RunRyder RC
 6  Topic Subscribe
WATCH
 2 pages [ <<    <    ( 1 )     2     NEXT    >> ] 1900 views POST REPLY
Scorpion Power Scorpion Power
HelicopterRadio - Servo - Gyro - Gov - Batt › JR G7703D vs JR G7000T
11-28-2007 11:10 PM  9 years agoPost 1
xxcysxx

rrKey Veteran

Baltimore, MD - USA

My Posts: All  Forum  Topic

so does anyone have experience with both of these gyro. how do they compare. i've heard of many good things about the g7703d. i don't see many peoples talk about the g7000t, but i don't hear anything bad about it either. would they both perform about the same. the price is about $100 difference.

any input is appreciated.

Tam

PM  EMAIL  Attn:RR  Quote
11-29-2007 12:06 AM  9 years agoPost 2
Zaneman007

rrElite Veteran

Texas - USA

My Posts: All  Forum  Topic

It is the same gyro. So go for the cheaper one. One is branded for Europe and the other North America.

Old Guys Rule!

PM  EMAIL  GALLERY  Attn:RR  Quote
11-29-2007 12:08 AM  9 years agoPost 3
jab1969

rrVeteran

Fort Worth 76137, Texas , USA

My Posts: All  Forum  Topic

These are not the same gyro's!!!!

Xtreme Power Systems, @Signs

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
11-29-2007 12:14 AM  9 years agoPost 4
jab1969

rrVeteran

Fort Worth 76137, Texas , USA

My Posts: All  Forum  Topic

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
11-29-2007 12:52 AM  9 years agoPost 5
Zaneman007

rrElite Veteran

Texas - USA

My Posts: All  Forum  Topic

I am bad. I didn't look at the topic. I thought that he was talking about the G7703d and G770t.

In my experiance all JR gyros drift. I'm told that the 770 does not drift. It is suppose to be a solid gyro and JR's best to date. The JRG7000T is well..... It is a typical JR gyro. I call them drift puppies.

The 770 is suppose be JR's best gyro. Or at least they were suppose to eliminat the drift. Find a copy of RCheli mags Jan 08 issue. They tested the 770. Apparently the first one drifted? They said it was a QC issue?

IMO JR makes a good radio, some high end servos and some low end servos. And they attempt to make gyros, but..... Futaba eats em up and spits em out in this area. I'm going to get blasted here. You'll see the reps coming out of the woodwork and monitor screens.

Old Guys Rule!

PM  EMAIL  GALLERY  Attn:RR  Quote
11-29-2007 12:52 AM  9 years agoPost 6
fiveoboy01

rrVeteran

Waunakee, WI - USA

My Posts: All  Forum  Topic

The G7703D seems to get mixed reviews, it's working great for some and not so great for others. I haven't had much chance to test mine due to the weather. Hopefully i can get it to work or it's getting tossed for a 611.

PM  EMAIL  Attn:RR  Quote
11-29-2007 12:56 AM  9 years agoPost 7
Zaneman007

rrElite Veteran

Texas - USA

My Posts: All  Forum  Topic

Fiveoboy thanks for retracting you post. If say something wrong or incorrect feel free to call me on. Just, keep the boxing gloves at home.

It is easy to belittle someone. It is hard to stand up for yourself and harder to stand up for someone else.

For those that are perfect.(lol)

Old Guys Rule!

PM  EMAIL  GALLERY  Attn:RR  Quote
11-29-2007 01:01 AM  9 years agoPost 8
jab1969

rrVeteran

Fort Worth 76137, Texas , USA

My Posts: All  Forum  Topic

Ive heard the same mixed reviews, the 770 has the footprint like a 401 so there is definatly a weight savings there, I heard that it has a very consistant piro rate and holds very well. Gotta be the smallest high end gyro out there at this time??? I could be wrong but I dont think so.............Im sure someone will chime in on this soon. I have flown the 7000 set up was a Bi$%@ but when set up properly flelt very good. What size of machine are you putting the gyro on? I love the Logitech 6100 with super fast servo, Has to be the easiest gyro Ive ever set up!!!!! Love it

Xtreme Power Systems, @Signs

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
11-29-2007 01:02 AM  9 years agoPost 9
fiveoboy01

rrVeteran

Waunakee, WI - USA

My Posts: All  Forum  Topic

My aplogies, I edited it out.

