TBS Discovery with Naza Maiden flight crash

[02deuce]

Was doing semi maiden (4th pack) doing some what I refer to Pitch pumps to dial in gains in manual mode. Discovery rolls into a flip and crashes. Looking for suggestions as to why?

TBS Discovery with core 1.2 VTX
Naza with GPS
Tiger Motors
Spectrum AR8000
4S
Crash was in manual Mode.

 

[DesJardins]

Honestly it sounded like a prop spun loose!

 

[Search49]

I have to agree sounds like a prop, listen very closely as it flips

 

[02deuce]

That's what I thought, but all props are a nice and tight.

 

[tyor]

maybe bad conection between a motor and a esc. ?

 

[02deuce]

maybe bad conection between a motor and a esc. ?

All connections at ESC are solid unless their is a cold solder at one of the bullet connectors. I guess I will do some more high amp altitude pumps and see if I can duplicate the problem. Then start switching motor sides and see if I can narrow it down.
I hate ghost problems especially with all new equipment.

 

[Jake Bullit]

Have a look at this thread:

http://www.multirotorforums.com/showthread.php?5785-DJI-Naza-sudden-throws/page3

see post 21,seems resoldering bullets may cure it?

 

[DesJardins]

Are you using the nice bullet connectors that came with the T-motors?
Were they all tight when you pushed them into the ESC's?

 

[02deuce]

Stock Tiger bullet connectors and yes they were super tight going into the ESC's

 

[02deuce]

Still Glitching

Flew it again today same thing but only in manual mode, if I give it full collective it climbs fast for about 5 ft then rolls over vertical to the right. Atti and GPS mode its fine. Still looking for suggestions.

 

[DesJardins]

Is if rolling to the same side everytime?

 

[02deuce]

Yes to the right it will try to flip but it you let off the collective it rights itself. I swapped motors last night, cleaned all the connectors on the ECS. will give it another try today to see what it does.

 

[BorisS]

I can only think of it being an issue with one of the motors. Attitude and GPS mode are limit to a certain throttle output thus you motors and ESCs are not pushed to the max. In manual mode this is not the case. You have a spare motor to test it ?. Similar to other FCs also if one motors docent perform like the other when it comes to full throttle action this can happen !

Boris

 

[02deuce]

After swapping motors and cleaning the ESC connector the problem shifted to the left side. Conclusion its a weak Tiger motor hopefully its covered under warranty. Thanks all for your input.