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Author Topic: Help with building a 323 and a 304 EMU  (Read 7310 times)

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Offline Cooper

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Re: Help with building a 323 and a 304 EMU
« Reply #45 on: January 31, 2018, 09:22:15 pm »
I’ll paint the underframes, and then the vinyls are all yours Jon! @PostModN66  :laughabovepost:

Offline PostModN66

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Re: Help with building a 323 and a 304 EMU
« Reply #46 on: February 16, 2018, 03:00:39 pm »
I sat down this morning intent on finishing the ends of the 323 but got completely sidetracked into fitting the couplings and test running.

Firstly, I realised I needed to shorten the chassis, because I had to shorten the body to fit the Electra vinyls.  I have done this before so it wasn't too scary.



The picture shows the chassis taken apart, the "slidey things" that hold the bogies in place have been moved one notch inboard, which is around 4mm each end.   By turning the slidey things around you can move it by 2mm, so you have quite fine adjustment of length.   I have chopped out the central 4mm of each drive shaft, then fitted a short length of plastikard tubing, drilled out to 1.5mm which is a good tight fit.

Here it is in situ on the chassis:



Getting these chassis back together is a fiddle; nearly always something drops out of alignment and you have to do it again.  There must be a clever way of doing it  ???

I then fitted Dummy Knuckle couplers to the power car, and realised I had to adjust the length of the coupler arm on the bogies of the trailers.  It is something of a miracle how this plastic brilliantly ignores Superglue; I ended up using Evo-Stick, and reinforcing with a wire staple.

A test run followed; I am quite pleased with the coupling distances.  I couldn't get @Cooper 's under frame detailing on for the power car; don't know what I'm doing wrong but I can't get it to fit  :worried:



Cheers Jon  :)
« Last Edit: February 16, 2018, 03:05:17 pm by PostModN66 »
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Offline Cooper

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Re: Help with building a 323 and a 304 EMU
« Reply #47 on: February 16, 2018, 03:39:21 pm »
@PostModN66 have you tried it both ways? It is ‘handed’. I’m sure we can get fit again as it definitely fitted ok before.  ;)

Offline greenlaneman

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Re: Help with building a 323 and a 304 EMU
« Reply #48 on: February 17, 2018, 01:07:35 pm »
Fitting all the bits to that type of split chassis with all the 'slidey bits' by using Tacky Wax to hold them in place on one side of the split chassis until the other side is in place - simples!
Homeopathic warfare - the smallest army wins!
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Offline PostModN66

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Re: Help with building a 323 and a 304 EMU
« Reply #49 on: February 18, 2018, 05:05:28 pm »
Today's task; making a representation of the 323 couplings.  I used a Dapol hook, cut down, and a complex structure of Plastikard with a bit of brass wire to represent the structure. and various bits of mechanism.  It took ages and was really fiddly....and I managed to take off a flake of the yellow paint @*&@£  >:(

It still looks a bit cartoonish, but quite honestly I can't think how to make it any better!



Really need to tidy those windscreen surrounds!

Cheers Jon  :)
“We must conduct research and then accept the results. If they don't stand up to experimentation, Buddha's own words must be rejected.” ― Dalai Lama XIV

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Offline robert shrives

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Re: Help with building a 323 and a 304 EMU
« Reply #50 on: February 18, 2018, 05:46:10 pm »
looking the part
Robert 

Offline PostModN66

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Re: Help with building a 323 and a 304 EMU
« Reply #51 on: February 24, 2018, 12:29:45 pm »
I have added the light clusters with tiny bits of plasticard and installed the LEDs for the headlights.   The unit will be uni-directional, headlights in the leading car and tail lights in the trailing one; no return workings permitted!



The wiring you can see through the windscreen is temporary to test the headlights.   I plan to put a voltage regulator circuit in each trailer car, akin to the way I have done numerous flashing tail lights in goods wagons.

Hopefully this build is reaching a conclusion; I will be so glad to get it off my to-do list... :confused1:

Tail lights next.

Cheers Jon  :)
« Last Edit: February 24, 2018, 01:05:47 pm by PostModN66 »
“We must conduct research and then accept the results. If they don't stand up to experimentation, Buddha's own words must be rejected.” ― Dalai Lama XIV

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Offline Cooper

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Re: Help with building a 323 and a 304 EMU
« Reply #52 on: February 24, 2018, 01:00:29 pm »
That is looking really good!  :)

Offline PostModN66

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Re: Help with building a 323 and a 304 EMU
« Reply #53 on: February 27, 2018, 09:17:58 am »
So....made up two voltage regulator circuits (actually four, two prototypes rejected) and spent about a day (really) working out how to make the pickups.  Frankly in retrospect I would have just used button cells, but finally got the lights working  :confused1:



Net result....headlights too bright, tail lights too dim, so I need to change some resistors.  There is a lot of light spillage from the headlights which I hope can be cured with acrylic paint.

Cheers Jon  :)
“We must conduct research and then accept the results. If they don't stand up to experimentation, Buddha's own words must be rejected.” ― Dalai Lama XIV

My Postmodern Image Layouts

Lofthole http://www.ngaugeforum.co.uk/SMFN/index.php?topic=14792.msg147178#msg147178

Deansmoor http://www.ngaugeforum.co.uk/SMFN/index.php?topic=14741.msg146381#msg146381

 

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