Assembly & Operation Manual
INTRODUCTION
Thank you for purchasing Skymaster arf Viperjet! We have put a lot of effort and time into this model.
We at Skymaster strive to be a market leader in the ARF— jet market. We were the first company to
produce ARF—jets in the world and we would like to continue being amongst the best. Although we
have made every effort that this model was fit for shipping, we would like you to inspect the contends
and call your nearest dealer immediately if any defects or missing parts are spotted! This manual will
allow you to duplicate the factory prototypes.
LIABILITY
You have acquired a kit, which can be assembled into a fully working R/C model when fitted out with
suitable accessories, as described in the instruction manual with the kit. However, as manufacturers, we
at Skymaster are not in a position to influence the way you build and operate your model, and we have
no control over the methods you use to install, operate and maintain the radio control system compo-
nents. For this reason we are obliged to deny all liability for loss, damage or costs which are incurred
due to the incompetent or incorrect application and operation of our products, or which are connected
with such operation in any way. Unless otherwise prescribed by binding law, the obligation of the Sky-
master company to pay compensation is excluded, regardless of the legal argument employed. This ap-
plies to personal injury, death, damage to buildings, loss of turnover and business, interruption of busi-
ness or other direct and indirect consequent damages. In all circumstances our total liability is limited to
the amount which you actually paid for this model.
BY OPERATING THIS MODEL YOU ASSUME FULL RESPONSIBILITY FOR YOUR ACTIONS.
It is important to understand that Skymaster, is unable to monitor whether you follow the instructions
contained in this instruction manual regarding the construction, operation and maintenance of the air-
craft, nor whether you install and use the radio control system correctly. For this reason we at Skymaster
are unable to guarantee, or provide, a contractual agreement with any individual or company that the
model you have made will function correctly and safely. You, as operator of the model, must rely upon
your own expertise and judgement in acquiring and operating this model.
WARNING
This ‘jet’ aircraft is a high-end product and can create an enormous risk for both pilot and spectators, if
not handled with care, and used according to the instructions. Make sure that you operate your Viper
according to the AMA rules, or those laws and regulations governing model flying in the country of use.
The engine, landing gear, servos, linkages and control surfaces have to be attached properly. Please
use only the recommended servos and accessories. Make sure that the ‘Centre of Gravity’ is located in
the recommended place. Use the nose heavy end of the CG range for your first flights. A tail heavy
plane can be an enormous danger for you and all spectators. Fix any weights, and heavy items like bat-
teries, very securely into the plane. Make sure that the plane is secured properly when you start the en-
gine. Have a helper hold your plane from the nose before you start the engine. Make sure that all spec-
tators are far behind, or far in front, of the aircraft when running up the engine. Make sure that you
range check your R/C system thoroughly before the 1st flight. It is absolutely necessary to range check
your complete R/C installation first WITHOUT the engine running. Leave the transmitter antenna re-
tracted, and check the distance you can walk before ‘fail-safe’ occurs. Then start the engine, run at
about half throttle and repeat this range check. Make sure that there is no range reduction before ‘fail-
safe’ occurs. If the range with engine running is less then with the engine off, please DON’T FLY at that
time. Make sure that your wing spar tube is not damaged. Check that the anti-rotation dowels for the
wings are not loose. Check that the wing, stab, fin and nose retaining bolts are tight. Please don’t ignore
our warnings, or those provided by other manufacturers. They refer to things and processes which, if
ignored, could result in permanent damage or fatal injury. Secure the plane before starting engine.
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