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Other › So what do you do for a governor on an electric?
01-02-2010 05:58 AM  7 years agoPost 1
phil evon

rrApprentice

Central New Jersey

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Don't bash me for not knowing...long time nitro pilot here looking to go electric. Wondering what you do for a governor. Thanks.

AMA 125840

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01-02-2010 06:01 AM  7 years agoPost 2
Heli 770

rrProfessor

USA.

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Most of the ESC has built in gov.

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01-02-2010 06:28 AM  7 years agoPost 3
Flying Brian

rrElite Veteran

St. Clairsville, Ohio

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"All Quoted"
1. What is the difference between Low and high GOV mode in the set up page on the CC link?
You can start with LOW and see if it works, then use HIGH. Better use 'Set RPM' mode - easier.

2. How do I know where to set my TC's at, meaning, what do I want to accomplish with GOV mode?
Permanent head speed. TC should be constant, say at 85% flat or 75% flat. If using 'Set RPM' mode, ESC will say what throttle you should have to maintain speed. Otherwise, you need a tach to determine what HS corresponds to what throttle. Once gain - throttle should be constant. No throttle curves. Just flat. Should be about 85%, if too lower or higher, it is not good. Too low - not efficient, too high - not enough room for ESC to maintain HS. The best to use logger and see how it goes. If not, 85% is good start.

3. Does it work. I hear alot of guys say, the smaller ESC's don't work well. Is this true with the 60amper from CC?
CC25, CC45HV works for me.

4. How do I know when it is working and when it is not working?
If you have logger, you will see that HS is constant. If you do not have logger, you will hear that HS fluctuates - that's not good. If you have not enough powerful motor or battery, it may not work, but in this case your throttle curves will not work either.

5. Why does CC not have all of these definitions of GOV modes listed on there site?
Maybe CC can answer this.

6. Should I just keep the perfect set I have now, but always fly around wondering about questions 1-5, and if they will work to my benifit?
On all my helis, except 4G6 I use governor on Kontronik and CC ESCs.

"All Quoted"

"I just don't Listen" "

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01-02-2010 08:01 AM  7 years agoPost 4
Stet

rrElite Veteran

Key Largo FL

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A three phase motor is inherently governed by the controller running wide open. So operating speed is set by the selection of motor kv, battery voltage and gear ratio. Efficiency is generically highest when systems are wide open.

Headspeed = (KVxVxEfficiency)/(Gear Ratio)

Most "non governed" electric systems run a throttle curve of 100-90-100 which gives a fairly consistent speed (minus change in voltage)

Now there are "governed" speed controllers which go further and adjust and make up for battery voltage changes, and also allow you to set straight line throttle curves which will lower the speed from wide open. Kontronic being the best example. Have not played with Castle's latest offerings. Align controllers have a governor mode, but I have been advised not to use this mode, rather to use the 100-90-100 curve.

When you run wide open, the speed stays essentially the same, and amp draw changes as the load changes.

keepin' it real

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01-02-2010 12:30 PM  7 years agoPost 5
kcordell

rrElite Veteran

O Fallon, MO

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And then there are some who don't use the governor setting at all. I'm sure someone is using throttle curves for the type of model you are looking at. I use the throttle curve only on my Furions, they just are set straight across, no curve to it at all really. It's just finding the number that works for your model.

Team Futaba, Team Synergy/Rail, Team Scorpion, Team Castle Creations, YS Engines, VelTye

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01-04-2010 01:51 AM  7 years agoPost 6
Gyronut

rrProfessor

Martinsville In.

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I always use a flat line throttle curve on all my electrics.

Rick

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