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IMPORTANT BUILDING NOTES

•  When you see the term 

test fi t

 in the instructions, it means 

that you should fi rst position the part on the assembly 

without using any glue

, then slightly modify or 

custom fi t

 

the part as necessary for the best fi t.

•  Whenever the term 

glue

 is written you should rely upon 

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

•  Whenever just 

epoxy

 is specifi ed you may use 

either

 30-

minute (or 45-minute) epoxy 

or

 6-minute epoxy. When 30-

minute epoxy is specifi ed 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 stabilizer and wing incidences and engine thrust angles 

have been factory-built into this model. However, some 
technically-minded modelers may wish to check these 
measurements anyway. To view this information visit the web 
site at 

www.greatplanes.com

 and click on “Technical Data.” 

Due to manufacturing tolerances which will have little or no 
effect on the way your model will fl y, please expect slight 
deviations between your model and the published values.

ORDERING REPLACEMENT PARTS

Replacement parts for the Great Planes Ultimate Biplane EP 
ARF are available using the order numbers in the Replacement 
Parts List that follows. The fastest, most economical service 
can be provided by your hobby dealer or mail-order company. 

To locate a hobby dealer, visit the Great Planes web site 
at 

www.greatplanes.com

. Choose “Where to Buy” at the 

bottom of the menu on the left side of the page. Follow the 
instructions provided on the page to locate a U.S., Canadian 
or International dealer. 

Parts may also be ordered directly from Hobby Services by 
calling (217) 398-0007, or via facsimile at (217) 398-7721, 
but full retail prices and shipping and handling charges will 
apply. Illinois and Nevada residents will also be charged 
sales tax. If ordering via fax, include a Visa

®

 or MasterCard

®

 

number and expiration date for payment.

Mail parts orders and payments by personal check to:

Hobby Services

3002 N. Apollo Drive, Suite 1

Champaign, IL 61822

Be certain to specify the order number exactly as listed in 
the 

Replacement Parts List

. Payment by credit card or 

personal check only; no C.O.D. 

If additional assistance is required for any reason, contact 
Product Support by telephone at (217) 398-8970, or by 
e-mail at 

productsupport@greatplanes.com

.

Replacement Parts List 

Order Number 

Description 

How to Purchase

 

Missing pieces ............... Contact Product Support

 

Instruction manual .......... Contact Product Support

 

Full-size plans ................................... Not available

GPMA2970 ........... Fuselage ........................ Contact Product Support
GPMA2971 ........... Top Wing ........................ Contact Product Support
GPMA2972 ........... Bottom  Wing ................... Contact Product Support
GPMA2973 ........... Tail  Surfaces ................... Contact Product Support
GPMA2974 ........... Cowl ............................... Contact Product Support
GPMA2975 ........... Interplane  Set ................. Contact Product Support
GPMA2976 ........... Cabane Set .................... Contact Product Support
GPMA2977 ........... Wheelpants .................... Contact Product Support
GPMA2978 ........... Landing Gear ................. Contact Product Support
GPMA2979 ........... Canopy ........................... Contact Product Support
GPMA2980 ........... Decal Sheet ................... Contact Product Support
GPMA2981 ........... Spinner ........................... Contact Product Support
GPMA2982 ........... Hardware Set ................. Contact Product Support

5

Summary of Contents for Ultimate Biplane EP ARF

Page 1: ...used condition to the place of purchase To make a warranty claim send the defective part or item to Hobby Services at the address below Hobby Services 3002 N Apollo Dr Suite 1 Champaign IL 61822 USA I...

Page 2: ...Ultimate Biplane 1 60 ARF has been carried down to the Ultimate EP For the latest technical updates or manual corrections to the Ultimate Biplane EP visit the Great Planes web site at www greatplanes...

Page 3: ...bs in your area whose membership includes experienced pilots 8 While this kit has been flight tested to exceed normal use if the plane will be used for extremely high stress flying such as racing or i...

Page 4: ...820 Battery Pack Charger The Ultimate Biplane EP ARF has been tested with 11 1V LiPo packs ranging from 1250mAh to 2100mAh Order numbers are provided for packs of this size The lighter 1250mAh pack is...

Page 5: ...dealer or mail order company To locate a hobby dealer visit the Great Planes web site at www greatplanes com Choose Where to Buy at the bottom of the menu on the left side of the page Follow the inst...

