loco and tender. That is to say, one side of the pickups is on one side of the tender, and the other side of the pickups is on the opposite side of the loco..Using a multi-meter on ohms resistance scale should pickup the motor winding resistance when the probes are connected to the correct pickup wheels. It is hard to say what resistance you might measure, but I would think it will be less than 100 ohms..A car battery charger output is likely to be very spikey and unregulated, whereas a 9 volt battery is pure DC and less likely to do the loco motor any harm. If you do use the battery charger then use the 6 volt low setting, but personally I would advise against it..Do you know the loco Rxxxx number. If you do, state what it is. The loco service sheet should give the information about the loco pickup arrangements. Thanks for that, Chrissaf. There is "R.066" printed on the box. Is that what you mean?Where might I find the "loco service sheet"? Link to comment Share on other sites More sharing options...
Chrissaf Posted March 10, 2017 Share Posted March 10, 2017 Yes R.066 is the number required and shown on the following service sheets. I'm no expert on locos this old, but looking at the service sheet. I believe (I may be wrong) that the loco uses split pickups. One side of the motor gets power via the loco wheels and the other side of the motor gets power via the tender wheels on the opposite side. But it will require someone more knowledgeable than me to confirm this and to advise what sides ie left side or right side on loco & tender..Click the links below.Loco service sheet is HSS 111Tender service sheet is HSS 104.These sites below provide service sheets for the older loco products (typically Triang & Rovex brands). The links above are taken from the first site (Lendons Model Shop). The later Hornby service sheets are on this Hornby website under the 'Help & Advice' menu at the top of this page..http://www.lendonsmodelshop.co.uk/index.asp?button=button2&servicesheets=none.http://www.hornbyguide.com/service_sheet_menu.asp Link to comment Share on other sites More sharing options...
Ruffnut Thorston Posted March 11, 2017 Share Posted March 11, 2017 To confirm that the motor is in the tender on the original Hornby Duchess..It is a "Ringfield" Motor. The tender wheels without "rubber" tyres are one side of the pick-up. The "Pin" on the tender front is the other terminal, and picks up the current from one side of the locomotive via the chassis and two "brass" wipers in the loco to tender coupling drawbar. The quick way of testing the motor would be one wire to the pin, and one one touching one of the two outer wheels without tyres on the tender... Link to comment Share on other sites More sharing options...
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