Welcome to Multi-Rotor UK. Please login or sign up.

Saturday,January 25, 2020, 10:57:47

Login with username, password and session length


Rares Gosav:
17 Jan 2020 17:44:22
Hi guys and happy new year!!!
01 Jan 2020 00:12:50
Happy new year everyone, happy flying.  :beer2: :beer2:
31 Dec 2019 17:06:13
Happy new year all hope 2020 is a cracking year for you  :beer2:
25 Dec 2019 00:00:49
Happy Christmas to everyone.
24 Dec 2019 13:50:56
Seasons greetings to all on this forum have a good one ;)
21 Dec 2019 17:58:42
Have a great time DB. Look forward your projects in 2020.  :beer2:
21 Dec 2019 16:59:17
Have a good one D.B. ~~ :beer2: :beer2: :beer2:
21 Dec 2019 16:14:27
21 Dec 2019 16:13:44
Tbh I've been really busy, not had much time to fly anything and with conditions being crap, hopefully in the new year I'll have some new projects on the go, mostly to do with HAM radio, will certainly fly again soon. FTR I hate FB too   :D Merry Christmas
21 Dec 2019 15:21:30
Merry Christmas  :beer2:
  • Total Posts: 197503
  • Total Topics: 19930
  • Online Today: 28
  • Online Ever: 530
  • (Tuesday,June 26, 2012, 08:34:46 )
Users Online
Users: 1
Guests: 27
Total: 28

Theme Changer


3d - Printworx

Printing 3d Forum

Odd throttle response, almost like fuel starvation. CC3D

Started by Airwave45, Friday,January 30, 2015, 18:37:18

Previous topic - Next topic


I know it';s not, fuel starvation, but, it does look and feel like it.
It if was a carburetted petrol engine, I';d have the fuel lines and filter off.
The quad will run at 30% throttle smoothly.
Once it';s over 40% it surges like a bugger. Does it on all the batteries I have.
from 40 to 60% it runs in fits n starts, over 60% it';ll intermittently spool right up to full power but still surges.

at lower percentages, there is very little voltage sag on the batteries, at full welly, it drops 2 ish volts on peak voltage (recovers immediately the throttle is closed)

Is it a CC3D calibration issue ? seen it before ?


For future reference, should anyone else get this.

Set up is.
4 ESC';s with ESC 1 (front left on the CC3D) with the power wires left on from the BEC back to the CC3D and the other 3 ESC';s with the power wires snipped.

The No.1 ESC (supplying power to the CC3D) was misbehaving over about 45% throttle.
It seemed to be "Surging" over that throttle setting.

Figured that out  by holding the quad at 35% throttle and rotating it nose up.
the aft 2 motors spooled up hard and did not surge (aft 2 ESC';s ok)
Roll it left, surged badly.
Roll it right, both stbd motors spooled up, no surging.
Pitch it forward, surged badly.

any roll or pitch taking load off the port fwd motor let the motors spool fine.
any roll or pitch asking the port fwd motor for more load led to surging.
as this was the one supplying power to the CC3D, it seemed to lead to the whole quad loosing power.
and then the FC noticing and putting in a blast of throttle when it could.

Changed out the port fwd ESC, whole thing smoother than a babys bottom.

Happy dayze.


Glad you got that working as I know nothing about the cc3d controller i didn';t want to throw in random speculation
Not much kit, but what I have I like
Armattan Tilt 2, Morphite 180, Quark 150, Decapitated NanoQX


I';m very glad to have it sorted too !
burned through 4 motors and 6 ESC';s through stupidity (mine)
Have had 4 FC';s on this board, of which 2 have positive faults.
Have had to resolder the PDB lots though lack of skill.
Changed the power lead to the PDB to use different battery plugs
then had a dodgy ESC.

Get your lucky white heather here !

Unbelievably frustrating, and been going on for months.

Tonight, when it flew in the garage, stable, quiet and just reeking of power, I was a happy happy bunny.   :beer2: