Hi, just been testing my Y6 with it's new 6000mah 4S pack and noticed the motors are getting hot. This is affecting the bottom motors more where if you touch them on the base, non rotating part, they are too hot to touch for more than a few seconds. The rest of the motor is hot but can be held without issue.
To check I did another flight with a 3S 4400mah setup and the motors were again getting hot, not as hot but the flight time was 5 mins vs 13 mins.
It's also worth noting with the 4S setup the ESCs were also getting hot, again after a 13 min test flight.
The flight itself basically consisted of a 13 minute hover in loiter mode, I was testing battery times, and consumed 5000mah. The weather for the UK was hot, 25 deg C. The Y6 is a new 2014 B version weighing 1900 grams or so, std config plus 600 gram pack, with std 10 inch props and 850 blue motors.
And finally to the question, is this normal of does something sound wrong?
The only thing I can think I haven't done is balance the props, guide for this would be handy, but I have no vibration issues looking at the data log.
Replies
@DG,
Not that I'm aware of, but I normally have the antennas pointing outward.
Sadie is curious too, but she tends to keep her distance. She makes a great spectator. LOL
Looks very cool, let's hope it runs that way and boosts the flight times.
Fingers crossed for the maiden.... and Sadie's safety.
Hello Y6-Fans
i also had the problem of ESC´s and motors (3dr 880KV) getting very hot. Also the flight time was very short - only 12 min with simple gimbal and Canon S100 - AUW 2750g with Zippy 4s 8000 mAh.
So I ended up buying new motors - EMAX MT 3506 650 KV. After mounting the motors I found that the 11 x 4,7 APC SF props are to small to give enough thrust for the Y6B. After trying different propeller setups i found that my Y6 works best with APC Electric 13 x 4.4 on upper and 14 x 7 on lower motors.
Although the EMAX motors are also rated only 200 W, they don´t get hot even after a long flight.
I still use the 3dr 20A ESCs.
Flight time now is 17 min with same Lipo - AUW 2800g because of heavier props.
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What did you modify to get the props to fit?
Copter was already modded when I bought it, so arms are 295mm (don´t know how long the original arms are) and i use a homemade landing gear.
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Thanks for posting.How does it handle with the larger props on the stock frame?
I ended up making new arms to support up to 14" props for testing the motors for before they go on the new frame; will still fly the 3DR Y6 in stock form, but no more mods and trying to make it do more than it's intended. I may buy the SunnySky 650 motors when it comes time to replace the originals.
Finding square tubes was not easy. No 19mm anywhere in the states that I could find (just .75 x .062+ wall). One place had red, silver and black 280mm long arms 19mm x 1mm wall with the holes drilled but would have had to wait 3 weeks for delivery. The shipping was more than the arms! I finally found this place http://www.aircraftspruce.com/catalog/mepages/alumtubing-sq.php .75 x .049 wall rounded corners. They are about 50g heavier total than the 3 stock arms. I could have lightened them up, but didn't bother (.27g per 10mm hole....lots of holes).
For those interested, here's a link to the 3DR "replacement" arms from jdrones: http://store.jdrones.com/ArduCopter_Parts_s/42.htm they are 280mm vs 250mm (stock length)
This may be too much weight for the body plates, may need to add supports at the attachment points.
@ Tearig
@ Mike Bell
At this time, I plan to swap out lower motors only to see what happens. But I'm awaiting more parts in order to do this.
On a seperate note, I plan to build a second Y6B frame to run the 690kv motors. I suspect what I will find is the 850kv motors are inefficient for the frame especially if yours is configured with gimbals and camera. Mine only has the fpv camera and transmitter yet my copter overheats no matter what tuning, prop balancing, or CG balancing of frame. So I'm going to abandon the 3DR motors for more capable Sunnysky motors.
Will keep all apprised to my build and flight tests.
Lookie lookie at what came in the mail this week. SunnySky x4108S 690kv motors. See attached pictures for my initial mounting test. So far I think I will be able to use these with the 11 inch propellers I have. Unfortunately I ran out of additional materials and now have to wait for them to arrive before I can build out the other two arms.
I've given up on the 3DR 850kv motors. I feel they just won't work as the lower ones no matter what I have done to it will stay cool. And I'm seeing a power loss (loosing thrust) after a few minutes of flight. Randy (DEV) has no answers other than he feels it could be a battery issue but nothing to do with the 3.2 rc9 beta software.
So I'm ditching the 850kv motors and will use the new motors and see what I get out of them.
More to follow.
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Top only?
Tearig,
Not sure what you're asking.
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