Wagtail (oz8002)
About this Plan
Wagtail. Radio control pylon racer. Wingspan 39in for 2.5cc engines.
Quote: "Simple but fast model for galloping ghost control by a leading exponent of the system. Wagtail, by John Ralph.
Like all 'new' model aircraft designs, Wagtail owes its general layout to some previously designed model. In this instance, it was Geoff Franklin's Pylon Duster - a model designed for aileron and elevator, with reed control. Wagtail, however, differs in a number of important ways from that model, in order to allow it to be controlled at high speed from the single channel elevator and rudder GG system. If you just took the original version and tried flying it on GG, you would not have much success. The wing layout is for ailerons, and has not enough dihedral to permit turns to be made properly with rudder.
Also, the wing section it not suited to the limited elevator control obtainable with GG systems, so both of these points have received attention. A further point is that, when the relatively light weight single motor GG system is in stalled, the wing area can be reduced while still retaining a low wing loading. The wing section can also be considerably thinned down, giving much reduced drag.
The resulting design, when all these various features had been incorporated, resulted in a model which proved to be highly manoeuvrable and very fast on an O.S. Max III .15. Wagtail can hold its own against any similar reed multi or feedback proportional equipped model, and its response to control is so fast that I personally feel very much happier flying it than I do flying many slower, reed controlled, machines.
As regards value for money in flying enjoyment, of course, you just cannot beat galloping ghost controlled models. With the appearance of some very neat American servos on the British market and the advent of some British manufacturers marketing GG equipment, we are already seeing a lot more models using this system. It certainly means that anyone can have the pleasure of proportional control, on virtually a single-channel budget.
Construction. As can be seen from the plan, the constructional methods used in Wagtail are simple and the model can be built quite quickly..."
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(oz8002)
Wagtail
by John Ralph
from Radio Modeller
March 1967
39in span
IC R/C LowWing
clean :)
all formers complete :)
got article :) -
Found online 23/08/2016 at:
http://www.rcgroups.com/forums/showpost.php?p=35402778...
Filesize: 365KB
Format: • PDFbitmap
Credit*: RFJ
Downloads: 926

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- Wagtail (oz8002)
- Plan File Filesize: 365KB Filename: Wagtail_RM_oz8002.pdf
- Supplement Filesize: 1001KB Filename: Wagtail_RM_oz8002_article.pdf
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Notes
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