SpartanRC DS760 Gyro Review and Setup Vids

[psindrup]

I have looked over the video and read the manual, but I am still not quite sure how you find the servo's mechanical center (90 degrees) to start the whole adjustment process.

T.i.a.

Peter

[Angelos]

"With the ds760 set to Rate Mode and the rudder stick positioned at the centre the servo arm should be at a 90 degree angle with the pushrod as illustrated."

So basically...
1. zero your sub-trims before you start
2. gyro set to rate
3. leave the stick alone
4. fit the servo arm to the servo so it have 90deg angle with the pushrod.

-Angelos

[th3tick]

If you can't find an arm with a perfect zero, is it appropriate to use subtrim at that stage?

John

EDIT: was informed this was already asked and answered, so, nevermind ;) I'm all set!

[mporlier]

Anyone scared that nitro/water/snow can get into the gyro through the USB connector? What damage can it cause? I am thinking of doing a little ShoeGoo cap.

Marc

[Finless]

Well water, dirt etc is nver good for electronics so yea I would seal the port myself if it is being used in these kind of conditions. Certainly cant hurt! How about some celo tape?

Bob

[Sveberg]

Thank you for "loads" of priceless instruction videos Bob....:noteworthy

I have set up my Spartan gyro and my DX7 according to these videos, but experience a strange problem. The tail servo works fine toward both end points, but from one of the endpoints, the servo do not return to neutral position when i return the rudder stick to neutral position. In order to get the tail servo back to neutral position, I have to apply opposite rudder stick...!! Does anyone have any idea what I have done wrong in my set-up.

By the way - I have not been flying this heli yet, so this is how it works on the ground. Actually, I have never been flying a RC heli for real. Looking forward to my first flight, but would like to have everything work the correct way first....!

[psindrup]

That sound like a mechanical bind problem more that anything.

Are you 100 % sure that everything moves freely?

Peter

[Sveberg]

Yes, everything moves freely! There is no problem when the Gyro is allowed to work with the tail, but the servo just won't return to neutral when stick is returned to neutral (from the one side only). Strange thing....

[psindrup]

What if you bypass the gyro and connect the servo directly to the receiver?

Peter

[Sveberg]

Yep, I think I need to try that tonight!

[psindrup]

If you post your question in this Spartan thread, the designer of the Spartan ds760 gyro is "listening"

http://www.helifreak.com/showthread.php?t=47240

Peter

[AndreasM]

If you post your question in this Spartan thread, the designer of the Spartan ds760 gyro is "listening"

http://www.helifreak.com/showthread.php?t=47240

Peter

OffTopic, but isn't that this thread?

[th3tick]

Somebody probably moved them over here.

Do note that depending on which servo you're running, plugging it in directly to the Rx may not work. The Rx doesn't know how to talk to the ones with narrow pulse width, such as (from the Spartan manual) S9251, S9256, BLS251, LogicTech 2100G.

John

[BruceW]

When the gyro is in heading hold mode (gyro blue light is on) it will not return to center when you let go of the stick while operating on the bench. That is the way it is supposed to work. In rate mode (light off), it should return to center position.

[Sveberg]

When the gyro is in heading hold mode (gyro blue light is on) it will not return to center when you let go of the stick while operating on the bench. That is the way it is supposed to work. In rate mode (light off), it should return to center position.

Great Bruce - exactly what I wanted to hear - thank you :)

[Pinecone]

When the gyro is in heading hold mode (gyro blue light is on) it will not return to center when you let go of the stick while operating on the bench. That is the way it is supposed to work. In rate mode (light off), it should return to center position.

We need a smiley/auto insert for this and a couple of other things. :)

[Finless]

Yea... this gets asked 500 times a month... I think I have to do a Gyro 102 video or something.... Maybe redo and update my 2 year old 401 101 video ;)

Bob

[BruceW]

Yea... this gets asked 500 times a month... I think I have to do a Gyro 102 video or something.... Maybe redo and update my 2 year old 401 101 video ;)

Bob

Maybe also add a top 10 list for gyro FAQ. The only problem is how to make it easy to find.

