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3D Heli Depot . JR-Spektrum . Gyro Hobbies

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Radio - Servo - Gyro - Gov - Batt > New Align gyro RCE-600 on their 600N? Got mine working -- short flight review.
 
 
wisebob
Senior Heliman
Location: US

I was wondering if anyone tried the new Align RCE-600 gyro on their nitro 600? If so, did you get it to work successfully?

I tried it today for the first time with a 8900G servo. After a few seconds of hover and some rudder stick movements, the heli did a sudden 360 on me. Luckily I hit the throttle hold and was able to get away with only a stripped front tail gear. The heli worked fine prior with a Futaba GY611/9256 on it.

Could it be a compatibility issue with the 8900G or some inteference with my 8717 servos on the front tray? The instructions don't say for electric use only and I know there was a factory video with Align testing it with the 700N.

Any feedback would be appreciated. Thanks.
07-04-2008 07:50 AM
 
 
wisebob
Senior Heliman
Location: US

I found out what my problem was. I had a bad 8900G which would stop moving intermittently. It makes sense since my JR 770 that I had on there with the 8900G was acting up previously.

Put a new 9254 on the tail. The gyro actually has great piroutte consistency during chaos' and travelling flight. No tail blowouts or tail wagging during fast backward upright/inverted flight, hurricanes, and tail slides.

The only problem with the gyro that I found (which might be specific to my unit) is that during startup, there is no drifting in hover but as you fly around, the drift gets worse and very noticeable at the end of the flight back to hover. Brings back unpleasant memories of the old JR 5000T (?) gyro but at a much cheaper price tag.

Other than the drift issue, the gyro works great but drifting is not acceptable to most people these days. I did trim the unit in normal mode first. Please chime in if you have any ideas/experiences to correct this.

Thanks.
07-05-2008 02:52 AM
 
 
TankDirt
Veteran
Location: illinois

I looked at some videos of its test flights and it seem very impressive especially for 85 bucks...what kind of class would you put this gyro in..611 type class or 401 type class?
07-05-2008 03:23 AM
 
 
wisebob
Senior Heliman
Location: US

If it wasn't for the drifting, it is better than a GY401 and on par with the best ones right now in terms of feel IMO. I had 30% expo. The gain is not as sensitive as the JR770 which is good and the unit is very small.

If your flight routine is hard 3D from beginning to the end and move the tail a lot, the drifting won't be that noticeable. It's only when you come back in hover that it becomes annoying.

Maybe Align is using a cheaper sensor and that is why the price is so low. Possibly I just have a bum unit or am missing something in setting it up -- the nose of the heli consistently drifted left; not right.
07-05-2008 03:33 AM
 
 
TankDirt
Veteran
Location: illinois

sounds like a mounting issue..try different mounting tape like zeal or 3m tape...I will be looking more into this unit..only 85 bucks thats pretty sweet!
07-05-2008 03:54 AM
 
 
702nitro
Key Veteran
Location: Las Vegas, NV

Does this gyro require setting it up in rate mode first to correct any rotational drift?

Vibe Fiddy
Atom 111110100
Trex 1001011000n
07-05-2008 07:29 AM
 
 
TJinGuy
Elite Veteran
Location: Socorro, NM - USA

I got mine setup recently on my Protos and I test flew it yesterday for the first time. I started by setting it up in rate mode like the ESky gyro and GY240 I have used before. I got it to hold just fine in rate mode and then switched it over to HH, adjusted the trim until it stopped wandering and then started adjusting the gain. I have got it to hold reasonably well but I am having some drift in a hover.

So last night I got the instructions out and set it up like it said. Center slider, center servo, set gain to 70% and gave it a try. Today I hovered another pack and the drift was much worse. I adjusted the gain and the trim but I could not stop it, especially sitting on the ground.

Then a friend asked if I had the delay set to zero. I said I didn't know because I was running the DS520 digital servo and I thought it did not apply. Turns out I had the delay set to about 50% or where ever it was when I got it. I will try it again tomorrow but if that doesn't clear up the problem, the GY240 is getting moved over.

- Chris

Variety+spice+life+supporting_paper_towel_industry=
King2+Rex450+Protos+Concept30
09-14-2008 05:04 AM
 
 
TJinGuy
Elite Veteran
Location: Socorro, NM - USA

Update: Well I got things working very well today. The biggest thing I learned was that like all other non-SS gyros, it is fairly temperature sensitive. I also found out that by switching from HH and rate mode and then back, it re-centers the servo and then holds great until the temp changes again. This morning I had to reset it twice. Otherwise it held amazingly well, better than anything I have used to date.

- Chris

Variety+spice+life+supporting_paper_towel_industry=
King2+Rex450+Protos+Concept30
09-16-2008 07:54 PM
 
 
tchavei
rrProfessor
Location: Portugal

Quote 
The biggest thing I learned was that like all other piezo gyros, it is fairly temperature sensitive.

