Originally Posted by jombo

I downloaded it too but it said i already installed it . So I guess I had the new software all along

when and where you bought zyx from?

Originally Posted by Dr.M

Hi guys,

I've recently upgraded one of my CX-ZYX frankengyros to firmware 4.0 and took it for a short test flight in the driveway. Overall impression is that the differences in flight behavior are subtle:

- piro compensation seems to be a bit better. I was able to get about 4 full piros before needing any correction input on cyclic. For some reason my 450 seems to piro much more level CW (5-6 full revs before correction) than CCW (4 full revs before correction).
- without changing anything since v3.5, I'm getting a faint (high-gain) wobble on cyclic roll after the upgrade.
- cyclic feel seems a bit crisper and more connected.
- collective feel unchanged (still vague).

I'm planning a trip to the field later today to do some more testing, including the looking into whether they solved the pitch-up tendency in FFF. Stay tuned for more...

Thanks for this. Yes, I've noticed the piro comp fade after 5 odd full speed piros, as well. I wonder if there is a good reason for this. In slow piro hovers it just seemed to go on forever, with only slight correction needed, which it wouldn't do before.

What collective pitch are you running? Have you tried increasing it to 12.5 or 13 degrees.

Originally Posted by beenflying

That's a real pity. Did you advise Tarot that your special firmware also fixed my servo kick and lockout problem with the Align DS410M. If they know there are more issues of this, then they might add it to the official release.

I thought todays was the official release

Well it's on the tarot web site and I have downloaded and updated two units

Originally Posted by sp00fman

Omg omg omg, so excited about the new firmware I really like to see if piros are truly improved. Even adding a gov function, NICE..... Tarot is putting out some superb work.

I might just test it on my night heli this evening....

Yes, a big thanks to Tarot for continuing to improve this gyro. Definitely one of the top Chinese companies, in my opinion.

Originally Posted by wlee1017

when and where you bought zyx from?

I loaded it last week from the Tarot site when i got the units . I went on a program locator mode and downloaded all that i could find for this unit . I didn't know it was a new version .
This is what i was talking about I think when i couldn't find a program that would open it . It took a while to finally find it on windows drivers out there . No idea how i did it either

Originally Posted by beenflying

Yes, a big thanks to Tarot for continuing to improve this gyro. Definitely one of the top Chinese companies, in my opinion.

Yep - agreed, and not just with this, but their "clones" actully have some improvements that seem to be filtering back into Align models as well

Originally Posted by beenflying

Yes, a big thanks to Tarot for continuing to improve this gyro. Definitely one of the top Chinese companies, in my opinion.

No kidding, I'm definitly in danger of becoming a 'fanboy'

Not to worry tho, I'm always looking for whats how, now and wow

Originally Posted by War Horse

I thought todays was the official release

FyreSG was given a special version, a few days ago, to fix his servo kick at power up issue. With permission from Tarot he gave me the same version to try, to see if it fixed my servo issue, and it did. Now it would appear that they have released the version without the servo fix.

Just back from the field with my night rig HK450.2 packs, smacked it around pretty hard in light rain and wind-gusts. No odd behaviour. piros are maybe a little better, but hard to say with the worn swashplate. it does drift less doing 90degree turns in hover, but i still need to tilt the disk to keep it in one spot.
Somehow collective felt more connected around center. could be the wind giving me some translational lift, I'm not sure.

All in all i would say it is safe to upgrade. I had no additional settings to adjust.

Originally Posted by beenflying

FyreSG was given a special version, a few days ago, to fix his servo kick at power up issue. With permission from Tarot he gave me the same version to try, to see if it fixed my servo issue, and it did. Now it would appear that they have released the version without the servo fix.

The ZYX4 release has a modified date of 28th Feb so the FyreSG version could be later ...

Originally Posted by MikeHRC

The ZYX4 release has a modified date of 28th Feb so the FyreSG version could be later ...

Call me paraniod, but Tarot must be following along pretty tight on this thread by now and using us as guinea pigs for what happens next, this is a good thing, however if the hits the fan, we're stuck with the damage.

Or maybe I'm just over thinking all of this early leak of information.

No, Tarot did FyreSG a big favor by giving him a version that would fix his servo issue. They said he was the first they knew of with that issue. I'm sure it will end up in a later release. It does not cause any risk in flight.

I hope Tarot is following this thread. That's what the better companies do to perfect their products.

Originally Posted by beenflying

No, Tarot did FyreSG a big favor by giving him a version that would fix his servo issue. They said he was the first they knew of with that issue. I'm sure it will end up in a later release. It does not cause any risk in flight.

I hope Tarot is following this thread. That's what the better companies do to perfect their products.

I agree, its not like they're charging for the updates, and it is kind of fun to get in on the ground floor.

I guess I've become a 'sit on the bench and wait to see what happens' kind of guy.... I blame it on old age

I went to the field and flew 3 packs on the newly updated CX-ZYX v4 on my CopterX 450 Black Angel.

Good news:
- for me, the cyclic feel is significantly improved. It is more responsive, more connected (less robotic). The gyro no longer feels like it resists inputs around center - I managed to fly some of the best piroflips I've ever done on the 450 to date. It feels like they added a feed forward gain (perhaps that's what the new advanced parameter is).
- slow piros are definitely more stable than 3.5. However, as beenflying was writing, piro comp seems to fade on fast piros after 4-5 full revs and significant cyclic inputs are required to regain a flat attitude.

Bad news:
- the pitch-up in FFF is still present. It's is a lot less abrupt and violent than 3.5, but still does it.
- Multiple barrel rolls in FFF still result in a pronounced nose-up tendency
- Looks like they made some changes to the gain algorithms, because I kept getting minor head wobble when the disk was unloaded, and subtle tail wag in FFF. Slight gain reductions may be required.

All in all, I really dig the new and improved cyclic feel. Next up, I'm going to upgrade the ZYX on my Protos, and that will be a real test of what v4 can do.

Originally Posted by beenflying

Thanks for this. Yes, I've noticed the piro comp fade after 5 odd full speed piros, as well. I wonder if there is a good reason for this. In slow piro hovers it just seemed to go on forever, with only slight correction needed, which it wouldn't do before.

What collective pitch are you running? Have you tried increasing it to 12.5 or 13 degrees.

Collective is right about 11.5°. I tried going higher, and the improvements were minimal. However, I like less pitch because it allows me to be more precise in 3D moves.