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XHELI.COM . Autography FlightPower . Advantage Hobby

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Main Discussion > How do you guys set up your GV-1 govenors?
 
 
jbrundt
Veteran
Location: St. Charles, MO

I just got my GV-1 from Helihut. The only problem is I can't figure out to get the three different rpm settings. I'm using a Hitec Eclipse 7. I have the on/off switch function of the govenor plugged into ch 7. I can turn it the govenor on or off with the CH 7 switch but I can only have the one RPM setting (1700rS2). I keep hearing every one talk about how great the govenor is and that they can get 3 different rotor RPM setting for NOR, Idle up 1 and Idle up 2. That's well and good for them but I sure as heck don't see it.

So far all I have been able to do is get just one rotor RPM setting and that just by switching the unit on or off via CH 7. I still have my 3 position switch for NOR/ST1/ST2 that will control my pitch curves. I am assuming since that when the govenor is ON it will overide the throttle curves. I have no way that i can see to inhihibit those on the radio.

Maybe I'm missing something here. I'm feeling pretty dense now and maybe this was a waste of money. Also the magnets are very fragile. I took them apart to inspect them then the magnetic force attracted them back together and one of them chipped. Very strange.

Jeff
03-09-2002 Over year old.
HOMEPAGE  
 
 
rotorwash
Heliman
Location: SoCal

I have the governor on/off set to the gear channel.
I turn the governor off to tune engines, etc. I have the idle-up switch change rotor speed (aux3 on the JR 8103).

Normal 1500
Idle-up1 1600
Idle-up2 1700
03-09-2002 Over year old.
 
 
rotorwash
Heliman
Location: SoCal

As David sez... aux3 = channel 8 on 8103
03-09-2002 Over year old.
 
 
jbrundt
Veteran
Location: St. Charles, MO

OK...I think I'm beginning to understand. With the Eclipse all I get is the option to have the govenor either on or off. I can live with that. I take off in normal mode anyway so when I get to altitude I can switch the govenor on then just go back and forth on the 3 pos switch for the different pitch curves. I never did understand the real need for requireing different throttle curves as long as the goal was to maintain constant rotor RPM. With a govenor all that should be solved. Right?

Now ,I have a concern if I hit the throttle hold switch. Since the govenor might be switched 'on' and I try to engage THR HLD will the throttle hold function just be ignored and the motor still keep going at whatever setting is needed to maintain the set RPM.? Will I have to turn the govenor off to get throttle hold to function?
03-10-2002 Over year old.
HOMEPAGE  
 
 
helifan
Heliman
Location: Hamburg / Germany (4 years in L.A., CA, USA)

I don't know the Hitech radio and the GV1, however, I use another speed control with my Futaba radio. Maybe my $0.02 will help.

I'll turn on the controller when I switch from normal to Idle-up1 mode and then increase the head speed when changing to Idle-up2. The rpm is programmed in the AFR on channel 7 where the controller is plug into the receiver too. I programmed a straight instead of a diagonal and move it up and down to set the desired rpm. For example in normal mode 0%, Idle-up1 20%, Idle-up2 80% and throttle hold 0% again.

As said, I don't know your radio and therefore if you can program ch 7 onto your idle-up switch and then use AFR to change the settings.

Hope it helps,
Holger
03-10-2002 Over year old.
 
 
mighk
Heliman
Location: Boise, ID

mine set itself up! I mean... it HAD to... it worked perfectly the first time out and I have no clue what I did!

m
03-10-2002 Over year old.
 
 
jbrundt
Veteran
Location: St. Charles, MO

got the govenor to work like it's supposed to

I had an inspiration last night while I slept and this morning I woke with the answer clear as a bell in my head.

First off I'm using a GY-240 gyro so CH 5 is free on the Rx (just a plain old single rate gyro). Into this slot I plugged the AUX (rpm) lead from the govenor control amp. Now here's the neat thing; on the Eclipse when you plug your gyro gain plug (if you use a GY-401 for example) into CH 5 you set the ATV's for the gyro on the Tx menu for each position on the NOR/ST1/ST2 switch. The same holds true for the govenor. Instead of the ATV's being for a gyro they are working for the govenor. (Perhaps Hitec could add some notes to this effect in future releases of the radio manual......)

