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Here is a list of optional tools mentioned in the manual that
will help you build the Viper 500 ARF.

Hobbico

®

Heavy-Duty Scissors 8-1/2" (HCAR0670) 

2-56 and 6-32 Taps

AccuThrow

Control Surface Deflection Meter

(GPMR2405)

CG Machine

(GPMR2400)

4-in-1 Clevis Installation Tool (GPMR8035)

Top Flite

®

MonoKote

®

sealing iron (TOPR2100) 

Top Flite Hot Sock iron cover (TOPR2175)

Top Flite MonoKote trim seal iron (TOPR2200)

Top Flite MonoKote heat gun (TOPR2000)

There are two types of screws used in this kit:

Sheet metal screws are designated by a number and a
length. For example #6 x 3/4".

This is a number six screw that is 3/4" long.

Machine screws are designated by a number, threads per
inch
, and a length. SHCS is just an abbreviation for “socket
head cap screw” and that is a machine screw with a socket
head. For example 4-40 x 3/4".

This is a number four screw that is 3/4" long with forty

threads per inch.

When you see the term 

test fit in the instructions, it

means that you should first position the part on the
assembly without using any glue, then slightly modify or
custom fit the part as necessary for the best fit.

Whenever the term 

glue is written you should rely upon

your experience to decide what type of glue to use. When a
specific type of adhesive works best for that step, the
instructions will make a recommendation.

Whenever just 

epoxy is specified you may use either

30-minute (or 45-minute) epoxy 

or 6-minute epoxy. When

30-minute epoxy is specified it is highly recommended that
you use only 30-minute (or 45-minute) epoxy, because you
will need the working time and/or the additional strength.

Photos and sketches are placed 

before the step they

refer to. Frequently you can study photos in following steps
to get another view of the same parts.

The Viper 500 ARF is factory-covered with Top Flite

MonoKote film. Should repairs ever be required, MonoKote
can be patched with additional MonoKote purchased
separately. MonoKote is packaged in six-foot rolls, but some
hobby shops also sell it by the foot. If only a small piece of
MonoKote is needed for a minor patch, perhaps a fellow
modeler would give you some. MonoKote is applied with a
model airplane covering iron, but in an emergency a regular
iron could be used. A roll of MonoKote includes full
instructions for application. Following are the colors used on
this model and order numbers for six foot rolls.

Red–TOPQ0201

White–TOPQ0204

Fuse = Fuselage

Stab = Horizontal Stabilizer

Fin = Vertical Fin

LE = Leading Edge

TE = Trailing Edge

LG = Landing Gear

Ply = Plywood

" = Inches

mm = millimeters

SHCS = Socket Head Cap Screw

For the latest technical updates or manual corrections to the
Viper 500 ARF, visit the Great Planes web site at
www.greatplanes.com. Open the “Airplanes” link, then
select the Viper 500 ARF. If there is new technical
information or changes to this model, a “tech notice” box will
appear in the upper left corner of the page.

Do not discard the kit box! With minimal disassembly, the
Viper 500 ARF can be reinserted into its box for transport
and even shipment to contests!

MANUAL UPDATES

COMMON ABBREVIATIONS

IMPORTANT BUILDING NOTES

Covering Tools

Optional Supplies & Tools

4

Summary of Contents for Viper 500 ARF

Page 1: ...buyer is advised to return this kit immediately in new and unused condition to the place of purchase IMPORTANT NOTE This model is designed for sport flying and AMA Quickie 500 racing We will not quot...

Page 2: ...an fly at reasonable speeds until your confidence and skill are up to their full speed adrenaline rush The Viper 500 ARF is designed for sport flying and AMA Quickie 500 pylon racing competition accor...

Page 3: ...y connection of throttle and aileron servos FUTM3910 Switch Standard with heatshrink to secure to battery Servos 4 3 requiring 35 oz in of torque Servo recommendations The Viper 500 ARF is designed to...

Page 4: ...ecommended that you use only 30 minute or 45 minute epoxy because you will need the working time and or the additional strength Photos and sketches are placed before the step they refer to Frequently...

