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HelicopterMain Discussion › Throttle Curves - No Governor electric
01-25-2017 06:37 PM  5 months agoPost 1
Heli_Splatter

Elite Veteran

Silver Spring, MD by way of Sidney, Ne - USA

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I was wondering...

How many are using straight line throttle curves for Idle up1 and 2

Is anybody still using the V curves?

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01-25-2017 07:07 PM  5 months agoPost 2
ticedoff8

Key Veteran

Morgan Hill, CA. USA

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I don't fly any micro or mini helicopters.
The last time I did fly a micro (mCPX), I used a flat line TC because it was a POC (Piece Of Cr@p).

On larger helis (380 and up), the "straight line throttle curve" should translate to "use a governor"

I stopped using the V throttle curves when I started using governors
That goes for E or IC.

Flying without a gov is like trying to fly the tail rotor without a gyro.
It can be done, but why bother?

Flying a V throttle curve (E or IC) instead of a gov is a compromise that never gives the best performance for typical flying or 3D smack.

And flying a flat throttle curve without a gov only works for speed helicopters that run flat out all the time.

Believe 1/2 of what you see and none of what you hear.
Fake News will be the downfall of our Republic!

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01-25-2017 07:14 PM  5 months agoPost 3
heliraptor10

Key Veteran

kokomo, in-US

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I have always started with a flat setting (no gov) and then tuned in the V.
So when I first used a governer, I started flat it worked better than anything I've flown before so I left it.

Goblin! where have you been all my life?
RC helis, the original fidget spinners

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01-25-2017 10:23 PM  5 months agoPost 4
BeltFedBrowning

Key Veteran

Kansas City

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I fly all my helicopters on curves. From 250 size to 850mm size blades. I am a sport flier and I like being able to tune the curves. I don't know which is better and I don't want to know. I like fiddling/tinkering.

perfer et obdura; dolor hic tibi proderit olim

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01-26-2017 12:38 AM  5 months agoPost 5
PilotPin

Senior Heliman

Indiana -- USA

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I have one on gov. All the rest are on the curve . With a five point curve I like to make the center three points the same . Then raise the end points 10 points.

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01-26-2017 04:42 AM  5 months agoPost 6
Heli Fanatix

Veteran

Fountain Valley, CA

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Depending on the ESC
- to keep ESC cool ....75% to Wide Open Throttle
- V Curve is the ECONOMY version of a GOV
- I've been a Kontronik GOV Mode 4 connoisseur after I made the switch to using GOV

With any of the above options .... if you have
- good collective management
- knowledge on your equipment
- know how to set up gearing for your type of flying style
- than Any of the above will WORK

* I'm currently using Kontronik Mode 4 on all my electric
* V Curve for all my gasser & nitro

- Scott

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01-26-2017 05:07 AM  5 months agoPost 7
dkshema

rrMaster

Cedar Rapids, IA

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No governor here. Normal is usually 0 85 85 85 85, idle up 1 is flat 85, idle up 2 is flat 95.

The normal curve lets me control startup but gets me to flying speed quickly, then once airborne it's always in idle up 1 or 2 for the entire flight. I land either in a full auto or a "baby" auto from about three feet.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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01-26-2017 03:47 PM  5 months agoPost 8
Heli_Splatter

Elite Veteran

Silver Spring, MD by way of Sidney, Ne - USA

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Thanks for the info, I am old school, I am still using V curves, but plan to change to governors soon.

I have looked, the CC HV120 ESC that I have does not have a governor wire lead out. I do have the MicroBeastX HD ver4.1. I did not upgrade to the pro software. Using Spektrum Transmitter and 8 channel receiver.

Is there any obvious best path for me to governor capability? I am thinking the MicroBeast is probably the cheapest.

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01-26-2017 05:05 PM  5 months agoPost 9
Ronald Thomas

rrMaster

Gainesville, Fl, USA

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You can use curves, but that does not account for pitch changes and it is not accurate.
A governor covers that so HS stays constant across all flight styles and moves. Makes the heli, especially the tail, more consistent....use one..

Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!

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01-26-2017 05:42 PM  5 months agoPost 10
Heli Fanatix

Veteran

Fountain Valley, CA

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Your CC120HV has internal GOV capability in the software.
- select constant head speed
- enter the requested information: pinion / maingear / motor pole / etc
- suggest simple gov with 10% headroom
- the wire coming out is if you plan to use external GOV from a FBL
- external GOV are good b/c it's calculating others factors to proactively Govern your HS

All this might be over whelming and CC Gov is a hit or miss depending on your collective management and knowledge of tunning.

