I bought a v-tail 400. I selected and bought a quad of t-motor f80s from a reputable source.
The installation of the quidrino nano and the esc’s was uneventful.
After installing the motors I plugged the esc’s one at a time directly into the AR8000 receiver to calibrate the throttle stick range. Immediately one of the motors starts to smoke. When I was done with calibration I connected the three good motors to the quadrino as per instructions. I then plugged a known good motor into the bad motor’s esc. I was just trying to demonstrate that it was the motor and not the esc. This motor was not mounted in the frame, the other three remained mounted.
I was making a video to show the seller of the motors what was going on. The motors armed. The test motor started perfectly and responded to the throttle fine. However two of the other f80’s was “stuttering” and severly overheating. One seemed to be spinning just fine.
So I pulled the now suspect motors from the frame and moved the test motors from esc to esc. Everything looked fine. Later I plugged the suspect motors into an esc without being mounted to the frame. At that time the tigers seemed to spin up fine. Later they did not.
I suspected that the motors were rubbing against the frame at the top. It did feel that when I mounted a motor to the frame the motor seemed to feel “tight”. So what I did was to mount the motor on the other side of the frame just to test this so that the motor was mounted in the open with no frame around it to rub against. now those motors started stuttering and seriously overheating. And now they do so whether or not they are mounted to anything.
Incredibly frustrating and I can’t find any information that helps. If these are counterfeit motors it would be a shock as they came from a large reputable supplier which is why I do not identify them here.
Sorry if we go straight to the point and maybe you already clarified that but if you take the ESC which is connected to the motor that spin good (TMotor F80) and connect another one (TMotor F80) which is stuttering.
What does it do ? What we try to see here is maybe an ESC calibration issue. Maybe not the right Timing setting.
It stutters regardless. I took a known good test motor I keep on hand and ran it separately on each esc. I also connected each motor to different esc’s. The problem follows the motors. And the first one that went bad was smoking.
There was another motor that was stuttering when mounted and appeared to be working ok when uncounted. Later when I tried it again unmounted it sparked and started stuttering and overheating.
The battery is a 6200mah 4s 45c. Not the permanent battery. I had also used a 3500mah 60c 4s.
This look like a motor or timing issue for your TMotor F80, here is our contact informations for TMotor support: [email protected] Ms. Becky [email protected] Mr. Darrell
Please not that they are just back from China New Year and that’s maybe why you didn’t had any reply from their support in the past.
Also, you might want to contact the shop that actually sold you those motors. They should give you a warranty on that.
All that said, this seems to be a bit small for the VTail 400 platform. Usually we suggest 8" propellers setup.
Here was what the problem was. The screws that came with the motor were so long that they shorted out the stator windings. I’ve got two ruined motors. I just opened a brand new F80 box. Those were the only screws provided. There were no warnings or instructions. There was no mounting adapator or anything like that. The exact contents were the motor, shaft belt and four 3mm bolts.
My problems with tiger support go way back. In the spec page for their MT2814, they give numbers based on using their 1345 CF prop. The problem is, that prop doesn’t fit that motor and nobody makes an adapter. So I simply wanted to find out how I was supposed to use those props. Six attempts, no response. In fact I’m not sure any of their props fit that motor. Check it out… rctigermotor.com/html/2013/P … 12/46.html
I’ll try to contact those people you mentioned. Thanks for that.
That’s unfortunate but it does happen as the manufacturer do not know the thickness of the mounting plate that the customer will use.
Looking at the specification available, this motor cannot turn 13" propellers. The bigger propeller in the spec is a 6x4.5" but depend on the KV version you got.
Sorry I kind of got off topic going into a rant about Tiger and the 13" props but I was referring to their MT2814 motor which if you follow the link I posted will show what I was talking about. They publish specs for a motor using a prop that won’t even fit…
I should probably do a better job of staying on topic. My apologies!
Sure they don’t but they also know there are varying sizes that their product will be used in and this is a known problem. As a responsible manufacturer they have a duty to warn the public of known dangers in using their products. Contrast this with the DYS motors I received that contained a little slip of paper with instructions and different sizes of screws.
And this is dangerous. Imagine if you did this and a screw did get into the stator but did not immediately short it. Now these are fast motors and likely to be used in a fast drone. Then imagine that motor shorts causing the drone to lose control at 70MPH and it hits someone and injures them or worse. This problem must be known by Tiger, and a resulting injury would be reasonably forseeable.
I would love to be the attorney taking that product liability case. It would be so simple to prove liability I could start planning my European vacation from the fees I would earn…
It’s so silly because it’s so easy and so cheap to insulate yourself from liability but companies don’t think to do it until its too late.
You can talk, no problem here that’s what forum are made for.
About the prop, the motor will handle many different propeller brand even the TMotor carbon without issues. I’m not sure what’s the issue.
Almost all motors on the market are made that way, it’s unfortunate and I can say it happened to me in the past as well. (frustrating of course)
I don’t understand why you claim they are not compatible.
The propeller adapter that comes with the MT2814 is a M6 threaded with a nut, the propeller do have this center 6mm mounting option.
Some other motors like the navigator series can be mounted with two screws directly to the motor without adapter.
Eric, you obviously have a lot more experience than me so I’m going to assume you are right. And I will admit that I never ordered from them; I did order some carbon comp props advertised with “T-Motor mounts” that do not fit and probably made that assumption.
What’s really crazy is you have been the only to point out why I was wrong. I certainly gave several other people the opportunity to call me out on it…
As much as I hate looking like a dumb@55, I do appreciate your setting it straight! Thanks for this and all the other questions you’ve answered for me. I will say that the support for the company on this forum is outstanding! Best I’ve seen in the RC field anyway.
Thanks a lot, i do have a bit of a background
That said, we all need to look dumb at one point and it’s they way to learn.
Can you attach some pictures of your propellers ? Maybe you have links to the product you ordered ?
You can attach pictures directly in the forum, see the image bellow.
