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SAB Heli Division Goblin 770 Competition Manual

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MAINTENANCE
*On the Goblin, areas to look for wear include:
* Motor belt
* Tail belt
* Damper
* Main gear and pinion
The lifespan of these components varies according to the type of flying. On average it is recommended to replace
these special parts every
100
flights.
*The head tends to lose rigidity after a while. Check this condition every
20
flights. Preloading with precision shim washers,
it is possible to vary the rigidity of the head.
*Check all uniballs often.
*The most stressed bearings are definitely those of 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 swashplate movement and its linkages.
*Lubricate the main gear with Tri-Flow Synthetic grease every 20 flights.
*Check the screws that are highlighted in the following images frequently, make sure you remain tight (
fig.2
and
fig.3
).
*To ensure safety you should do a general inspection of the helicopter after each flight. You should check:
* The maintenance of proper belt tension.
* The proper isolation of wires from the carbon and aluminum parts.
* That all screws remain tight.
HPS HEAD
- The dampening system of this head allows for a wide range of head speeds to be used without sacriticing safety.
- The dampers are composed of an o-ring and a technopolymer damper that defines the maximum possible movement of
the spindle.
- The model response with change based on the preload, less preload (less shims) will allow for a softer feel and lower head
speed, a high preload is used for hard 3D flight.
- To increase the preload, you can add an additional 0.2mm shim on each side, to decrease the preload, you can remove a
0.2mm shim on each side. It is important that the blade grips do not have the axial play so you must always keep the 1mm
shim on each side regardless.
Copyright@2013 - SAB Heli Division - All rights reserved
Page 33
Chapter 16, Maintenance
… 35 …


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