Normal Flight - Opitec Hobbyfix Mini-Holli Manual

To understand the theory of flight you can carry out
the following tests
Insert a pin in the middle of each wing tip end. Hold the
model by these pins and you can see how the planes re-
acts up and down.
Then insert a pin ( Photo a) where the two dowels meet
then tie on a piece of thread 10cm
(Photo b)
Hold the Plane by the thread ( Photo c) This is the Cof G
centre of gravity . When held by the thread the nose of the
plane should dip slightly down . This will indicate the flight
path
Merke:
Die Schwerkraft "S" zieht das Modell im Schwerpunkt nach
unten! Der Auftrieb "A" zieht das Modell im Auftriebsmittel-
punkt nach oben! Dadurch entsteht die nach unten geneig-
te Gleitflugbahn, auf der das Modell, wie eine Kugel auf
einem, schräggestellten Brett, zu Boden gleitet.
By adding a paper clips to the tail you can make the tail end heavier this will cause the flight of the plane to
loose speed and stall . ( like trying to make a marble roll uphill )
Adding the extra weight to the front will make the model dive. A well trimmed model should glide for 15me-
tres
Flying the mini Holli in a circle
To this tie 2metre of strong thread on the left hand wing tip

Normal flight

Fold the flaps up 1/2mm and bend the tail fin rudder 1mm to the right . Stretch your arm out and swing the
plane into a circular flight path and the model should fly in a level path
Up and down flight
Bend the wing flaps down about 1mm . The plane will now fly in an up and down pattern
4
a
c
b
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