Multirotor, multicopter and quadcopter discussion - The Drone thread

I'm not having much luck at the mo :(

Had two lovely flying sessions over the weekend and put 8 packs though the quad on both occasions. Last pack on Sunday (why is it always the last pack?) hit the ground hard ending in a protracted cartwheel manoeuvre down the flying field. Nothing broken (or so I thought). Went to fly again and the board wouldn't arm, beeping, red and blue lights flashing alternately. Gyro issues. Manually recalibrated the gyros and it armed, flew ok(ish) for the remainder of the pack.

Went to fly yesterday and now 3 of my motors are vibrating like mad at about 55% throttle and the quad is oscillating like a motherbiatch. Probably a combo of a borked gyro and wobbly motors.

Last night, tried reflashing the board (both with cleanflight and baseflight) and the in the raw sensor data tab, you can see the gyros wobbling around all over the place. One broken Naze32.

I've balanced the motors as best I can now, I used a slightly heavier screw in one of the prop adapter holes and that seems to have mitigated the issue somewhat. Test fly today with my back up Acro Naze. Will report back.

Have ordered some new motors *sigh* so will wait for those to turn up and rebuild next time it rains.

All of this means I STILL haven't even had time to start on my mini-hexa build :(
 
Nads :( You want that Acro back, gandhi? I haven't had a chance to mount it on anything, only found the motor mounts I needed last night, after a month of on and off searching!

What motors are we talking about?
 
Nah, you're alright, but thanks though :)

I actually bought 4 of them when they were in stock somewhere as I new I would end up trashing one or two and they were dirt cheap!

The motors are the DYS BE1806. 3 of them are very crunchy in the bearings now and I suspect bent shafts too, although difficult to see without taking them fully out.

Tried a flight today and they are better but still causing enough vibes to cause oscillations in the quad. I'll pop the new ones on when they get here tomorrow and see if I can fix up the squiffy set when it's cold, dark and wet in the winter and I have nothing else to do!

It's looking like it might be a bit wet and windy this weekend down here, so I might get the time to start on the hexa project :)
 
If it is the bearings, I read somewhere of someone replacing them with high quality bearings from some specialist website. They are fairly cheap and fairly easy to replace. Shafts are also cheap enough, but from Canada http://rotorgeeks.com/index.php?route=product/product&product_id=153.

I really like these 'lil motors, so much so I've bought 10 more (hex project inbound!) and will be buying a range of spare parts, as you say for a winter project, so hit me up when you want to have a go refurbing them ;)
 
Awww, cheers matey. Will bear that in mind.

Did you get them on the radioc deal of the day? They were only £6 I think but I missed them. I would order from HK international warehouse but with the postage and VAT, I think they would've ended up being a bit more pricey, as well as the wait for them!

Got mine from Banggood in the end, in stock in the UK warehouse and £8ish a pop
 
Got mine from HK, £5.20 iirc, with some postage on top. They are the red version, rather than gold or black that are appearing

Platinum HK account, y0 :o

e: Slow boat postage, never had duty slapped on. Ever. Expedited shipping, almost always been stung. Last order took 8 days to arrive using the cheapest option, so doesn't bother me too much
 
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Just had a look at the HK ones, quite cheap and postage not too bad either. Not sure I could wait 8 days. 2 is bad enough hahaha.

Oddly, for me to get a new set of bearings and shafts from Canada it's pretty much the same price as new motors from HK.
 
True, hence why I've ordered 10! One hex + spares. I am seeing these as my "go to" motor, I don't want a bigger rig, been there, done that. I also like the tinkering aspect as much, if not more than flying, So having £20-30 worth of shafts and bearings, plus a couple of motors on hand means I don't have to wait at all for replacements and I get something to keep the voices at bay on the long, cold night :p
 
Righto,

Changed the motors over for the new ones last night and small improvement, but still have the shakes. I'm at a bit of a loss now.

Was looking at the gyro feedback when I installed them last night and two of the new ones do seem to be slightly off balance. The main problem seems to be that although the vibration is very low, it seems to be hitting some sort of harmonic with the frame and when it starts, I can feel the whole thing thrum in my hand. It never did this before, so it's a little bit weird and only happens at certain throttle points.

I really do not want to strip the whole thing down again unless I have to. Gonna have a crack at balancing them a bit over the weekend first.

Or I might just put it to one side, get the spider set up and see if I have similar problems with that!
 
Hang on, are you running the latest baseflight FW? I hear it's knackered for some people. I've lost half a prop and a Naze32 has been able to bring it in safely flying FPV :p
 
Just pulled the trigger on 8x SunnySkys 2208 2300kv. Upgrade the FPV 250 or build a hex mini.... decisions decisions :)
 
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d_brennen said:
Hang on, are you running the latest baseflight FW? I hear it's knackered for some people. I've lost half a prop and a Naze32 has been able to bring it in safely flying FPV :p
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Nah, cleanflight at the mo. I'm going to try a quick BF flash to see if that helps or changes anything.

It's raining at the weekend so I'm gonna strip it completely and re-build/balance the motors. If that doesn't work I'm going to fly it at full tilt upwards until I lose RC sync or it goes into orbit. Or I might see if I can get it to work underwater hahahaha.

The half a prop thing makes me wonder if it's something else. I can't see how the ESC's would affect it. The only other thing I can think of is that the pololu step down I'm using is only a 300ma one and I'm running the naze, Rx and OSD off it, but it really couldn't be that, could it? The OSD does shut itself down when the battery volts get low?

That would just be weird. And really odd.

Genoma said:
Just pulled the trigger on 8 2208 2300kv. Upgrade the FPV 250 or build a hex mini.... decisions decisions :)
Click to expand...

Which ones are those?

d_brennen said:
SunnySky? I'd look for a hex that supports 6 inchers out of the box
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6" on 4s :)
 
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