Syma S107 Flybar Replacement (With Pictures)

I’ve had a bunch of emails lately from people asking me how to replace the flybar on their Syma S107. Usually when one person asks a question there are many more wordering the same thing.  So, I decided to document the procedure here.

How do you know if you’re flybar even needs replacing?

Well, the most obvious answer here is if your flybar is broken. Even though the flybar is light and flexible, it can sometimes break in a crash. That’s not the only situation when your flybar might need replacing though. Sometimes the flybar will just become bent or twisted. This could cause the helicopter to shake or twitch in the air. It could also cause strange vibrations or buzzing. When this starts to happen it might be time to replace your flybar.

What parts are required to replace the Flybar

  1. A new Flybar
  2. Two (2) Connect Buckles
  3. One of these little pins

Note: you should be able to re-use 2 and 3 above as long as you don’t loose or break them.

What tools are required to perform the procedure?

Believe it or not, the only tool you need is a small rigid object. I use a slightly unbent paperclip.

Step 1: Disconnect the linkages

First we need to disconnect the two buckle linkages from the flybar. Image 1a below shows where those two buckles are located. To remove the buckles, use your fingers to slide them off as shown in image 1b. When you’re done, the two buckles should no longer be connected to the flybar. Instead they should be hanging down from the top blade grips as shown in 1c.

1a

1b

1c

Step 2: Remove the flybar retainer pin

In order to remove the flybar, we have to first remove the retainer pin that holds it in place. This pin is located in the center of the flybar.

Okay, here’s where you’ll need to bring out your paperclip… To remove the flybar retainer pin, use the paperclip to push against it. Then, continue to feed the paperclip through until the pin falls out the other side.  But, be careful not to lose the pin because we’ll need it later.

Step 3: Remove the Flybar

At this point your flybar should be sitting loose at the top of the rotor mast assembly.

And finally, simply lift the flybar up and off of the flybar assembly.

Step 4: Re-assemble with the new flybar

To re-assemble the flybar just perform the above steps in reverse order.  Start by placing the flybar back on the rotor mast assembly and inserting the retainer pin.  You may need to wiggle the flybar around a little in order to allow the pin to align with the holes on the flybar. Once everything is lined up, use a thumb nail to push the pin flush with the flybar.

Finally, re-attach the buckle linkages by pushing them on to the knobs on the flybar.

That’s it! You should now have a straight  and balanced flybar. Take it for a spin and see how much better it flys.

6 Responses to “Syma S107 Flybar Replacement (With Pictures)”

  1. Brian Stuy
    January 7, 2012 at 4:45 pm #

    I have a neighborhood kid that has the S107. It appears to have broken its top rotor, but I am not sure. It appears that the top rotor is held in place by the two Connect Buckles only, it has nothing else attaching it to the rotor post. Is that the way it is supposed to be, or have some pins been broken?

  2. admin
    January 10, 2012 at 7:03 am #

    Hi Brian,

    Sounds like the same problem as Jerame,

    The inner shaft needs to be replaced. You can get one here

  3. Michael
    February 19, 2012 at 7:40 am #

    I have a s107 that just keep shaking hard and the bar in the back tail feel a little loose so I’m not sure if its the fly bar or the long bar in the back tail that’s the problem.What should I do?I’d really like to get my helicopter flying again its been over a year sitting.

  4. admin
    February 21, 2012 at 7:28 am #

    Michael,

    Something is bent or out of balance. I can’t tell you what based on your description, but I would recommend checking over all of the parts to see if you can find anything obvious. Good Luck.

  5. Lee Hester
    August 25, 2012 at 12:18 am #

    I have recently replaced the flybar and the rotors on an S107 (actually one of the protocol tigers that appear to be rebranded S107′s). Ever since the replacement, it will not take off from level ground. When you try to takeoff from your hand, it will begin to wobble and then will nose over and crash.

    Everything looks good and the model flew well until the original flybar had one of the balls for attaching the buckle break off. I had been flying it for many flights with very chipped up rotors… but it still flew very well even so. But since I had to replace the flybar I decided to replace them too.

    The only potential problem I noted was that the replacement flybar arrived with a small but noticeable bend, not a gradual one, but a sharp one… though very slight. I manually straightened prior to putting it on.

    Any ideas are appreciated…

    Lee

  6. admin
    September 24, 2012 at 8:13 am #

    Lee, Make sure you have the Blades installed in the correct position, that is critical. Also , make sure that your connect buckles are fastened properly, those are easy to miss and the most common cause for “wobble”. Make sure the heli is fully charged, you may even need to replace the battery. If the bend in the flybar is as slight as you say, it should not be a problem, but if it is causing the heli to wobble significantly than something is out of balance, maybe it is the flybar? Good luck.

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