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SAB Heli Division Goblin Urukay 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 proper Lubricant 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.
ABOUT HPS3
The new HPS head offers an independent dampening system for each blade grip,
It is possible change the rigidity of the dampening system trought O-ring.
In the Kit, you can find 6 O-ring 90° shore ( HA038) and 6 O-ring 60° shore (HA024).
We suggest to start with medium setup ( 90° inside + 60° ouside, see pag 13 ).
You can change 90°/ 90° or 60°/ 60° for change the head caratteristic.
Changing the O-ring, please check the Axial preload. The blade grips must move
freely, but they should not move just under their own weight.
You can remove / add the 0.2mm shim (HC232) from each side for to get perfect
preload.
ABOUT HPS3 SETUP
3 blade rotor heads require a much lower cyclic gain on flybarless systems.
We recommend that you set your gain at least 30% lower than the gain you
normally use on your 2 blade rotor head helicopters.
You can start increasing the gain after you complete your first flight.
Running too high of a gain can induce a violent oscillation that can potentially
cause damage to your helicopter in flight.
With 3 blades rotor head, it is very important to have a perfect tracking
Often, unusual vibration are determined by wrong tracking.
TIPS:
To remove the dampeners,
you can use a flathead
screwdriver through the
hole as shown.
Page 30
Chapter 16, Maintenance
… 32 …


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