GWR Broad Gauge bogie Class

[David Bigcheeseplant]

As I have been working on the model of High Wycombe in 1854-64 I thought it would look better with some locomotives and rolling stock, so I have started to draw up the 4-4-0 GWR bogie class saddle tank locomotives as there were a number of the first batch allocated to Wycombe. These locos used the boiler as a structural member with the frames only from the front of the driving wheel to the rear buffer beam the front bogie was attached to the underside of the boiler.

 

As can be seen I have drawn the front bogie and driving wheels.

Edited April 7, 2022 by David Bigcheeseplant

[David Bigcheeseplant]

A bit more work, its starting to look like a loco now.

[David Bigcheeseplant]

The loco in with some railway background, its still at a basic form, but starting to look more like it should, buffers will be next then rivets etc.

[David Bigcheeseplant]

I am now starting to add details, bolts and rivets take a while. I may turn this in to a kit but will do a 3d print first to get the feel.

 

[David Bigcheeseplant]

Some more work on the loco, I thought I would pop the file in the 3D printer and see how it came out. I did hold out too much hope as I drew it all in scale dimensions, and printing things at 0.3mm thickness and below was asking for trouble but it came out better than I thought, I will probably go for etched bits on the final design although the smokebox and saddle tank came out rather nice, including some very fine rivet detail.

 

David

[Dana Ashdown]

That does looks good!

 

How will you power the wheels?

 

 

Dana

[David Bigcheeseplant]

This is just a test print to get an idea of size etc, I will do a etched chassis with a proper gearbox. 

[Craigw]

I have been watching this with interest (lots of interest!). If you decide to do a kit please put me down for one.

 

 

Regards,

 

Craig W

[David Bigcheeseplant]

I printed off another body I thickened up some parts and gave it a coat of grey primer, its come out ok and the rivet detail is quite fine but looks ok.

David

[Scorpio7uk]

Can I just check - what scale is this?

 

Jeff

[David Bigcheeseplant]

4mm scale

 

[David Bigcheeseplant]

I need to print finer to get rid if the layers as well as thicken up some parts which are still stupid thin.

[David Bigcheeseplant]

A bit more work on the renders, I have started to add pipework etc, there seems to be an injector on the left hand side of the firebox but not the right but there is a feed on both sides at the front of the saddle tank.

[Bulwell Hall]

Hi David

 

This is great to see!  I look forward to seeing further progress and a 4mm scale model of both engine and station would be absolutely delightful.

 

You may find the attached of interest.  It is a painting by Sean Bolan of a 'Bogie' class at Bridport around 1860.  'Hesiod' was recorded as working on the Bridport branch at the time so it could be her!  Sorry about the reflections caused by  the glass.

 

Keep up the good work!

 

Gerry

[David Bigcheeseplant]

Hi Gerry

I love Sean Bolan's paintings and used them as a guide for my model, Here is the loco in my model of Wycombe, Hesiod was also allocated to Wycombe in July 1859. Differences I have done over Sean's engine is that he has painted toolbox and sandbox in brown while I have gone for green, although I can simply change it, what do you think is correct?

David     

Edited April 25, 2022 by David Bigcheeseplant

[David Bigcheeseplant]

I have adjusted the angle to match more Sean painting, also polished up the smokebox  door.

[MikeOxon]

I think toolboxes were usually green.  It amuses me that we always try to achieve a perfect finish on our models but photographs show that those early iron-built engines had surfaces that were far from smooth - see, for example, the photo you posted on April 7th and I've seen much rougher examples in other photos.  Of course, it appeals to me because I don't get 'perfect' surfaces from my FDM printer!

 

Mike