Newbie questions

G

gjango

New Member
Hi
i am new to rc modeling and i just got an ARF 450 flamewheel with naza controller...
I would like your assistance...

1 i use 8inch props and 3cell battery...is it ok? I read somewhere that 3 cell batteries go with 10inch props

2. On my first test flights the quad drifts backwards slowly...if i apply opposite stick it stops...can i correct this with tuning?

3 if i manage to make it hover it slowly yaws to the right which i correct with opposite stick


is this normal behaviour?..what is normal attitude to aim for with tuning?

Thank you

gjango
 
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Bowley

Bowley

Member
Hi gjango,

1. ensure all subtrims zero'd on your radio
2.ensure all trims centered on you radio including throttle.
3. connect battery, connect VU to PC and open up assistant.
4. calibrate your radio on the relevant page
5. check your basic and attitude gains, 140 to 180 ish basic should work ok for a start point on elevator, aileron, yaw and vertical. atti gains somewhere around 60-80 should be OK.
6. click 'write' to load new settings.
7. disconnect VU from PC.
8. disconnect battery.
9.Place MR on absolutely level surface, check level with bubble.
10. Switch on Tx and connect battery, wait for flashing amber light (in Atti mode)
11. see how it behaves in flight.

make sure all your motors are on straight and proper, check connections, make sure you have no loose props.
Bear in mind even a gentle breeze will affect it. if it still drifts, reverse orientation with reference to the wind and see if the drift direction is reversed.

I tried 8" props on my 450 and it did not like it. I used 10" but now use 9". I use 3S battery with 8" props on a smaller quad which works fine, you wouldn't want to go to 2S.
 

OneStopRC

OneStopRC

Dirty Little Hucker
Drift can also be caused by poor CG, check your CG and move your battery around to compensate for it. I use a finger under the top plate, one on each side in the middle to get a good idea. Once I know where my CG is, I try to place my battery in the same place every time.

I used to get a lot of right hand drift, just to find my battery was slightly to the right of the top plate. As of now I will run with and sometimes without my GoPro mounted to the front of the 450, this of course throws my CG.

You probably found the blade question in the manual, 8" is for 4S lipos, 10" for 3S lipos. I ran the 8" on my 3S but my flight time was like 8 minutes, put on the 10" and now get between 12 mins with GoPro to 15 without, using 2650 3S.

Happy Flying..
 
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G

gjango

New Member
I put the 10inch props and also checked the motors
I checked the CG and that seemed to do the trick for the drift to the back...

but I still have a counterclockwise yaw drift which seems to be happening is steps..

any suggestions?
 

hershey

hershey

Someday Finally Got Here
Like you, I very new to the quad copters and NAZA. Having said that, my solution to your problem may not work, or may not be acceptable to the purists in this RC type flying.
I made sure everything was setup like Bowley suggests. But after the copter is in the air and either tries to drift or yaw, I use my trims on my radio to correct. This works for me and I don't see any reason not to do it other than most indicate that this isn't a good option.
Take my suggest for exactly what it costs you. Being new, you'll quickly recognize Bowley's input as very positive input. He got me on track.
 

D

Danub

Member
I got a couple of setup questions, just trying to be as specific in my build as possible to avoid . . . . oops!

1. When you guys disable the BEC's do you disconnect the ground wire? (i usually do but this is my 1st naza)
2. What do you guys set your failsafe throttle position for?? (a gouge suggested 40%) I really don't want to mess this one up as it seems to cause the most "challenges for others. Is 15% OK? I know the manual says over 10%. . . what is best?


Thanks for your insight
 


OneStopRC

OneStopRC

Dirty Little Hucker
Danub.. Please do not Hi-Jack threads, start new ones.

gjango said:
I put the 10inch props and also checked the motors
I checked the CG and that seemed to do the trick for the drift to the back...

but I still have a counterclockwise yaw drift which seems to be happening is steps..

any suggestions?
Click to expand...

Check your motor rotations and prop rotations, I had the same issue and found these reasons mentioned..

Remove your props and check these rotations..

Looking from the back to front.

M1 should be front right .. Rotating counter clockwise
M2 should be front left .. Rotating clockwise
M3 should be left read .. Rotating counter clockwise
M4 should be right read .. Rotating clockwise

Install your props with the leading edge turning with the direction of the motor, when the prop spins, you want air blowing down.

Mine had the same yaw rotation, I had my motors and props on the wrong way.... lol
 
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T

tstrike

pendejo grande
Danub said:
Can I power my gimbal servos from a separate bec @6v? Will the gimbal outputs still work??
Click to expand...

Hi Danub, yes you can power your gimbal seperate from the naza power but you'll still need to have a ground and signal wire going to the naza.
View attachment 9209
 

Attachments

  • ubec wiring diagram.jpg
    ubec wiring diagram.jpg
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OneStopRC

OneStopRC

Dirty Little Hucker
Sorry, I was not being a d**k... it is hard to follow a topic when everyone starts posting questions to one topic, it gets kinda weird when answers start to fly..... if you know what I mean.
 

R

rexbirk

Member
deanot said:
Danub.. Please do not Hi-Jack threads, start new ones.



Check your motor rotations and prop rotations, I had the same issue and found these reasons mentioned..

Remove your props and check these rotations..

Looking from the back to front.

M1 should be front right .. Rotating counter clockwise
M2 should be front left .. Rotating clockwise
M3 should be left read .. Rotating counter clockwise
M4 should be right read .. Rotating clockwise

Install your props with the leading edge turning with the direction of the motor, when the prop spins, you want air blowing down.

Mine had the same yaw rotation, I had my motors and props on the wrong way.... lol
Click to expand...

Stupid question, When viewing prop rotation do you do it from above the copter?
 


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