I'm feeling confrontational tonight

My guess is that that Spartan gyro is the smallest high-end gyro available right now.

PM  EMAIL  Attn:RR  Quote
11-29-2007 01:52 AM  9 years agoPost 10
Flyboy Shady

rrNovice

Stockholm

My Posts: All  Forum  Topic

PM  EMAIL  Attn:RR  Quote
11-29-2007 02:12 AM  9 years agoPost 11
Tioli

rrVeteran

Kona, Hawaii

My Posts: All  Forum  Topic

I'm not pleased with the G7000T on my Logo. I can't seem to get a good lock. It either drifts or it wags. It also has two leads for gain instead of the usual one.

PM  EMAIL  GALLERY  Attn:RR  Quote
11-29-2007 02:44 AM  9 years agoPost 12
xxcysxx

rrKey Veteran

Baltimore, MD - USA

My Posts: All  Forum  Topic

is this mix reviews that got me so confused about the g7703d.

i'll be using the gyro on the raptor 90se by the way.

Tam

PM  EMAIL  Attn:RR  Quote
11-29-2007 04:04 AM  9 years agoPost 13
SteveH

rrProfessor

Texas

My Posts: All  Forum  Topic

In my experiance all JR gyros drift. I'm told that the 770 does not drift. It is suppose to be a solid gyro and JR's best to date. The JRG7000T is well..... It is a typical JR gyro. I call them drift puppies.
Zaneman007,
I fly nothing but JR gyros and they do not drift....when they are set up correctly. I suggest you read the instructions the next time you install a JR gyro, and you will not have drift problems. They do setup differently than a Futaba.

Oh, and no, I am not a JR rep.

The government cannot give you anything without first taking it from someone else.

PM  EMAIL  GALLERY  Attn:RR  Quote
11-29-2007 04:52 AM  9 years agoPost 14
Zaneman007

rrElite Veteran

Texas - USA

My Posts: All  Forum  Topic

I have 2 JR gyros and 3 futaba gyros. One of the JR gyros is on a Futaba radio and the other one is on a JR radio, both need subtrim. NONE of the Futaba gyros need subtrim, and they don't drift. The 9303 is my primary radio.

I'll work on my reading skills, but they are still drift puppies. At least mine are. I am glad that you are having better luck with them then I.

I am just giving my review as requested.

Old Guys Rule!

PM  EMAIL  GALLERY  Attn:RR  Quote
11-29-2007 05:25 AM  9 years agoPost 15
Flyboy Shady

rrNovice

Stockholm

My Posts: All  Forum  Topic

7000/8700 is first class. It is important to set it up right though. The HH channel (not the sensitivity gain channel!) must be set to 150%. If at 100% it will not perform att maximum.

7000/8700 outperforms 770/8900 easily and should be equal to 611/9256.

PM  EMAIL  Attn:RR  Quote
11-29-2007 10:46 AM  9 years agoPost 16
Autoeject

rrKey Veteran

Ashtabula, OH, USA

My Posts: All  Forum  Topic

My guess is that that Spartan gyro is the smallest high-end gyro available right now
You've got that right. Same footprint and 1/2 the height.

Mark Webber
wai-rc.com
Spartan RC Distributor
Outrage Helicopters

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
11-29-2007 12:36 PM  9 years agoPost 17
SteveH

rrProfessor

Texas

My Posts: All  Forum  Topic

There is one significant difference between Futaba and JR gyros, and until you read the instructions, and do what they say, you will never have good luck with JR gyros.

A Futaba gyro "learns" the channel center when it is turned on. That is why you must turn the TX on first, don't move the sticks, and then turn the RX/gyro on, and let it go thru it's setup routine. It has no internal standard and uses the center pulse from the TX as it's standard.

