Author Topic: Multi-seat 2026 GB - scratch built Admiralty Department AD 1 Navy Plane  (Read 1055 times)

Offline lone modeller

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Evening All,

Many thanks Rick, Nigel, Paul, Alexis and Enathan for the very kind comments - the help to keep me going when like Paul I sometimes lose motivation because things seem to take so long.

Painting and decorating of the Navy Plane has been almost completed - there will be more to do later as will become clear in this report. The colours of the original machine are not entirely clear as there is no authentic record that I can find. (The colours given by Chorozy Modelbud are not accurate for a number of reasons if the photographic sources that I am using are anything to go by). I have chosen PC 10 for the upper surfaces, fins, floats and nacelle - for this I used Revell acrylic Olive Drab (361) which is probably a little too green, but trying to mix in some chocolate brown and get a consistent shade was too fiddly for me! The undersurfaces are clear doped linen - a mix of acrylic white and Revell Beige (314). I have painted the booms in Revell tan (SM382  enamel), but I may change that to Olive Drab later as the wing and float struts were clearly also PC 10, not grey as suggested by Chorozy. The wing cockades were home printed, as was the number (9095) on the nacelle which can be clearly seen in photographs. (Although a serial number was assigned to this machine it is not on the rudders in the photos that I have access to: they were probably taken when the aircraft was completed and rolled out of the workshop and before delivery to the RNAS, so the serial may have been painted on at a later date. Chorozy supplies the serial their kit, but shows the fins as CDL - again the latter is not supported by the photographic evidence). The rudders were painted with enamels.





With the painting and decorating over I joined the main floats with two strips of 30 x 40 strip, and added the reinforcing plates on the tops of the floats, also from strip. A small indentation was filed into the plates after the cement had set. The assembly of the wings and fuselage needed some thought and planning - eventually I decided on the following procedure. I attached the fins/rudders to the underside of the horizontal tail surfaces and the two forward inner struts to the underside of the upper wing:



When the fin/rudders and struts were completely set I put drops of cement into the locating holes in the lower wing and superglue on to the bottoms of the fins and lowered the upper wing/boom assembly on to the lower wing/boom. I ensured that the wings were properly square with a simple jig:



When this assembly was dry I had a structure which could be handled with care while I inserted the outer wing struts which gave a much more robust structure:







The nacelle was attached to the lower wing via a single pillar to the rear spar and two splayed struts to the forward spar. I made the rear support from 30 thou rod and the struts from 30 x 40 strip which had been filed to aerofoil section. The rod was inserted into a hole on the nacelle and the struts into small depressions. When the cement had been allowed to set for approximately 20 minutes I lowered the nacelle on to the lower wing and was able to adjust the struts so that they fitted into the holes in the wing. While this was drying out I provided support to the nose of the nacelle with another jig:



The nacelle was held between the wings by four curved struts. These were cut from 30 x 40 thou strip which was filed to streamlined section and then carefully bent mid-section - I used dividers to measure the distance from the lower wing strut attachment point to the side of the fuselage where the bend in the strut was required. It was then a case of trial and error to get each of the 4 struts to fit between the wings and braced to the nacelle. I added the rear struts which were ahead of the booms at this stage:





The main float struts were attached to the lower wing by a pair of forward-rear V struts and a pair of V struts which were attached to centre section of the wing:



The main floats will be attached next via the existing strut arrangement and 4 more struts which were attached directly to the nacelle. A quick look at the photos and drawings show that one of this pair had an unusual configuration which will need some care to get right, but given the arrangement of the other struts on this model, that should come as no surprise.

Thanks for looking.

Stephen.

Offline DaddyO

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That's looking great Stephen  8)

Colour choices seem like a pretty good bet based on what else was around and the way stuff was usually painted, although nothing surprises me these days  ::) I think I would have probably gone for a similar scheme (the home printed decals look the part too)

The whole contraption looks terribly Heath Robinson, like so many aircraft of the period and I think you've done stirling work to get everything attached given the gawky nature of the original - Can't wait to see the floats and rigging added; it'll be another interesting model to add to your collection  :)

Paul
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Online Dirigible-Al

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I really like how this is looking.
Alan.
I heard that it all started when a bloke called Archie Duke shot an ostrich 'cause he was hungry!

Offline PJ Fisher

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So excited to watch this come to life. 

Offline lone modeller

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Many thanks gentlemen.

Paul: the Heath Robinson look is what originally attracted my attention to the type! In fact the more H R a type looks, the more likely I am to add it to my to do list!

Stephen.

Online NigelR

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Wow, that's some impressive engineering with those struts to support the nacelle, that would be way beyond my skills! I love your specialised "jig" as well..... ;)

Another very interesting model coming together really well.

Offline Richtrad

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I'm with Nigel. I can't even dream of having these kinds of skills. Great looking build.

Warren Q
"Wheels might look complicated to the likes of you..." - Philomena Cunk

Offline Alexis

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This one is coming along rather quick , lovely work as always Stephen  :)



Alexis
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Offline gedmundson

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Such great work on a unique project, Stephen. I admire your ambition and bravery taking on this one!
Cheers,
Gary

Offline PrzemoL

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Very fine scratch work on the unique subject. I like it very much.
Ash nazg durbatuluk, ash nazg gimbatul,
Ash nazg thrakatuluk, agh burzum-ishi krimpatul.

Offline lone modeller

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Evening All,

Thank you Nigel, Warren. Alexis, Gary and Prez for your very kind comments - I appreciate them all.

With the rear float struts in place and firm (they had been left to set for 24 hours),  I proceeded to attach the floats to the struts. This assembly required supper while the cement set so a support was provided while the cement was again left to harden overnight:





After the cement had set I was able to carefully insert the two outer front float struts to secure the forward end of the floats - these too were allowed to dry out before I fixed in place the under pair of struts with the v at the top. This assembly was again allowed time to set before proceeding further:





The wing and float support struts were painted and some touching in followed:





The engine and propellor were fixed to the rear of the fuselage nacelle and the whole model rigged with rolled copper wire attached with CA glue. Finally the observer?s windscreen was added - this was made from acetate cut from an old Airfix bubble packaging, and the model is finished as far as the aircraft is concerned. However I want to mount it on to a frame and trestles to support the rear floats - these will be made in due course, but for the moment here are images of the model as it is at present:







I will post more images in RFI when I have completed the mounting, but that may not be for a few days as I have to go on one of my periodic voyages in the near future. In the meantime, thanks for looking.

Online Dirigible-Al

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This is absolutely sublime Stephen.
Alan.
I heard that it all started when a bloke called Archie Duke shot an ostrich 'cause he was hungry!

Online NigelR

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That's a superb build Stephen, you did a great job on a complex scratchbuild and a really interesting subject. Well done!