WLTOYS V686 Not able to fly, just slumps forward

Skybird

Skybird

Well-Known Member
Hello I finally today soldered back the battery leads on my 686, only to find that it won't fly, it calibrates with no problem the props are on correctly the motors work fine it just won't fly, as soon as I hit the throttle it slumps over forward, any clue what might be wrong? Thanks for any help.
 
Some of your props are on backwards, maybe. Another possibility is that one set of motors are spinning faster that the others. I'm no expert but I've heard of other similar problems like yours
 
Hi sorry for the late reply, props are all color matched so no, I wish that were the case easy fix, and as for moto spinning faster not from what I can observe any way to check for sure? Other than that I'm thinking the gyros went bad even though calibration seems to work, so now I'm about to recieve my first real quad drone a DJI Phantom Drone, sure hope I don't run into the same or similar issue.
 
On the side that doesn't lift swap the props (swap black and black or red and red) the colors don't appear to correspond to the direction of the prop when looking at this vid, so even if colors appear in right place can have them spinning wrong direction:

assuming you are talking about this thing:


For quads that use betaflight or any sort of more advanced control option in the flight controller where you can fly "acrobatic" instead of "max angle locked" and auto-levelling then you can eliminate accelerometer from being a potential issue (since it will just use gyros and stick input when in full acrobatic mode, no angle/horizon correction).
 
Looks like I screwed up, the props were on backwards but only because I put the top shell on backwards, I was wondering why the battery cover wouldn't close right, I was certain I had put the shell on correctly, so I corrected it put the props on correctly and it flies. Glad it wasn't the accelerometer So lesson learned, thanks for the tips. So the Phantom is a 2 Vision + I bought on ebay auction for parts or repair, so far I got a bad battery which I placed in the freezer over night, so I can at least test to see if the drone works, the controller seems ok, I was a little too impulsive as this looks like a crashed drone that may or may not fly, anyone with experience on these I'm trying to figure some things out before I call it quits and resell it for P&R. This might not come as a surprise but it was shipped 2-3 day Priority mail and arrive nearly 3 weeks later, long time to wait to find out if it can fixed, meanwhile I could have bought a Phantom 3 by now but I was afraid the same thing would happen with shipping. Oh well.
 
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