SpartanRC DS760 Gyro Review and Setup Vids

[toaster12]

I thought it should be 0% gain or full left rudder.

Personally I use full left rudder, low gain never worked correctly for me. Which could start you in setup mode especially if the rudder was actually slightly right which would default the servo selection.

Did you actually save the settings to the gyro? I know I thought I had once but I hadn't, cause all settings were out! Now I always save config, save to gyro and reload from gyro just to make sure.

Even so, the default settings would have been generic to the 8900G so shouldn't have affected the servos travel!!

All solid state memories can be affected by static, another cause of gyro memory resets! (Especially with belt driven tails and the gyro mounted on the tail boom).

Just throwing ideas about, you could always open a support ticket with spartan. They are very quick to respond.

[AMAVERIC]

All good points but I hav followed to the letter the reqirments on the spartan support page under 2.4 Radio's

I quote from the support page

"Starting from firmware version v1.07 the gyro will not start calibration until the gain is raised above 15% (either AVCS or Rate mode). Spektrum users should bind their radios while the gain is set to a value around 10% preferably in AVCS. This becomes the default gain output when the receiver is powered on which will now prevent the gyro from starting calibration until the link with the transmitter is established. This method of setting low gain is preferred over binding with the rudder stick off center which will become obsolete in future firmware revisions."

And the queston of why the servo went hard over is one I'm asking. At the time things went wrong the Trex600e was sitting on my work table with the main motor battery disconnected...Just giving it the once over before first flight.

Yes I did exactly like you did save to a file and to the gyro. even did a power cycle reconnected data cable and did a read and confirmed all was as it should be..... just like I do with Castle Creations settings...

I guess I had a close one.....:wow2:

[helis101]

I had the same problem today mine went into setup mode. I have a dx7 have throttle cut programed into mix 2 for gear switch, when i powered up i had my gear switch down,throttle cut on it went into setup mode. Could some explain why this happned kinda scares me maybe i should go back to useing the trim for throttle cut.

[Scotty T]

So what's better? The Spartan or the Solid G by Youngblood?

[MarkWebber]

Jeff

What do you use for your gyro switch if using gear for Throttle Cut?

[toaster12]

I use the gear for throttle cut and have assigned the gear channel to aux 2 so i use the aux2 switch for gain.

If you had your gear switch down and it is still assigned to gain then maybe it's too low and went into setup!

[MarkWebber]

That's what I'm wondering. If the mix or channels are linked. I can't imagine any other connection.

[helis101]

Jeff

What do you use for your gyro switch if using gear for Throttle Cut?I use gear switch for gyro and the throttle cut, my gain is 45 in AVCS/Rate. Do you think haveing the cut assigned to same channel could cause it to go in to setup mode?

[toaster12]

You can assign the gear channel to the aux2 switch in the system menu for the model i.e. hold down the select and down buttons when switching on.

You can then disable the aux2 channel or if you use a governor assign it to the flightmode switch.

I use this on my DX7. Gear switch is throttle cut, aux2 is Gyro gain and flight mode switch controls my Governor.

[AMAVERIC]

Thats all very good but to get into servo selection dont you have to toggle the gain and hold over rudder stick. Not sure about this as I used the USB link to set it up.
Checked the TX and No MIX selected on anything.

Mark

[bflores]

USB and bluetooth Flash Link cables and Gyro in stock at readyheli.com (thanks to buzzkill for the tip).

Just purchased my Spartan USB Flash Link cable! Yeah! :)

[heliboy88]

Hi Bob or Angelos,

I'm planning to get another 500 size heli and am looking at this gyro, may i ask if it's compatible with the new hitec hs5084 servo? If yes, what us should i select, 760us i suppose?
Thanks a lot for any tip i can get.

More Power

[LJS]

Hi Bob, Angelos, or anyone!

Problem: After about 250 flights, my JR 770 3D gyro has started initializing in about 1 second which is too fast for my Spektrum AR7000 receiver.

My Solution: I have ordered a DS760 gyro because when I helped a friend set up his, there was something in the instructions that said I could set the rudder failsafe hard over so that the 760 doesn't initialize until after the AR7000.

My Questions: Did I remember this correctly? Will the DS760 solve my problem? Was there a better (less expensive) solution?

Thanks,:YeaBaby:
LJS

[beeflyer2]

My Solution: I have ordered a DS760 gyro because when I helped a friend set up his, there was something in the instructions that said I could set the rudder failsafe hard over so that the 760 doesn't initialize until after the AR7000.

My Questions: Did I remember this correctly? Will the DS760 solve my problem?

Yes, the Spartan should solve your problem. Bob covered this in detail in one of his videos.

[Finless]

The older code on the spartan you did that so in case the AR7000 took to long top initialize the gyro would wait to see a center rudder stick signal. The later code for the spartan, you bind the AR7000 with 0 gain. The gyro will wait until it sees a higher gain signal.

On my other helis with 6100's, 7000's etc. I have this problem with my 401, 6100T, etc. When this happens and the RX takes too long to init, I have to unplug and plug back in until the RX init faster. ROYAL pain.... Sometimes it never will and I have to cycle power on the TX. too.

I find that this problem of slow init on the RX seems to happen after a model change on the TX or if there are several DX radios on around me.

There is nothing you can fdo about it execpt keep cycling power until it inits faster.

