User manual THUNDER TIGER TITAN X50

[. . . ] Before beginning assembly, please read this manual thoroughly. The contents are subject to change without prior notice due to product improvements and specification changes. Thank you for purchasing the Thunder Tiger Titan X50 engine R/C helicopter. This helicopter is an excellent choice for flying enthusiasts like you. [. . . ] Not fix the 3 Tail Rod Guides and not screw tighten the Tail Boom Clamp at this step; the position of these parts may be adjusted later. First tape the belt & insert the end of the belt as shown, and not twist the belt at this step. Line up the concave of Tail Rotor Shaft and the hole of Hub when securing the Tail Rotor Hub onto the Tail Rotor Shaft. Secure the screws with a drop of threadlocking but not over tighten, ensure the moveable parts run effortlessly. Remove the tape from the rear of the belt and twist it toward left by 90° (view from tail to nose), then warp around the Metal Tail Pulley. Assembly the Tail Pulley Case, but do not over close these 2-half of the Tail Case tightly and ensure the Tail Pulley runs effortlessly. Assembly the Tail Support Bracket & Tail Boom Supports as drawing, but do not tighten at this step; the position of Tail Support Bracket may be adjusted later. Ensure the leading edge of the blades are toward proper side as shown. Ensure both the main & tail rotor heads rotate effortlessly in correct direction: turn the Main Gear clockwise, the Main Rotor Grips turn clockwise, and the Tail blades turn counter clockwise. Pull the Tail Boom out slightly by grasping the Tail Unit with one hand and the main frame set with the other. Adjust until the belt deflects by about 0. The distance from the center of the servo horn to both sides of the linkage balls should be the same. The length may vary when using different servo, please re-adjust the length as actual condition. These drawings are printed actual size; you can lay the linkage sets on the left drawings to measure the correct length. You may need to adjust the linkage to ensure the blade tracking. Do not over tighten and ensure the blades run effortlessly. For safety the rpm of using carbon blades should not exceed 2600. At full throttle stick, the carburetor hole should open completely. At low throttle and with the throttle trim all the way down, the carburetor hole should close completely. Adjust the ATV function in your transmitter to achieve the above requirement. Listen to the servo, it should not make any binding noise. Try to keep the throttle ATV between 90% and 110%. [. . . ] (2) Is the carburetor needle properly set?Please refer to the engine instruction manual for the proper needle setting. (3) Does the throttle control arm move properly and in the correct direction according your transmitter command?The throttle stick should never exceed the 1/3 positiom when starting the engine. [. . . ]