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  #21  
Old 06-24-2022, 10:46 AM
Siwi Siwi is offline
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This week I made all the struts for the tailplane. Compared to the photos, two of the lower struts should be further back, but I really don't mind this small difference. I made the struts stiffer with varnish, and used several layers of glue to hold them to the elevators and rudders. (no idea why I stated before that 'the London has a single large elevator' when it clearly has two...)



Then moved on to the lower wings. These have some formers, which slot over the spars attached to the fuselage from the first stage of the build. The wings themselves fit together very nicely, and I not only did the fabric bumps with a pen again but used sufficient double-sided tape to hold the skins to the formers and keep a nice shape. Draco's jigs made sure the dihedral was perfect and even across both sides. The only issue was a gap between the upper wing surface and fuselage - it has a curve which does not match the slight angle the two fuselage sections have at this join. I just hide it by adding layers of varnish to fill the gap. Now the aircraft is starting to look like, well, an aircraft!


Next stage will be to make the engines. This must be done before the struts can be added as they support two of them.
Attached Thumbnails
Saro London - 1:72-img_20220622_094505.jpg   Saro London - 1:72-img_20220622_094543.jpg   Saro London - 1:72-img_20220622_100251.jpg   Saro London - 1:72-img_20220624_124126.jpg   Saro London - 1:72-img_20220624_124236.jpg  

Saro London - 1:72-img_20220624_124145.jpg   Saro London - 1:72-img_20220624_124116.jpg   Saro London - 1:72-img_20220624_124307.jpg   Saro London - 1:72-img_20220624_124327.jpg  
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  #22  
Old 06-24-2022, 11:27 AM
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Draco Draco is offline
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Siwi, thanks again for beta-testing. That's why it's done. When I did my alpha-build I didn't see this problem, but checking now the model I found it was really there, just that as I said, I didn't see it.

I'm correcting the drawings and the correction will be released to you and all my other beta-testers.

Thanks again for finding the details! See this video if you want to know how the original designers fell when the beta-testers do their work:
Devs watching QA test the product - YouTube
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  #23  
Old 06-25-2022, 09:02 PM
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yankeekilo yankeekilo is offline
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this is a good build!!
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  #24  
Old 06-26-2022, 11:29 AM
Siwi Siwi is offline
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Thinking ahead a bit, I was wondering if anyone had some information on how much weathering would be realistic for this model? Specifically, how often would such aircraft have been cleaned of the kinds of stuff that would build up on the hull (algae, dirt, the kind of things that boats get on the hull) and in fact how long these would be sitting in the water between flights. Did they tend to get pulled out and parked on land most of the time as a precaution against rough seas? I've seen some pictures of Sunderlands in a pretty grubby state, but that was during wartime.
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  #25  
Old 06-26-2022, 12:16 PM
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Draco Draco is offline
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Quote:
Originally Posted by Siwi View Post
Thinking ahead a bit, I was wondering if anyone had some information on how much weathering would be realistic for this model? Specifically, how often would such aircraft have been cleaned of the kinds of stuff that would build up on the hull (algae, dirt, the kind of things that boats get on the hull) and in fact how long these would be sitting in the water between flights. Did they tend to get pulled out and parked on land most of the time as a precaution against rough seas? I've seen some pictures of Sunderlands in a pretty grubby state, but that was during wartime.
All the pictures of the London that I have show them perfectly clean, even the ones in the water. The only picture with a dirty hull has some strange equipment between the wings and the engines are covered, sugesting it is in long storage.

About the time on land, in peace time I would keep them inside the hangar except the ones being readied to fly or just arrived. I don't thing there was a "rapid alert" team for this planes, being anti-ship patrol.
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Saro London - 1:72-fin-463-.jpg   Saro London - 1:72-fin-469-.jpg  
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  #26  
Old 07-06-2022, 02:09 AM
Siwi Siwi is offline
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Meant to post last weekend but had login troubles along with others.


Anyway, I didn't get a huge amount of progress because of real life work, but I did assemble the engine nacelles and make a start on the front 'rings'. Additionally I went over and retouched the blue and red on the RAF roundals where the corregations had been glued. Also glued into place the lower hull after a minor revision to the shape by the designer. I realised there was little point adding any interior details here since it would be literally invisible through the tiny windows.


The engine nacelles have formers for the rounded shape in all dimensions. Care must be taken that the curve matches that of the lower wing and with the thin edge this shape requires.


