Introduction
 ZN
Line's
Madness is made of premium quality light balsa, never seen that before
on a so-called Premium class ARF kit! As with Nicola, I was impressed by
the box packaging. Like all ARFs, there are some minor problems with the
kit: the fuel tank is a little too fat to fit in the fuselage! This should
give you an opportunity to verify your modelling skills. The firewall thickness
is robust enough but not thick enough to match the blind bolts. That's about
it. ZN
Line
will correct these flaws to make the perfect ARF kit! Nicola would like
an instruction notice. This will also be fixed by ZN
Line.
But I guess no one modeller will be so highly demanding as to blame this
because everything is so well prepared.
Finishing
The covering is made of Oracover film. Again the quality is there. The
covering will not come loose, and if you damage it, it can be repaired
with the very same film quality and colour.
You can see on my plane the cowl was paint with same color(metallic yellow),
similar to the Yellow oracover - ZN
Line
was so kind to provide me with the paint. However, it can be prepared
by any car paint dealer on request! As with Nicola, I would have liked
to have it already painted(how lazy we are with ARF..), but it is nice
to have the chance to give to this ARF a sign of your own personality.
Engine
The MVVS is great and a smooth engine with quite a linear throttle. I
usde the special MVVS carburetor that actually works fine. I also added
the MVVS rear gas needle to save my fingers. The engine is easy to buy,
with such a good pricing for a very good engine. You can set it as side
or rear exhaust (choose before to break-in). I chose it as a side exhaust.
With the MVVS 2 chambers muffler, and with 15% Nitro, it swings an APC
12.5x 3.75(very wide) at 11,400 rpm on the ground, and with stable idle.
Believe it or not, at 1,900 rpm(using Cool Power 15% Nitro and Enya 4
glow Plug) I got more than enough power. The YS 53 with 12.5x3.75 is good
too. The YS 63 has lots of power. Nicola
Rossi
is using an APC 14x5 , and it seems to be good! Christophe
Paysant-Le Roux
is using the YS 63 and APC 13x4. He believes the APC 14x4 would be the
best when available. You should know that Christophe
sets a throttle limitation of 50% to 3D maneuver indoor or small area.
(YS engines are available @ Singapore
Hobby Supplies)
Settings
If you ask CPLR & JP Zardini,
"Where is the CG located?", they do not know the answer themselves!
If You push them for an answer, they don't even care, because the plane
is so healthy! However the 33% to 37% value given by Nicola is a good
one. I don't like to have a rudder servo installed as Nicola did. However,
I accept it is smart to do this to add weight on tail and Ben
Perreau(USA ZN Line Partner) did the same. This enables a very direct
link to the rudder, and permit to use solid Pull-pull wires from servo
to the rudder.
I place the receiver battery in the fuselage,
rear of the wing(also for CG location). It is a 1100 Ma 6V Nimh battery.
Keep in mind that 3D maneuvers uses far more current the normal aerobatics.
Include a cell voltage indicator(like VoltSpy), so you can check the voltage
at all times. You can easily use all the battery capacity and crash. This
happened to P. Nowik and Myself. It cost me just the cowl and a prop,
and I can say this light ARF plane is very robust! So check your battery
before each flight.
I used an old Futaba S9001 for Ailerons
and Rudder(this one in classic position), 2 Graupner JR Numeric DS 3328
and one micro Robbe Futaba RS 500 for throttle. The 2 JR D 3328 weight
only 25g Each for 4kg.cm of torque! It has speed and precision. But 2
good standard servos of 50g each would be okay and permit a better CG
Location.
I used the following settings on my Madness:
Low rates: Ailerons +/- 30 mm expo - 50%; Elevator
+/- 25 mm expo - 40%; Rudder +/- 120 mm expo -80%
High rates: Ailerons +/-
50 mm expo -60%; Elevator +/- 50 mm expo - 60 %; Rudder
+/- 120 mm expo -80%
Overall
This plane is the evolution of the first 3D plane by Christophe
Paysant-Le Roux(name
was 3 DEMO). All others are only copies!! I do consider the ZN
Line
Madness as a master piece and a great classic . Let's see how the
demanding Japanese RC Flyers will welcome this one!! -
Serge Bordais
Go back to Nicola Rossi's Madness
Review for another read.
Interested
in providing a review of any model for the visitors of Rcaerosport? We
appreciate if you could contribute
pictures and a short write-up for a review. Make Rcaerosport
a success!!!
(Click
the photos for an enlarged version and accompanying caption)
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