Lo and behold when I set the ATV for 0% in NOR, 50% in ST1 and 100% for ST2 the 3 different speed settings on the govenor amp appeared when the 3 position switch was toggled to it's respective setting. All I needed to do was set the desired RPM on the govenor control amp for each respective 3 pos switch position (NOR/ST1/ST2) and Viola! that was it.

I then plugged the remaining AUX (on/off) lead into the CH 7 slot of the Rx. I can now turn the govenor on and off with CH 7. I know some of you prefer to use the stick position feature to turn the govenor on and off but for now I'll use the switch.

I was able to test fly it today as well and it worked perfectly. It was nice to just switch it on and the head speed was maintained. I set the RPM's in NOR for 1500, ST1 is 1600rpm and ST2 is 1700rpm. More than enough to do aerobatics. The Raptor 60 seems to hover nicely with a bit of a lower head speed and 1500 seems a bit high so I may try 1450. As for aerobatics 1600rpm is more than enough and at 1700 the head really seems to be at it's limit. Needless to say I didn't spend much time at that higher setting. Of course I may have to tweak the pitch curves a bit Of course I forgot to try out the Throttle hold (Doh!) to see if it disabled the govenor while it was on. I'll try that later this week.

For now everything is working great and I'm able to take advantage of the govenor's features as advertised. Thank you soooo much everyone for all the help and the words of encouragement. It means a lot to me......

Jeff
03-10-2002 Over year old.
HOMEPAGE  
 
 
helifan
Heliman
Location: Hamburg / Germany (4 years in L.A., CA, USA)

Congraulations and enjoy flying with your GV1.
03-11-2002 Over year old.
 
 
z11355
rrMaster
Location: 10000 is enough time wasted.

I've had success doing that by changing the value of StSw
on the GV1.

I just did it a few days ago. Out of the box, I use only the
flight mode switch to control the GV1. It was fine except that
when I hit HOLD, it would still be engaged. Changing StSw
fixed it.
03-11-2002 Over year old.
HOMEPAGE  
 
 
jbrundt
Veteran
Location: St. Charles, MO

Hi Guys,

As I said in my post I have not tried the throttle hold switch YET. It may work, it may not. According to the manual the Throttle hold has priority over everything. If it does not work then I will try to mix in CH 7 with throttle hold so that when THR hold is engaged it turns off CH 7 and thereby the govenor.

If that won't work then I'll use the stick postion switch feature of the govenor for switching it on and off. It may not be my preferred way but I can live with it. Besides, throttle hold is basically for doing PLANNED autos. So if I am planning to do autos then I will turn the govenor off. I still have the throttle curves programmed in and they do function if the govenor isn't in use. And if the engine flames out then it really is a moot point whether the govenor is on or off

Z, your suggestion may have been in the back of my mind and could be the cause for my sudden burst of insight

Thanks again guys for all the input.

Jeff
03-11-2002 Over year old.
HOMEPAGE  
 
 
The_Dave
Veteran
Location: Las Vegas, Nevada

Interesting Reading....

All very informative. I do have a burning question??? Why do you need 3 different speed settings? I thought the whole idea behind a governor is to keep a constant RPM?? I might be able to buy into a two speed setup like some of the FAI guys use but three? Enlighten me, as I can't wait to hear the reasoning!

Mark McAlpine - 2005 - We will never forget.
03-11-2002 Over year old.
HOMEPAGE  
 
 
z11355
rrMaster
Location: 10000 is enough time wasted.

cause we can

I just use 2 speeds (my normal aerobatics speed and ballistic).

Off in Normal.
03-11-2002 Over year old.
HOMEPAGE  
 
 
maybeim
Senior Heliman
Location: Stockton, California

Dave,

The reasoning is:

Idle up norm: for hovering (1400 to 1500 rpm)

idle up1 : for basic flight and simple aerobatics ( 1500 to 1700 rpm)

idle up2 : for 3D ( 1700 to 1900 rpm)

These are approximates and adjusted to individual helis and preferences.