After that I made a start on the engines. The Bristol 'Peggy' was by all accounts a reliable and for the time powerful engine that was fitted to dozens of British types in this pre- and early-war period. Draco supplies parts for both a simple representation with flat panels printed with cylinders, or a more complex version with individual cylinders. Guess which one I'm doing? My method for small cylinders is to roll paper around a cocktail stick (those erstwhile friends to the modeller...) and carefully cut at exactly the right stage of the roll that it matches the diameter of the surface part. This ensures there is no lip of overlapping paper. I acquired some new metallic pens in silver, bronze and black which are excellent for a model like this.
Attached Thumbnails
Saro London - 1:72-img_20220701_190700.jpg   Saro London - 1:72-img_20220701_190719.jpg   Saro London - 1:72-img_20220701_190817.jpg   Saro London - 1:72-img_20220701_190552.jpg   Saro London - 1:72-img_20220701_194030.jpg  

Saro London - 1:72-img_20220702_105123.jpg   Saro London - 1:72-img_20220702_105228.jpg   Saro London - 1:72-img_20220703_164202.jpg   Saro London - 1:72-img_20220703_174813.jpg   Saro London - 1:72-img_20220703_175402.jpg  

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  #27  
Old 07-07-2022, 06:58 AM
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gomidefilho gomidefilho is offline
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An impressive construction, considering the amount of techniques involved, some not common in paper modeling nowadays. Although I think considering the state of modifications and enhancements to the base model your build has gone from being a simple test assembly to a highly sophisticated project.

I particularly don't like metallic pens for use on large surfaces because in the coverage they end up "scratching" in the overlapping of layers. Since you are using plastic modeling techniques, I suggest spraying or airbrushing a layer of acrylic metallic paint (if the paint that the pens you are using allows), the ideal is to test it before applying it to the model.

But you are really demonstrating that a printed model can be transformed into an impressive replica.
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  #28  
Old 07-07-2022, 09:10 AM
Siwi Siwi is offline
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Thanks for that, Perecles. I think Draco understood quite early on that I would be taking this build to an advanced level of detail, and he has encouraged that as he says his models are designed with modifications in mind. I do want my builds to approach the kind of realism that plastic models offer.



I have had the issue with the pens you describe where the layers overlap - this can be seen. I may attempt to cover this with a second coat. The only silver paint I currently possess has sparkly particles in it which look even worse, so I may get some Humbrol/Revell/Tamiya aluminium when time permits.



I've considered acquiring an airbrush on and off but it's a somewhat pricy bit of kit that I'm not sure I'd justify buying for the amount of use it would get. I would also be concerned about soaking and warping the paper. In any case, I would need to carefully mask off things like windows and insignia unless I was going to re-apply those from scratch.
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  #29  
Old 07-11-2022, 03:58 AM
Siwi Siwi is offline
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Finally some time to work at this model for a concentrated stretch. I did two things -first, one of the two Bristol Pegasus engines is complete, and second, built and attached the glazed canopy.



The radial engine is made from the cocktail stick segments I described earlier, with an additional ring at the top of each cylinder to represent the valve area. Bristol engines used a sleeve valve, which is why they have a more flat cylinder head than the 'horns' that appear on American types. From studying pictures, I learned that the exhaust ring goes in front of the cylinders and makes up the front fairing on the streamlined nacelles. This was made from a kit part that I attached to mountboard and carved away to get something like a doughnut shape. It's not a perfect fit but I couldn't get it much better. The cylinder heads were then glued to the back of this.


The canopy was nerve-rackingly fragile. I had used thin clear plastic rather than thicker acetate because it's a better scale thickness, but cutting the frame and having such thin bits of double-sided tape was difficult. I added some additional strips for an inside frame and then by a combination of tape, varnish and glue have somehow managed to make it hold its shape and conform to the fuselage. Because the model was designed for a solid canopy to be glued to the edges of the hull, it was necessary to cut away some additional material and have the canopy held by the minimum of area...



Parking this 1930s whale next to a pointy MiG is somewhat odd...
Attached Thumbnails
Saro London - 1:72-img_20220710_141459.jpg   Saro London - 1:72-img_20220710_142113.jpg   Saro London - 1:72-img_20220710_142206.jpg   Saro London - 1:72-img_20220710_142255.jpg   Saro London - 1:72-img_20220711_104222.jpg  

Saro London - 1:72-img_20220711_104232.jpg   Saro London - 1:72-img_20220711_104243.jpg   Saro London - 1:72-img_20220711_104314.jpg   Saro London - 1:72-img_20220711_104253.jpg   Saro London - 1:72-img_20220711_104322.jpg  

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  #30  
Old 07-11-2022, 06:55 PM
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whulsey whulsey is offline
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Been following with interest, some really nice work going on.
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