In this video, we take a look at an alternative method for replacing the ringfield/pancake motor in older Lima and Hornby models with a brand new CD/DVD drive motor.
We also have step-by-step written instructions, which you can download here: www.strathpefferjunction.com/...
Update: You can now buy our ringfield motor adaptors at www.strathpefferjunction.com/...
We've used glue and brass tube in earlier projects to support the new motor, and while it works well, it can be a fiddly process, it takes time and can be hard to reverse.
Using a computer-designed and 3D-printed adaptor, you can quickly and simply install and perfectly align a replacement DC motor. If you ever needed to replace a component, or indeed wanted to reinstall the original ringfield motor, it's entirely possible to do so. This is a non-invasive alternative!
This is a detailed, step-by-step video and you'll probably want a cup of tea or coffee and a comfy chair. The methods used in this video are not necessarily the only way to do it, nor necessarily the best.
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00:14 - Introduction
01:36 - Dismantling the motor bogie
03:24 - Preparing the new drive gear
05:18 - Designing the 3D-printed adaptor
07:06 - Assembling the new motor and adaptor
09:18 - Installing the new motor
16:13 - Wiring it all up
19:28 - Test run on the rolling road
22:16 - A look at the heat generated by the motor
26:26 - Wrapping it all up
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The 10mm CD/DVD drive motor should work in most Lima models locomotives of the following OO gauge classes: 08, 09, 31, 37, 40, 47, 52, 59, 60, 66 and 92. Other models may be able to accommodate a larger 12mm motor, but you must check dimensions yourself first and the 3D printed part would have to be altered accordingly.
The replacement motor is a 12000rpm, 6V, 0.03A DC motor. The output from a DCC decoder or a DC controller can reach 12V DC (sometimes a little higher) at the top end. In order to avoid motor burn-out and prolong motor life:
1. Diodes should be used to reduce voltage (as shown in the video),
2. DCC decoders should have their CV5 value reduced (if available), and
3. Top speeds should be kept to a minimum and run at higher speeds for short periods only.
The PLA+ plastic filament used in the production of the adaptor has a glass transition temperature of 50°-60°C (the point at which it may begin to soften). Our trials showed the motor got up to about 47.6°C after an hour of constant running at medium-to-fast speeds.
Under normal 'home' use, it's unlikely that the plastic will be adversely affected by motor temperature, however if the motor is used for very long periods or worked hard with a long rake etc., its temperature may begin to exceed the glass transition temperature of the plastic and it may begin to soften.
Our accompanying website article is here: tinyurl.com/3d-printed-motor-...
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You can buy some of the consumables and tools featured in this video via these Amazon affiliate links:
* 10mm 6V motor: amzn.to/2HtkpYa
* 8-tooth, 2mm ID/5mm OD gears: amzn.to/2HtWI1C
* Surface mount (SMD) rectifier diodes: amzn.to/2JnqkDE
* Through-hole rectifier diodes: amzn.to/2sQweSH
* Rigid.Ink PLA+ filament: amzn.to/2takESF
* FlashForge Creator Pro 3D printer: amzn.to/2LQt2P6
* Flir One thermal camera for android: amzn.to/2sZwC2p
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Thank you very much for watching.
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Visit us at: www.strathpefferjunction.com
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Please note: I’ve drawn upon ideas and suggestions from a range of channels and people, as well as implementing my own. If you choose to follow any of the steps outlined in the video, you do so at your own risk and any damage to yourself, your models or your equipment is your own responsibility.
14 июн 2018
