Re: If you just purchased a brand new Phantom 2 Vision+ V3 R
burlbark said:
flyNfrank said:
The wires do not separate. The thin wires you speak of are actual a continuation of the same wire that is spun throughout the motor. Replacing that wire will only cause point of resistance. Don't know why people think the wires at their size are what is causing the problem, because it's not!
Oh no this is incorrect for a couple different reasons.
You are correct saying this is the same wire spun through the motor. What you are failing to include is once a motor winding is no longer in the motor it can no longer heat sink to the motor housing and it is no longer being cooled by the circulating air passing by it. Heat produces more resistance and this continues to build. Add the flexing vibrating environment and this is a recipe for disaster.
In the case of the motor leads resistance, by stripping back 1/4" of insulation off the thin leads and inserting them into the larger gauge wire and then flowing solder through that end of wire, well there is no resistance present to speak of until we exceed the current capacity of the motors themselves.
What we are also doing here is adding a flexible section to these stiff leads that have already been shown to fatigue and break at the solder joints. The motors are constantly flexing and twisting and this results in stress on the stiff solder joints.
Once you develop micro cracks in the stiff thin copper leads from vibrations your resistance continues to build and overloads the insulation and the mosfet circuitry. So you can kiss the esc good bye also. This is one reason why we have seen the cooked insulation on wire that should be able to support this current load marginally.
And finally if you dont like this mod, you dont have to do it, and dont have it done. If you have followed any of my posted mods you will see that I have only added reliability to this flying platform.
Jeremy James
I don't understand your situation here. Are you logging in under 2 different accounts? The screen names are different from this post, and the one that started this thread.
Also on the link in the first post must be redirecting some place to someone elses thread on a different website. First thing I did was look for a Hunch, burlpark, or a Jeremy James on the link provided and I didn't have any luck finding either of the 3 names.
So whatever that situation is, I'm going to mention right away that I'm not going to get into any discussion with you about adding 3rd party wiring and points of resistance. Regardless of what is right, and what is not right, on the motors I'm simply not going to argue with you over it.
What I do want to point out is, not everyone is having the exact same issue as you are. And the fact that it is being suggested to put a bandaid over a bandade to end up with an even larger mess, doesn't get anyone anywhere.
And more importantly to me, I try to look out for those coming into this as a new hobby and not get discouraged to the point they want to bail out. When getting in situations where we're encouraging some of those to do things that are not part of their common day is when one problem just causes another problem, and it most instances it's just best to have left things alone. We have 12 points in which we solder. Now we're being encouraged to add additional 12. If those additional 12 soldering points were what DJI was putting out as the final cure, then this would be much different.
So as I say, not everyone has experienced what you have with your failure. Not everyone is removing their top cover and finding burnt marks inside the cover, nor is everyone burning up mosfets on their ESC boards. You are the first I heard of that has claimed to shows signs of a failure on each motor. It would be nice to see pic's of your stress thin wires so others can compare your pics witheir own should they have the covers off at any time.
Personally, I think the problem we are having with our quads dropping from the sky, is either current misfires through the wire insulation, or it's something before the motor/ESC combo. Most likely it's the 2nd one I mentioned, with being before the combo.
Not all, but when most drop, they drop by rolling to side. They roll, then drop. Because they seem to share this same characteristic is why I fill like it's in what communicates with the ESC's.
My recommendation is for all to be patient and wait. Btw, DJI may come up with something that would require everyone to do more soldering. Should that happen then we'll see guys saying how their soldering points are messed up from being soldered on so many times, ect.
