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HomeAircraftHelicopterGasser Model RC HelicoptersOther › GV1 Governer problem - on Spectra G
10-11-2011 01:55 PM  6 years agoPost 21
Doug Darby

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Dallas, Texas

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When I had one hole strip I went ahead and "fixed" the other mounting hole at the same time. My pipe has been tight and leak free since the fix. Works really well.

doug

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10-11-2011 02:41 PM  6 years agoPost 22
Malc1

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EVESHAM,UK

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Hmmmm sounds like a good idea

Minicopter Diabolo - Kosmik200,Pyro750-56
SpectraG + G26 3D Max

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10-15-2011 11:11 PM  6 years agoPost 23
Malc1

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EVESHAM,UK

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Helicoils fitted to both threads and muffler back on.
Still leaking though

I have been down the field to try again with the governer but couldn't quite get to it.

I have moved the throttle servo arm back one tooth and lengthened the push rod.
LmHV in the hidden menu has also for now been put back to 20% from 0%.(decreased previously to help with overspeeding)

Anyway the curves ended up being lower as was thought and I basically had problems setting them back up and keeping the engine running even.

Had a helper with a tachometer today.

Ran out RX battery so knocked it on the head for today,
Didn't even get to switching the governer back on.

Another attempt next time out.

Minicopter Diabolo - Kosmik200,Pyro750-56
SpectraG + G26 3D Max

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02-04-2012 03:06 PM  6 years agoPost 24
Malc1

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EVESHAM,UK

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Been a long time going but back to this issue.

Out flying today and have switched the governer back on for the first time in months.

Engine is running really nicely with no lag or power issues in any flight mode.

With the GV-1 on all is good with the head speeds but still got an issue when in normal mode and climbing and descending I get the two pulses on the motor when throttle/pitch is increased and then decreased.

Switching between ID1 and normal mode still gives me the same hiccup.

All is OK with the governer off - no delay or hiccups of any sort.

I managed to get some very poor quality phone videos on YouTube to check out - the motor can be heard clearly.

Watch at YouTube

Watch at YouTube

Minicopter Diabolo - Kosmik200,Pyro750-56
SpectraG + G26 3D Max

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02-04-2012 03:48 PM  6 years agoPost 25
rbort

rrProfessor

Franklin, MA - USA

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Try
To richen you low needle just a smidgen barely move it and see what happens.

Also if that doesn't help you can play with the throttle servo arm geometry.

-=>Raja.

MA 1005 Hanson 280, 4210 flts
Spectra 27 3DMax, 3288 flts
Whiplash V1-2 Hanson 300, 1570 flts
Whiplash V2 Hanson 300, 402 flts

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02-04-2012 05:48 PM  6 years agoPost 26
Malc1

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EVESHAM,UK

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OK I can try that no problem.

I've not touched the needle today because it has been running very well without the governer on and looking at the plug the settings are more on the rich side but runs well as is.

This is not the governer switching off at mid stick is it?

Maybe when the throttle passes through the mid stick position?

I tried to decend without bringing the throttle down quite so much or so quickly and it seemed to be a tiny bit better.

Switching flight modes it does it everytime though.

I have already played with the throttle linkage to get the curve up higher.

Minicopter Diabolo - Kosmik200,Pyro750-56
SpectraG + G26 3D Max

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02-04-2012 11:52 PM  6 years agoPost 27
rbort

rrProfessor

Franklin, MA - USA

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Also try
The hidden menu settings for the gv-1. Adjust the glmt value from 25 to 20 or somewhere in between.

-=>Raja.

MA 1005 Hanson 280, 4210 flts
Spectra 27 3DMax, 3288 flts
Whiplash V1-2 Hanson 300, 1570 flts
Whiplash V2 Hanson 300, 402 flts

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02-05-2012 12:08 AM  6 years agoPost 28
Malc1

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EVESHAM,UK

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OK Raja
I will have another look at the hidden menu.
I have had a play with both the settings some time back due to a overspeeding problem.

LmHV has been put back to 20% previously as per post earlier but not sure what GLmt is at at the moment.
I'll check.

Minicopter Diabolo - Kosmik200,Pyro750-56
SpectraG + G26 3D Max

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02-05-2012 03:34 AM  6 years agoPost 29
rbort

rrProfessor

Franklin, MA - USA

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No
LMHv should be 0% if you're going to do what I do. If you want to follow someone else, then you can use 20% and whatever other settings they use.

-=>Raja.

MA 1005 Hanson 280, 4210 flts
Spectra 27 3DMax, 3288 flts
Whiplash V1-2 Hanson 300, 1570 flts
Whiplash V2 Hanson 300, 402 flts

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02-05-2012 12:32 PM  6 years agoPost 30
Malc1

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EVESHAM,UK

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No problem Raja I usually follow your recommendations anyway so I'll make sure these two are set accordingly.

So LMHv 0%
GLmt 20-25%

So including very slightly richening the lower needle I have something to try ready for next time out.

I did have a good hour non stop flying yesterday as well as a bit of tweeking and must say it is getting somewhere near again.

Very enjoyable

Minicopter Diabolo - Kosmik200,Pyro750-56
SpectraG + G26 3D Max

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02-05-2012 12:56 PM  6 years agoPost 31
payne1967

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uk

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malc you know you want to go out and play in the snow
and there's no time like the present to try the new set up

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02-05-2012 01:11 PM  6 years agoPost 32
Malc1

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EVESHAM,UK

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I take it you're going down shortly Dave - good luck!

The weather was so much better yesterday until it started snowing mid afternoon.

Wouldn't mind another trip down the field today actually just with the gasser to try it out again but I am going away to Vietnam and Cambodia on Thursday and need to do a bit of packing and sorting stuff out with the girlfriend.

