Z20A and CC80, HS does not change at diff flat throttle

[tom63]

Does anyone use Z20A 980kv motor with CC80?
HS does not change at different flat throttle in governor mode. Flat throttle in the range from 30% to 100% are given a same result of HS 2150 rpm.

My configuration:
- Full alu head
- Motor Z20A 980kv
- ESC CC80, setting by castle link cable
- Pinion 16T with stock gears
- 550 mm CF blade
- 7s A123

Any advice pls!
Tom.

[Vinger]

You did follow finless's video (CC85HV) on the CC setup for gov mode? Sounds as if your ESC has not learnt your TX endpoints yet, so you have to do initial setup in throttle endpoint mode.

That 16 teeth pinion is a bit large as well, the Z20 980kV likes the 14t one much better.

[tom63]

Thank you for your advice.

Actually I did follow the instruction from Joe Ford, Product Specialist of Castle Creations and also follow the video of Finless for setting CCHV85.

Following are what have been done so far for setting up my CC80:
- After setting throttle travel end points on radio, change ESC setting to heli fixed endpoint mode.
- At heli fixed end point mode, HS reached 1800 rpm at 75% and 1980 rpm at 85% throttle.
- Then change ESC setting to Heli governor high ( Heli governor low did not work, rpm too low), and HS reached:
+ 1800 rpm at 25% throttle
+ 1950 rpm at 30% throttle
+ 2050 rpm at 35% throttle
+ 2150 rpm at 40% throttle
+ 2150 rpm at range of 40%-100% throttle

Then I have tried this Z20A 980 kv motor with stock Gaui ESC 50A, below are outcomes:
- Setting ESC at Governor mode (last setup option with tone bi-bi---bi-bi-bi-bi)
- 1650 rpm at 65%
- 1800 rpm at 70%
- 1870 rpm at 75%
- 2000 rpm at 80%
- 2150 rpm at 85%

Therefore I wonder either my CC80 is manufacturing fault or not compatible with Z20A motor.

I am very disappointed with this CC80 and currently I am using this Z20A motor with stock Gaui ESC 50A. It works fine.

Anyone has same problem with CC80?

[Stallion]

Hello Tom63

I too have the CC80and i had a similar problem. If i am at a Gov setting of under 50% the Motor RPM is not steady. It is like oscillateing. when i go above 50% the RPM is stable but it changes only till 65% then i can go higher but there is no change in Headspeed anymore. I only can change the headspeed within 150 RPM. I am Running an 23T Pinon with the 68T first Gear and get a head speed an 55% of GOV of 2280RPM. I dropped the Gain on the govenor and it helped a bit to lower the Percentage where the Motor is oscillateing.
But i am not realy happy with the CC80 in GOV mode. In Heli Fixed End Point mode it works like a charme.

I also Watched Finnless Vid on the CC HV85.

[istandalone]

i'm running the z20a 980kv and the phoenix 60. i've not set up gov mode yet, as i've got to brush up on my flying before dealing with that. i do run a flat curve in idle 1 & 2 though, and my hs stays constant throughout.

[Vinger]

Hello Tom63

I too have the CC80and i had a similar problem. If i am at a Gov setting of under 50% the Motor RPM is not steady. It is like oscillateing. when i go above 50% the RPM is stable but it changes only till 65% then i can go higher but there is no change in Headspeed anymore. I only can change the headspeed within 150 RPM. I am Running an 23T Pinon with the 68T first Gear and get a head speed an 55% of GOV of 2280RPM. I dropped the Gain on the govenor and it helped a bit to lower the Percentage where the Motor is oscillateing.
But i am not realy happy with the CC80 in GOV mode. In Heli Fixed End Point mode it works like a charme.

I also Watched Finnless Vid on the CC HV85.
Gov mode have to be set up as per Finless's video. Gov mode on all ESC are only really effective from 70% and up, due to the design of B/L motors. You have to do the initial gearing and setup in fixed endpoint and then set the gov mode to get desired headspeed.It is not the ESC that is bad but rather overgearing if you have to use such low gov throttle settings (50%). Change down on the pinion and start over in fixed endpoint, then once you have desired headspeed, go to gov mode ala Finless video.

My CC85HV works like a charm at 87% throttle for 2100rpm H/S

[Stallion]

Gov mode have to be set up as per Finless's video. Gov mode on all ESC are only really effective from 70% and up, due to the design of B/L motors. You have to do the initial gearing and setup in fixed endpoint and then set the gov mode to get desired headspeed.It is not the ESC that is bad but rather overgearing if you have to use such low gov throttle settings (50%). Change down on the pinion and start over in fixed endpoint, then once you have desired headspeed, go to gov mode ala Finless video.

My CC85HV works like a charm at 87% throttle for 2100rpm H/S

Hi Vinger!

