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10-14-2005 08:39 PM  12 years agoPost 1
Helibras

rrApprentice

São Paulo, Brazil

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Anyone has tried this gyro? Is it a good one? Could be compared to the 601/611 in terms of holding power?

What is the specs of dedicated servo 8000sx ??

It so hard to find info about JR products marketed in the east!!


Gravity... the force to be defeated
Raptor 50SE; Hyper
Vigor CS; OS 91C-Spec MPII

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10-15-2005 08:43 AM  12 years agoPost 2
Saint728

rrProfessor

Honolulu, Hawaii

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They been out for some time now. I had one about 3 years ago, never got it to work right so I sold it and bought a 601. I don't think they make them anymore?

Take Care,
Cheers, Patrick

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10-15-2005 03:03 PM  12 years agoPost 3
Dr.J

rrVeteran

Ontario, Canada

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I'm not absolutely sure, but I think that the JR500T is currently considered the most practical gyro option from JR.

John

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10-15-2005 09:57 PM  12 years agoPost 4
Helibras

rrApprentice

São Paulo, Brazil

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They been out for some time now. I had one about 3 years ago

MacGregor is marketing them as a NEW gyro from JR... Aren't you mixing up with 5000T??

Comes with dedicated servo 8000sx which connects to it thought 4 wires. Looks a flagship to me....

Cyberheli is selling them for U$280.

Anyone can clarify this?


Gravity... the force to be defeated
Raptor 50SE; Hyper
Vigor CS; OS 91C-Spec MPII

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10-16-2005 12:57 AM  12 years agoPost 5
Saint728

rrProfessor

Honolulu, Hawaii

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The new one is called JR G7000T. The old JR G6000T was reviewed in MHW October 2002, page 56. I bought mine in November 2002, so it was definatly a JR G6000T. You can look at the types of gyros at MacGregor's website. Here is the link. http://www.macgregor.co.uk/radio/gyros.htm

Take Care,
Cheers, Patrick

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10-16-2005 02:24 AM  12 years agoPost 6
Helibras

rrApprentice

São Paulo, Brazil

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Patrick, had you find out why never worked right?

Do JR gyros compete with Futaba's in quality? What about CSM?

Ricardo


Gravity... the force to be defeated
Raptor 50SE; Hyper
Vigor CS; OS 91C-Spec MPII

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10-16-2005 09:59 AM  12 years agoPost 7
Saint728

rrProfessor

Honolulu, Hawaii

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I guess it would work right if I took the time to set it up. It was really sensitive in setting up and was difficalt to find the sweet spot. I sold it and bought a 601. It was so easy to set up, I just plugged it in and went flying. I'm not sure how JR gyros compare to Futaba or CSM? I'm sure they are all good, I just prefer Futaba.

Take Care,
Cheers, Patrick

Check the hotties in my Gallery
http://rc.runryder.com/helicopter/gallery/9019/?all=photo

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10-16-2005 10:14 AM  12 years agoPost 8
nivlek

rrProfessor

Norfolk England

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I am currently using a 490T (UK version of the 500T) , it's a cracking little gyro .

At the end of the day , it gets dark .

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10-16-2005 11:13 PM  12 years agoPost 9
Helibras

rrApprentice

São Paulo, Brazil

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As I told you before, for me is hard to get information about JR products that are market in Europe and eastern countries and is amazing how they seems better than what JR sells this part of the world. I would like to fit only JR avionics in my new Vigor CS.

So how would you compare your 490T with Futaba's line in terms of performance and reliability? Any tips for choosing servos and gyros for my new big bird. I can buy them all from Honk Kong and will cost me about the same if buying in US.

Thanks for any tips in JR products.

Ricardo


Gravity... the force to be defeated
Raptor 50SE; Hyper
Vigor CS; OS 91C-Spec MPII

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10-17-2005 10:35 AM  12 years agoPost 10
RotarSoft

rrVeteran

St Leonards On Sea UK

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Helibras,

As you are buying from Hong Kong you will get gyro and servo numbering which is the same as Japan and here in Europe (The US tend to run different numbers than the rest of us).

Here is what I recommend to you:

Gyro: G7000T (3D pilots think it's the equal or better than a 601, and it took top 3 places at the world champs.. Very easy to setup)

Tail Servo: 8700G

Cyclic servos: 8321(9kg, 0.21s), 8421(11kg, 0.19s) or 8511(15kg, 0.19s) if you're doing very hard 3D.

Throttle servo: 8231(6.5kg, 0.22s)

Cheers

Mark

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10-17-2005 05:08 PM  12 years agoPost 11
Helibras

rrApprentice

São Paulo, Brazil

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Great tips Mark.

But what about using 810G in throttle? Was planning to use CSM Revlock unit with it.

Thanks


Gravity... the force to be defeated
Raptor 50SE; Hyper
Vigor CS; OS 91C-Spec MPII

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10-17-2005 05:49 PM  12 years agoPost 12
RotarSoft

rrVeteran

St Leonards On Sea UK

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Helibras,

Yes you could use the 810G for the throttle. However the natural carburation will give a greater lag than the difference between the two servos.. my own personal preference would be for an 8231 as they have been shown to be pretty bullet proof.. however an 810G would work equally as well.

Cheers

Mark

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10-22-2005 05:45 AM  12 years agoPost 13
Helibras

rrApprentice

São Paulo, Brazil

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Me again Mark!!

Now I thought about a DS811 for throttle, fast and powerful enough - and cheap!!! How does it sound to you?

With so many digital servos I guess I will get some battery endurance problems...


Gravity... the force to be defeated
Raptor 50SE; Hyper
Vigor CS; OS 91C-Spec MPII

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10-22-2005 09:48 AM  12 years agoPost 14
RotarSoft

rrVeteran

St Leonards On Sea UK

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Helibras,

Yes the 811 will be fine on the throttle.

Regarding battery life.. this all depends. The JR Digital servos aren't actually too hard on the battery. In fact the Japanese F3C pilots at the world champs all ran 1400mah battery packs!

I run the JR 1900mah NiCad packs in all my models. This gives me atleast 50minutes flight time before I feel the need for a recharge. Obviously with hard 3D this will come down a little.. but you should still be getting 40 minutes which is enough for 4 flights.

I personally don't like the idea of Lipo's and regulators.. the contacts between the cells in the batterys are very delicate (not good with our vibrating 90's!) and the regulator is just another link in the chain that can go wrong. There's a lot of merit in the keep it simple theory ...

Cheers

Mark

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10-26-2005 08:31 PM  12 years agoPost 15
Helibras

rrApprentice

São Paulo, Brazil

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I was looking at Chinese shops and some of them sells DS8401 and DS8425. Both have specs close to the DS8311 (8421). Do you know what is the difference? Can I use these servos for CCPM on my Vigor?

Thank you man!!


.


Gravity... the force to be defeated
Raptor 50SE; Hyper
Vigor CS; OS 91C-Spec MPII

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10-27-2005 10:18 AM  12 years agoPost 16
RotarSoft

rrVeteran

St Leonards On Sea UK

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Helibras,

Not sure.. I don't think they are specific helicopter servos so I wouldn't go there. Stick with my suggestions as they are tried and tested.

Cheers

Mark

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