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Hunslet Engine Works in 7mm Scale


Andy Ross
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Thank you for all the positive comments over the last week.  I am glad i took the time to put the original post up. 

Hopefully it won't be too long before we get back out to exhibitions with my display. 

 

I will continue to add to this for those who are interested. 

 

At the moment I am designing the door mechanism and the next will be the welding manipulator - the photo below is of this with one of the BSC Bo - Bo's mounted in it.   

Manipulator_1.jpg.79c65d493f828f59058198b1ceca99c1.jpg

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IMG_2415.JPG.09ad9c36270a0562fc54b20b08267ea6.JPG

 

For those interested in Irish Narrow Gauge this is how far I have got with the later Bord na Móna locos. The cab roof needed re drawing as it does not fit as it should. I have also redrawn the frame so I can fit wheel sets for a working one on test. The etch drawings are now redrawn but I am waiting to finish drawings for the main erecting shop doors and the brackets etc for the mechanism. I have bought some liner drives of Ebay and it looks like these might work. D69.jpg.f96cdf86f0b0e98a51f758f6fc20a197.jpg How it will look when finished and on test. 

Edited by Trams and Locos
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Progress this week - I have gone as far as I can designing the door mechanism. I have done a drawing of a temporary baseboard so I can assemble the lead screws and guides I have bought off eBay that arrived last week. A friend is making the board this week so initial assembly can start. This will be be done with bits of card and plastic before I commit to etches. 

 

Erecting shop Side Door Layout-Model.pdf

 

The drawing shows the door layout and the photo shows the real doors.Test_Track_-_Hudswell_3.jpg.5010b057e37727b23ff35e00a10f65ab.jpg

 

The plan it to also assemble all the structure on this board and  then transfer onto the real board when made. 

 

All the parts for the structure have already been made. Including the main door beams and columns. 

 

 

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IMG_1026.jpg.95964c56382e2102f40d5cd58262737c.jpgIMG_1025.jpg.0588b156b07944060d652337f5ba9a3c.jpg

 

This is the test board for the door mechanisms.  8mm lead screws and slides so;d as kit of parts including bearings and bearing blocks from Ebay sold as 3d printer drives. The plastic parts will be replaced with etched versions once the design is sorted.

The doors will come down through the slots in the boards and one will slide back before the other. I am also going to assemble all the structure for this section on this board and solder it all up. It will then be transferred to the proper board when built.

 

 

 

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I have started the assembly of the steel-work structure for the doors.

 

This will stay together and will be transferred to the main layout board when it is built. 

 

I have also attached a photo showing the real structure. Apart from the spacing of the columns and the height of the crane track I have had to guestimate all the other dimensions for the beams etc. 3

 

 

 

1842804865_DoorSteelwork1.jpg.d45efcd5aebed7e5eec8fbf36411470b.jpg766407368_DoorSteelwork2.jpg.823404ae55de6d431391c2bd68ed13fd.jpg

HER1407_glass plate 1a.jpg

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54 minutes ago, Trams and Locos said:

As promised photo of boiler being tested - please don't ask me what it is for as I don't know. 

 

102889916_HEBoiler3902b.jpg.063fcbc6ccb2973229d36976692da209.jpg

If the sign "BOILER 3902a" (top right) is related to the boiler, then works number 3902 of 1971 was the very last steam locomotive to be built in Britain for an ordinary commercial concern, a sugar plantation railway in Indonesia. Named Trangkil No 4, it was a 750 mm gauge 0-4-0ST Kerr Stuart "Brazil" class (the same as Premier, Leader & Melior at Sittingbourne and Kemsley, and Excelsior at Whipsnade). The locomotive survives and is now at Statfold Barn, reguaged to 1'11½" gauge.

 

Of course, it could be merely a conicidence, but it looks right.

 

Here is a link to a picture of the locomotive in use in Indonesia: https://www.world-railways.co.uk/general-photo-231

 

Here's one of it at Statfold: http://sambrandist.blogspot.com/2018/10/driving-trangkil-for-statfolds-first.html

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So the door assembly may need to be paused as the latest etches have arrived today. 

 

These include the reworked Bord na Móna cab and drivers seat assembly. The new frame drawing that will accept wheel sets and motor for the complete loco to go on test. 

 

IMG_1029.jpg.d2d04ad74fb531a5c410d6c42705f7c4.jpg

 

 

 

IMG_1030.jpg.6e48205442095120f42644967a39f9bc.jpg

 

There are also reworked etches for the stillages and benches.

 

IMG_2389a.jpg.db9ad7d97dd9fda782daa1d8d72026f1.jpg

 

These are the prototypes - although they went together ok there were a couple of slots and tabs that did not work as they should but the new ones should be right now .

