Frequently Questions of TREX 450

1.T-rex 450 use much C the number of lithium polymer batteries?
A: The general flight paths 8C-10C can be used, recommended for novice 10C battery practice, practice costs will be much cheaper, 3D flight recommended 12C above the battery.

2.how to reduce bomb?
A: The practice that the simulator can achieve this effect, install a Rack can also reduce the loss of the crashes, followed by a practice exercise.

3.Beginners have no need to use carbon fiber paddle?
A: novice machine will inevitably fall, the price is also very expensive carbon fiber oars, the general practice the flight would be sufficient to use the ABS or wood pulp, the strengths of the carbon fiber main blade carbon fiber paddle, except 3d flight (injection molding).

4 novice necessary carbon fiber tail pipe?
A: It is recommended that the end of the metal tube, because the novice is the easiest because the landing is not good to hit the tail pipe, carbon fiber tail pipe by the impact is easy to break, metal tail pipe after impact usually only deformation can repair reuse.

5.Why is my airplane, and wags its tail?
A: The general exclusion of the poor tail rotor mechanical installation, most of the problems is because the gyro sense to spend due to the channel (usually the fifth move) trip transferred to -75%, 75% can generally solve the problem.

6.T-rex 450 need to upgrade pieces of metal can fly 3D?
A: No, the original plastic parts can fly 3D, but be careful not to use ABS paddle, the paddle rigid easily deformed, easy to hit the tail pipe.

7 lithium polymer battery is rechargeable Ni-MH charger?
A: No, because of the different characteristics of the two lithium polymer battery charging must not be over-voltage, over-voltage battery irreversible damage, and may have a fever caught fire and exploded.

8.What is the number of C-in lithium polymer battery?
A: C number of representatives of lithium polymer batteries can withstand continuous discharge current, such as a battery capacity 1000MAH 10C, then the maximum continuous discharge current is 1000mA * 10 = 10A.

9.Lithium polymer battery should pay attention to what matters?
Rechargeable Battery: lithium polymer battery can not overcharge and over discharge, once the over-discharge and over-produce irreversible damage to another battery must not short circuit, once the short circuit, the battery will be damaged. Addition, after charging the battery can not be placed too long, or internal chemical passivation, will not be a large current discharge, the discharge cut-off voltage not less than every single 2.75-2.85v, differ according to the manufacturer. battery once use must go on, can not place a long time. must be placed a long time charge to 40%, single-cell voltage is about 3.8-3.85V on the fridge chilled, not frozen!

10.lithium polymer battery life is how long?
A: lithium polymer batteries generally charge and discharge times for the unit, a charge and discharge of a loop, generally but to charge and discharge 80-100 cycles even more strictly control the use of time and use the balance charge the battery can be extended service life.