I did find my headspeed in heli fixed endpoint mode at about 80% TH. I didn't mention it because i said i did it like finless showed! the problem i have is that the motor speed is not holding steady wenn i am in governor mode under 50 % Gov where i can get my desired headspeed. so i have to open up the TH to make the motor run smooth but then i am about 150 RPM over my desired headspeed.

Vinger you are right about the gearing. I could Gear down to get my Head speed at 65% or 50% GOV but still the Govenor only works in my case from 50% to 65% below that i have the motor problem i described above that there is no change in headspeed anymore. I think the GOV is at it's maximum.

[tom63]

Hi Stallion, thanks for sharing. Mine is even more worst. At heli fixed endpoint, I found my HS 1950 at 80% throttle. And at heli governor high, 1950 HS reached at 30% throttle and HS was not steady. That 's why I change back to stock Gaui ESC 50A and it works fine.

Hi Vinger, problem is at givernor mode HS reached 1950 at 30% throttle while that HS reached at 80% in heli fixed endpoint mode. Then at 30% throttle at governor mode rpm is not steady.

[Vinger]

I have to post this as my CC85HV decided to do the tail kicking thing out of the blue. It started by first not seeing the throttle endpoints and would not arm, had to redo programming and NOW have the kick. Tried all my old settings plus experimented till my throttle cable to the RX went south due to all the unplugging.

CC are promising an upgraded firmware but nothing fortcoming for months now, so

THROW THIS PIECE OF C**P AWAY !!!!!!!!!!!

[mjdee14]

For what CC's cost...that is rediculous...

I love mu CC10's and 25's....even have a cc40 on an ECO8....

But there are so many cheaper units out there today...I know not a lot handle the higher voltages, so you are limited when you want to run above the 6s

[Stallion]

I am running in Gov mode for the last 20 flights or so. But i think it is allways running at maximum. But i can't get lower in Gov mode due to the told reasons. The HS is not steady. I try heli fixed end ponit mode and three different throttle curves. In that mode the CC80 was running perfect.

At the moment i try flips and rolls and stal turns and some times i seem to over torque the motor in GOV mode. I like to see how it performs in Heli Fixed End Ponit mode at a 90% Throttle Curve in ST2. For Normal mode i try a 75% curve and for ST1 a 85% curve.

Some one wrote that a motor is running at peak efficency at about 90% Throttle Curve. i will see if i can max my flight times with my curves compared what i get out of my pack in GOV mode.

If the weather is good tomorrow i will report back!

[skigolfmike]

I've only done the initial setup on my CC HV85 just to make sure the motor runs and set the end points in the TX. I have a CC 35 in my Blade 400 and it works great in governor mode. It took some work to set it up though.

In the process I learned some stuff that my help out.

First of all, in governor mode the throttle % doesn't relate to the equivalent RPM setting in heli fixed mode. Basically you find the 75% and 85% rpm at 0 pitch in fixed endpoint mode, then set your normal and idle-up RPM in governor mode to match. The percentage doesn't matter.

What was interesting when I setup the Blade 400 was the max headspeed in heli fixed mode was 2460rpm at 70% throttle. From there on up, and I went up to 85%, it didn't change. Then, in governor mode, I got 2600 rpm at 68% throttle and 2750 at 72% throttle. Above 72% throttle the headspeed did not increase in governor mode.

Next was setting the governor gain. At medium the tail had a jump about every 2 sec. When I went to low gain I got a slow oscillation. I ended up with a custom setting of 33. It's not perfect yet, but it's pretty good. Also, when I went to governor mode I had to change the spool up speed from low to custom and max it out. FWIW, the other settings are throttle response Medium, low timing, 13Khz frequency. It just takes a little patience and some experimentation to get it right.

Lookit, here's my Blade 400 in governor mode. The flying is not so hot, but listen to how solid the head speed is.
3cIfTx6FEIQ

[xodarap1]

The Z20A 980 lacks pop and is "flat" with a 14T pinion. It seemed a bit better and worked "ok" with a 15T pinion and the stock gears for light 3-D, but the 16T really makes it come alive for harder 3-D and really suits my flying style. It bogs a bit with the 15T or 16T, but the higher headspeed with the 16T makes transitions smoother and more controlled.

The 16T setup gives better flight times in normal mode at lower HS for those that like to just cruise around doing patterns etc.

With mids for S1 set at 80% and S2 at 90%, the RPM is quite steady in both modes and ripping around at 90% there isn't much change in RPM doing stunts. I see no need for using a gov in the mix at all, but to each his/her own.

Why not just find the best gear and pinion setup and then run S1 at 90-85-80-85-90 and S2 at 100-95-90-95-100 to keep it in the best power and efficiency range? .. or at least a flat 90-90-90-90-90?

[istandalone]

Why not just find the best gear and pinion setup
that's exactly what i've decided. i've found that a 15t pinion works great too. 98% flat curve for 7cell a123 and 90% flat curve for lipos, in idle 1 & 2 respectivley. but then again i'm no 3d man. in fact i'm terrible, and am struggling as of late. can't get past flying nose in towards me. *****, i guess lol.