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     Nowdays,All adults should have a cellphone,so he should need a phone case.if anyone who like outdoor sports like bicycle,he should also need a Handlebar phone Holder.     now we have many phone case and phone holder for free. https://qwinout.com/products/free-gift-for-members-phone-holder-or-phone-case-totally-free?_pos=1&_sid=f6a4fd381&_ss=r Totally free !  you need not pay anything and can get a phone case or phone holder as gift please leave us note about the products you want, For example  a phone holder/a phone case for xxx(Your phone model) cellphone we will ship items from overseas,according to our inventory. Any questions,please feel freely to contact  qwinout@gmail.com Each member can...

Hello Everyone Welcome to www.qwinout.com all products Free Shipping 20% OFF after add to cart for all products during 2019.7.17 -2019.7.31

1. The CW on the propeller refers to the positive paddle, that is, it rotates clockwise when viewed from the top. CCW refers to the counter paddle, that is, it is counterclockwise when viewed from above.2.1 inches = 2.54 cm; pitch refers to the height of the highest and lowest points of the propeller rotation3. 9047 on the propeller refers to the length and pitch of the propeller, 90 refers to the length of 9 inches, and 47 refers to the pitch of 0.47 inches.4. The principle of the propeller generating lift: When the propeller rotates, the inclined surface of...

Hello everyone,        welcome to www.qwinout.com       our main products is DIY RC Drone FPV Quadcopter,to improve our user's experience and make better drones,we decide to offer some products for test and reviews.      Here is the process 1.anyone who want a drone or accessories for review,please contact us via email qwinout@gmail.com 2.please send us your facebook page or youtube page or other blog page via email,your local Drone forum would be better. 3.if both of us reaches an agreement,we will offer a coupon,then you can use it to buy on our website directly.please note...

A multi-axis aircraft is a special helicopter with three or more rotor shafts. The total distance of the rotors is fixed and not as variable as a typical helicopter. By changing the relative rotational speed between different rotors, the magnitude of the uniaxial propulsion can be changed to control the trajectory of the aircraft. Take the four-rotor as an example       Motor 1 and motor 2 rotate counterclockwise, motor 3 and motor 4 rotate clockwise, so the rotor's counter torque can be balanced when the aircraft is flying in balance. Vertical motion, that is, rising and falling When...