V977 Thread Only. Lets make this only for V977

[Heliwhisperer]

Are you flying in an area that is close to any HVAC ducting?

When I fly my micros, the air currents in the room make it a chore to keep it in one spot.

Don't own that particular copter, but my 130X moves easily.



HW.

[Wargamer]

Thanks - I hadn't thought of that. It's possible there's some convection given the location of the mini-split in the adjacent room. I'll definitely try another location tomorrow.

Thanks!

[rcpsycho1]

I've been following this v977 modification on youtube for the v977 and it seems easy but wish it were in English so I could ask questions, etc...:

Conversión WLtoys v977 a 2S (5 min 16 sec)

Hope the movie downloads here...I am very interested in doing this to one of my v977's just for the sake of trying it. Any help...thanks in advance!

[Wargamer]

Hehe... I think this is called the "young eyes mod". The last thing I need is a mod that, with a twitch of collective, will take this tiny bird to a place I can't see it.

It does look like fun for those with the requisite visual acuity though!

[rcpsycho1]

Yeah...I know what you mean, I got my canopy and tail boom covered with fluorescent orange stickers so I can front from back to side!

[CJMerkins]

v966 is on clearance at Banggood for 45 bucks!! bought 2. Its the v977 but has brushed motor, still decent little heli.

[CJMerkins]

Has anyone done metal upgrades to their v977? If so how would you rate it?

[helicrack]

It's a great heli to learn cp on ,6g worked great at first but it developed a nasty uncontrollable drift .

Did you ever figure out the drift or has anybody else experienced/fixed this problem?

I have the same issue with mine...drifts hard left once off the ground...

[Blade Scraper]

Originally Posted by Wargamer

Anyone seeing random collective changes on their 977 or K110? I've just been hovering my K110 indoors in 3g mode to get the hang of cp. I generally have no problem except that it routinely makes rapid altitude excursions of 3 feet or so in either direction when the only control input is very minor tweaks of cycle to keep it in place. Not touching the left stick when this happens. It just shoots straight up or straight down...

I have about a dozen flights on it and it's been doing this since the first one.

Mine has been perfect in both modes. No drift or random collective or cyclic changes. I'm not sure if the many failed attempts on the nCPS helped, but I've been flying my K110 indoors in 3D mode with surprising ease - it just feels like a bigger and far less twitchy heli (of course, the 'big' illusion ends when you hit TH and it falls like a stone): steady, but not too slow, lift off and its into a pretty stable hover requiring only the minor cyclic inputs you'd expect on any heli. Extremely smooth and stable, and landing is a breeze (I hit TH an inch above a floor - any higher and it does drop hard).

As someone else mentioned upthread, indoor air currents can sometimes 'push' the heli around a bit. I have observed and adapted to this with all of my indoor helis, whether FP or CP, flybarred or FBL. Since the K110 has the largest disc of any I've flown indoors, it may be more sensitive to it than the others.

Mine was factory bound and required no calibration flight, but you may need to recalibrate yours. I'm not sure if it matters on the K110, but I always put the lipo in first, and then place the heli on a flat and level surface when I connect the lipo. I also haven't changed any settings in the X-6: the pre-programmed curves, rates, and expo have suited what I've needed so far.

[Blade Scraper]

Originally Posted by CJMerkins

v966 is on clearance at Banggood for 45 bucks!! bought 2. Its the v977 but has brushed motor, still decent little heli.

Sounds like what the K100 is to the K110. Great deal at $45. If I saw the K100 go on sale for a similar price I'd pick a couple up too.

[helicrack]

Friend of mine has the V977 and lost a main shaft bearing when the main gear came off in a crash. He ordered new from (who knows) and waited 3 weeks just to find they were thrust bearings when they arrived. I've been looking online for main shaft bearings but the typical descriptions don't discriminate between thrust or main bearings.

Anybody have a source for V977 main bearings or thrust/main bearing combo kits delivered quick?

[Blade Scraper]

Banggood is stocking most v977 parts in their US warehouse. That's where the spare parts kit for my K110 is coming from.

[BurntSalad]

Originally Posted by helicrack

Love my V977 x's 2. Both are stout little buggars.

