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Nick Dunhill's Workbench - Pair of EM2s


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Final furlong this week.  All my 3D printed parts turned up, well almost, and it was on with the bogie mods and details

 

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Mick printed some end beams that fitted perfectly over my modified side frames.  I added the brake cylinders and some air pipes.

 

The next bit of the job was to fit up all the brake shoes and rigging.  Mick made some amazing prints for the shoes and hangers.  I scratchbuilt some spring planks with their supports for the rigging.  I decided that all the brake system should be soldered/glued to these supports.  I scratched my head for a while and made a simple jig to support all the cross beams and allow the brass pull rods to be fitted up.

 

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I think that the brake rigging solves the dangly Delrin chain issue....luckily!

 

So here it is, almost finished.  I need some air tanks which hang on the inner ends of the bogies and a large auxilliary air (or maybe it's a water tank) between the battery boxes.  They've been printed and are in the post as I type.  it'll be finished by monday lunch.  

 

The total time to build both locos was around 450 hours.  This was quite a lot longer than I had imagined.  it takes about the same time to build (say) an F7 large tender loco.  The pantographs took 3 weeks to make (I work 40 hr weeks) as did the bogies.

 

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I took quite a lot of pictures of one of the spare EM2 bogies here; https://www.flickr.com/photos/144381574@N05/albums/72177720302398293

and more pics of the model here; https://www.flickr.com/photos/144381574@N05/

Edited by nickd
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On 12/10/2022 at 21:34, Ramrig said:

I’ll show you something tomorrow night that might help explain. 


sorry, family matters got in the way. I’ll post the pictures tomorrow. 
 

The locos look excellent by the way. 

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On 12/10/2022 at 21:34, Ramrig said:

I’ll show you something tomorrow night that might help explain. 

 

Better late than never

 

Here are a set of unrestored EM1/class 76 air horns. Still covered in genuine Woodhead Grot. As you can see from the images both horns ae the same. on the reverse they were connected via a 'T' joint to a single pipe through the cab roof.

When 27000 was repatriated back in 1986 one of my tasks at the time was to get replacement air horn brackets made for both cab roofs. The society had a collection of horns gathered from the scrap yard when the class 76's met there end.

 

The two in the picture still attached to the badly corroded back plate used to have the connections on the rear, (I think they may now be on the roof of Electra) Some years ago I tested these on an air line at work. These two worked and brought out a fair few people out wondering where the loco was. (I was nowhere near a railway line at the time) They produced a single tone sound that was also very loud!! From the drawings in the societies possession both classes carried identical horn arrangements.

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  • 7 months later...
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I did make the trip to Barnsley today and probably spent more time looking at this loco and the NB Atlantic than anything else.

 

They are both lovely models and truly inspirational.

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  • 5 months later...

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