Page 5: ...lick on Where to Buy If this kit is missing parts contact Great Planes Product Support Replacement Parts List Order Number Description How to Purchase Missing pieces Contact Product Support Instructio...

Page 6: ...mount wing GPMQ3046 4 6 32 x 1 4 Bolts for main landing gear GPMQ3024 5 2 x 3 8 Screws to mount servo tray and hatch GPMQ3820 1 2 Washers to mount servo tray and hatch GPMR3400 1 2 x 9 CA Hinge Strip...

Page 7: ...photo the aileron torque rods protrude from the bottom of the wing cut the covering from the servo opening and the bottom of the four wing bolt holes Turn the wing over and cut the covering from the...

Page 8: ...A to the top and bottom of each hinge Do not use CA accelerator Gently work the aileron up and down while the glue hardens After the CA has fully hardened test the hinges by pulling on the ailerons 1...

Page 9: ...me as you did with the wing Permanently attach the ruddervators to the V tail the using the same hinging technique used with the ailerons 2 Bolt the V tail to the fuse with two 8 32 x 1 1 2 38mm flat...

Page 10: ...make a slight bend Reinstall the pushrods and attach the clevises Note This bend is to make the pushrod move as freely as possible in the pushrod tube It may take several small adjustments to get fri...

Page 11: ...hole in the mount as a guide to drill a 3 16 4 8mm hole through the firewall Note It is okay if you drill through a portion of the factory installed blind nut on the back of the firewall Remove the m...

Page 12: ...uselage in the approximate location of the fuel lines from the tank Remove the tank Drill 1 4 6mm holes for the fuel lines Harden the wood around the holes you just drilled with thin CA 12 Guide a 12...

Page 13: ...der Modifications on page 16 1 Trim the servo tray to fit your servos 2 Glue the V tail servo supports to the servo tray The side you glued the supports onto is now the bottom Note If you used servos...

Page 14: ...A 8 Lift the plastic antenna tube up through the servo tray Reinstall the receiver and receiver battery 9 Remove the covering from the antenna tube exit at the rear of the fuse 10 Using an arm cut off...

Page 15: ...20 Secure the front of the hatch with a 2 x 3 8 9 5mm screw and 2 washer 21 Determine the size of the throttle servo you are going to use Using the photos as a reference mount the throttle servo in th...

Page 16: ...e modifications are recommended only if your radio does not have V tail mixing 1 Cut the tail of the fuse off 1 4 6mm behind the tail skid 2 Remove covering from the rudder 3 Glue 1 4 x 1 2 x 1 1 2 6...

Page 17: ...dervator pushrod as shown Connect the two ruddervator pushrods together with two 5 32 4mm wheel collars 15 Attach the rudder pushrod to the right hand servo with the Faslink as done with the other ser...

Page 18: ...f the systems in place including the engine landing gear covering and paint and the radio system More than any other factor the C G balance point can have the greatest effect on how a model flies and...

Page 19: ...eight to fall off Use 2 sheet metal screws RTV silicone or epoxy to permanently hold the weight in place 4 IMPORTANT If you found it necessary to add any weight recheck the C G after the weight has be...

Page 20: ...an assistant holding the model using hand signals to show you what is happening If the control surfaces do not respond correctly do not fly Find and correct the problem first Look for loose servo con...

Page 21: ...hasn t been cut shortened or otherwise damaged 5 Balance your model laterally as explained in the instructions 6 Use thread locking compound to secure critical fasteners such as the set screws that h...

Page 22: ...rface flutter Because flutter can quickly destroy components of your airplane any time you detect flutter you must immediately cut the throttle and land the airplane Check all servo grommets for deter...

Page 23: ...to be aware of the relationship between a race model s airspeed and the responsiveness of its flight controls A flight plan greatly reduces the chances of crashing your model just because of poor pla...

Page 24: ...____________ Where Purchased _________________________ Date Construction Started __________________ Date Construction Finished _________________ Finished Weight __________________________ Date of Firs...

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