OMPHOBBY Challenger User manual

www.OMPHobby.com www.OhioModelProducts.com
Wingspan
49 in（1250mm）
Length
39.6 in（1006mm）
CG: 62mm from the leading
edge of main wings
Wing Area: 28dm² or 434 in²
(3.01 ft²)
Wing Loading: 41.8g/dm²
or 13.7oz/ft² Flying Weight: 1170g or 41.3oz
Motor: Sunnysky X2820
1100KV Outrunner
ESC: SunnySky 40A with 5V
3A BEC
Battery: 3S 11.1V LiPo,
2200mAh (optional)
Propeller: SunnySky Eolo
12x6.5” electric propeller
Servos: 4 of 17g OMPHOBBY
metal gear digital servos. Flight time: 5~10 minutes
OMP Hobby 49” Challenger is a sport RC model airplane built in the traditional way: balsa and film cover.
The airplane features light yet strong structure, low wing load, and abundant power, making the airplane
easy to fly and capable of a lot of advanced aerobatics, such as all P3A and a few 3D maneuvers. This
airplane performs very well in either low or high speed, with great authenticity and precision in response to
radio stick movements, ideal for pilots who graduated from trainer airplanes to the next level of skills.
The optional 49” Challenger receiver ready version is an almost completed kit in factory. Motor, ESC,
servos, Ailerons, elevator, are all installed. Landing gear is preassembled. Propeller is included in the kit. It
takes no more than an hour to put the kit together and ready for the sky.
SpecificationsandPartsRecommendations
CHALLENGERCHALLENGER

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5
6
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Two colorschemesavailable
Packagecontents(receiverreadyversion)
1. Fuselage
2. Lefthalfwing
3. Righthalfwing
4. Horizontal
stabilizer
5. Rudder
6. Tube
7. Tailwheel
8. Linkrods
9. Adhesive
Velcro
10. Landinggear
11. Propeller
CHALLENGERCHALLENGER

*Mainlandinggearhasbeenassembledin
factory.
*Allballtierodsarepreassembled.
*Allservohornshavealreadybeeninstalled.
*Allballjointshavebeeninstalled.
*Hingeslotsarecutinfactory.
*Servoleadstapedforeasyaccess.
*ESC,motor,andservosareinstalled
infactory.
Thefollowingdescriptionsapplytothereceiverreadyversiononly.
Not all parts and assembly works are available in the ARF version.

Installation of Horizontal
Stabilizer
Install the T-shaped plate to the tail and secure
it with screws.
Cut off a small piece of cover film to expose the
hole used for holding the steel of tail wheel.
Attach tail horizontal stabilizer to the fuselage.

Insert the steel wire of tail wheel through the
hole in horizontal stabilizer.
Align steel wire and hinges and put vertical
stabilizer and rudder together.
Secure hinges with thin CA glue.
Drill a hole in the rudder that will hold the
steel wire of tail wheel.
Installation of Elevator
and Tail Wheel

Landing Gear Installation
The mounting screws of landing gear are
installed on the fuselage to prevent missing
parts.
Take out the screws from the bottom of
fuselage with 2.5mm Alan screwdriver.
Align the landing gear to the hole
locations and tighten the three screws.
Application of threadlocker is highly
recommended.

Installation of
Servo Link Rods
1. Servo horns are installed at
center position in factory.
Hook servos to a receiver to
check center point if
necessary.
2. Level the control surfaces,
and set rudder arms at 90
degree positions.
3. Adjust the link rod length by
turning the ball joints to
appropriate positions.
4. Push the ball joint head to
the ball head by using pliers
or hand.
7

Installation of
Servo Link Rods
(continued)
5. Electrify the servos to make
sure all the control surfaces
are installed in the center
positions.
Installation of
Propeller

Lowrate Lowrateexp Highrate Highrateexp
Ailerons 60 40% 100 40%
Elevator 50 30% 100 30%
Rudder 60 30% 100 30%
Flaps 80 ~ 100 ~
Recommended Settings of Dual Rates and
Exponentials of Control Surfaces
ForcustomersupportintheUSA,please
contactOhioModelProductsinOhio.
Tel:+1‐614‐733‐9488 (9am‐5pm,ET)
Email:[e-mail]
Website:www.OhioModelProducts.com
ForcustomersupportoutsideoftheUSA,
pleasecontactOMPHobby inChina.
Tel:+86‐755‐8672‐4337
Email:[e-mail]
Website:www.OMPHOBBY.com
DisclaimerandSafety
•Thisproductisnotatoy.Itisnotrecommendedforchildrenunderage14.
•Flytheairplanebyabidingbylocallawsandrules.
•Flytheairplaneinadesignatedlocation,andalwaysmaintainvisualcontactoftheaircraft.
•Avoidflyingdirectlyoverunprotectedpeople,movingvehicles,andoccupiedstructures.
•ReadthesafecodeofAMAbeforeflight.Theguidelinecanbedownloadedfromthefollowinglink:
www.modelaircraft.org/files/100.pdf