Syma X5SW Weak motor?

D

Dynochrome

Member
I have tried a bunch of searching but cannot find an answer to this.

Most things I read that indicate a bad motor involves erratic behavior or failure.

My X5SW has never been crashed,but flown a bit guessing 30-40 flights. When I first got it I could power on from an altitude drop and it would recover in a bout 3 ft or so. Now it takes 20ft. and sometimes taps the ground on full throttle (yikes)
It flies just fine zooming around but doesn't seem to have any "torque" to it. The motors work & respond perfect and quick but seem weak. My batteries are all new/well maintained so I'm sure that's not the issue it will indicate this loss of torque even with a fresh charged 1100ma battery.

Is this signs of bad motors?

I'm hesitant of replacing them because they don't seem "bad" like motors I have read about failing,and with searches I don't read anyone else with weak motors only toasted ones. I have a new set ready but wanted to ask someone with some experience. I don't want to remove the jillion screws and solder if it might be another issue.
 
Well, they are brushed motors so after 30-40 flights they are liable to lose torque. If it still flies, fly it till it drops, or replace motors. One bad motor and you won't be able to fly, so they are probably just weaker than new. 30-40 flights, no crash? You doing good.
 
Jackson said:
So basically more than double the mAh of the supplied battery? What do those things weigh?
Click to expand...

Not much more. The whole deal with camera is still under the maximum before having to register. I can fly for 17-20 min with a fresh one! They are a bit of a squeeze to get in but I trimmed the sides a little to the compartment with an exacto.
 
You are missing my point, the extra weight will have a detrimental effect on the motors. Haven't you wondered why Syma doesn't include/use such large batterries?
 
If you've flown "30-40" flights with your Syma having to swap out a motor is not unusual at all. Especially if you're using larger batteries than the stock versions that come with the quad.

I have had 4-5 different Syma models through the years (from the X5c on up) and have had to change motors in all of them. Sometimes sooner than later.

It happens.
 
Last edited:
RENOV8R said:
The way FCBs work, motors will only run at the maximum of the weakest motor. Try some new ones.
Click to expand...

I don't want to try new ones until I am sure this is the problem So far I have not heard from anybody with the exact same issue (weak motors) just failed ones.
Has anyone had a weak but not failed motor that by replacing motors brought back the power? What gets "weak" on a tiny brushed motor? Commutator? Winding's leaking?
In a normal single phase brushed motor a capacitor could cause weakness also.
 
Back
Top