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Oct 05, 2010, 01:42 AM
Fan of just about anything RC
SoloProFan's Avatar
Quote:
Originally Posted by kross1 View Post
We had 2 Syma S107's that had a wire break off of the front motor, right where the wire enter the motor. The wire could not be easily reconnected.

I took the REAR motor from 1 bird, and installed it into the FRONT of the other bird, reversing the polarity on the 2 wires when I soldered them to the circuitboard.

WORKS FINE.

The 2 motors (front & rear) are the same, they just have different color leads. You can substitute the front or rear motors, you simply have to make sure you get the polarity correct as they rotate in opposite directions.

Now, why the wires broke, see my next post!!!!!!!
The motors should be different. The brushes inside have a different orientation, so it has less drag on the collector when it turns CW or CCW. You can swap them, but they won't last as long when swapped. More coaxes have this, also indicated by different colors of the endcap, and not just the wires.
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Oct 05, 2010, 02:08 AM
Is it charged-up yet?
Tom DB's Avatar
Quote:
Originally Posted by SoloPro View Post
The motors should be different. The brushes inside have a different orientation, so it has less drag on the collector when it turns CW or CCW. You can swap them, but they won't last as long when swapped. More coaxes have this, also indicated by different colors of the endcap, and not just the wires.
Interesting you should mention that. My R3 does indeed have black and white endcaps, but my R5 has two black endcaps. I hadn't noticed that before.
Oct 05, 2010, 07:14 AM
Registered User
kross1's Avatar
Quote:
Originally Posted by SoloPro View Post
The motors should be different. The brushes inside have a different orientation, so it has less drag on the collector when it turns CW or CCW. You can swap them, but they won't last as long when swapped. More coaxes have this, also indicated by different colors of the endcap, and not just the wires.
Time will tell, I'll let you all know! It's about time to buy new birds, our are so whipped!!!!!
Oct 05, 2010, 07:38 AM
Rather Be flying or Tinkering
jtravel's Avatar
Quote:
Originally Posted by Duck05 View Post
The one S107 we had that displayed the loss of power behavior was not the battery; when swapped out with a new one (along with the PCB protection circuit board) it displayed the same symptom right away. The assumption was the main board caused the issue but never had to verify that as the supplier provided an exchange.
Interesting, I assume this Was the power loss after 2 min issue?
Last edited by jtravel; Oct 05, 2010 at 11:46 AM.
Oct 05, 2010, 11:39 AM
Fan of just about anything RC
SoloProFan's Avatar
Quote:
Originally Posted by Tom DB View Post
Interesting you should mention that. My R3 does indeed have black and white endcaps, but my R5 has two black endcaps. I hadn't noticed that before.
Sounds like someone goofed up during asembly...
Oct 05, 2010, 11:42 AM
Nice day for RC'ing
Redfisher's Avatar
Mine has blacks caps on both.
Oct 05, 2010, 11:48 AM
Fan of just about anything RC
SoloProFan's Avatar
Quote:
Originally Posted by Redfisher View Post
Mine has blacks caps on both.
Wires also same color?
Oct 05, 2010, 12:09 PM
Registered User
edwong3's Avatar

Blank and White


If you guys are talking about the colors of the end bells on the motors, the motor closer to the nose is black, and the rear facing motor has a white 'cap' as you call it.

Happy flying,
Ed
Oct 05, 2010, 12:21 PM
Nice day for RC'ing
Redfisher's Avatar
Quote:
Originally Posted by SoloPro View Post
Wires also same color?
Nope the front motor has blue,red and the rear has black,white.
Oct 05, 2010, 01:54 PM
Is it charged-up yet?
Tom DB's Avatar
Quote:
Originally Posted by Redfisher View Post
Nope the front motor has blue,red and the rear has black,white.
Same here on both revisions.
Oct 05, 2010, 06:23 PM
Registered User
Quote:
Originally Posted by jtravel View Post
Interesting, I assume this Was the power loss after 2 min issue?
That's what I had thought too but one other aspect was after loss of altitude the copter could not get off the ground the battery was not out of power. You could keep running the rotors for quite some time afterward.

With a new, fully charged battery (and new on the battery PCB) it did the same thing leading to the belief the main board was the issue.
Oct 05, 2010, 06:26 PM
Registered User
Quote:
Originally Posted by edwong3 View Post
If you guys are talking about the colors of the end bells on the motors, the motor closer to the nose is black, and the rear facing motor has a white 'cap' as you call it.

Happy flying,
Ed
Quote:
Originally Posted by Redfisher View Post
Nope the front motor has blue,red and the rear has black,white.
All of mine are that way (Black cap red/blue front; White black/white rear).... All rev 3s including the Firebird....
Oct 05, 2010, 06:32 PM
Rather Be flying or Tinkering
jtravel's Avatar
Quote:
Originally Posted by Duck05 View Post
All of mine are that way (Black cap red/blue front; White black/white rear).... All rev 3s including the Firebird....
Same goes for my Rev 5 S107 and Firebird
Oct 05, 2010, 06:39 PM
Nice day for RC'ing
Redfisher's Avatar
Enough talk, Time for a flight!
Oct 05, 2010, 08:29 PM
Registered User

New S107 owner


Hi,

Bought the s107 at a computer fair yesterday for $35.

I used it today, worked straight out of the box. A couple of small crashes but nothing too big.

Eventually the power went, so I connected the usb cable with power switch set to on and the red and blue light was on, a few moments later just the red was on then nothing, an hour later, no charge, no anything.

There's a greeen led blinking on the back too for awhile.

Ocassionally it'll swirl and quickly pita out.

Any trouble testing measures I can take?

Thanks,

Jeff


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