Page 6: ...written in the Kit Contents list Great Planes Product Support 3002 N Apollo Drive Suite 1 Champaign IL 61822 Telephone 217 398 8970 ext 5 Fax 217 398 7721 E mail airsupport greatplanes com KIT CONTENT...

Page 7: ...ming the covering from just above and below the hinge slots 2 Push a small T pin through the center of each CA hinge The pins will keep the hinges centered during assembly Insert the hinges into the h...

Page 8: ...h the splines toward the LE Glue the aileron servos to the servo shims with medium or thick CA Attach a 6 150mm servo extension to each aileron servo Use tape to secure the extension to the servo lead...

Page 9: ...horn and slide the pushrod through the clevis connecting the aileron to the servo Position the aileron in the neutral position and tighten the screws in the adjustable clevises be sure that the pushro...

Page 10: ...th 30 minute epoxy Do not put epoxy on the spars until instructed to do so in the next step Put a coating of epoxy in the wing pockets as well Insert the wing panels into the fuselage and place the pl...

Page 11: ...pendicular to the LE Trim away approximately 1 16 1 6mm of the LE between the holes you made and the inside edge of the elevators 4 Test fit the elevator joiner wire into the holes Lay the elevators d...

Page 12: ...center its position Stand back several feet and view the model from behind Ensure that the stab is level in the fuselage by confirming it is parallel with the bottom wing If not use tape or a weight...

Page 13: ...read a 2x4mm self tapping screw into an adjustable clevis and slide it on a 2x135mm carbon pushrod Attach the clevis to the outer hole of the elevator servo arm 4 Using the pushrod as a guide for the...

Page 14: ...ts Join the wing panels and use tape to hold them together tightly while the epoxy cures Use denatured alcohol to wipe away any excess epoxy A toothpick or something similar can be used to scrape any...

Page 15: ...until the struts can fit properly 9 It is recommended to use 30 minute epoxy for this step the extra working time is beneficial Coat the top and bottom ends of the cabane struts with epoxy and insert...

Page 16: ...lerons These will be used to join the top and bottom ailerons together 12 Center the ailerons and join the top and bottom together using adjustable clevises and the remainder of the 2x215mm aileron pu...

Page 17: ...ree 3x12mm machine screws and thread locking compound Rotate the wheel pants on the axles so that they align with the fuselage 4 Use a hobby knife to cut the covering over the slot in the bottom of th...

Page 18: ...e and hook loop material 2 ConnecttheESCtothemotorleadsandfeedthereceiver lead through the front of the fuselage The excess length of motor leads can be wrapped through the side of the motor mounting...

Page 19: ...being glued in flush with the firewall Be sure the magnets are fully seated before the glue hardens A plastic or wooden tool handle is useful for lightly tapping the magnets in place Apply a skin coat...

Page 20: ...ery useful in this step Do not allow CA glue to adhere the cowl ring to the firewall Apply the CA sparingly in this step using accelerator if desired 6 Carefully remove the cowl and cowl ring from the...

Page 21: ...bby knife to cut the decals from the sheet 2 Be certain the model is clean and free from oily fingerprints and dust Prepare a dishpan or small bucket with a mixture of liquid dish soap and warm water...

Page 22: ...curately measure and set the control throw of each control surface as indicated in the chart that follows If your radio does not have dual rates we recommend setting the throws at the low rate setting...

Page 23: ...start at the recommended balance point and do not at any time balance the model outside the specified range 2 With all parts of the model installed ready to fly and battery installed place the model...

Page 24: ...operational range of your radio before the first flight of the day With the transmitter antenna collapsed and the receiver and transmitter on you should be able to walk at least 100 feet away from th...

Page 25: ...eck the C G according to the measurements provided in the manual 2 Be certain the battery and receiver are securely mounted in the fuse Simply stuffing them into place with foam rubber is not sufficie...

Page 26: ...ound executing various maneuvers and making mental notes or having your assistant write them down of what trim or C G changes may be required to fine tune the model so it flies the way you like Mind y...

Page 27: ...nd power to see how flat the spin will go It is possible to maintain altitude in the flat spin and in some cases it is also possible to climb during the spin INVERTED FLAT SPINS This is the same as th...

Page 28: ...the model during this maneuver Some planes perform better with more elevator deflection and a farther forward C G while other planes prefer a further aft C G and less elevator deflection Elevator to f...

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