Edited by Trams and Locos
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On 17/02/2021 at 17:26, Trams and Locos said:

I use PPD in Scotland. Several of us in the Leeds club use them.

 

see https://ppdltd.com

 

They are very helpful and have a reasonable turn around time.  Less tha 3 weeks for this batch.  
 

Andy 

 

Thanks Andy! The last time I had any etches done (15 years ago if it's a day) I used PhotoEtch in the Midlands.  I've got some drawings for some industrial wagons nearing completion, so I'll give PPD a try.

 

Cheers

 

Alastair

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IMG_1040.jpg.4c4d6ec6a3dfb3a237532cd68faa50ea.jpg

 

So having previously made frames for the Bord na Móna locomotive for the loco in build I also need to be able to have a fully working version to run up and down the test track.  So I re drew it with the chevrons and axle boxes in place. The axle boxes will take a 1/8 axle.

 

 

 IMG_1042.jpg.a559a7a010bc27c683c1e2679f9588e6.jpg

This is the etch for the combined buffer and drawgear 

 

IMG_1044a.jpg.7fca40d8e8c632ffcea421e19372dc8f.jpg

 

This is it built up and fitted to the frame. I did build two up but while soldering the first one onto the frame I left the big Iron on the back of the frames for too long and it all moved. I won't be doing that again. 

 

I have also built up the fuel tank that sits in the frames.

 

IMG_1046a.jpg.032146f33be1d8deae7867fb908b5c91.jpg

 

 

 

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IMG_1050.jpg.e02c4c6db310b790950c2df2a82af816.jpg

 

So as mentioned above i got the original drawing wrong for the cab roof. The revised drawing has worked a lot better and is now soldered on. 

 

The gutters are now separate and they are still tricky to fold so  may change them for the future. 

 

 

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As well as the Locos for Bord na Móna there were two built for Shotton Steel Works narrow gauge network. 

 

It will not be a big job to alter the drawings for these, they are a bit longer. The fuel tank is re positioned to be in front of the cab and a gas conditioner fitted in the space at the front of the frames. 

 

The cab and the drivers seat and controls were all the same as the Bode na Mona locos. 

 

The only other difference was the track gauge which was 2'6" as against 3'.  

 

962900336_Shotton1.jpg.f5e016b35cb5fc68db807da88e23d0e2.jpg

Edited by Trams and Locos
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  • Andy Ross changed the title to Hunslet Engine Works in 7mm Scale
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I have changed the name form Hunslet Engine Works in O Gauge to Hunslet Engine Works in 7mm Scale on the recommendation of a fellow member of the Leeds Club as he rightly pointed out that not all the locos are O Gauge as can be seen by the ones above.  

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If anyone is interested I am looking to see what the interest might be if I do the Bord na Móna loco as a kit. 

 

I have started a new topic for this, if you are please go to https://www.rmweb.co.uk/community/index.php?/topic/163029-interest-in-bord-na-móna-locomotive

 

Andy R

 

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Last weekend I managed to draw my first part in 3D to be hopefully 3D printed. 

 

See below the air filter housing for the Bord na Móna loco. 

 

image.png.96fafc60eccfbe121f38a72dc9346fa1.png

 

I don't have a 3D printer (yet) but I have a friend (innocentman) that does who offered to give them a go. 

 

Today he dropped them off. 

 

So I have dropped one on to the trial assemble and it looks just the part. 

 

2003204102_IMG_1069a.jpg.51be93b567183db9aad38765fbce1345.jpg

 

 

125956120_IMG_1069b.jpg.bab7ded7f79a2e4c5ff46628195e9fdf.jpg

 

So i now need to look at the Exhaust silencer and head lights

 

This will make the chances of making this into a kit even better but still a long way to go.  

Edited by Trams and Locos
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So the other new etches I have are for the benches that run down both sides of the erecting shop. 

 

I managed to track down an original bench that was liberated from the site which I used to measure up and produce a drawing. 

 

IMG_0428.jpg.2d466a1321efd6fce1026aa596628fc8.jpg     IMG_0429.jpg.7b72a6184705450042d486eb54e3913b.jpg

 

From the drawings i produced etches for three different variants you would find on site. 

 

IMG_1071.jpg.b059763abc8c223f88bfbff7458635f8.jpg

 

The etches cover two and four draw versions plus I have done one with no draws for the areas were there we cupboards under the benches. 

 

IMG_1073.jpg.ea2a29d474fe5a3a4f16b6108736f453.jpg      IMG_1077.jpg.70d4a8c9121acbf426ab788fddfc7657.jpg

 

These need painting and then wooden tops will need to be fitted. The draws will also need to be locked in as they work at the moment. 

 

There will be a lot to make. 

 

Andy 

 

 

 

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