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Old Dec 29, 2012, 11:47 AM
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Frequently Asked Questions

Q: What is the Binding procedure?
A: To bind the Tx to the Rx, you first install the Lipo into the Quad. Set it right side up on a level surface. A faint red LED light under the canopy will start to flash rapidly. During this time, you should turn the Tx ON. Give it a few more seconds, and the red LED will glow solid. The binding process is complete. You only need to bind the Tx to the Rx once. For subsequent flights, turn the Tx ON first and return the throttle to zero. This is always a good habit for RC toys. Then you install the Lipo into the Quad. The LED would flash rapidly (searching), then it will go solid (ready). If you forgot to return throttle to zero, there is a safety. The X1 would not spin up until you first return throttle to zero. (See below if you're looking for T9x Binding procedure).

That last point about "return to zero" throttle safety feature, turned out to be a problem for the following member:

There is a misalignment between the control stick and the Tx casing. The case of the Tx became an obstruction for the throttle stick to return to zero. As you could see in the video that the user posted. The X1 has the appearance of being bound to the Tx, but there was no motor functions, because the safety was still on. The throttle was not zero as you could see that there was a bar (or two) of throttle in the Tx display. The issue was solved after the user opened the case and cut a small notch in the case to allow the left stick to go all the way down.

Q: How to switch the Tx between Mode "1" and "2"?
A: The manual talks about switching the Tx between Mode 1 and Mode 2. In reality, it is talking about switching between Mode 2 and Mode 4 flying modes, respectively. To switch mode, you need to first turn the Tx off. By "A" button, the manual means the trim button for the aileron, directly below the right stick. While the Tx is off, push this trim button to the right. While holding the trim button to the right, turn on the Tx. This will cause it to toggle to the other mode. Repeat the same procedure to change back.

Q: Can the Syma X1 use other Lipo batteries?
A: Yes, it can use any 1S 3.7v Lipo with a standard JST connector. The stock battery has a capacity of 350mAh. Capacities of 300 - 600 mAh are recommended. Please note that the stock battery has a built-in OverCharge Protection (OCP) circuit. The supplied USB charging cable depends on the presence of this OCP; otherwise, it would not know when to stop charging. When you buy/use non-stock batteries, there is a good likelihood that they do not have built-in OCP. Therefore, it is your responsibilities to use the proper chargers on these non-stock batteries. Do not use the stock USB cable on non-stock batteries! For suggestions on batteries and charges, see post #2.

Q: What other Remote Controllers would work with the Syma X1?
A: The Syma X1 uses the Flysky protocol. A number of radios are compatible with it. For instance, the WL V929/V949 quad Tx is compatible. I believe the Tx from V939 and V911 would control the X1. The Turnigy 9x programmable radio with the Flysky module works. The DH9116 Tx would likely work.

Q: Does the Syma X1 have to be in the High rate to flip?
A: No, the Syma X1 will flip in both the High and Low rates.

Q: Are the rotors interchangeable with the V949?
A: No, they are not. Although they have the same size and shape in general, the holes that connect to the shaft are different in size and shape. As a result the popular GWS props that people put on the V949 are not a drop-in replacement for the Syma X1.

Q: Are there instructions on how to disassemble the X1? I need to replace a part.
A: Memeber Craigiri gave a good description on how to disassemble the X1, please read his post here.
Also check Oz's post here.

Q: How to get stable hover? My X1 veers off to the Left (or another direction) at lift off.
A: For any Quad with 3-axis gyro, start up initialization is paramount. If it is not initialized right, it will not fly right. Therefore, the best way to initialize the gyro is to first find a level surface. Connect the battery to the X1, and promptly (with in the next few seconds), turn it right side up, place it on the level surface, and do not touch it until it is done initializing. At the end of the initialization, the LED on the PCB board will grow solid. Sometimes it is difficult to see the LED with the canopy on. If that is the case, just give it 15 seconds to be sure.

Q: After proper initialization, my X1 still veers, what's next?
A: If it has been properly initialized, but the X1 still veers, there are two different scenarios. In the first scenario, if it is just crawling slowly away, you could use the trim buttons on your Tx and try to compensate. In the second scenario, if it still veers beyond any trim adjustment, the motors/rotors are unbalanced. The X1 will tip in the direction of the weakest arm. If it tips left/front, that's where you need to check. First, check and see if the rotor looks bent. If so, try replacing that rotor with a provided spare and see if the problem goes away. If it is not the rotor, it could be a the rotor. If that rotor is spinning slow than the rest, even for a little bit and not detectible by sight. Check and see if that motor tends to run hotter than the others. Check for damaged/frayed motor wire, especially if the X1 used to hover well, but doesn't after a crash. Check also if there is any debris the hinders the movement of the shaft/rotor.

Q: One or more rotors do not spin up at the same time with the others, what's wrong?
A: Usually, that doesn't mean anything is wrong, especially when you only give it a tiny amount of throttle, and the X1 has not begun to lift off. When in doubt, re-check the rotors by giving them enough power to lift off. If it hovers, it's fine. Or, you could try holding the X1 in your hand by grabbing it from the bottle and stay away from any spinning rotors. Give it some throttle, at the same time, twist, turn, or roll the X1 in your hand. The gyro should compensate to fight that movement. You'll see then that all the rotors are turning. Otherwise, we have a serious issue.

Q: What is the Binding procedure for optional Turnigy 9x radio?
A: Binding Instructions:
  1. Insert X1 Lipo (Status LED blinks rapidly)
  2. During this phase (rapid blinks), push/hold the Binding button on the FlySky module and then turn on the T9x. Then let go of the Binding button.
  3. In a few seconds, the Status LED will turn into a Slow Blink.
  4. Power cycle (Turn off and then on) the T9x and it should bind (Status LED goes solid)

After a successful bind, I recommend the following for future operations:
  1. Turn T9x on first
  2. Insert Lipo into X1
  3. Place X1 on a level surface, and wait a few seconds, done.

How to Bind the Syma X1 Quadcopter to the Turnigy 9X Radio (14 min 8 sec)

Q: At the end of binding with the X1, do I need to ARM the Tx before flying?
A: Well, it was brought to my attention that since the initial release of the X1, there has been an updated release that causes this behavior to change. So, depending whether you have the older stock or the newer stock, the answer is different. Every X1 has a built-in safety feature that prevents the motors from engaging if the throttle is not Zero at the time the Tx is powered on. If the throttle is not Zero at the time the Tx is powered on, you must return throttle to zero before the motors would spin up. "Arming the Tx" is an extension of that safety feature. It is a procedure that requires the pilot to consciously, push throttle from 0% to 100% and then bring it back from 100% to 0%. The Tx will also beep at these extremes to confirm that the Tx has been armed. Performing such a sweep would "arm" the Tx for flight. If you have Version 6 of the FC, you would most likely have this requirement. Otherwise, you probably do not have it. It is very helpful for each pilot to understand if his or her X1 requires arming or not, because if you tried to arm one that doesn't require arming, you will probably find yours flying way at full speed. Conversely, if you don't arm one that needs to be arm, the Quad probably won't fly.
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Last edited by Heli Pad; Jul 20, 2014 at 01:40 AM.
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