Seagull Models steen skybolt n250sb, Assembly Manual

STEEN SKYBOLT

Instruction Manual.

30

BALANCING.

1)  It is critical that your airplane be

balanced correctly. Improper balance will

cause your plane to lose control and 

crash. THE CENTER OF GRAV-

ITY IS LOCATED 

120MM

 BACK 

FROM THE LEADING EDGE OF THE 

TOP WING AT THE WING ROOT.

  This is the balance point at which your 

model should balance for your first 

flights. Later, you may wish to experiment 

by shifting the balance up to 10mm for-

ward or back to change the flying charac-

teristics. Moving the balance forward may 

improve the smoothness and arrow-like 

tracking, but it may then require more 

speed for take off and make it more diffi-

cult to slow down for landing. Moving the 

balance aft makes the model more agile 

with a lighter and snappier ”feel”. In any 

case, please start at the loca¬tion we rec-

ommend .

 With the wing attached to the fuselage, 

all parts of the model installed ( ready to 

fly), and empty fuel tanks, hold the model 

at the marked balance point with the sta-

bilizer level.

 Lift the model. If the tail drops when you 

lift it, the model is “tail heavy” and you 

must add weight* to the nose. If the nose 

drops, it is “nose heavy” and you must 

add weight* to the tail to balance.

*If possible, first attempt to balance the 

model by changing the position of the re-

ceiver battery and receiver. If you are un-

able to obtain good balance by doing so, 

then it will be necessary to add weight to 

the nose or tail to achieve the proper bal-

ance point.

2) Mount both the top and bottom wings 

to the fuselage.  Accurately mark the bal-

ance point on the top wing - 120mm back 

from the leading edge of the top wing at 

the wing root - as shown in the photo.

120 mm

CONTROL THROWS.

Ailerons:

High Rate  : 

12mm

Low Rate : 

10mm 

Elevator:

High Rate  : 

12mm   

Low Rate  : 

10 mm

Rudder:

High Rate  : 

30mm   

Low Rate  : 

20 mm