BTW with the latest code on the RX's (1.7 as I recall) this is a LOT better.

Bob

[LJS]

Hi Bob and BeeFlyer2,

Thanks for the help. I'll be sure to get the latest code for the DS760 and I'll bind with 0 gain. That should take care of it on my Logo 500 3D.

It's interesting that you mentioned switching models. With the warmer weather, I was trying to alternate between my Logo 500 and my TRex 600E thereby letting one cool while I fly the other. Maybe switching models has contributed to the problem. I must have plugged and unplugged the power on the 500 with 770 3D gyro 20 times or more with no success.

But the 611 in my 600E has a nice long initialization delay. There's never a problem with that bird.

Bob, I used your videos for the first time when I built my Logo 500. It added a lot to my enjoyment.:thumbup: Thanks again for all the help!

Keep 'em flying.:YeaBaby:
LJS

[MarkWebber]

After reading all the issues associated with Spektrum, I'm sooooo glad I don't have one!
I don't get why they need to take so long to link. With FM or my XPS, never have run into such problems.

Finally, I got to try out a BlueLink. Too cool for words. Kudos to Angelos on moving the gyro world ahead.

[LJS]

Hi Bob,

Angelos answered my post on another forum and said it doesn't always matter if the gyro initializes before the receiver. That got me to thinking about my problem. When the gyro initialized before the receiver, my tail rotor would slowly move hard over. But I realized that was because after I bound the radio, I had to put in two clicks of right rudder trim to get the 770 3D to stop drifting left.

So I rebound the radio with the trim set to two clicks right. And that seems to have taken care of the problem. The gyro now just sits there ready to go even when the receiver intializes first. I haven't tried flying it yet, but I will tomorrow. I'm expecting everything to work just fine. If it doesn't, I'll let you know.

Thanks again for the discussion. The more we understand about how this technology works, the more we can get things to work the way we want.

Keep 'em flying.:YeaBaby:
LJS

[Finless]

The Spartan does not have the problem of initing before the RX. It's other gyros that do, so if Angelos answered you that he probably thought you were asking about the Spartan.

But maybe the rudder trick will work on the 770 as well... Worth a try.

Bob

[LJS]

Hi All,

Well, I tried out the 770 3D with it initializing before the receiver and it's no problem now that I've rebound the tx and rx with the same trim settings that I fly with.:thumbup:

The problem that I was experiencing was having added two clicks of right trim after I bound the Tx/Rx. That's why the TR was going hard over once the receiver initialized. Now that it's bound with the same trim setting that I fly with, the gyro is rock solid with no drift -- even when it initializes first.

Many thanks to Angelos for the tip that the gyro could initialize off the fail-safe signal.

Now what am I going to do with the DS760 that I ordered? Hmmm. A TRex 700 is sounding pretty good right now. Especially since I haven't been burning enough fuel this summer.

Keep 'em flying.:YeaBaby:
LJS

[brgsstm]

Wow the setup is just like setting up a CSM gyro. Cool, put me down for one thats for sure!

[Tomas Ahl]

I'm thinking about buying two of these suckers but am wondering about the cable to it. My helis have boom mounted servos and to me it seems that I will wind up with heaps of gyro cables up front in the heli but still may have problems reaching between the gyro and servo with how the gyro cable looks to be configured in the pictures I have found.

The helis I am thinking of putting this gyro in are a Hirobo Sceadu EVO and a Hirobo Freya EVO, both having boom mounted servos. I plan to use BLS251 servos on both. (Yeah I know I could move the servos forward under the canopy but I don't necessarily want to do that.)

How's the cable reach for boom mounted servos on "larger" helis?

[puma1824]

I have just completed the basic setup of a DS760 and have a question about Normal Mode and AVCS (HH mode). Before having a DS760 I used to setup gyros in AVCS (HH) mode in Normal, IDLE1, and IDLE2. I changed these settings due to the DS760 requiring me to flip back and forth between modes.

Should I proceed to use the following modes/settings for the DS760 gyro as well as my other heli with a different gyro?

Normal: Normal
IDLE1: AVCS (HH)
IDLE2: Normal

Pros and cons to this? Do I need to change my flying style? Meaning going right into IDLE1 after takeoff? When do I need IDLE2: Normal...or do I?

Please help a newb like me.

thanks in advance.

[MarkWebber]

I'm not sure I follow. Are you just using the flight mode switch to do the configuration? Is that the only switch that you have assigned for the gyro gain? Once you've got your setup done, you can keep it in HH if you wish. The gyro doesn't need to go into rate mode once the initial setup is complete.

[puma1824]

I'm not sure I follow. Are you just using the flight mode switch to do the configuration? Is that the only switch that you have assigned for the gyro gain? Once you've got your setup done, you can keep it in HH if you wish. The gyro doesn't need to go into rate mode once the initial setup is complete.

I guess what I meant was I used to fly in HH (AVCS) mode in any setting (normal, IDLE1, IDLE2) with other gyros. In the Finless video I saw he been switch from rate (normal) to HH (AVCS) mode via the switch typically assigned to N, IDLE1, IDLE2 (flight mode switch). I just thought maybe others maybe flying Normal in Rate Mode but in IDLE1 in HH mode. I could be wrong, that's why I ask. I could always just assign the Gyro gain to a separate switch???