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HelicopterThunder TigerOther › TJ or GV-1 and how many channel rx
10-25-2004 05:21 AM  13 years agoPost 1
helibird

rrKey Veteran

St. George, UT

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Looking to buy a governor for my rap50v2 with os50. If they both do the same thing why such a price difference? What are the advantages and disadvantages to both? Please let me know what everyone's expierence has been with either. I'm just getting into aerobatics.

Thanx!!

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10-25-2004 06:54 AM  13 years agoPost 2
DOKEY

rrProfessor

Northamptonshire UK

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Maybe worth doing a search on this one, been gone over a few times.

GV-1 has LCD display gives all info and head RPM
TJ Pro has no display but (IMHO) holds head RPM much better.

Some say you need a tacho with the TJ, but I never used one for sometime with m TJ and used my ears to set the RPM.

Ryan.

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10-25-2004 11:23 AM  13 years agoPost 3
Drunk Monk

rrProfessor

Preston, UK

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Only people who have been flying a long time and have plenty of experience setting up headspeeds can manage it without a tach

I've tried it without a tach and was nowhere near. That's why the GV-1 is a good choice with the lcd screen, you set the headspeed on the screen for each flight mode and forget about it


Stephen

I only open my mouth to change feet.....

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10-25-2004 12:00 PM  13 years agoPost 4
Ben-T-Spindle

rrProfessor

Central Illinois

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I tried one of the early TJ’s and it gave so much trouble that I finally got a GV-1. The GV-1 is so much better and has lots of nice features. The best feature is that you can set the exact head speed for each flight mode without having to do any complicated calculations and carry around a chart.

The GV-1 is a lot more expensive but you get what you par for.

... BTS

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10-25-2004 12:50 PM  13 years agoPost 5
SPB

rrElite Veteran

Athens - Greece

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I'll second Ben-T-Spindle.

GV1 has many nice features like battery monitor, fail safe etc.

Setting the rpm in the LCD screen is just a piece of cake it also helps me to set my throttle curves very accurately w/out a tach. So if for example I want to set 1600rpm for normal mode I am setting them in the governor and I am flying my heli. Then when on air I am swithing the gov off if the rpm drop then I am increasing my thr. curve if raised then I dicrease till I have no change between gov on and off.


Sotiris
myhelis.com Flying Team

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10-25-2004 06:59 PM  13 years agoPost 6
helibird

rrKey Veteran

St. George, UT

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I don't have a tach so maybe it will be better to go with the GV-1. The next question is that I have a JR 8103 PCM and a R770 PCM rx. Do I need to upgrade my reciever to be able to run the GV-1?

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10-25-2004 07:30 PM  13 years agoPost 7
nojohnny101

rrElite Veteran

10 miles north of​Cincy, OHIO

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hey
so you guys are saying that in a nutshell: GV-1 is easier to setup up but TJ Pro holds better...but GV-1 costs more?

Let me know


Thanks
~Will~

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10-25-2004 07:48 PM  13 years agoPost 8
rpat

rrElite Veteran

Weirton, W. Va.

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Ok I just installed the TJ a couple of weeks ago, and I set it up with my tach and havent touched it after that, I am amazed at what a difference it made as far as smoothness in my calibre 30. I also have a gv-1 that I am going to put in my evo. It seems that every time that I pick up the instruction book( notice that I said book) futaba makes hard to interoplate as compared to the TJ with Two sheets of paper to set it up.
I know that you guys that have been flying a long time take it as second nature for the gv-1, but if you are just starting out it all sounds like greek.

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10-25-2004 08:31 PM  13 years agoPost 9
helibird

rrKey Veteran

St. George, UT

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How many channel rx do you need to run a governor?

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10-25-2004 09:08 PM  13 years agoPost 10
shuttlepilot

rrElite Veteran

Mullins, South​Carolina

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You can run a TJ manually without an extra channel. It just loops through the throttle servo to rx connection. You then set it manually to the speed desired. To be able to switch on and off, or to go between two different speeds you have to have 1 extra channel. I have mine on the 3 position switch on my Futaba 8UHPS. Up is off, mid is around 1740rpm and down is about 1900 rpm. I also use a tach, but I bought one that attaches to the tailboom. Cost 35.00. I get the exact speeds set and then don't have to worry with it any more unless I change something with linkage or throws on the throttle servo.

Gas is Great
Camper Fuel is Better!!
QWW Helis

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10-25-2004 10:15 PM  13 years agoPost 11
josefn

rrNovice

Sweden

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TJ Pro

http://www.modelavionics.com/

Every thing you need to know is there, how to setup your radio, and it has the EPA/ATV Calculator to to set the rpm...