A JR gyro has it's own internal standard, and no special turn on sequence is needed. However, if the gyro's internal standard is anything different from the center pulse of the transmitter, it WILL drift....nothing wrong with it, it's just the way it works. In the instructions, JR instructs to turn on the TX and the gyro, set the mode channel on the TX to put the gyro in HH mode, and observe the gyro servo. If there is any drift of the servo, use the sub trim of the TX tail rotor channel to stop the drift. What you are doing when you do this is setting the TX internal standard for that channel, to match the internal standard of the gyro. Then, of course, setup the mechanical linkage of the tail rotor for hands off flight in non heading hold mode, and do not adjust the sub trim again.

After doing this setup procedure correctly, the JR gyros will not drift. I don't have any of the new JR770 gyros yet, but have one 7000, and three 500T's, and find they out perform, or at minimum, equal the performance of the Futaba gyros.

The government cannot give you anything without first taking it from someone else.

PM  EMAIL  GALLERY  Attn:RR  Quote
11-29-2007 01:39 PM  9 years agoPost 18
DS 8717

rrProfessor

Here wishing i was somewhere else

My Posts: All  Forum  Topic

I just put a 770 on my 600 nitro. I set it up with no trims or sub trims. I had a slight drift to the right so i adjusted the push rod one turn to give it left input and now it's perfect. The gain is 63% and i'm using 85% on rudder ATV. I have 35% expo.I found the stock 95mm carbon tail blades to be too long and switched to some shorter and narrower Rotortech blades. Something you might not think about is the transmitter stick might not always going back to center which will give a different neutral input. I havn't had any drift problems with my 500T,5000T,and 770 3D,but then i have a really good transmitter also. I suspect theres probably a problem with the cheaper transmitters like the 9C which have horrible pots on the sticks.I think also theres too much blame put on the gyro when it's probably the heli set up also.DOUG

YOU ONLY LIVE ONCE..IF YOU LIVE IT RIGHT THATS ALL YOU NEED

PM  EMAIL  GALLERY  Attn:RR  Quote
11-29-2007 01:51 PM  9 years agoPost 19
Eury

rrProfessor

Dover NH

My Posts: All  Forum  Topic

I definitely think the bashing you hear about JR gyros is poor setup. I've only read the threads on here and never had any personal experience with the JRs until I bought my Freya which came with a 500T and an 8700G. I immediately called my LHS to have them order me another gyro without flying it, but then got a chance to get out that day and fly the thing. After setting it up according to the instructions, it holds as well or better than any 401 I've flown, and doesn't drift one bit. It even holds fine in a tailslide from WAAAY up there and in backwards flight. So I cancelled the replacement, the JR gyros work fine, and as an added bonus, I've never seen a Piro rate as fast as this thing.

And that's with a gyro from 2003. My next one will probably be a 770, people are too used to Futaba gyros where you can just throw them on a heli and no matter how bad your setup is they hold. The JRs require some setup, but it probably takes all of 5 minutes more than a Futaba, so it's certainly not a huge downfall.

Nick Crego

Citizen #0168

PM  EMAIL  GALLERY  Attn:RR  Quote
11-29-2007 05:07 PM  9 years agoPost 20
xxcysxx

rrKey Veteran

Baltimore, MD - USA

My Posts: All  Forum  Topic

Thanks guys for the input. I think i'll just go ahead and take first class on the g7000t gyro.
The g7703d has too many mixed reviews, to worth my time.

Have a nice day everyone.

Tam

PM  EMAIL  Attn:RR  Quote
WATCH
 2 pages [ <<    <    ( 1 )     2     NEXT    >> ] 1900 views POST REPLY
Scorpion Power Scorpion Power
HelicopterRadio - Servo - Gyro - Gov - Batt › JR G7703D vs JR G7000T
 Print TOPIC  Make Suggestion 

 6  Topic Subscribe

Tuesday, October 24 - 5:09 am - Copyright © 2000-2017 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online