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Class 20 in G


johnteal

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Over the weekend I was considering what I could fill my evenings with this week. Mrs RJR is organising a youth camp which are eldest 2 are on and the youngest has gone on Holiday with here friends family, so I am " Home Alone"

 

Any way I decided I would have a go at a class 20 as I could cheat and use the bogie units off the 25 to give me a head start. After sourcing some suitable plans on Sunday evening and some plasticard on the way home mid after noon today I had everything I needed :)

 

Here we go then. The base plate from 2 layers of 60thou laminated together

 

SDC17363.jpg

 

After cutting several bulkhead and the cab ends ...

 

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Next step some panels, the ones that will be louvred were a little fiddly

 

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Finally, buffer beams and a roof, this time having tried plastic strips and balsa on the last 2 builds, so I went for rolled plastic this time.

 

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At the moment I have only trimmed the roof back on the cab it will need trimming and a rad sanding along the roof main body line.

 

So far I estimate I have spent about 5hrs on it today and an outlay of about £7

 

John

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The 25 is still fine, the body just drops onto pins on the bogies so I can use either the 25 or 20 now, In fact the 25 looks quite comical, its sat in the station on "blocks"

 

I can imagine pointing man saying "told you not to leave it there ! Turn your back and the wheels have gone "

 

 

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A days work.... lummy blink.gif That is quick working. Wish I had the ability to work that quickly. Looking fantastic as always.

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Wow that's incredible progress John - awesome! I wonder if the cab roof shape is quite right? In the end on photos the curve looks a little flat, like it should be higher in the middle (or lower at the sides) - is that a trick of the camera?

Are you going to scratchbuild each set of lourvres for the doors?! That's commitment!

 

I look forward to seeing this progress (at speed) as usual :)

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Looks great - and with the paint on the 25 barely dry too :) How do you form the tumblehomes? They look really consistent, but there doesn't seem to be much internal support from your overhead view.

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I wonder if the cab roof shape is quite right? In the end on photos the curve looks a little flat, like it should be higher in the middle (or lower at the sides) - is that a trick of the camera?

Are you going to scratchbuild each set of lourvres for the doors?!

 

 

I think the roof line at the "flat end" of the loco is pretty close to the drawings I have, in fact I used a copy of the drawing to make a template. I did notice however looking at the OO Bachmann 20 that has very distinct flats on either side of the cab roof, that make the shape much more "peaked" in the centre, so either my drawings are wrong or Bachmann have used a different set ?

 

Yes at the moment I plan on scratch building the louvers !

 

John

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where did you find the plans for the loco?

 

They are from a book ...

 

Marsden and Fenns 'British Rail Main Line Diesel Locomotives'

John

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How do you form the tumblehomes? They look really consistent, but there doesn't seem to be much internal support from your overhead view.

 

You'll have to excuse my ignorance and lack of technical knowledge, not sure what the tumblehomes are huh.gif Internally there are the 60 thou bulkheads, and the side walls are stiffened along the top with a second 60thou along the top edge, this thickening ensures when the side wall to roof rad is sanded in there is meat behind.

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