Assembly and Operating Manual SCREAMER Specification: *Length: 20"(510 mm) *Wing span: 22 4/5"(580 mm) *Flying weight: 10 4/5 oz (305g)
Dear customer, Congratulations on your choice of a factory-assembled model aircraft from the jpower range and thank you for placing your trust in us. Very little preparation work is required to get this model ready to fly. To operate your new model safely it is important that you read through all of the instructions and safety information included with your model, before you fly it for the first time. The illustrations in this manual show the Silver version of the model with factory applied decals. The power system Assembly and Operating Manual SCREAMER To fly the SCREAMER you will need a radio cure (harden) to the point where the joint can be control system with at least four channels. 2.4GHz placed under stress. radios systems are recommended, similar to the unit included with our deluxe version. Kit contents The power for the receiver is drawn from the Fuselage, complete with motor, speed controller electronic speed controller s integral BEC system. and servo. Integral wing panels with L.H / R.H. ailerons and The electronic speed controller is located inside of servos the fuselage, in front of the ducted fan. Tailplane and elevator Fin When you wish to fly the model, always make sure Factory-fitted propeller and spinner the transmitter is in the OFF position. Move the 2 X Aileron pushrod, Two Z-bend throttle stick to the OFF position as well. Then 2 X Control surface horn connect the flight battery to the electronic speed 1 X 3S1P LiPo battery,950 mah, 20C controller. The model is powered by a brushless outrunner motor and ducted fan, both of which are factory-installed on the Ready-To-Fly version. The motor is connected to the electronic speed controller which is factory calibrated on the Ready-To-Fly version. All that is required is to charge the Li-Po battery, following the safety instructions, and connect the battery to the electronic speed controller. The radio control system Switch off in the reverse order: disconnect the battery from the electronic speed controller first, and then switch off the transmitter. Glued joints, suitable adhesives Foam safe epoxy is recommended and available from most reputable model retail shops. Trial-fit all parts dry before applying glue. Follow the recommended curing time suggested by the glue manufacturer. Allow the glue to fully 3
Assembly and Operating Manual SCREAMER Fig. 1 -Glue the vertical tail to fuselage. 1 2 Fig. 2 -Photo shows the tail install on the fuselage. Fig. 3 - Glue the nose cone to fuselage. Fig. 4 -Photo shows nose cone have stuck on fuselage. 3 4 4
Assembly and Operating Manual SCREAMER Fig. 5 - Connect the electronic speed controller and servos to the receiver. Refer to the radio instructions for the correct channel sockets and servo lead polarity. 5 6 Fig. 6 - Locate the battery and canopy. Charge the battery according to the safety instructions before installing. Fig. 7 -Turn on the transmitter,put the throttle to the lowest position.connect battery and ESC 7 5
Assembly and Operating Manual SCREAMER 9 8 9 Fig. 8-9 Checking Ailerons and Elevators - Check that the control surfaces respond to the appropriate movements of the transmitter sticks. If not,swap over the connectors at the receiver. - Check the neutral position of the control surfaces;you may need to screw the clevises in or out to correct any discrepancy. -Stand behind the model. - check the direction of rotation of the servos: -Move the aileron stick to the right (a), and the right aileron(a) must rise up, the left aileron (b) fall down. -Pull the elevator stick back towards you (d),and the trailing the elevator stick back towards you (c) -If either function works in the wrong way, correct it using your transmitter s servo reverse facility for that channel. 10 Fig. 10 Checking the power system -Hold the model securely. -Remove any loose objects such as cloths, tools,etc from the area in front of the model, as they could easily be sucked into the ducted fan. -Open the throttle (stick forward): the motor should now run. and you should feel a strong air flow rushing out from the tail end of the model. -Move the throttle stick back to the Motor OFF position. -Disconnect the battery from the electronic speed -Controller and then switch the transmitter off. 6
Assembly and Operating Manual SCREAMER 11 Fig Fig. 11 Checking the models balance -Place the flight battery in its compartment, without connecting. -Mark the Centre of Gravity (CG) on both sides of the fuselage; the position is shown in the photo. -Support the model at the marked points and allow it to hang freely. When correctly balanced the airplane will remain horizontal, with the nose slightly down. -If necessary, adjust the position of the flight battery to achieve the correct CG. -Mark the battery location in the fuselage, so that you can be sure of positioning it correctly after recharging. -Pack scrap pieces of foam around the battery in its final position, otherwise there is a danger of it shifting in flight and altering the model s balance. - Charge the flight battery and the model is ready for flight. Fig. 12 Access to the ducted fan unit and electronic speed controller 12 -The ducted fan unit is accessible from underneath, if you need to carry out maintenance work or repairs. -Ensure that the wire colors match correctly. 7
- Switch the transmitter on, and connect the flight pack - Check the direction of rotation of the motor: when viewed from the front, the output shaft must rotate anti-clockwise. If this is not the case, perhaps because you are using components other than those recommended, swap over any two motor wires to reverse the direction of rotation. Note: whenever you are installing, adjusting or servicing the power system, keep well clear of the rotational plane of the propeller injury hazard. Ensure also that nobody stands in front of the model when the motor is running. - First disconnect the battery from the speed controller, and then switch the transmitter off. - The model is ready for flying once you have recharged the battery. Assembly and Operating Manual SCREAMER - With the motor running at full-throttle, give the Test-flying, flying notes aeroplane a firm launch directly into any breeze, with the fuselage and wings level. Read the sections in the Safety - Allow the SCREAMER to fly straight ahead Notes entitled Routine pre-flight initially; don t initiate turns close to the ground. checks and Flying the model before attempting to fly the model - Adjust the control surface trims if necessary, so for the first time. that the model flies straight with a reasonable - Advice on control surface travels rate of climb hands off. - Check the model s reaction to control inputs. If - The stated control surface travels are just a necessary, you may need to increase or reduce guide for the first few flights. Every pilot will need the control surface travels after the first landing. to adjust the settings slightly to suit his or her individual flying style. Exponential settings - Check the aeroplane s stalling speed at a safe should also be set to suit your personal height. preference. - Keep the model s speed well above the stall for - For your first few flights please wait for a day the landing approach. with no more than a gentle breeze. - If you needed to adjust the trims during the - A good flying site consists of a large, flat, open test-flight, correct the length of the appropriate grassy field, devoid of trees, fences, pushrod once the model is back on the ground, high-tension overhead cables etc. then return the transmitter trims to centre so that - Repeat the check of all the working systems. full trim travel is available to both sides of neutral for subsequent flights. - Ask an experienced modeling friend to - We reserve the right to introduce technical hand-launch the aircraft for you. He should be modifications and suggest that you check our capable of giving the model a reasonably strong, website for updates. flat launch. - The model must be launched directly into any wind. 8
J-POWER GROUP CO.,LTD 5th Floor, A3 Building, Xinjianxing Technology Industrial Park, Fengxin Road, Guangming Town, Bao'an, Shenzhen City, 518107 China Phone: +86 755 33699201 Fax: +86 755 33699203 www.jpower.hk