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Feltham Road MPD


RAY NORWOOD

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I have been doing some wiring on board two today. I ran the bus wires red and black (the thick wires) then soldered the droppers red and black (the thin wires), the blue and green wires are for the controller for the sector plate, and the white and green wires are for yard lights and lights in the shed. Got to connect to the socket on the left, the bus wires I am waiting to be delivered. On the right of this board is the sector plate and then to the storage sidings. I have to lay the storage sidings but got to get the copperclad sleepers.

 

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  • 3 weeks later...

Todays Update.

I have just finished wiring the baseboards, I have wired board one so I can operate from either side by fitting the control panel to the back or the front. I have done the MERG DCC Command Station to go under Baseboard one, the next job is to build the MERG servo drive board and the MERG DCC Controller.

 

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The wiring under board one. The D connecters at the top and bottom is to connect the control panel at the front or back of board one and the left connecter is for the point operation and the switch's for the lights. the connecters on the right is for the turntable.

 

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The MERG DCC Command Station, I just got to test and put the IC's on and then put under base board and put on the wires.

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  • 3 weeks later...

Not much of an update.

I have finished building the DCC Command and the controller. I had a problem with the controller and it turned out to be a dry solder joint, all salted and working. So got the first loco running yesterday. I am now starting on the control panel.

I am very pleased.

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Not much of an update.

I have finished building the DCC Command and the controller. I had a problem with the controller and it turned out to be a dry solder joint, all salted and working. So got the first loco running yesterday. I am now starting on the control panel.

I am very pleased.

Hi Ray

 

Glad you're making progress.....Keep up the good work...

 

Cheers Bill

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Long awaiting update.

 

As previous thread I have got the MERG controller and the command station made and working.

 

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I have been busy making the control panel, on this panel there is the turntable control on the left side, a rotary switch to point to which road to line up to then press the red button to start the table. The Head and Tail switch is for which end of the table to line up to the shed roads, the learn and run switch is for setting the table up. The rest of the switch's is self explanatory.

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The two brackets at the front is so I can operate from the back if need be, there is the same brackets but upside down so it just slots together. I done it like this so the schematic is in orientation with the layout.

 

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HO I forgot, the box is a project box from Rapid Electronics.

 

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These buffer stops is what I had left from when I done Hounslow siding.

 

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The buffer stops are from Lancashire models. I think they are look very nice.

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  • 2 weeks later...

UPDATE

 

I got the plywood for the backscene the other day, I cut the plywood into 4ft long x 18ins high, what you will see is 1ft  high  for the backscene  to go on. It is all glued and pinned in place, I also cut 4ft x 8ins for the front, 2ins above the baseboard, I then cut the top to shape, then glued and pinned into place. The backscene will be   Into The Town   from ID backscene that is to go on.

 

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The far end is the storage and sector plate. I intend on putting a single line railway bridge in front of the entrance to the storage and sector plate as a scenic brake.  

 

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The storage and sector plate 

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The Dapol turntable would not turn very freely, so I decided to get four roller bearings for the wheels that run on the rail,  and a thrush bearing for the centre.

 

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This thrush bearing has 5mm inside diameter and 10mm outer and it is in three parts.

I had to cut out the raised bit in the centre to take up the thickness of the bearing. I then glued one half to the centre of the base, and the ball race goes on top. The brass plates are for the table pick up. 

 

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The other part is glued on the under side of the table. The two wires are for the table pick ups.

 

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The four roller bearings is to replace the plastic wheels that run on the rail. They measure 2.5mm inside diameter 8mm outside and the thickness is 2.8mm. I had to drill out the axle holes to 2.5mm and file out the brackets to the width of 3mm, I used 2.5mm brass rod for the axles cut to length.      

 

 

Edited by RAY NORWOOD
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I have been busy building the PCB for the stepper motor turntable control from MERG. Today I have been fixing the PCB under the baseboard along with the gear box and stepper motor, and wiring it all in.

 

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Here is PCB fixed in place and wired up.

 

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The gear box and the stepper motor ready for the table shaft to come through. the motor will be screwed to the two blocks of wood when glue is dry.

 

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The motor and gear box screwed in place.

 

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Motor wired to the BCB.

 

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The wiring from the PCB to the D connecter to connect to the control panel.

 

 

This is a film of the table going round on it test run.

 

The next job with the turntable is to paint it and then to programme it to stop at the shed roads.

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  • 2 weeks later...

I have been having a  problems with the turntable. I put some roller bearings on the Dapol turntable to take out any friction the turntable may have, It done a to good a job,as It was so free running that when a loco goes on or off the table moves, it didn't help that the gear box has a bit of backlash as well. To put a bit of friction back I drilled a 8mm hole in a 3mm think by 100mm x 10mm ply then cut down the length through the hole, so there is half of the hole to go around the main shaft, I then drilled a hole at one end for a screw to fit on the back of the motor and gear box mounting plate so that the half hole goes around the shaft, I also made a slot at the other end to take an elastic band to pull the lever against the shaft. I didn't make it to tight as that will make the stepper motor out of sunk and would not line up to the road you set it to go to.  

 

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Here is a link to a youtube video of the turntable working. 

https://www.youtube.com/watch?v=rtxCEk_gU4o&feature=player_detailpage

 

The other day I glued the back scene to the back boards. I glue I used was 3ms photo mount spray. sprayed onto the back boards then rolled the back scene on  making sure of getting out all of the air bubbles. When it is dry I rubbed the top with sand paper along the edge of the back board to get the waste off.

 

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I forgotten to say that in the corners of the back boards I used the tube that the back scene came in, I cut it into four 1/4 round sections and glue the 1/4s into the corners so there is no sharp corners on the inside.   

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