De Havilland Mosquito XVI (oz11897)
About this Plan
De Havilland Mosquito XVI. Rubber scale model twin WWII fighter/bomber. Scale is 1/16.
Quote: "De Havilland Mosquito XVI. Scale 3/4 in = 1 ft. Specially designed for Super Scale Kits, Uppingham, by Howard Boys."
Scan from DBHL, cleanup by theshadow.
Note this plan has also been stamped as Archive #005623 from the Cooperative Plans Service. See their website at www.co-op-plans.com
Direct submission to Outerzone.
Update 26/10/2020: Added article from Aeromodeller, Nov 1947, thanks to Aeronorm on HPA who posted the full magazine see https://www.hippocketaeronautics.com/hpa_plans/details.php?image_id=11276. This is the article Richard mentioned earlier in his comment.
Quote: "THE aim of flying scale designers has always been to reproduce the characteristics of the original machine in a model, both in stationary and flying poses, with duration only of secondary importance as long as the model would fly and fly well. The name of Howard Boys has been associated with efficient flying scale models in this category for a very long time, and here we feature another of a long line of justly famed models that he has produced.
Recently the AEROMODELLER Research Staff had the opportunity of handling a model built to this design and putting it to a very thorough test. An idea of the ruggedness of the construction can be gathered from the fact that throughout the whole of a hard morning's flying the only damage sustained by the model was very superficial, although those testing the model had of course to trim entirely from scratch as it had only just been completed by that master model builder, AJ Cockle of Northampton, whose enviable dexterity with paint brush and sandpaper has won him many awards in various parts of the country.
Take-off tests were first made from the concrete after glide tests had shown the model to be correctly rigged without the need of any weight alteration On three hundred turns the machine made a fast take-off in true 'Mossie' manner, hurtling off the deck once airborne and rising rapidly in a fast climbing turn to a fair height and then planing in to a flat 'engine-off' landing in the grass. The model proved most consistent, repeating this performance quite flawlessly on subsequent flights. From a hand launch the height obtained was considerably greater with a consequent increase in total duration. The model flew very fast but stably, with that quickness of movement that characterises the full size machine. In particular the ease with which it performed a tight banked turn was most impressive.
The design of the model structurally is very sound, incorporating a monocoque fuselage and considerable sheet covering on the wings. Despite this rigid construction, which helps to no mean degree the remarkable scale appearanoe demonstrated by the accompanying photos, the all-up weight is not excessive, and if less attention is paid to high scale finish the weight could probably be considerably reduced and the performance stepped up in proportion.
The general building of the model presents no great difficulties, though it may be as well to issue the old warning that this is hardly the model for the less ex-perienced. In particular the rigging and flying call for great care. The centre section is integral with the fuselage, the wings plugging in by means of dowels, and here correct alignment is absolutely vital - the slightest inaccuracy wreaking havoc in a model of this type. The fixing of the tailplane calls for equal care, and it is essential that no flying surface is warped.
Remember that the model is not a lightweight and will fly fast, though the angle should be flat. Therefore, test for trim only over long grass, and go very steadily with weight adjustment as the model is sensitive in this direction. Experienced aeromodellers who are tired of the everlasting duration model and are looking for an outlet for their ingenuity will find plenty of scope for their activities in building and flying the Mosquito. Flying scale types seem to be sadly neglected by the majority of modellers, but the wheel will undoubtedly turn, full circle to the time when this most interesting branch of the sport will again receive all the support it deserves.
The plans of this model, quite one of the most interesting we have published, are available as usual from Aeromodeller Plans Service, Allen House, Newarke Street, Leicester, for 6/- post free."
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User commentsI see that the Howard Boys Mosquito kitted by Uppingham Models has appeared on Outerzone. It has of course been there all along.... Let me explain. The Boys plan was announced by the Aeromodeller accompanied by a short article in November 1947, priced at 6 shillings but without the customary reduced scale drawing, not exceptional as they never showed the plan for the Moore Typhoon either. And that was it. The only other reference is when PL Whittaker published his 'twin' diesel Mosquito he refers to it being a converted rubber model. Then for Christmas 1954 Aeromodeller published their control line Mosquito (oz866), again a Mk XVI. You don't have to look very closely to see that the rib and former spacing is the same as the Boys drawing as are the profiles and sections. Admittedly the 'Aeromodeller Staff' had redrawn the model onto a single sheet but it is the same design.
I have been working on the model in the accompanying photograph [main model pic and more pics 003] for several years but it is built from the Uppingham plan and I was able to take advantage of the perfectly placed former notches on that drawing. Propellers are made by setting plastic blades in a balsa and ply hub, but how much easier trimming would be if they were contra rotating like my Lightning.
Richard Falconer - 24/01/2020
That's a beautiful model, Richard. You really should get it finished off and into the air.
SteveWMD - 24/01/2020
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