So here's the story. I was gifted another toy quad this Christmas. An Avier Stealth. Very similar to the Syma x5c in price and features with the addition of a wifi cam and a 3rd rate mode vs just 2 on the x5.
Flies great and is quite a bit faster than the x5c. Only problem (besides no info or spare parts to be found) is I do a lot of LOS proximity flying and sometimes misjudge the distance of something in relation to the quad. Enter clothesline pole and a broken motor mount. Sense where I am headed with this?
Enter the durability of the syma (my very first drone ever!) which is a year or so old, and still works great btw.

Here they are with upper shells removed. (x5c top)

So lets get to it!
Both use 7mm motors, have the same jst cam plug and even power switch. 
Moving everything over was a breeze!


Cam lead was left dangling on the Stealth. Here its secured nicely under the FC. You might also notice I left the x5c's stock LEDs in place (soldered those in parallel with existing bulb style LEDs from the Stealth)

Thats when I noticed how the motors were wired from the factory! (I knew going in that the x5c has motor and gears facing down vs the Stealths which faced up)

I did not expect to see the motors polarity reversed like this with brushed motors from the factory though lol

So after some deliberation I decided to just undo the reversed polarity vs keeping them rotating in the same direction they have been broke-in with and changing their location. Was curious to see if it unlocked any added power from the motors now spinning in the direction they were intended to. (My experience with some brushed motors that can be reversed is there is usually a power or speed penalty by doing so)

Here is how i mounted the extra LEDs into the top shell



Closed everything up and tested. All is well! Motors spin correctly with no signs/sounds of hindered performance. Lights all work and look good. (imo lol)

Time for some props and a test flight!

As luck would have it. It was almost 60 degrees here in Ohio yesterday! 

Flies great! It was quite nice to see the Syma flying with a bit of snap and a more agressive angle. (Forgot to mention that the gearing on the x5c is taller than that of the Stealths gears) and as a result I can really feel the voltage sag of the 25c 550mah lipos. Going to try something in the 600-700mah 40c range soon. (Could be that I have reversed the motors from how they were broke-in also) time and testing will tell! 

Id like to see also if anyone has used the x5c frame with a hobby grade brushed FC and really made it fly!