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AA3 Toad conversion to P4


ullypug

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I was doing a demo at the recent Railwells show and was pleased that I managed to do virtually no modelling. Always the sign of a successful 'demo' weekend.
I did get as far as dismantling an Oxford models AA3 ex GW Toad in BR livery.
Several people pointed out the errors in the model (apart from the chassis being supplied in the wrong scale as the wheels are too close together obviously), so I didn't do much more than take it apart and compensate one axle with a low profile MJT unit. The axles are an odd length (about 27mm) so the non compensated end had 2 top hat bearings shoved into the back of the axle boxes to take up the difference (technical stuff this) and it runs ok.
The body comes apart after a fashion and the buffers pull out (or at least they're supposed to. One end did, the other stuck fast. The end lamp irons are metal and pull out too.
Having had a good look at things I've since set about correcting the bodywork errors namely:
1. Plating over the ends with 5 thou.
2. Cutting out and re-setting the non-veranda end windows one plank higher, using Evergreen strip to make the frame.
3. Blanking over the central window to the above with 5 thou and forming individual planks from 10 x 40 thou.
4. Swapping the sand boxes from the veranda and non-veranda ends.
5. Removing the central chimney and replacing with brass, offset accordingly.
6. Adding some transfers (Railtec) more suitable for Cheddar. I've absolutely no idea whether there was ever one at Westbury and I'm not bothered if there wasn't.
7. Filling in the central cut out to the 6 wheel footboard.

 

Photos show the current state of affairs, with the solvent hardening off. Still to complete are:
8. Final detailing to non-veranda end window frame and sanding down the planking to the central window.
9. Fit couplings
10. Re-fit lamp irons
11. Add rivet detail to plated ends
12. Reassemble chassis with brake gear and fit body.
13. Replace one pair of buffers.
14. Paint as necessary

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  • RMweb Gold

Nice work Andrew . We owe Oxford a lot: If they didn't supply us with such error-ridden models, there would be no pleasant modelling sessions to correct them ;-)

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  • RMweb Gold

Interesting, I hadn’t realised quite how bad these were.  I

have an AA3 (Kingsbridge) and an AA1 (Bristol West) to do for which the new brandings arrived from Railtec last week.   I knew about the extra window but had completely missed the fact that they didn’t plate the ends!  A quick 5 min project for tonight is now taking a fair bit longer I think

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  • RMweb Premium

There is an article by Gerry Beale in Model Railway Journal No. 268 (2019) detailing his corrections and improvements to the AA3. I think you've covered much the same ground. One thing he did that isn't on your list was to replace the handrails as, he says, the style with the L-shaped brackets came in in the 1940s on 20 ton vans. He also made replacement footboards with higher backboards, more correct, he says, for vans in later years. I'm no expert on Great Western brake vans but I do have an Oxford AA3 that I plan to put into c. 1902 condition, so I've found your post here and his article very helpful.

Edited by Compound2632
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It’s kind of weird how this has cropped up as I posted it back in 2018! I remember discussing it with Gerry at Railwells and yes he took things a little further than I did for his article.

Good luck if you are attempting this. It is a bit of a faff but worth it in the end. 

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@The Fatadder had bumped this blog post - I'm afraid I hadn't spotted that the original post was from a couple of years ago but then so is my purchase of the Oxford model! But while I'm here, may I just air my thoughts on the additional things I need to do / take into account for c. 1902 condition, having looked at gwr.org.uk, especially the photo of Crewe-allocated AA3 No. 17539?

  • the windows at the non-verandah end should be the earlier type with a central horizontal transom
  • the handrails should be the early type - pre-gas pipe - with the lower horizontal rails only at the ends
  • the sandbox fillers should be out of sight underneath the transverse wooden bench? - i.e. no rectangular metal boxes? This is the bit I'm least clear on. The photo of No. 17539 doesn't show a transverse bench, just what I interpret as a seat in the corner.
Edited by Compound2632
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2 hours ago, Compound2632 said:

air my thoughts on the additional things I need to do / take into account for c. 1902 condition

 

I am sure you know this but there would have been none of the plating and the handrails were not painted white pre WW1

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  • RMweb Gold

thanks for the Feedback, very useful to see what others have done before starting.    One thing that’s puzzling me, once the 2screws are removed how do you remove the body?

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9 hours ago, Brassey said:

I am sure you know this but there would have been none of the plating and the handrails were not painted white pre WW1

 

I've got the "early" version which is timbered all round. Having just looked at it again, it has the early style of handrails already (so much Oxford got right, so much wrong!) but white as it's in post-1925 livery. For pre-1904 livery, my understanding is that brake vans were a very dark grey, darker than the post-1904 (or what date you favour) wagon grey.

 

48 minutes ago, The Fatadder said:

thanks for the Feedback, very useful to see what others have done before starting.    One thing that’s puzzling me, once the 2screws are removed how do you remove the body?

 

Gerry Beal says push the buffers out from behind the headstocks. I confess I've yet to try this myself.

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12 hours ago, Compound2632 said:

the sandbox fillers should be out of sight underneath the transverse wooden bench?

 

Yes I think so. The seats are individual, in the corners, on the early AA3s, and only later became the standard 'cross-bench'.

 

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