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Radio - Servo - Gyro - Gov - Batt > CY SOLID G & T REX 600
 
 
plantone
Senior Heliman
Location: Rotorua New Zealand

Hi

I have flown the trex 600 n today for the first time with the solid G gyro. It is set up to the book ie 38 % gain this just kept letting go on me in flight & felt very wishy washy & have ramped the gain up & now at 56% should i use a longer servo arm & bring this gain back down??? also i cant get the G view into display mode it only goes as far as the heli type & wont show pirouette menu, response menu, pir balance,gain balance,rate gain etc,etc. any ideas

Cheers wayne

PS servo arm lenght currently 11mm this worked great with csm720 also servo is futaba 9256.

vibe 90
cs vigor
600N pro
600N super pro
hirobo chinook
Trex 700N
06-29-2008 06:28 AM
 
 
RappyTappy
Elite Veteran
Location: Las Vegas, NV

I was at 14mm and 39ish% with a 9256 on the Vibe 50, tail was rock solid even with plastic tail blades. Thing I noticed is the Solid G is very sensitive around center, so you will want to add expo on the rudder and it seemed to give it a much better more locked in feeling as the 'wishy washy' feeling your getting was what I felt(like it wasn't locking) until I added expo. I never have had to go into the advanced menu to get the gyro to hold great.

Chris
Xero G

Forever Brothers
Mickey Tylo
06-29-2008 07:59 AM
HOMEPAGE  
 
 
plantone
Senior Heliman
Location: Rotorua New Zealand

Thanks i will try a longer arm next time im out. I was only doing consecutive rolls on the spot when the tail was stepping out on me. Then i wound the gain up on from the TX & it became more locked it. It did feel very smooth but will try to get the gain down closser to 38% ??

Thanks

vibe 90
cs vigor
600N pro
600N super pro
hirobo chinook
Trex 700N
06-29-2008 10:00 AM
 
 
baddraptor
Elite Veteran
Location: valencia, ca- usa

Quote 
It did feel very smooth but will try to get the gain down closser to 38% ??

Dont worry about the gain number. If its locked in at 56 thats fine. I am at 70 gain on mine and have gone higher with no tell tale signs of hunting or wagging. CY sadi it likes a higher gain and he is right..

Quote 
also i cant get the G view into display mode it only goes as far as the heli type & wont show pirouette menu, response menu, pir balance,gain balance,rate gain etc,etc. any ideas

Go to CY website and it will tell you exactly how to do this. Just know that sometimes you need to hold the button a little longer than what is stated. If you have the New Solid-G and it has trex600NITRO in it there really is no need to adjust anything in the piro or response menu. The settings are darn near perfect.

**Unattended children will be givin a shot of espresso and a puppy**
06-29-2008 03:28 PM
 
 
RappyTappy
Elite Veteran
Location: Las Vegas, NV

Yea, I experienced the same thing, it feels like its the gyro losing tail holding, but it actually your fingers inputing a slight amount of tail and the Solid G is very sensitive with no expo right off center. Added rudder expo and all good.

Chris
Xero G

Forever Brothers
Mickey Tylo
06-29-2008 05:09 PM
HOMEPAGE  
 
 
Buzzin Brian
Elite Veteran
Location: College Station, Texas

There are several things to consider, all of which have been brought up. Like has been said the T-Rex 600N likes a way higher gain than the 38% gain (which is meant to be a starting point by the way) as you have discovered. Mine is running at 58% and it is SUPER sweet! The setting for the 600N for me were pretty right on target. The second thing is what Chris has pointed out. The fact that the Solid-G is very sensitive around center when flown without expo. I can say that the Solid-G is the ONLY gyro I have ever used expo on in my life, but with a little expo I was able to get the gyro just the way I wanted it. Not the way someone else decided it should be. So that turned out to be a good thing! The third thing is the travel adjust on the rudder channel. If it is at 100% and 100% (which it should be after set up is complete) the piro rate will likely be a little fast. You can use the rudder dual rates if desired to taylor the piro rate to a desired speed, or you can reduce the travel adjust to taylor the speed. But be aware if you ever need to re-set the end points on the gyro the travel adjust and or rudder dual rates will have to be BACK at the 100% and 100% travels or linear on the dual rates. My point is there are a small hand full of adjustments that can be made to taylor the feel of the gyro, but I beleive your issue is low gain. I would run the gain up into the mid 50's when viewed with the G-View and then put in a little expo. Start at about 30% and go from there. With a few adjustments you should be able to get exactly the feel you like. If not call me, we will go over the details. I will help any way I can.

Build it, fly it, crash it. Repeat as often as needed.
06-29-2008 05:50 PM
 
 
psych-lick
Veteran
Location: Austin, TX - USA

Should the expo be on the gyro or in the radio? Does it matter?

-Jeff T.
06-29-2008 06:06 PM
 
 
Olli-Pekka Mahrberg
Senior Heliman
Location: Finland, Joensuu

Quote 
Should the expo be on the gyro or in the radio?

