T-Tray (oz5096)


T-Tray (oz5096) by James Snook from Aeromodeller 1954 - plan thumbnail

About this Plan

T Tray (Tea Tray). Control line stunt model.

Quote: "Introducing James Snook's Tough All-Wing Stunt Model. T-Tray.

There are not many stunt designs that can claim the distinction of being fully aerobatic with only .5cc to power them, but T-Tray is one of them, and as a tough, inexpensive novelty you'll find it hard to beat. In the words of the Mad Hatter, it's a bat that twinkles like a tea tray!

Wingspan is a mere 12 inches, length only 10 in and area 78 sq in. Built to weigh around 4 oz all-up, T-Tray flies on thread or wire lines of any Length from 20 to 35 ft, depending on wind conditions, and as for cost - two of them can be made for as little as 6s. Full-size plans are overleaf, so why not grab some 1/32nd and 1/16th sheet plus a strip or two of 1/8th sq and a length of 1/4 sq hardwood, scrap celluloid, ply, tissue, wire, and cement. That's all you need to get the model complete and ready to fly in ten hours' building time.

Make a start by cutting out all the ribs, noting the different thicknesses required at certain positions on the model. Then pin the two bottom 1/8 spars to the plan, as well as the lower halves of the 1/32 sheet trailing edge to the centre-section. Add the centre, longer, ribs and when set dry, add the outer ribs, making sure that they are in-line with the centre section. The trailing edge points should be 1/4 in above the board. Now add the top spars, top of the centre-section trailing edge, the leading edge and the outer section trailing edges.

Lift from the plan and cement all the gussets in position. Also fit the 1/2 oz tip weight in place with a silk patch, making certain that it will not come adrift at the first belly-landing.

One-sixteenth sheet fillets in the 'T' corners and 1/32 strips to support the covering at the change of section can now be added, and the next task is to fit the engine bearers. Engines suitable for this model have a great variety of engine bearer spacing: that on the plan being for the popular Allbon Dart. If a Frog 50, for example, is to be fitted, then the bearers and centre ribs should be brought closer together, and tank altered accordingly. Cut away part of the leading edge to rake the bearers, which are firmly cemented with Britfix to the ribs, Add the hardwood crossbraces, ply bell-crank mount and assembly, then sheet over the centre-section with 1/32. Fit the fin with appropriate offset, hinge the 1/16 elevator in place and hook up the push rod for control. If you prefer, these last operations can be left until after covering with lightweight Modelspan and giving two coats of clear dope plus one of colour and Fuel Proofer.

Ready to fly, we suggest 25 ft lines for the first test, and that a reliable helper is called in to give a smooth hand launch. T-Tray is a nippy little flier, and will accelerate up to 50 mph, if an efficient prop is used. We suggest the Frog 6 x 3 nylon prop as a good all-rounder to start with.

Don't over-control after the launch, and you'll find the T-Tray flies itself away on neutral or slight up elevator, then when it has gained airspeed and is high enough, you can start to flit it around as the Mad Hatter suggests in our heading rhyme, extracted of course from that classic, 'Alice in Wonderland' by Lewis Carroll.."

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Supplementary file notes

Planfil includes article.


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T-Tray (oz5096) by James Snook from Aeromodeller 1954 - model pic


T-Tray (oz5096) by James Snook from Aeromodeller 1954 - pic 003.jpg
T-Tray (oz5096) by James Snook from Aeromodeller 1954 - pic 004.jpg
T-Tray (oz5096) by James Snook from Aeromodeller 1954 - pic 005.jpg
T-Tray (oz5096) by James Snook from Aeromodeller 1954 - pic 006.jpg
T-Tray (oz5096) by James Snook from Aeromodeller 1954 - pic 007.jpg
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T-Tray (oz5096) by James Snook from Aeromodeller 1954 - pic 009.jpg
T-Tray (oz5096) by James Snook from Aeromodeller 1954 - pic 010.jpg

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User comments

This is another of my planes, thanks to Outerzone [model photo & more pics 004-010]. Thank you very much.
MartinHurda_CzechRep - 25/06/2019
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