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"Izicraft" - 400 size High Wing Trainer in Depron - Free Plan
I have
been asked many times for a free plan of a high wing trainer made from
depron. Surprisingly there are not many around, and some of the depron
high wing trainer plans I've seen have a flaw, or a building difficulty
involved. Here is one which is a straightforward build, flies well,
takes either a cheap brushed 400 or brushless motor, uses either 8 x
nimh or 3 x lipo batteries, and adding ailerons is simple after you
learn to fly, and are ready to fly better. Enjoy ....
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Izicraft
- Here is a model airplane for speed 400 power on the basis of
following minimalist specifications : |
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- Model for complete beginners, both in construction and in
flight
- The cheapest model possible
- Unsophisticated construction equipment
- able to reach safe altitude, then fly at very low speeds
- Model built quickly, repaired quickly
- Depron where possible, extra reinforcing for robustness where
necessary
- Wingspan 1.25 m, length: 0.75 m, Wing area: 22, 5 dm2
- Weight in flight: less than 700 g
- cheap brushed 400 6V engine or brushless substitute, 6 x 3
propeller
- 18 amp ESC BEC
- Looks like a nitro glowfuel engine trainer plane
- 8 cell 1100 Nimh, or 3S 1200lipo battery
- radio 3 channel or higher, two micro-servos |

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Construction in
Photos |
Fuselage Plan
All |
Wing Plan All |
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Fuselage
Plan Tiled A4 |
Wing Plan
Tiled A4 |
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Some of the test comments on
the PDF plans are in French language. You can copy and paste this
text into Babelfish to get an instant online automatic English language
translation
HERE |
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VIDEO
- Izicraft
3 ch Trainer |
VIDEO
- Izicraft
4 ch Sport (with ailerons added) |
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Note
to non-French readers
- Some of the measurements on the plans are in the French style
of tenths of a millimetre, so if you see something like "10/10"
that means 10/10ths millimetres or 1.0mm. Therefore a piano wire
control rod listed as 200 x 6/10 means 200mm x 0.6mm diameter
wire. |
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After extensive testing sessions (thirty flights and no breaks),
a few conclusions:
- I have increased the deflection of the rudder and engine
downthrust which improved handling
- Take Off the ground is possible but difficult for beginners if
there is no wind
- Launching by hand, without sufficient momentum is not an issue
on 8 cell batteries
- Climbs to altitude quickly with an angle that can be large (
30 °) without stall.
- The flight engine mount template is shown below
- ailerons can be added easily to make a faster version, but
less suitable for learners
- when using lighter lipo battery the centre of gravity
needs to be relocated with 20 grams approx of lead in the nose
so as to get it back where it belongs, 1/3rd of chord back from
leading edge at wing root.
- For the rest of the flight, 1 / 4 throttle for level flight,
steering with virtually the only handle right, holding plate
carried gas. Duration of flight Nimh battery with 7 cells: at
least 20 minutes, at aerobatic speed: about 12 minutes, far
greater with 3S lipoly batteries at lower throttle
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Texts, photographs, sketches, plans, notice of construction: Jean-Paul
Thebault – 2004
The
Izicraft is a © UFOLEP-SAM-CLAP 2004-2008. Its use is free
(freeware. However, any distribution and / or changes to the plan must
include sources of the original document: UFOLEP, SAM-CLAP, name of the
aircraft and its designer, as provided by Creative Commons
Jean-Paul
Thebault (UFOLEP 79)
Original
link:
http://clap54b.free.fr/RCavion/Izicraft/izicraft.htm

S400 mount 32 x 32mm |