[Finless]

Actually when the galleries come up expect major renovation of my forum here... Basically I will make a scripted gallery that lists topics and such and links to videos in an organized fashion. Also no more having 100 stickies here in my forum but stick things like this... FAQ's, etc.

Stay tuned I plan to clean house a little... Back when i started I had no clue how much stuff I would kick out and thus later have to organize.

Bob

[Angelos]

It is now one year since the ds760 was first mentioned on the web so I thought to give a brief account of the last 12 months that lead to the ds760's big success.

15 Jan: Fellow club member sneaks the news of the upcoming gyro on an Internet forum. Some people are supportive of the performance claims; others are doubtful.

4 Feb: First video of the ds760 in flight is released on our website.

28 Apr: One of the prototype gyros was flown at SEFF in USA. A few well known pilots also had the chance to fly it and it was very well received.

18 May: With the plastics just in a few days ago we managed to put two prototype gyros together to demo at Clubman 3D in the UK. Many pilots also got the chance to fly my heli at the funfly preceding the competition. The ds760 is fully functioning but some of the extras like firmware update functionality and USB support are still missing.

20 Jul: With just a couple days to spare a small batch of pre-production gyros is ready in time for 3D Masters. The bad weather prevented us from doing a demo flight but we managed to persuade some elite pilots to test it and give us feedback.

31 Jul: The first ds760 is sold to a very keen customer.

25 Aug: The promotional video for the Gohbee Phazor 600 is released on the web. The heli is fitted with a ds760.

29 Sep: The funfly preceding the 3D Championship in UK was again an opportunity for UKs best pilots to try the ds760 and for us to demostrate the Bluetooth connectivity and telemetry system we used to develop the gyro.

28 Oct: First photos and demo videos of the T-Rex 500 appear on the web. Guess what!... the prototype it is fitted with a ds760.

3 Nov: First sponsored pilot joins Spartan RC to fly the ds760.

28 Nov: Two more pilots join Spartan RC; we now have a team to be proud of :D Surely they deserve a page on our website!

Dec-Jan: More of the world's best pilots join our team. The ds760 is now probably the most desirable gyro on the market with many people eagerly awaiting the arrival of the next batch.

-Angelos

[mporlier]

I have a question regarding the gyro setup and the X9303. In my hold Futaba TX my gain value ranged from -100 to +100 but in the X9303 it looks like it is from 0 to 100. I use to have a setting of +25 for HH in Futaba, does that equate to 62.5 on the X9303?

Is 50 = to 0 in Futaba? As well this looks like half the resolution to me, 100 steps vs 200. So What am I doing wrong?

Thank you

[Pinecone]

Great, but when are they going to be available? :)

[Angelos]

mporlier, sorry it is impossible to advice on that one as every radio is different. There are differences even between radios of the same brand also and depends whether you are using the dedicated gyro options or adjust the gain with the ATVs as I like to do. In future release of the firmware and computer software we will add a field to display what gain the gyro sees.

Pinecone, we hope to ship to the shops in less than two weeks time. Add a few days for delivery.

-Angelos

[mporlier]

mporlier, sorry it is impossible to advice on that one as every radio is different. There are differences even between radios of the same brand also and depends whether you are using the dedicated gyro options or adjust the gain with the ATVs as I like to do. In future release of the firmware and computer software we will add a field to display what gain the gyro sees.

-Angelos

I use to have a Futaba 7CHP now I have a X9303 with the gyro menu activated on AUX 2. No ATV, I can assign values to different flight modes.

[Finless]

mporlier, for X9303 are you using the gyro menu? If so you must have the gain line in AUX 2. The gyro menu will not work in GEAR channel with the gyro menu. Why JR did this is beyond me because users of 6 channel RX's cant use the gyro menu!

OK so if you using the gyro menu then 50 and above is HH mode and below 50 is rate mode. Also the STEPS are different. TRUE gain is calculated as (x-50) X 1.44. So if you have 74 in your gyro menu then (74-50) x 1.44 = 34 Gain.

If using travel adjust on gear channel then it's +100 to -100 and the number pretty much matches gain so if you wanted 34% gain set the left end point to 34.

Hope this helps,
Bob