Dornier Do 215 - Scale twin bomber for control line.
Quote: "Dornier 215, by Capt C Milani. A magnificent model justified by the finest drawing in the APS range, and a perfect mate for the already famous APS DH Mosquito (oz866).
OF THE MANY control-line scale models it has been our pleasure to examine, none can compare with Capt. Milani's detailed Dornier either on the basis of internal and external adherence to scale perfection, or in flight performance, and it is only after some weeks of concentrated draughtsmanship that we are able to introduce the design for all to enjoy through the medium of APS.
Forgetting the superlatives - one could sum up the Dornier as being king of its class. It flies under full throttle control, with Eifflaender carburettors on its pair of ED 3.46 Hunter diesels, taxies slowly, roars into full power for take-off, reduces revs for cruising, and lands on a tickover or after either engine has cut. Note that point, for the slight engine offset allows it to fly even in a strong cross-wind when the inner motor happens to run dry first. It is in fact, a 'safety first' design, for Cesare Milani is not only to be admired for the many touches of ingenuity in this model, but also for the built-in practical points (like the ply keel under the nose for a bouncy landing, or three-sheet tailplane with hidden box hinges). Internally, the original is complete even to the mattress on the floor for the rear gunner, and use of perforated zinc, cardboard and soft wire produces a set of furnishings that would honour any static museum exhibit, as the photos show.
One does not have to be a Milani perfectionist to reproduce the Do. 215, but it does call for modelling experience, in view of the fuselage planking and 'glasshouse' nose structure. Anyone who has built the APS Invader (oz9062), Mosquito (oz866), Catalina (oz2207) or HP Hannibal (oz465) multis will find construction easy, if perhaps a trifle demanding in the nose formers. For simplicity, and particularly if interior detail is not required, the nose is less formidable with solid balsa bulkheads to replace ply frames F1-F6. Similarly, one does not have to use full throttle control, nor a pair of 3.5 cc diesels, for experience has shown that the model will fly well on the power of one engine alone to indicate that any combination totalling 4 cc. upwards would do the trick (powerful engine in the port nacelle).
A glance at the list of materials required will show that the model is mostly ply and 1/16 in or 1/8 in sheet balsa, so construction should start with plenty of fretsaw practice on the ply formers. Assembly follows the standard procedure of vertical crutch construction, with half formers mounted on the keels, which are then lifted from the plan, other halves fitted and spruce stringers added. Wing can be made in one piece with one side finished first, then spars are 'rocked' to bring other side flat on the board. Bare wing framework is then fitted to the formers F7, 8 and 9, and build up nacelles around N7, 8 and 9 on spars.
Tailplane can be made in either of two ways. It can be completed ready to it the fuselage or made top half only and bottom ribs and sheet added when fuselage planking is complete, then fit the control mechanism. The entire model is sheeted and planked, noting scale aileron grooves, and nose frames fitted ready for glazing. Interior furnishing, like many other building hints are detailed on the plan, and final finish will entirely depend upon the whim of the constructor.
The original bore an authoritative glossy bottle-green upper surface, and glossy sky-blue undersides with all rivet lines neatly marked by a rotating clock wheel. A covering of lightweight tissue and several coats of sanding sealer form the basis of a fine surface and with a total weight of up to 50 ounces, the Dornier is as lively as a cricket on 60-ft lines - giving one the impression that a loop would not be as hazardous as might be imagined!"
Quote: "as I have the Do215 completed I thought it would be a good post for this weekend. I remember it being really good fun to draw up - especially the cabin detail in the middle. So, from the May 1956 Aeromodeller here is the Dornier 215 designed by Ceaser Milani who was well known for his scale models at the time. Just look at the detail in the article and it is easy to see why. This model spans 44in and was designed around two ED 3.46 Hunters equipped with throttles. I can only imagine that they were the long stroke engines which are really nice engines, extremely tractable and reliable. As always my disclaimer about being tracings of the original scans but, because of the detailed plan, this is much more relevant. Most of all enjoy."
Update 30/10/2018: Added article, thanks to RFJ.
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