After my crash, I had visible damage to the left bottom motor, as the wires got snapped off just as they entered the motor. I have since re-assembled each arm using the side hole with a grommet, and the wires pointed inward.
Ran a motor spin test, and the Number 1 (with Frame 10 setup) twitched and pretty much didn't spin
Next, I switched the ESCs for the motors 1 and 2, and clearly the ESC was not the problem. Had one spare motor after replacing one on the left bottom. I attached it loosely on the ground, and it behaved correctly during the motor spin test.
So although there is no visible damage, the hard landing and sudden stop must have caused some kind of motor problem.
Anyone else experienced this?
Nelson
Replies
hi David,
T-motors is company called tiger motor (http://www.rctigermotor.com/). They make higher end motors - basically better bearings, and overall better build quality. Google is your friend and you'll find plently of info.
I'm sorry to hear about your troubles! I would try to wire that ESC in question to one of your 'good' motors, and on the bench try to reproduce the issue. If it makes the 'good' motor stutter, then you know it's the ESC.
David,
I am using the MT-2216 version 2, 800kv spinning 11" 10x5 graupner props. They have 900kv, and I think 1100kv option as well depending on your application. I am getting a nice 17-22amp hover with my Y6 setup, carrying gopro, gimbal, additional flight camera, telemetry etc.
Ralph are you running a FPV TX? What is your flight time and battery used?
How did you pull the amp draw is in in the flight log? Or just from the screen reading
Hi David,
I was not able to use the circle mounting plates, but the motors come with an "+" shape mount which works perfectly. I can take a picture if you're not sure.
17-22amp hover for all 6 motors is what I meant; that's ~3.6amps per motor so we are way below the threshold. I am using afroesc (30amp)
Best,
Raph
My DIY kit had a faulty PDB and one bad ESC,
I diagnosed from directly connecting motors and then plugging through the PDB
I also found a bad ESC, just would twitch a motor... Possibly it could be repaired? idk I am in the USA and 3DR promptly replaced it....
If this sounds familer you can see my threads and comments tracking the problems I found, ultimatly I think you could use any 20amp ESC with the same specs and firmware SimonK , if need be you can make or relate a PDB... But before all the check all the motors and ESCs direct with a battery...you may find a bad joint ... I felt my solder skills were great but found some porosity in some dirty solder to also give me issues... Be sure to check this simple thing first... I do not like using a voltmeter rather make sure the components function in the assembly... Then if their is issues you can track with a voltmeter
My pdb is the new one with deans/tplug
What I found was a bad ESC and a bad pdb... Which 3dr replaced promptly after I did a video showing the problem.
I would suggest doing a video documenting the issue. I have found many times it is a order of operations issue .. Meaning possibly there is a step missing but I am not sure..
This is a pain but I would try and test each ESC and motor separately with a bat Rx/tx... And see if it is all OK..
Then do the same with the PDB. Ultimatly a new PDB is less than $20 and I would not be surprised that if you got it, and you make a video showing that this fixed the problem that 3DR would provide a credit for the problem.
Ultimatly they have been amazing for me, Armando, Lilly and Fernando seem to be both knowledgeable and well trained as I got quite frustrated with the issues that I had with new equipment and they address each one as well as I could have asked...
Happy to help... Let me know what you find... Also where are you located?
You definitly have a issue... What size props and is this the 3dr y6?
Really the issue could be a few things... Was there allot of vibration plus noise? If so I would check all the props for balance.. And make sure they are on in the right direction... I know when I went through the preflight check I noticed on of my props was on upsidedown on the bottom motor... I had actually flown the day before to test and just felt like the copter needed to be trimmed out but then I saw it was the prop...
The motors on mine are the 850kv or 880kv blue motors from 3dr and I think it may be less than 50% throttle for hold hover even fully loaded with gimbal FPV equipment and a 4000 mah 4s battery...
I would not rule out a power delivery issue... If it was the motor amp draw could really make them heat up if the power is intermittently removed even for a brief ms
Building a DIY y6 I am having issues with not all the motors spinning after radio calibration and ESC calibration, one motor will twitch, seems to be a bad ESC as I switched it to another motor, and it did the same..
Could half of the esc's on a new kit be bad? I have check solder joints, and did resolder but the solution is evading me...
Hi Tearig
The solution in my case was a mis-wired / faulty power distribution board. If you have the same symptoms as me, and it is a brand new copter (not flown before) I suggest you get in touch with the manufacturer
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