Syma S107 problems – bad batch of gears?

All three Syma S107 helis I purchased recently from rc-fever.com have had issues – the intermediate rear gear (for the top rotor) have suffered from broken teeth, and there was one motor failure (front, drives the lower rotor). The dead motor I think can be chalked up to bad luck, but the gears I think might indicate some larger quality issues in what has up until now been a fantasticly robust and value for money rc heli.

Location of intermediate gear with broken teetch

Syma s107 intermediate gear with broken teeth

I’ve contacted rc-fever.com but so far they don’t seem keen to send replacement gears. Luckily ebay seems to be a good source (search for “s107-09”) – probably not a bad idea to have some spares handy.

3 comments

  1. I had the same problem, 2nd flight in mid air a weird grind sound, turns out the gear did the exact same thing as yours. Ive only had it for 4 hrs…

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