Question.... Is it simply not possible to auto in with the V977 when you hit TH?

It is, however any helicopter needs to have an autorotation gear, which is kinda like a ike wheel - it allows the motor to drive the rotor forward, but allows the rotor to spin freely when the motor stops. V977 doesn't come stock with an autorotation gear.

[carlototto]

I have tried different ways, batteries are charged, I calibrated the TX, turn it on, then turn the heli, it just shows a slow blinking red light. and no binding.
the servos dont react.

please help, thanks

[badassrx7]

turn heli on then tx should make it bind right

[Boulder53]

I received my V977 today. Did a short flight indoors just to make sure everything was working. I thought it was too windy to go outdoors with it - 5 to 10 MPH with lots of gusts - but the heli handled it just fine. I ran two batteries through it before I ran out of daylight. This looks like an amazing little machine.

[irob]

The original V977 RTF I bought developed a problem after 3-4 months. It constantly but in slow cycles would increase and decrease power to the main rotor. I could get it to hover at a constant altitude for a few seconds. Then it would either climb or descend and need throttle input to correct. Without input it would continue in the direction it picked. The throttle was extremely sensitive and it was difficult to get it to hold an altitude. Once I was able it would start through that cycle within a few seconds. The power would also surge the same in forward flight. So I changed the main motor, the ESC, the main board, bought a BNF to test the transmitter and......because .
The BNF was fine with my transmitter. So I shelved the original until I needed to work on the newer one.
I'll cut to the chase. It still wouldn't hold an altitude and also started losing the tail frequently till finally the tail motor wouldn't turn at all. Replacing the tail motor of course fixed that but Suprise! It completely fixed the surging problem. It now flies like new. It will hold an altitude like it originally did.
Not sure how all this fits together but a fix is a fix. Anyone had a similar experience?
The up side, I got a motor, ESC, main board and a BNF out of this problem.
"Always look on the bright side of life" Monty Python

[Blade Scraper]

Originally Posted by irob

Not sure how all this fits together but a fix is a fix. Anyone had a similar experience?
The up side, I got a motor, ESC, main board and a BNF out of this problem.
"Always look on the bright side of life" Monty Python

My 2nd nCPS had sort of similar symptoms, out of the box and from the first flight (bought new, box still sealed): power would drop, then loss of tail authority. It was like hitting LVC - but within 30 seconds and on all of the many good lipos I tested it with. Unplug the lipo, plug it back in and the cycle would repeat.

I think its the power connection on that nCPS, somewhere between the lipo connector and solder joints on the board. Possibly cold solder joint.

Plan to replace the connector and solder the new wires onto the board, replacing the old one completely. As my experience is not unique there and I've seen many reports of faulty soldering on HH servos in the 180 CFX forum, I think its a design or Quality Control issue. I'd rather just fix it myself, whenever I get to it. I like my K110 a lot more, so the nCPS isn't really a priority. More of "whenever I get around to fixing it" kind of deal.

[Indokast]

Originally Posted by tonys-heli

check this out.....

https://tmkarc1hobby.com/v966-v977-8...-hfv97704.html

looks pretty cool..they need lipos in the store but the swash looks good

Has anyone tried this "big motor" tail on the v977? I just ordered it. My v977 tail blows out too easy in iu mode. Sport flying its ok, but it will kick out like 45 degrees just doing a forward flip to inverted. I cant trust it.

I bought the heli used tho so not sure if they are all like that or if mine is just weak?

Is k110 the same way with the tail kicking out easy?

[irob]

I'm new at this so my perceptions aren't necessarily the best. I have 2 V977s. I bought both the 450mah lipos that come with it and the 520mah lipos Banggood sells for it. It is more stable and the tail holds better with the stock batteries. I don't think the mah rating is the source. The 520s have a 30C rating. The 420s are rated 25C. The difference between the two is really obvious to me. Which batteries did you get with it? The 520s fly longer but I will only buy the stock 420s even though they cost more, if I replace batteries in the future.
But the tail doesn't hold like some other things I own. I've also had instances when the tail rotor was loose and rotating on the motor shaft intermittently and had to press it on harder or replace it.