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SAB Heli Division Goblin 500 Sport Manual

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Maintenance
*On the Goblin 500, some areas to look for wear include: - Motor belt - Tail belt - Dampers - Main gear and pinion.
*The lifespan of these components varies according to the type of flying. On average it is recommended to check these
parts every
100
flights. In some instances, based on wear, these parts should be replaced every
200
flights.
*The most stressed bearings are definitely those on the tail shaft. Check them frequently. All other parts are not particularly
subject to wear.
*Periodically lubricate the tail slide movement and its linkages as well as the swash plate movement and its linkages.
*Lubricate the main gear with Dry-Fluid or Tri-Flow Synthetic grease.
*To ensure safety you should do a general inspection of the helicopter after each flight. You should check:
- Proper belt tension (motor belt and tail belt).
- Proper isolation of the wires from the carbon and aluminum parts.
- All screws remain tight.
After a crash, it is very important inspect all parts.
Operations Before Flight
*Set up the transmitter and the flybarless system with utmost care.
*It is advisable to test and verify all the settings on the transmitter and flybarless system without the main or tail blades on initially.
*Check that all wiring is isolated from the carbon/aluminum parts. It is good practice to protect them in the areas where they are at
most risk.
*Be sure of the gear ratio, verifying carefully the motor pulley in use. The forces acting on the mechanics increase enormously with
increased rpm. Although the Goblin can fly at high rpm, for safety reasons we suggest to not exceed
2900
rpm on the Goblin 500.
*Check the correct tension of the tail belt.
*Fit the main blades and tail blades. (Fig.1 and Fig.2)
*Please make sure the main blades are tight on the blade grips, you should be able to violently jerk the head in both directions and
the blades should not fold.
*Check the collective and cyclic pitch range. For
3D
flight, set about +/- 12°-13°. The outer marks in the blade grips and head hub
indicate 13°.
*It is important to check the correct tracking of the main blades.
*On the Goblin 500, in order to correct the tracking, adjust the main link rod as shown in figure 3. The threads are opposite, one side
clock-wise and the other side counter clock-wise, this system allows for continuous fine adjustments of the length of the control
rod; it is not necessary to detach any of the ball links.
*The tail of the Goblin 500 is quite unique in the sense that the tail hub is dampened like the main rotor head. It is normal for the tail
slider to be a bit tight in the very beginning as the tail spindle preload is usually a bit high when the helicopter is brand new. The
preload will loosen up after a few flights once the o-rings start to wear, it is completely normal for the tail blade grips to have what
appears to be “lose dampening” over time.
*Perform the first flight at a lower head speed than normal, for example
2200
rpm. After this first flight, do a general
check of the helicopter. Verify that all screws and bolts are correctly tightened.
HC111
H0265
HC206
HC212
HC074
Bag 11
In Flight
During its first flights the Goblin has to be “run in”.
The Damper, the main gear, the uniball and other parts must undergo some slight wear to operate smoothly. It is likely that
during the very first flights the model may exhibit a swaying phenomena, particularly at low head speed.
This phenomena disappears after a few flights.
Note:
The HPS head should be assembled with one 1mm spacer H0225 on each side.
After approximately 10/20 flights, please check preload, you can add one or two shim HC228 if preload has changed.
For hard 3D, the best setup is add one extra shim between the spacer H0225 and bearing.
Important is that the blade grips must move freely, but they should not move just under their own weight.
Page 26
Chapter 16, In Flight / Maintenance
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