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Old 16-11-2017, 09:52 PM   #1
terryj
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Default train goes wrong way

just got an hornby 751 and it goes in the opposite direction to all my other trains
is it just a case of dropping out the armature and putting back the other way around http://www.hornbyguide.com/service_s...sp?sheetid=126

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Old 16-11-2017, 10:03 PM   #2
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don't take out the armuture terry just chand over the polarity of the two wires going to it ,i don't know what your model is like dut should not be a major job
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Old 16-11-2017, 10:12 PM   #3
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I was going to say that all it is is the pick up wires to the motors need reversing. If it is DCC it can be done via the programming instead.
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Old 16-11-2017, 10:15 PM   #4
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Hi the polarity is wrong. Easy way to check is study the service sheet you have and make sure that all the motor contacts and the spring which holds the brushes in place are all fitted correctly. Make sure also that the small insulator on the spring which locates to one of the brushes is on the right hand side of loco as per the service sheet.
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Old 16-11-2017, 10:16 PM   #5
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Red and Black wires need switching on loco.
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Old 16-11-2017, 10:17 PM   #6
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Am I right in assuming that we are talking DC here. Not DCC. John
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Old 16-11-2017, 10:20 PM   #7
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Which wires Brian. The service sheet has no wires. John
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Old 16-11-2017, 10:30 PM   #8
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If the motor has no red and black pick up wires, the motor must of been repaired and put together with the polarity reversed or fitted the wrong way round.
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Old 16-11-2017, 10:32 PM   #9
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its dc
the contacts from the wheels go straight to the motor block as far as i can tell
it has 2 wires coming from the rear wheels which would be easy to swap but the front has me baffled
judging by the state of the internals its always gone the opposite way and its made in england so i cant even blame the chinese
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Old 16-11-2017, 10:37 PM   #10
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Quote:
Originally Posted by Footplate1947 View Post
Hi the polarity is wrong. Easy way to check is study the service sheet you have and make sure that all the motor contacts and the spring which holds the brushes in place are all fitted correctly. Make sure also that the small insulator on the spring which locates to one of the brushes is on the right hand side of loco as per the service sheet.
thanks will have a good ferret at the gubbins tomorrow
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