In the radio. The gyro expo does not affect the same way.
06-29-2008 06:26 PM
HOMEPAGE  
 
 
Buzzin Brian
Elite Veteran
Location: College Station, Texas

He is indeed correct. Sorry for not making that clearer.

Build it, fly it, crash it. Repeat as often as needed.
06-29-2008 06:28 PM
 
 
RappyTappy
Elite Veteran
Location: Las Vegas, NV

I have settled on about +15% rudder expo using a DX7.

Chris
Xero G

Forever Brothers
Mickey Tylo
06-30-2008 12:29 AM
HOMEPAGE  
 
 
plantone
Senior Heliman
Location: Rotorua New Zealand

thanks guys.

Buzzin Brian
do you think the servo arm at 11mm is on the short side it go out to next hole 13mm i think & i feel the gain would probably stay pretty close to the 56% i am at at the moment it was holding well with no signs of hunting at all. This will of coarse make centre slighty more responsive but i can calm that down with expo. I like a fair bit of expo even upto 60% in the hovering being reduced to 25% in aeros. but this comes from F3C flying not 3D.

Also i noticed that is you hold the P button in some of the charectors on the G view display dissapear is this normal?? is that why i cant get into the other menus??

Thanks for all the help ill keep you updated after if been out again.

Wayne
NZ were kiwis do fly.

vibe 90
cs vigor
600N pro
600N super pro
hirobo chinook
Trex 700N
06-30-2008 05:37 AM
 
 
Buzzin Brian
Elite Veteran
Location: College Station, Texas

As for the servo arm, I am using the next hole to the last on a Futaba cross servo horn. I beleive that is at 13mm out on the arm. And it works great for me. I beleive I am running 30% expo, but run whatever feels best for you.

The characters dropping off are the G-View telling you the battery on the heli is low or not putting our adequate power to run everything. It is designed to be the first thing to start cutting out when power supply is an issue. This is something that needs to be looked into.

Build it, fly it, crash it. Repeat as often as needed.
06-30-2008 06:50 AM
 
 
plantone
Senior Heliman
Location: Rotorua New Zealand

Buzzin Brian

Thats interesting re. the battery status you mention i am running the align 2 in 1 the new one in the box & futaba 9252 servos with the align 1900 mah lipo its kinda strange if i fly until the battery leds go into the orange & then charge the battery it only takes about 800 mah to charge up is this irrelivant ??? i use more than one battery during the day but all show the same symptoms so assume that the battery status is incorrect. Would you reckomend a larger battery with a higher C rating or loose the align 2 in 1 reg.

Wayne

vibe 90
cs vigor
600N pro
600N super pro
hirobo chinook
Trex 700N
06-30-2008 07:02 AM
 
 
RappyTappy
Elite Veteran
Location: Las Vegas, NV

The reason for going out on the servo arm is to utilize the servo speed better. I would highly recommend going out on the arm.

Also, about the 2in1, mainly use the battery indicator as a general guide. If you want to know what your battery status is exactly for piece of mind, then I would recommend a battery checker.

As far as G-view, I've had it drop characters sometimes and sometimes it has been hard to get into the modes as well. This is on fresh charged packs. It's pretty much the only funk I encountered.

Chris
Xero G

Forever Brothers
Mickey Tylo
06-30-2008 08:54 AM
HOMEPAGE  
 
 
Footey
Senior Heliman
Location: Hamilton New Zealand

Wayne,

You need to put your 14MZ into GY-NORM then adjust the gain on the radio until it says 39 on the G-View, it should work out around 15% on the radio.

I set one up on Aarons 600 Nitro on the weekend not sure what the gain setting was in the radio but we just adjusted it util it said 40 on the G-View (It wouldnt sit on 39) and it works very well, we have been having a bit of a play with the fast piro stop rates etc as he didnt like the hard stop kick back.

You need to keep holding down the P button for a few seconds to get to each of the menues.

Give me a call tomorrow and I can talk you through it.

K
06-30-2008 12:05 PM
 
 
tadawson
Elite Veteran
Location: Lewisville, TX

I have had my G-View get wonky on a freshly charged 4.8v pack. I think CY needs to have a look at the voltage requirements on this thing - in my mind, it's way too conservative. (Oh, and the 4.8 was not the actual "flight pack" in that case, just one I was using to setup while waiting for my regulator to show up. The only thing on it was the Solid-G at the time . . . although I do still have two helis that fly on 4.8). The warning/dropout levels (at least on mine) make it appear that they only want this thing run on a 5 cell or 6V system, which is nuts. If that's the case, please say so in the docs . . .

- Tim

The more I touch electrics, the more I grow to hate them . . . .
06-30-2008 06:43 PM
 
 
Footey
Senior Heliman
Location: Hamilton New Zealand

I havent had any problems with voltage on my SG but I do use a 4000mAh Lipo on an Align 2 in 1 reg
07-01-2008 12:15 AM
 
 
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Radio - Servo - Gyro - Gov - Batt > CY SOLID G & T REX 600
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