Have to wait until the end of the month now

Minicopter Diabolo - Kosmik200,Pyro750-56
SpectraG + G26 3D Max

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02-05-2012 04:08 PM  6 years agoPost 33
payne1967

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uk

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i'm not so mad these day's
i packed up yesterday when it started snowing and i couldn't fly the plank anymore as the engine mount snapped off on its 10th flight of the day, and a forced deadstick landing into the frozen cow muck pile

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02-06-2012 10:00 PM  6 years agoPost 34
Malc1

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EVESHAM,UK

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OK, even though I can't do any test flying due the weather again I've had another quick look at the heli tonight.

No flying so not yet touched that low needle setting.

Anyway I've been in the GV-1 hidden menu and it turns out that settings required are already set - LMHv 0% and GLmt 25%.

So that's that bit.

Just thinking out loud really but could how the normal mode throttle curve is set cause the problem heard in the video clips?

When running with the governer on.

Minicopter Diabolo - Kosmik200,Pyro750-56
SpectraG + G26 3D Max

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02-06-2012 11:44 PM  6 years agoPost 35
rbort

rrProfessor

Franklin, MA - USA

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You curve looks pretty good
Did you check the gv-1 b/fs screen and make sure it says 0% at idle and 100% at full throttle? If not then reset idle limits so it does.

You can try the glmt number at 22 or 20% (down from 25%) and see if that helps. It affects the way the motor reacts to the loading and unloading and a better value is realized when you do some loops and off off the back side and see how the head speed holds up - that's one test for it.

I just came back today from the field, was warmish buy windier than yesterday which was dead calm. I got 5 tanks in with the Spectra and the full moon came out it looked good in front of that. Will make another post about that hopefully the pictures turned out good

-=>Raja.

MA 1005 Hanson 280, 4210 flts
Spectra 27 3DMax, 3288 flts
Whiplash V1-2 Hanson 300, 1570 flts
Whiplash V2 Hanson 300, 402 flts

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02-06-2012 11:56 PM  6 years agoPost 36
Malc1

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EVESHAM,UK

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Bother.... I was hoping you would say that the curve needed tweaking a bit.

Yeah I've looked at the battery f/safe screens - no problem 0% at idle and 100% at full stick.

Would a quick solution be to turn the governer off in normal mode and just run on the curve?

Don't know whether doing this would stop the problem when switching from ID1 into normal though.

Minicopter Diabolo - Kosmik200,Pyro750-56
SpectraG + G26 3D Max

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02-07-2012 12:12 AM  6 years agoPost 37
ttaylor63

rrApprentice

Floresville,Tx

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How do you get to these hidden menu's inside the GV-1. I found a video on it somewhere but no can't find it anywhere.

And what do these hidden menu's accomplish anyways with the setup with a gasser.

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02-07-2012 12:14 AM  6 years agoPost 38
rbort

rrProfessor

Franklin, MA - USA

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Its really
All in how you position your throttle arm to the servo geometry, the settings on the gv-1 hidden menu, and what curves you end up with. Its like a marriage between all for the best working setup.

You may not be able to get a perfect response every time, like for example if you go up high and drop collective hard and come straight down you may aggrevate it enough to pulse the throttle at the bottom before it settles in, but generally speaking if you fly it normally and avoid these extreme conditions you will find that all is well.

Also servo speed has some effect on it as well, and where everything ends up is how easily the motor starts with no choke cold on pull starting.

-=>Raja.

MA 1005 Hanson 280, 4210 flts
Spectra 27 3DMax, 3288 flts
Whiplash V1-2 Hanson 300, 1570 flts
Whiplash V2 Hanson 300, 402 flts

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02-07-2012 03:26 AM  6 years agoPost 39
James Kovach

rrKey Veteran

canton, oh - US

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The people that I have helped with this very issue, the problem usually came down to either of two things or a combination of them.

1. Running the low needle too rich.
2. Idle is not set properly. Either via the link or the limits in the GV1 setup.

When you pull off pitch after a heavy load or when dropping RPM thru flight modes. The first thing the gov will do is lower the throttle to the lowest limit you have set it up for. If you engine is too rich at this point, the engine loads up and starts to stall, the gov sees this and then raises the throttle to keep the engine running, but RPM is still to hi so it lowers it again, begins to stall, raises it again over speeds and will continue this till it "settles in".

The same situation happens if your idle limit is set too low as well in the GV1 or via the links. Instead of going rich, it just wants to shut down.

This is what I call "Banging off the governor"
You may not be able to get a perfect response every time, like for example if you go up high and drop collective hard and come straight down you may aggrevate it enough to pulse the throttle at the bottom before it settles in, but generally speaking if you fly it normally and avoid these extreme conditions you will find that all is well.
I agree with everything stated there except that part about "if you fly it normally". The GV1 is good at hiding a not so good set up. A decent setup will fly just fine if you as Raja says, "fly it normally and avoid these extreme conditions." Well, if you are attempting to do any type of harder 3D, you will be in these "extreme conditions" quite often during your flights. That is the nature of 3D flight at times.

With all that said, I have since gone back the the RevMax Limiters and getting a better throttle setup is not a headache anymore.

*disclaimer: These are my opinions. Agree or disagree, Your Call :)
Let'r Rip Tator Chip

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02-07-2012 07:24 AM  6 years agoPost 40
Malc1

rrKey Veteran

EVESHAM,UK

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Thanks for the input guy's.

Just wondering though - Is it possible that my throttle servo is too fast for the job in hand here?

Reducing the GLmt number further as Raja suggests is still to try out anyway but I thought I'd mention it.

I'm using a JR DS8911 Digital Servo rated at 0.19s/60 degrees on the throttle.

Minicopter Diabolo - Kosmik200,Pyro750-56
SpectraG + G26 3D Max

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