500T....wow

[Ivan]

I just got a used one and in comparison to my 401, it is a fair amount better at holding the tail in flips, and rolls. It also has a rock solid piro rate in a breeze where my 401 would whip. I am looking forward to trying some tail slides to see how it works for that.

It also seems to have cured the asymmetrical stopping that the 401 had.

I am impressed.

Ivan

[SteveL]

What do you have it on and how is it set up?
I have mine on a 9z and an EVO 50. I have the gain @ 24% and still have tail wag.

[Ivan]

I have it on an Evo 50, with a 10X.

You might try shortening your servo arm one hole, it might help.

Also look at the topic that has the setup by john garst, i followed that and it worked quite well. I have the gain around 45%, and the travel at about 60% on the dual rates, and about 60% expo.

I switched into the 100% dual rates and it was absolutely crazy, I can believe that it would blow a crown gear on a vigor..sheesh it was fast.

If you don't get it fixed, let me know and we will hammer it out.

Ivan

[SteveL]

I have mine on the 2nd to farthest hole out on the 2 sided arm that came with it. I will look at the post.
Thanks

[Ivan]

Man, I just can't believe this gyro.

Before todays incident, I was doing traveling piros and the piros were rock solid, no tendancy to whip.

It held great during a rolling tail slide, which my old 401 would never do. No bounce back like the 401. Wow, amazing.

[SteveL]

I thinkk I am going to have to send mine in for service. I talked to Scott Gray at lengh on the phone the other night and he gave me some things to try and none of it helped. THe tail has a twitch (like the gain is too high) and a drift in the opposite direction. I dropped the gain all the way down to 10% and moved in a hole on the arm and still no joy. I took a 601 that was flying fine off this heli to put on another heli. I have borrowed a 401 to try and if flyies ok there must be something wrong with the gyro or servo.
BTW if you think the 500T feels good try the 611.

[rcsoar4fun]

I have a 500T on my Raven and I love the thing. I have flown a couple of 401s, but to me always felt "disconnected" from the tail. The 500T is certainly less plug and play than the 401, but once it is setup, it rocks.

Kristopher

[Ivan]

BTW if you think the 500T feels good try the 611.

Umm, there is that small issue of the near $200 in price difference. :mrgreen:

I am reasonably sure that Scott has a handle on how gyros work, so if he couldn't help, it may be time to send it in. :idea:

Good luck.

Ivan

[marked23]

I've recently had the opposite experience. I used a G500T with huge success in my Hawk. It was very reliable and had a good feel.

So I bought a second one and put it in my Fury Extreme. Not the same at all. It seemed sloppy and when I turned up the gain enough for a solid hold in hover, it would wag violently when doing a turn in FFF.

I took it off the Fury and put it on my T-Rex. I tried an HS-50 HS-56 and airtronics 94761. I set this second G500T up all sorts of ways and it never felt good. Any hint of backwards flight would blow-out.

So I bought a gy401 and a 9650 servo. ...and put that in the t-rex. It was an immediate improvement.

I'm thinking that various gyros have their application where they perform thier best... and other applications where they don't.

I sold that first G500T that worked so well. I wish I could have it back to do some comparison testing against the second one I still have. It was that different.

I like JR. I fly a 9303. If my second G500T experience were as good as my first, I would still be using that gyro. But the Futaba 601/611 is hard to beat.

The 611 is only $40 more than the G500T. I'm serious. Most folks forget that the 611 comes with the servo. The G500T works best with the $129 8700G servo. [I admit that it works well with lesser servos too.] That combo comes to $279. The street price of the 611 is $320.

Anyway, I remember that the G500T did seem to be more consistent on the piro rate during piro flips. I miss that about it.

-Mark

[T-wreck450]

I have the 500T on my trex450 and I get that violent wag shortly aftert take off. I am usin JR DS 3400G tail servo. Do you know how to fix it? It was every now and then at first but now after take off. Just hovering, no FF yet.

[Ivan]

On heading hold gyros, turn the gain up until the tail holds well. Turning it up until it wags and backing it down a bit will end up working the snot out of your servo. It sounds to me like your gain is a tad high.

It could also be that you are in heading hold mode as you carry the heli out to the flight spot and any direction change will cause the gyro to try and seek the last set point. I start flying the tail way before lift off, by looking at the tail blades as the heli spins up, to monitor the position. You will kinda get an idea of where they need to be after while.

[T-wreck450]

Pardon my noobness, but please walk me thru this. What is heading hold vs. the other name (forgot it). On the 500T gyro I have both swithes on high. What does the dial behind the switches do? I don't plug the battery in until I set the heli down from my take off spot. Today after plugging battery in, I noticed tail blades would pitch and slowly reset. It did this for about 20-30sec. Thank you for your help as I don't fully understand the mechanics yet.