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Bristol Barrow Road - Wiring Progress 3


barrowroad

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I've had a train - Bachmann Peak D41 on Rumney Chassis plus four Bachmann MK1s performing a test run through the storage sidings. The test traversed Board 9 to Board 18 and involved a number of successful forward and reverse moves - I really must register on Youtube and take some videos.

 

Wiring has progressed further since my last entry with the production of 16 wiring looms for the analogue Cobalt point motors. These are positioned along the double track main line and will be operated from two signal boxes at either end of the scenic section of the layout - Engine Shed Sidings - 6 Cobalts and Lawrence Hill Junction -12 Cobalts. The former have been wired in whilst I have been working on the latter today. All 12 are on Board 8 - the busy board.

 

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Each loom consists of 9 long [20mm] pins that are at 2.54mm pitch. I have soldered single core 1/0.6 wire to each pin - colour coded - and soldered the other ends to a tag strip.
The next photo also shows the Brian Morgan operating linkage for the pair of double slips on this board marked LT43a and LT38; and LT19a and LT20.

 

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The final photo for today shows a close up of the inter-board connectors I am using. They are Trident brand and are 12 pin male and female units. The 'L' mount for the female ones was made be a local company.

 

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Looking very neat as usual Robin

Where did you get your inter-board connectors?

I'm after something similar myself

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Robin,

Wiring looking very neat and tidy, as always. There are quite a few wires connecting to your point motors, so I imagine some of them are for polarity switching using on-board contacts? I fitted Tortoise motors but used extra poles on the panel switches to switch polarity as I'd read that the on-board contacts were not all that reliable. Of course, my approach vastly increased the number of wires to and from the panel and I ended up with rather more pins in my board connectors!

The mechanical linkages under the point operating units look very complex but very neat and well engineered. They put my efforts with plastic sliders and "00" rail rodding, to shame and no mistake.

Dave.

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Dave,

The analogue cobalts have 9 terminals. I have wired up eight, leaving terminal 3 which is designated for the 'frog' by DCC Concepts. As I am using separate a BUS for the motors I'm using one of the on board switches so terminals 1 & 2 are DC power in; 4,5,6 are the switch [6 common] and the three white wires are the spare [at present] switch.

The Digital Cobalts have 8 terminals wired in a similar fashion. I had to telephone DCC Concepts to clarify a wiring discrepancy on their older digital units, the label of which shows the common terminal as 8, whilst the online information identifies it as 6. The latter is correct. Apparently the older digital cobalts have incorrect labels. Have they told anyone before me???

 

The mechanical linkages are rather too complicated if I'm honest. The standard Brian Morgan units are fine but the slips are problematic.

 

Robin   

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Brian Morgan products are available from the Scalefour Society Stores.

www.scalefour.org/eshop/

You don't have to be a member to make a purchase of them.

They are etched TOUs. Left and right turnouts, single and double slips are available. There are linkages available for both types of slips - which also contain a screw adjuster - to enable the TOU to be linked to your choice of point motor. Hope this helps

Robin

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