That is why I went with a Kontronik
- plug and play
- set Mode 1 / Mode 4 / Mode 9
- go fly
- no PC / no numbers to input
- excellent GOV with a great internal BEC that you can use a 800mah buffer pack

Another good alternative for an ESC with a great Internal GOV is a HobbyWing & YGE

- Scott

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01-26-2017 06:01 PM  5 months agoPost 11
BeltFedBrowning

Key Veteran

Kansas City

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Because the throttle is a curve, it does account for pitch changes. How accurate that is would depend on your curve. A straight line throttle setting would not account for pitch changes.

perfer et obdura; dolor hic tibi proderit olim

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01-26-2017 06:04 PM  5 months agoPost 12
Ronald Thomas

rrMaster

Gainesville, Fl, USA

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It cannot react quickly enough to be accurate....

Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!

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01-26-2017 07:16 PM  5 months agoPost 13
JuanRodriguez

Elite Veteran

The Villages, Florida

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When the governors first came out , us nitro guys set up the throttle curves as a "back up" in the event the governor malfunctioned...... dont know if that would apply to electrics .....

Been there, done that and old enough to know better.....

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01-27-2017 10:49 AM  5 months agoPost 14
Richardmid1

rrProfessor

Leeds, England

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It cannot react quickly enough to be accurate....
A Throttle curve reacts at the same time as collective pitch whereas a governor has to sense the motor rpm drop first then adjust the throttle.

60% of the time, it works every time!

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01-27-2017 12:22 PM  5 months agoPost 15
dialarotor

Elite Veteran

Traverse City, Michigan

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Improve the throttle curve even more

Always liked throttle curves and then a friend said do a second mix, so the throttle response gets a jump on pitch changes. Mix the throttle to cyclics which adds secondary pitch beyond the pitch used for lift. Say you do a roll, with the mix, you get a little added throttle as the cyclic portion of pitch is added and reduced as the roll cyclic moves back to normal pitch. Play with the small percentage of mix until you can roll cleanly and axially.
Do same for fore & aft cyclic.
Hope I explained that OK. I know when I did it my ungoverned helis flew much better

RapRex Pilot

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01-27-2017 12:44 PM  5 months agoPost 16
Richardmid1

rrProfessor

Leeds, England

My Posts: All  Forum  Topic

Yes I used to have a v throttle curve and around 10% cyclic to throttle mix, works great but still can't lower the throttle further than your mid stick point which is need to control overspeeding on decents. TC's also can't keep the HS constant from beginning to end of flights.

I used to like running a straight TC as it gives you an audible gauge of collective management and the high HS at the beginning meant you can be silly and have some fun and the lower HS near the end meant your nearly done!

60% of the time, it works every time!

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01-27-2017 03:16 PM  5 months agoPost 17
Heli_Splatter

Elite Veteran

Silver Spring, MD by way of Sidney, Ne - USA

My Posts: All  Forum  Topic

Wow, all this time I have been manually adding collective in rolls and loops. Interesting use of mixes, but I am going to move to governor as that is the real solution.

To use the governor function on the MicroBeast HD (software Ver4.1) you have to use a single line input from receiver. I have used a Spektrum receiver of this type with a pixhawk on a multirotor. Are there other choices that work with the Spektrum system? Below is the receiver that I used before.

AR7700 Serial Receiver with PPM/SRXL/Remote Receiver Output (SPMAR7700)

Thanks for a good discussion.

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01-27-2017 06:35 PM  5 months agoPost 18
RAK402

Elite Veteran

Alhambra, CA

My Posts: All  Forum  Topic

I use Throttle Curves (U, not V curves) and Cyclic to Throttle Mixing.

Drag from increasing collective pitch is not a linear function, so (IMHO), a "U" shaped curve is far more efficient.

Cyclic to Throttle Mixing is used to overcome the additional drag from cyclic inputs during maneuvers.

Team KBDD/Compass Team Manger/Experience RC/Team JR Americas/WR Field Rep

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01-27-2017 08:40 PM  5 months agoPost 19
JuanRodriguez

Elite Veteran

The Villages, Florida

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I think that most use the terms interchangeably..... at least I do.... After setting up the "V" curve, I apply expo to it and that turns it into a "U" curve......of course, the curve must have more than just the three points to do that.....

Been there, done that and old enough to know better.....

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01-28-2017 05:16 PM  4 months agoPost 20
Ronald Thomas

rrMaster

Gainesville, Fl, USA

My Posts: All  Forum  Topic

So you can either:
(1) Use curves, V or U, set up mixes and expo to compensate..not as well or
(2) Use a gov and let it do the work and just fly...

Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!

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