Drifting?

[siguy2k]

So i got my blueray all set up, swash level, mixing arms level, blades balanced, etc. When i try to start a hover it wants to "drift" in all different directions. Ive taken a few videos of it. Here is one. The other is still uploading. The heli is all stock except a gy48v gyro.

[Wolfpackin]

All CP helis will drift around a bit, it takes constant inputs to hold a steady hover.
And if you're hovering down low, in the rotor wash or ground effect, the heli will be very unstable.

[siguy2k]

So that looks normal?

[Wolfpackin]

Hard to say since you're still on the ground and I don't iknow your ability to control the heli but...
Your headspeed does sound a bit low. If you want post your Throttle and Pitch curves, motor and pinion and I will check those for you.

It also looks like the tail is not holding well but that could be a function of your headspeed, gyro gain and mechanical tail setup.

When you leveled the swashplate did you level at low, mid and high stick?

[siguy2k]

Motor is the stock one-Alpha 400 Brushless Motor 3500 Kv - Max Burst 23A. Pinion is 12t i believe.

Throttle curve normal mode:0-25-50-75-100
Throttle curve idle up:100-85-80-85-100
Pitch curve normal mode:40-50-67-85-100
Pitch curve idle up:0-25-50-75-100

Collective pitch is 0 at midstick and +9/-9.
I leveled swash at all stick positions.

[Wolfpackin]

You should adjust your Pitch curve to 40-45-50-75-100 and THEN have zero at half stick and +9° at high stick.
The standard Pitch curve always has 50% equal zero pitch and that should be 1/2 stick. Then the heli will lift at just about 3/4 stick.

Then you should raise the Throttle curve.
A linear curve is never a good thing IMO as it does not usually give enough headspeed for stability and tail authority.
The standard beginner Finless Throttle curve is 0-60-80-90-100 or something similar.

Can you hold a steady hover on the sim?
If you can, fix the curves/setup and next time you try to hover get the heli off the ground and out of ground effect.

Finally, you can only determine if the gyro gain is set properly while in a hover. So you need to get in the air, with appropriate headspeed, to see how it reacts.

Don't forget the Finless videos in Heli Skills and Setup 101:
https://www.helifreak.com/showthread.php?t=41692

[siguy2k]

Cool will do man. Thanks for the help. Here is the other video where i got really nervous lol. I dont have my sim yet. Waiting for it in the mail. I have flown my 4ch heli alot though and am very good at it. This thing is another animal haha. Thanks.

[Wolfpackin]

No doubt, a CP heli is not easy to control until you get the hang of it...like balancing a marble on a plate of glass.

I scooted around on the floor just like you for quite a while with my first heli, so don't worry it will come.

Make sure the setup is spot on, watching and understanding the Finless videos will get you there.
Then it might be a good idea to wait for the sim and get profficient with taking off, hovering and landing before trying the real heli.

That said, I learned to hover without the aid of a sim but it was a long difficult journey for me...and lots of crashes.

Good luck, take it slow and if you need anything feel free to PM me if I don't see and respond to your posts.

[siguy2k]

I just changed my pitch and throttle curves and tried it and now the motor spins the whole time unless throttle cut switch is on ??? Also the headspeed is definitlly faster but getting it light on the training gear and it violently spun in a circle? That means something with the gyro correct? Thanks for the help man!

[Wolfpackin]

The second video doesn't look too bad.
It's normal for the heli to drift left on takeoff and the tail seems to be holding OK.
Slightly higher headspeed will be a little scary but should help with stability.

You're on your way.

[Wolfpackin]

Originally Posted by siguy2k

I just changed my pitch and throttle curves and tried it and now the motor spins the whole time unless throttle cut switch is on ??? Also the headspeed is definitlly faster but getting it light on the training gear and it violently spun in a circle? That means something with the gyro correct? Thanks for the help man!

The motor should not turn if you have 0 at low stick, something else must have changed. Make sure you didn't switch Flight Mode to Idle-up.

Not sure why the tail would spin with just higher headspeed unless something is slipping in the tail drive system or you reversed the gyro compensation.
Maybe try just a gradual increase like 0-60-75-75-75 and see what happens.

Also, since you changed the Pitch curve confirm with a gauge that you do indeed have about -2°/0/+9° at low/mid/high stick.

Which way did the Tail spin CW or CCW?
What is the Gyro Gain set at?

[siguy2k]

I changed throttle curve back to linear, 0-25-50-75-100 and pitch to 40-45-50-80-100. And it didnt spin again. I think it might have been because i had the throttle cut on when i tried changing the first time? This radio sucks. You have to plug it in to computer to change anything. I have a t7chp that will be here tomorrow. I will try those curves again after my battery charges.

[Wolfpackin]

Keep at it and let me know how it goes.

[siguy2k]

So i played with it some more. If i set 2 on throttle curves to anything above 35 the blades always spin??? Could this just be the cheapo radio?

[Wolfpackin]

It probably has to do with the ratio of pitch to throttle at the given stick position.
I would double check the pitch to make sure you do have -2/-1/0/+5/+10 with a 40-45-50-75-100 Pitch curve.

If you confirm that, it's not unusual for the heli to turn when there isn't enough headspeed and tail authority to hold the tail.
That's why most people spool up to half stick quickly to get the headspeed up high enough to where the tail will hold.

Does the tail spin quickly and out of control or does it just start to turn?

These issues can also be caused by a less than perfect mechanical tail setup so be careful and maybe double check that you have everything correct.

[nmdesertracer]

Whats your EXPO set at? I got mine at 30%. Def get a good radio DX6I is a perfect starter radio.