The son of Triangman Posted August 4, 2018 Share Posted August 4, 2018 Depends on how much your motors stall current is and what space you have for the decoder. You need to find out the stall current of the motor first and to assertain if the models are in good running order and condition as DCC will show up any running faults. All locos converted should be good runners, have clean wheels and have good lubrication or have been recently serviced.. Link to comment Share on other sites More sharing options...
The son of Triangman Posted August 4, 2018 Share Posted August 4, 2018 Also forgot to mention that motor magnets loose magnetism over the years so as the magentism gets less the current drawn by the motor coils increases, a motor rated at 400milliamps when new could be drawing 700milliamps or more now. Link to comment Share on other sites More sharing options...
2e0dtoeric Posted August 4, 2018 Share Posted August 4, 2018 This should be in the DCC threads - -and people are still using the 'repeat post' instead of the 'reply to' buttonsPLEASE scroll down to the empty white section, put your words in there, and reply with the GREEN button, then your response doesn't get lost in what has been put previously! Link to comment Share on other sites More sharing options...
RDS Posted August 4, 2018 Author Share Posted August 4, 2018 @ Australian model rail roadI have removed your 'empty' post, that was just a copy of the SoT post, without anything added.(Please note that the best way to reply to a post is just to use the white box at the bottom of the screen and the Green button, rather than the Blue button) Link to comment Share on other sites More sharing options...
RDS Posted August 4, 2018 Author Share Posted August 4, 2018 What are the best decdersto use for the old ringfield hornby and Lima motors Link to comment Share on other sites More sharing options...
Chrissaf Posted August 4, 2018 Share Posted August 4, 2018 SoT mentioned finding out the "Stall Current" of the old locos to be converted. 'How To' do this is documented here:http://www.brian-lambert.co.uk/DCC.html#NORMAL.The motor magnets loosing magnetism and the effect of this on current drawn is demonstrated in this video: The video is based upon X03/04 open frame motors, not 'Ringfield' but the principle explained is the same. Link to comment Share on other sites More sharing options...
Australian model rail road Posted August 4, 2018 Share Posted August 4, 2018 Ronald Dodd remagntiser is no longer on Ebay Link to comment Share on other sites More sharing options...
Chrissaf Posted August 4, 2018 Share Posted August 4, 2018 I didn't say it was......I was using the video as an example video that demonstrates the issue of failing magnets. Link to comment Share on other sites More sharing options...
Australian model rail road Posted August 4, 2018 Share Posted August 4, 2018 A friend here in Australia reckons he can build me one of these re magnetisers. I think it just would be to costly to get it from the UK I will inform of progress it looks basic he tells me if it is successful I will send some pictures Link to comment Share on other sites More sharing options...
96RAF Posted August 4, 2018 Share Posted August 4, 2018 On the subject of DIY magnetisers have a look at this... https://www.instructables.com/id/How-to-make-your-own-Metal-Pulse-Magnetizer/ Based upon what I see in that article I reckon you could use a CDU as used for firing solenoid points and instead of firing a point motor you fire the magnetiser coil. I don’t have the time nor the inclination to make one but would be interested to know if my theory would translate into practice. You can buy one https://www.aliexpress.com/item/latest-heavy-duty-demagnetizer-and-magnetizer-combation-large-for-rolex-watches-and-many-other-watches/1683589675.html?aff_platform=aaf&cpt=1533391874479&sk=bhoblvJi&aff_trace_key=873e7eb8c0b947d2b5793da484eed683-1533391874479-08592-bhoblvJi&terminal_id=9e75595b5d884268aaecc0938681a5f2 Or just for the fun of it you could design a bespoke unit specific to your motor.....https://aip.scitation.org/doi/full/10.1063/1.5006442 😇 Rob Link to comment Share on other sites More sharing options...
The son of Triangman Posted August 4, 2018 Share Posted August 4, 2018 Even if you remagnetised the motors you still need the motor/s and the loco chassis etc to be in good mechanical fettle. Remagnetising is not a cure all for DCC conversion. Link to comment Share on other sites More sharing options...
Australian model rail road Posted August 5, 2018 Share Posted August 5, 2018 My mate who does all my electrical work tells me my solution is under my nose or more like in my workshop it is a drill with a electro magnet base he reckons this with remagnetise the magnets I will give it try to see if it works if so problem solved Link to comment Share on other sites More sharing options...
96RAF Posted August 5, 2018 Share Posted August 5, 2018 Think about how you will remagnetise the magnet.In a ringfield motor it tends to be circular although some have twin arch shaped magnets. ...using the old ‘stroking’ method with another magnet needs to be done in the correct direction to keep the poles correct else you will end up worse off than now. At least the proper pulse magnetisers will reliably flash a magnet in one go with a known ‘charge’. Rob Link to comment Share on other sites More sharing options...
Australian model rail road Posted August 5, 2018 Share Posted August 5, 2018 I thank you very much for your help I think I have plenty of information about this subject and should be able to do the job to restore the magnets Link to comment Share on other sites More sharing options...
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