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10-26-2004 01:07 AM  13 years agoPost 12
Elmote

rrApprentice

Los Angeles

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Shuttle
How did you accomplish that on your 8U? I have off in the middle, but like your way better.

Elmo Te

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10-26-2004 09:34 AM  13 years agoPost 13
cjw

rrVeteran

UK - Cheshire

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don't have a tach so maybe it will be better to go with the GV-1. The next question is that I have a JR 8103 PCM and a R770 PCM rx. Do I need to upgrade my reciever to be able to run the GV-1?
No need to upgrade. I'm running the 770 RX on my Raptor with a GV-1 and 401 gyro. All the channels are used but it works fine. I don't use the off switch for the GV-1 (as this would need another channel) but just use stick switch.

So GV-1 is on all the time above about 25% throttle with different head speeds dialed in for each flight mode. I've also set the Aux 3 knob to tune headspeed up or down if needed (on a JR10X radio).

Clive

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10-26-2004 11:36 AM  13 years agoPost 14
Ben-T-Spindle

rrProfessor

Central Illinois

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“How Many Channels?”

The channel assignment for a Futaba system with GV-1
1. Right/left cyclic
2. For/aft cyclic
3. Throttle
4. Rudder
5. Gyro mode/gain
6. Collective pitch
7. GV-1 RPM
8. GV-1 on/off

Futaba transmitters have built-in software to make it easy to use all the GV-1 features and easily set a different head speed for each flight mode.


.

... BTS

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10-27-2004 04:02 AM  13 years agoPost 15
Sern

rrApprentice

Penang, Malaysia

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Currently I am running both (TJ Pro and GV-1) and I like them. Below are my comments :
Setting :
1) TJ is much easier.
2) GV-1 have many function and you need to key in them one by one and need to know how they affect your heli.

Running :
1) TJ is much aggressive when searching the right RPM. Running ruff when engine not tune correctly. Have to use tech to check RPM.
2) GV-1 smother, you actually can hear the engine RPM increase smoothly.

Which one I like :
1) I will use TJ Pro on R50 and not on R60 or R90 because it is smaller and lighter. Easy to find a location to fit it on servo tray.
2) I will use GV-1 on bigger heli be cause I want to play around the function and see the changes.

Price :
1) TJ Pro is a lot cheaper.
2) 1 GV-1 can buy 2 TJ Pro in Malaysia.

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10-27-2004 05:55 AM  13 years agoPost 16
Skillmaster

rrVeteran

LA cali

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wats so hard about the tj pro u just get online in the calculator set up ur number(i think 3 numbers) click calculate and it tells u wat head speed ur gonna get? im looking at getting a tJ pro rite now and think it doesnt look so hard sens i have a 9303 govenor program, so is it really gonna be as hard as it seems? with the tj pro and the 9303

1992 3000gt vr4

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10-27-2004 12:12 PM  13 years agoPost 17
TerryG

rrApprentice

So. Daytona, FL

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Skillmaster:

The 9303 is ideally suited for the TJ. No mixes, no fuss. Dial it in and forget it. Note that the head speed calculator at the MA site is almost useless. You will need a head tach to set the RPM where you want it. The MA website now has instructions for use with the 9303 - very simple.


Terry

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10-27-2004 07:47 PM  13 years agoPost 18
Skillmaster

rrVeteran

LA cali

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yes it is simple but wat about using your ears to set up the head speed a friend always set up my raptors head speed with his ears and just messed with the engine and stuff to keep it down but with the govenor can i just use my ears? or is a tach manditory, and if it is were can i get one?

1992 3000gt vr4

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10-27-2004 08:11 PM  13 years agoPost 19
vols77

rrApprentice

Hills of Tennessee

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Terry G said
"Note that the head speed calculator at the MA site is almost useless".

I have to disagree with this statement.

I have the 9CHP and find the calculator to be very usefull - usually within a half of a point (0.5) .

I am checking headspeed with a MA tach.


On a offnote - can someone tell me how to use the qoute function?


Rick

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10-27-2004 09:46 PM  13 years agoPost 20
TerryG

rrApprentice

So. Daytona, FL

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Vols,

You can disagree if you want; makes no difference to me, but if you check this link:

http://runryder.com/helicopter/t62654p1

you'll see that quite a few people agree that there are problems with the MA headspeed calculator.

The thread is a little old; perhaps the problem with the caclulator has been corrected. Perhaps it only affects certain radio/servo configurations.


Skillmaster,

Some people apparently can set it up by ear; I'm not one of them. I use a tach.


Terry

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HelicopterThunder TigerOther › TJ or GV-1 and how many channel rx
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