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69843's CAD/3D fiddlings


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It must be remembered that £46 doesn't cover such items as the wheels, handrail wire/knobs, buffers, motor/gearbox or coupling/connecting rods (yet...), but I am trying to keep a balance between detail, cost to manufacture and what people would be prepared to pay for something like this.

Another version will be prepared at a later point with a choice in fittings, to allow a more individual variant of the locomotive to be made by modellers.

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The most important feature, the smokebox door, has been completed. The hinge is actually in two parts: the hinge itself on the smokebox front, and the straps on the door. This is done to simplify locating the door in the correct position.

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Edited by 69843
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Final update for a bit.

The locomotive now has brake blocks. These are designed to plug into two holes on the frame, sitting the correct distance away from the wheels (angled at 4*, so that they are off), and to fit the wheels that the kit is designed for straight up (Alan Gibson 4839G-Industrial Garratt. These are the closest readily-obtainable wheels to being the right size and design). The rods/crossheads and cylinders have also had a small bit of tweaking done to them.

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And the locomotive now also has handrail holes fitted to it. These are designed to take Markits handrail knobs, with a .8W x 1.5L shaft.

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Well, the W6 is getting closer and closer.....

The motion bracket and cab roof have been completed. The backhead has also had work started on it, although good clear photos are hard to come by. As it may be noted, the cab roof has a notch built in to represent the fact that most W6 cab roofs were split into two sections. This is also able to be fitted either way, with the raised section on the left or the right.

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Another model that is well underway is Shap Stuart B/N 4085, better known as 'Dunrobin'. This is being done with a hand from the Beamish Transport Museum, who are well into restoring the real locomotive.  I hope to be able to do coach 58A at some point in the future, and maybe even get to 57A one day.

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Edited by 69843
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As has been mentioned earlier, Zane and myself are doing a joint 3D project, the frames for the GWR 8 wheel tender. He had already done the basic outline of the frames and I was tasked with doing the axle-boxes and some other details. I will continue my side of it on this thread to keep it all together. So far, I have done 1 of these axle-boxes and will be copying it for the other 7:

 

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This is done from plans of the 8 wheel tender and other ones which show the details better.

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Tom, it is an excellent job on the axleboxes for the 8-wheeler, and I certainly could not have reached that level of detail without your input. Thankyou.

 

Right, seeing as I don't have much spare time this weekend, I knocked up the distinctive Peckett buffers yesterday:

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  • 2 weeks later...

super work have you thought of doing the buffers as a two part print which would allow for them to be sprung by the buyer?

To be honest-no!

 

Will look into that. More likely a phase 2 thing, once the initial test prints have been received and before going on general release.

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super work have you thought of doing the buffers as a two part print which would allow for them to be sprung by the buyer?

Well, I had intended to leave it until later, but......

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These are based off of the Markits type, with the only major difference being no screw on/off end cap, meaning that once the end cap is fixed on, the only way to remove it would be to unglue it. Springs will need to be sourced, and I will put it in the instructions once I find a suitable part.

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Hello :)

 

That looks vaguely familiar to me...

 

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Although mine was drawn for 2mm Scale / N Gauge.

 

Top work though...

 

Julia :)

That looks excellent Julia! I can say for certain that it is done in a slightly(!) better programme than Sketchup, and I know someone with an N gauge layout that could be interested in that.

 

Although I don't know if the rivets were ever on the cabside beading?

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Well, some more finishing work has been done to the model, in the terms of motorising it.

 

There is now a small half cradle inside the boiler for a Mashima 10 series motor. The motor/gearbox combo for the model is set up for a Mashima 10 series motor with a High Level RoadRunner+ gearbox with a 54:1 ratio. The speeds vary between about 32-42mph scale depending on which motor is used, which allows a lot of control over speed (ideal while shunting). A small cutout in the boiler top also helps with the fit of the gearbox.

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Edit: Boiler bands now included

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Edited by 69843
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  • RMweb Gold

Ee by gum your not too bad with this etch a sketch malarkey. Unable to tell from the drawing will there be any room for a DCC chip. Keep up the great work chap.

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Here we are. This shows the inside of the boiler, fitted with a Mashima 1020, giving a bit of room above and in front of the motor, even with the door on.

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