The_Warship_One Posted January 12, 2016 Posted January 12, 2016 I recently bought a second hand class 37 as part of a job lot, it runs OK on the straights but when it begins to turn the transformer cuts the power to the track, can someone help me?http://hornbyguide.com/item_details.asp?itemid=3
Fozzy Bear Posted January 13, 2016 Posted January 13, 2016 Have you pulled it apart and had a look inside?
walkingthedog Posted January 13, 2016 Posted January 13, 2016 If the controller cuts out there must be a short circuit. You say it happens on a curve so as the bogie turns something must be shorting. Remove the body and see if you can see any badly connected wires that touch each other. A photo of the inside would be very helpful.
The_Warship_One Posted January 13, 2016 Author Posted January 13, 2016 I haven`t taken it apart. It looks like there is a screw missing and someone has glued the bodyonto the chassis.
Rog RJ Posted January 13, 2016 Posted January 13, 2016 I think the motor bogie should just drop out of the housing if you release one of the hook clips at the front of the bogie (or should it be the rear) with a screwdriver to hold the clips back. I don't think there should be any screws holding it together and I think the upper part of the bodywork unclips from the bottom part if needed. I'm sure someone with more knowledge of this assembly method than me will be able to explain further.
Tony57 Posted January 13, 2016 Posted January 13, 2016 HiCan you please identify what version of the class 37 you have got please as there is a ringfield version and an older Triang Hornby version R751 which requires the body to be release from the chassis to get to the securing screw of the power bogie.
The_Warship_One Posted January 13, 2016 Author Posted January 13, 2016 I have the Hornby Railways version in BR blue released from 1977 to 79, running no.37 130, catalouge no.R751 with the ringfield motor
Tony57 Posted January 14, 2016 Posted January 14, 2016 Hi thanks for you reply. What I would do is remove both the motor bogie unit and the non motored bogie put both on the track and run then around so see what is happening. To do this turn the loco on its back with the aid of a flat blade screwdriver ease the rear lug on the bogie forward towards the motor and the motor will just lift out. Disconnect the connecting wire between the motor and the non motor bogie then do the same to the non powered bogie, put both on the track and reconnect the link wire. run the two units around the track and see if you get the same problem. As the bogies are plastic I can not see them shorting out unless a tack ot other metalic object has been picked up. It could be that the link wire may have broken in the sleeve and as it goes around the corner at this point power is lost to the motor.
LCDR Posted January 15, 2016 Posted January 15, 2016 Are you sure it is a Ringfield motor? Most R751s had the X337 metal motor bogie with a double worm motor shaft driving pinions on axles 1 and 3, axle 2 being a dummy part of the chassis casting. If this is the case you will HAVE to remove the body first. There are two lugs centrally on the chassis that fit into holes in the body moulding. The body is also screwed to the chassis, it is visible underneath passing from the chassis into the body, so you have to turn the loco upside down. However if someone has glued it you will probably have to run a sharp Stanley Knife blade between the body moulding and the chassis to seperate it. I hope that is not the case, as it risks damaging the body or chassis..Look at this.http://www.hornbyguide.com/service_sheet_details.asp?sheetid=22
The_Warship_One Posted January 15, 2016 Author Posted January 15, 2016 Yes you are right it is the x337 version. When I looked it up on the honby guide it told me it had a ringfield motor. I managed to open it and it looks like someone has tried to do something with it before as there is very bad soldering on the motor and thepower pickup bogie.Thanks for the advice I got it off using a knife without damaging anything
The son of Triangman Posted January 16, 2016 Posted January 16, 2016 Ah the old Tri-ang X.337 power bogie, it could be down to a variety of things, usual causes are a track pint that the traction magnets have picked up and which is sitting behind a wheelset causing a short as the wheelset moves on a curve, worn insulation bush on the insulated side of the axles allowing an insulated wheel to brush against the live chassis casting, and home bodges with wiring etc. If in doubt I would take it to a Tri-ang expert to be properly serviced. I know someone who could sort it out for you, he's near the norfolk coast.
trainlover23 Posted January 16, 2016 Posted January 16, 2016 Ah the old Tri-ang X.337 power bogie, it could be down to a variety of things, usual causes are a track pint that the traction magnets have picked up and which is sitting behind a wheelset causing a short as the wheelset moves on a curve, worn insulation bush on the insulated side of the axles allowing an insulated wheel to brush against the live chassis casting, and home bodges with wiring etc. If in doubt I would take it to a Tri-ang expert to be properly serviced. I know someone who could sort it out for you, he's near the norfolk coast.YES YOU others are available
walkingthedog Posted January 16, 2016 Posted January 16, 2016 Trainlover how very kind of you to recommend SoT.
trainlover23 Posted January 16, 2016 Posted January 16, 2016 Trainlover how very kind of you to recommend SoT. Recommend him not really
The_Warship_One Posted January 16, 2016 Author Posted January 16, 2016 I found the problems, it has been re-wired but the wires have been crossed and the housing contact washer is missing.
The son of Triangman Posted January 16, 2016 Posted January 16, 2016 Glad you managed to sort the fault with it, it will probably need a good service as well.Trainlover23, have I offended you?
96RAF Posted January 16, 2016 Posted January 16, 2016 As I keep saying SoT - you should be a sticky ref out on Hornby's site. I see no indication on the forums as to why 37L has gone into grumpy mode - if that's what it is and not just poor grammar..
96RAF Posted January 16, 2016 Posted January 16, 2016 37L isn't on this thread RAF. TL23 was who I meant -23/32 dyslexia....blame it on my meds.
walkingthedog Posted January 16, 2016 Posted January 16, 2016 I blame a lot of things on the tablets RAF..
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