I'm sorry, thats just plain wrong.

there are two types of sensors today. SS sensors which have embebbed temperature compensation (like the 601,611 and SolidG series) and that work very well. The biggest disadvantage is that the sensor is comparatively hughe so usually any gyro using this system is either very big or has to recur to a two component solution (amplifier and sensor). The other type are simple AD sensors. They are very small and much cheaper than a SS sensor. The advantage is that you can produce gyros with a very small footprint (ds760, csm720, logictech, align and many others). The big disadvantage is that they don't have embebbed temperature compensation. Without proper calibration and adequate coding, an AD sensor performs poorly in a real enviroment as minimum temperature fluctuations will produce increasing errors in positioning. Most companies invest a large part of they R&D and even a very big part of their production process to calibrate individually every single gyro (CSM and Spartan comes to mind). This will in fact make the AD sensor perform (and many times outperform) its bigger brother.

The problem arrises when a company wants to cut on production expenses and doesn't calibrate correctly (or even not at all) their final product... the result will be an invariable drift with any temperature change (even the one that occurs inside the gyro case). There is nothing the end user can do about (except throwing it away and buy something better).

Tony


--------------------
"Perfection and patience usually walk side by side..."
09-16-2008 08:53 PM
HOMEPAGE  
 
 
TJinGuy
Elite Veteran
Location: Socorro, NM - USA

Sorry but I don't see how I was wrong. Maybe I should have said non-SS piezo gyro?

Does it really matter? The fact is that the gyro is temperature sensitive and cycling between the HH and rate modes re-centers the servo and makes it functional again as the temp changes.

- Chris

Variety+spice+life+supporting_paper_towel_industry=
King2+Rex450+Protos+Concept30
09-16-2008 09:05 PM
 
 
tchavei
rrProfessor
Location: Portugal

It amazes me that you have to do that. Thats all. It doesn't matter if it is a AD sensor or not. Not even a 401 will drift under any circunstances (unless vibration is present). I mean, wake up. Nowaday gyros (at least the vast majority of them) don't drift. I see that your other experience is a 240 and honestly I've never run one of those but any gyro in the 401 class or better shouldn't drift ever. Most of them are slap on and fly.

Tony


--------------------
"Perfection and patience usually walk side by side..."
09-16-2008 10:38 PM
HOMEPAGE  
 
 
TJinGuy
Elite Veteran
Location: Socorro, NM - USA

Well some us prefer not to spend an extra $100-$200 on a gyro that is simply "slap on and fly". Besides how do we find out if a new gyro is worth owning until we try one?

In case your uber knowledge lacks this info, a GY240 contains the EXACT same sensor as a GY401 but lacks some of the features. As for the other 75% of the gyros out there, they all drift. Give the ever so popular Telebee a try. Or how about the Blade400 stocker. I know that most all the modern high-end gyros work great but some of us would rather spend that money somewhere else. So we are forced to live with these subpar and apparently faulty gyros

- Chris

Variety+spice+life+supporting_paper_towel_industry=
King2+Rex450+Protos+Concept30
09-17-2008 12:01 AM
 
 
tchavei
rrProfessor
Location: Portugal

Quote 
In case your uber knowledge lacks this info, a GY240 contains the EXACT same sensor as a GY401 but lacks some of the features.

Actually I did knew that, hence why I don't understand how you can rate better a gyro that needs to be "reset" every X minutes?

Quote 
As for the other 75% of the gyros out there, they all drift. Give the ever so popular Telebee a try. Or how about the Blade400 stocker.

Thx for this comment. I can now see that we live in parallel universes. There's no point in discussing this further.

Good luck

Tony


--------------------
"Perfection and patience usually walk side by side..."
09-17-2008 12:42 AM
HOMEPAGE  
 
 
TMoore
rrProfessor
Location: Cookeville, TN

If anyone cares to look, the SMM sensor on the 240, 401 and 601 are all the same sensor. The 611 is a new sensor from a different vendor and is the same sensor as the CSM720 if I'm not mistaken.

I'm not sure who Spartan uses but it is a good sensor as well. I also believe that the JR 500T uses an SMM sensor as well and subject to correction I think it is the same one as the 601.

TM

Buying tools is half of the equation, knowing how to use them is the other. - T Moore
09-17-2008 01:38 AM
HOMEPAGE  
 
 
TJinGuy
Elite Veteran
Location: Socorro, NM - USA

Let me just make this clear, I am no expert but just well read. I have used some truly crappy gyros and some better ones. All work on some level but some work no matter what. I believe this is what most look for but I feel it is not required for most flying, but required for other reasons.

To expand the list, the Logictech gyros, also rebranded as Hitec, are also solid state. TT makes a 7000 and JR makes a few including the G770 that are also SS.

All the others (and there are a lot) I have used, seen and read about are non-SS piezo gyros and come in a wide variety of shapes, sizes, costs and qualities. They all have issues ranging from just being pure crap to being more sensitive to vibs to having slight temp issues. I believe the RCE-600 is near the top of that list with nothing but some slight temp issues, and that I can handle for saving $75 on a GY401, $85 on a G770 and $155 on a Spartan. But that is just me.

- Chris

Variety+spice+life+supporting_paper_towel_industry=
King2+Rex450+Protos+Concept30
09-17-2008 05:52 AM
 
 
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Radio - Servo - Gyro - Gov - Batt > New Align gyro RCE-600 on their 600N? Got mine working -- short flight review.
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