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HomeAircraftHelicopterFlybarless Rotor Head SystemsFutaba CGY › Governor Over-shoot
11-19-2011 04:46 PM  6 years agoPost 1
dasd

rrVeteran

Carol Stream, IL

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I just installed and tested a new 750 and I'm completely satisfied with the product. One question, though, is what controls RPM overshoot when I go into Idle Up? I'm running normal mode with the governor off. It works perfectly, but my GY701 does not do what the 750 does. Thanks.

Formerly SunFunFlyer.

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11-19-2011 06:50 PM  6 years agoPost 2
Dr.Ben

rrMaster

Richmond, VA, USA

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Are you describing an apparent overshoot of your desired rpm before it locks in?

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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11-19-2011 07:00 PM  6 years agoPost 3
rexxigpilot

rrProfessor

Florida

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what controls RPM overshoot when I go into Idle Up? I'm running normal mode with the governor off.
You have the governor OFF. Your stick position and throttle curve is what controls the RPM. Why are you using Normal mode? Do you fly a scale heli and want the heli to slid around the sky like a full scale does? If not, use Heading Hold for better control.

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11-19-2011 07:39 PM  6 years agoPost 4
dasd

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Carol Stream, IL

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Dr.Ben,

Yes, it goes past the set RPM and then settles back to the setpoint.
It does the same for ID1 to ID2.

Rexx,

I use curves in normal and then fly in ID1 and ID2. Don't confuse the gyro and gov. I'm ONLY talking about gov.

Formerly SunFunFlyer.

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11-19-2011 08:09 PM  6 years agoPost 5
rexxigpilot

rrProfessor

Florida

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OK, I see. You are using normal FLIGHTmode and your overshoot is when you go from normal FLIGHTmode to ID1 or ID2. We had this same situation come up during the beta testing of the V-Bar governor. There is(are) a parameter(s) to change which will fix this. Off the top of my head, I can't remember which one or combination of parameters it is - probably Operation Response and/or Governor Gain. I'm sure Ben can tell you.

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11-19-2011 08:13 PM  6 years agoPost 6
dasd

rrVeteran

Carol Stream, IL

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I could have been more clear. It's not a big deal, but I'm also sure there is a parameter that addresses it. The weather here is terrible, so I don't know if I'll get a chance to play with it anytime soon. I thought I'd try the gain first, but I'm all ears.

Formerly SunFunFlyer.

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11-19-2011 10:21 PM  6 years agoPost 7
Dr.Ben

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Richmond, VA, USA

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If you go into the EXPERT menu for governor, you'll find delays for increasing to govetned rpm and decreasing back to a lower governed rpm. Raise the up delay a bit.

Increasing start delay will also help some as well because it will allow your throttle curve to get the head up near or @ governed rpm before the governor takes over. For you idle ups, program in a halfway decent throttle curve; it makes the transition over to governor more seemless when there is less disparity between governed rpm and curve rpm.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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11-20-2011 12:45 AM  6 years agoPost 8
dasd

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Carol Stream, IL

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Thanks Dr. Ben, I'll try all those. I can definitely up the normal throttle curve. Is gain going to buy me anything other than possible hunting?

Formerly SunFunFlyer.

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11-20-2011 01:19 AM  6 years agoPost 9
Dr.Ben

rrMaster

Richmond, VA, USA

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Not in the context of your stated issue. You can assess the need for more gain after you fly the model a bit and judge whether you're seeing significant underspeed or overspeed. The stock gain setting is highly effective...........and conservative; there's room easily to go higher by 10-15% depending on the response of your engine and so forth.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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11-20-2011 01:22 AM  6 years agoPost 10
dasd

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Carol Stream, IL

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Thanks again.

Formerly SunFunFlyer.

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