The faster the main rotor speed the quicker the controls become, so in a hover it's nice to slow the controls down a bit, but in 3D it's all out war and the quicker you can comfortably control your heli the cooler a pilot you become.

anything above 1900 rpm is probably a little dangerous for you and the mechanical limits of the heli.

now I could be wrong on all this, but then again.

Paul A.
03-11-2002 Over year old.
 
 
The_Dave
Veteran
Location: Las Vegas, Nevada

I would say your wrong, how in the hell would you ever get a consistant setup like that? If the machine is to "twitchey" in a hover, use your dual rates or develop a softer tuch.

But I too could be wrong.

It is all good...


Mark McAlpine - 2005 - We will never forget.
03-11-2002 Over year old.
HOMEPAGE  
 
 
maybeim
Senior Heliman
Location: Stockton, California

dave,

thanks for correcting me. Oh, I did not mention anything about pitch curves in all idle ups and throttle hold, but I'm sure you all ready know about those things. Some people do not use a govenor at all and rely on the transmitter for setting rotor rpm.

I use expo for softening the controls.

Most of the info I got from Todd Bennett when I attended his school, very informative.

Paul A.
03-11-2002 Over year old.
 
 
maybeim
Senior Heliman
Location: Stockton, California

FuryFlyer,

Yes, that is the science behind main rotor rpm.

Minature Aircraft makes the Optical Heli Tachometer RPM Range 1000 - 2000 for getting that sweet spot between engine and main rotor.

The setup is done with the govenor off and in max pitch mode (10 deg posistive or 11 if your machine is setup for that)

Someone holds and uses the tach while the pilot climbs straight up, basically loading the engine to it's max with full collective available. adjusting the high end needle valve will show an increase in rotor rpm to a certain point, then the main rotor rpm starts to drop off at a certain setting. Back off the high end needle a few clicks to keep the engine cool and wa-la a perfect setting. Then when you use a GV-1 you know you are not loading the motor beyond it's capabilities.

My usual disclaimer inserted here

Paul A.
03-11-2002 Over year old.
 
 
jbrundt
Veteran
Location: St. Charles, MO

finding the max rpm with the govenor off?

I've read the GV-1 manual and re-read it and tried to do it yesterday but how do you get the unit to record the max rpm acheived then display it. When I go to the max screen on the control amp it always reads zero. I try to use the data +/- keys but that doesn't seem to work.

Any ideas?

Jeff
03-11-2002 Over year old.
HOMEPAGE  
 
 
z11355
rrMaster
Location: 10000 is enough time wasted.

your not possibly turning power off to the machine are you?

It only keeps the flights max rpm while powered up.
03-11-2002 Over year old.
HOMEPAGE  
 
 
jbrundt
Veteran
Location: St. Charles, MO

I didn't turn the power off. I read in the directions that the way to clear the memory was to either power off the unit or hold the data +/- key for more tha 2 seconds. After I landed I would go to the max rpm screen but is said "0" or "0max".

What might I be doing wrong here?

Jeff
03-11-2002 Over year old.
HOMEPAGE  
 
 
jbrundt
Veteran
Location: St. Charles, MO

I used the function key to get to the max rpm screen. It always reads '0max'. I don't shut the unit off prior to doing this. I KNOW that turning off the power clears this register. I only used the data +/- keys thinking they might have something to do with seeing the max rpm only AFTER I chose the max rpm screen with the function key and saw '0max'. ( I am also fully aware that holding the data +/- keys for longer than 2 seconds also clears the max rpm register)

I have looked at the rpm screen while the motor is running and the canopy is off. I know it's recording rpm's because at idle I see it reading 500-560 rpm's. It's rather hard to view the control amp when the rotor is turning or even hovering for that matter.

My problem is the unit does not seem to be recording the max rpm's and then displaying it.

Once again I ask........what am I missing here?
03-11-2002 Over year old.
HOMEPAGE  
 
 
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