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Install Guides by Loco Class General - Fitting Decoders General - Fitting Kit CT Elektronic Reference

YouChoos Installation Guides

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Dapol O Gauge 14XX

Example 1 - Dapol O Gauge 14XX - with improved speaker

Kit: MX644D; IceCube28X18X08-2W

Dapol have innovated with their 14XX in O gauge, with a plug-in PCB to house both decoder (21pin) and speakers. The PCB comes with a pair of clip-in housings which will take a pair of the 15x11mm Sticky Gasket speaker components. Once the housings are clipped back onto the PCB, spring clips on the speakers make contact with points on the board. Very neat.

If you want simple, then stick with that approach, and the results are quite reasonable. However, if you don't mind just a little more effort, a dual IceCube 28x18x08 2W speaker can be used instead, as shown here...

Wires from the IceCube can be neatly threaded through holes in the PCB, and soldered to one pair of the contact pads. Then, using the sticky pads provided with the model, the IceCube is secured to the board, also acting as an insulator so that none of the metal parts of the speaker touch the board. The speaker could just as easily be placed the other way up too (with the metal parts away from the board).

The whole assembly, with the small example stay-alive capacitor, simply slides back into the boiler, using this neat little arrangement that Dapol have come up with.

Looks like the space is perfect for the 8mm dual IceCube!

Photos courtsey of John Myall

Example 2 - 9mm IceCube and SuperCap stay-alive

Kit: MX644D; IceCube28X18X09-2W; LifeLink+17000uF SuperCap; Bi-Colour Lamps

Ok, so that's pretty good so far, but just how big can we get a speaker in, and is a big stay-alive possible too? Turns out the answer is positive to both questions...

Same approach, but this time with 9mm dual Ice28X18. Solder speaker wires direct to a pair of the speaker pads on the model's PCB and secure the speaker with some BlackTack, plastic side against the PCB.

SuperCap17000uF sits at the other end of the speaker-side of the PCB. Wrapped in Kapton tape to protect the SuperCap's metal body from touching any pads. Blue and Grey wires from the capacitor can feed through one of the holes in the board.

LifeLink sits between the capacitor and the decoder, also wrapped in Kapton tape, and the whole assembly neatly slides into the boiler - a perfect fit!

However, we didn't want to stop there, so we've wired on a front and rear bi-colour YouChoos lamp, soldered directly to appropriate feet of the 21pin adapter on the model's PCB, and of course added the obligatory crew figures.

Disclaimer

Please note that these guides are provided as useful resources for you, as-is. YouChoos cannot be held responsible for errors in the information, or for any damage caused to your models or equipment if you choose to follow any of the steps detailed here.


A bit of YouChoos poster art for your enjoyment!