The Flip Thread

DesJardins

Member
Cork! I would have never thought of that one.
BTW, I think you're really going to like those Tiger motors. Even though these that I have are really small, they just sound great. I have a feeling they're going to perform really nice. I'm excited for you, full report with pics and video please.

LOL, yea I wanted something with a small enough diameter where if there is an imbalance it would tip to the heavy side and it works very well!

I really think the T-motors will be the ticket I'm looking for & much more efficient too
 

skipper1

Member
I've read through this thread again and looked at Des's motor. From what I see and have read, I'm taking a real hard look at my OPTO ESC bullet connectors for the F450. Wouldn't it be better just to replace the bullets with 12 or 14 guage wire?

Can someone post a picture of their ESC bullet connectors, the bad ones of course.
 

kloner

Aerial DP
the connectors aren't bad, its the solder joint holding them on the wire that's crap.... alot of what people explain seeing is dry joint,,,, when a wire isn't tinned or when the wire moves while it cools or both

i've had alot of bullet connectors through my hands, solder each one on myself using the right technique and haven't had a problem. when i had dji motors, i had the motor wire break at the bullet, twice. alot has to do with the ease of picking it up at the arm, your fingers go around and hit the bullet.
 

araines2750

Hexa Crazy
I can't believe I am saying this....Sorry Kloner.....I disagree. The stock bullet connector that came on my DJI motors were the problem. They were very loose in the ESC. I made the following modifications as have many...Get better Bullet Connectors or eliminate them all together. I am not saying that the DJI solder joists wer good either, but if you are going to resolder... do youself a favor & replace the bullet connectors.
See this thread:

http://www.multirotorforums.com/sho...-WKM-went-down-like-a-sack-of-bricks!!!/page4
 

kloner

Aerial DP
how can it be loose in the esc? it is a female bullet connector cut with a slice that covers both sides of the pcb and is done with silver solder. You probably noticed how hard it was to remove....... not saying i've seen it all, but i've had 16 dji opto esc's and never seen this loose in the esc part. I've replied to those threads a few times, but then erased since i didn't want to start anything, but the only real thing that can go wrong is the spring that's on the motor side connector gets laxed and needs a bend like using a needle or dental pick and give a short tug to each of the cuts on the motor side... other than that, 2 pieces of metal with a nice snug spring can only do one thing, short together and met electricity through. if that connector was loose, it was bad solder and you pushed on it one too many times.... it is the natural place to pick this thing up, i still catch myself from time to time holding the esc in my forefingers and that's bad

In the room i'm standing typing this is 12 models. 3 complete dji fpv rigs, the zII 3 scale helis, 2 electric helis and 4 electric planks...... every single one of them has bullet connectors from the esc to the motor and there is zero faults..... they all get sent off where i could never get em again and i have zero worries about my bullets... 12x3, that's 36 failure points and no crashy crash

The wire side though,,, they mess that up, they always have. My kit was bought at christmas last year wheni got the arf, it was already outdated with 2215 size motors and black arms...... that one broke the motor wire twice from the above mention

But, i don't have a current dji arf kit so i'll take your word for it, it's just hard for me to push something i'm so unsure of as the connector themselves beeing bad...... these ones i get with suppo motors are piss poor, but have never failed. they come with $18 motors, there definately not anything special.....
 
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DesJardins

Member
Here is my tale after dealing with this for a month now.
I 100% believe the soldering on the bullets is half-***, I also believe the wiring inside the can is sub-par and that's the reason I'm moving on.

I spend $90 bucks buying 4 new DJI motors thinking "ok, I received a few bad stockers" but I'm not confident now.
Even if the bullet connectors are the same I did have a few that were pretty loose and required some changes, the next motors that go on will have a very small piece of heat shrink that goes over the bullets once they are connected to the ESC. This to me will prevent any movement at the bullet connector.


Any other ideas are welcome a I'm trying to avoid a "direct solder job"
 

kloner

Aerial DP
do this

i.php


give each one a light bend... you get enough pressure through that part theres no way metal to metal with a spring is the problem..... miss that spring tension and it's all bets off. I'll show you guys how to do deans too since you probably all have those, brb.
 

araines2750

Hexa Crazy
It is the motor side of the bullet that was my issue. The "springy" separate wrap that makes the contact tight would spin loosely on my bullets. The motor side bullet was hence loose and would not allow a "solid" cannection when plgged into the ESC. Some say the solder the "springy" ring to the base of the motor bullet, but & opted to just replace the enire motor bullet. I have had no issues with the DJI OPTO ESC.
I really respect you Kloner, that is why I started with "I can't believe I am saying this....Sorry Kloner.....I disagree".
View attachment 8612
 


kloner

Aerial DP
i was reminded about this the other day, turned on my radio, turned on my ezuhf and looked back and no ezuhf, touched the deans and it came on...... i see this once a year, have had several models brown out for no reason and absolutely eat themselves form this..... if you run deans and have ever seen horror stories kinda like this thread and bullets, this is the problem. i've seen everything from not quit that arced to flat to inverted arced, that one was hard to put together when you'd try plugging it in, obviously. I try jamming that pick as far back towards the plastic and squeeze the tip. it should get a nice bend back in it

i.php


Also when you solder on a deans, you have to have it plugged into the other end so the bars in the female side don't shift around making this connection even worse.... if your deans plug is hard to put on and take off, that last sentence is you
 

kloner

Aerial DP
the post directly above your last pictures addressed everything your saying......

This isn't rocket science, it's metal touching metal with a spring, if the spring aint springy, then make it springy. Every bullet i've ever had rotates on the center pin, it is suppose to. My helis all have them castle super pooper bullets, there like $13 for 3, and even them have a weird spring albeit different design, but christ, there worth more than the motors i use on this

I fly 200 miles form home, electricity isn't always an option and i carry 4 spare motors for my mr, always have. I regularly replace a motor is a prop breaks int he field.... i use the bullets..... if your out front of the house hovering and all your tools are always around, then screw it, solder the whole bullet together,,, it makes a joint over and past the spring in question
 
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T

trevlan

Guest
we shouldnt be having to do all these MODS to the DJI product. then why bother with DJI and not make a custom multi all together??
just saying this is crap.....
 

DesJardins

Member
we shouldnt be having to do all these MODS to the DJI product. then why bother with DJI and not make a custom multi all together??
just saying this is crap.....

Agreed

i really think it's the motors solder job and I have learned the "$" valuable lesson.
I like the Naza/GPS, frame... But to my eyes AND wallet one of the most important parts seemed to be skimped on... MOTORS
 

DesJardins

Member
T-motors are here

What a quality difference from motor itself down to the bullet connectors!
I can't wait
 
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DesJardins

Member
I was just about to ask if you got your motors. They just have quality written all over them.
Yup, selling all my DJI props and the 4 replacement motors that have 4 flights on them as posted up in the classified section if anyone wants to buy'em and resolder the bullets as I wouldn't use what DJI gives their customers.

Have to be honest!
 


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