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Align T-REX 600N 700N > JR770 advice __issue resolved!
 
 
Simmer
Key Veteran
Location: Massachusetts

I have now gotten about 8 tanks thru my new 770/8900 combo. I see some of the benifits, but I am still trying to figure this one out.

I have the expo set for +50 in all flight modes.
I have the dual rate set for 85%
These are the initial settings the manual tells you to start at.

I have been able to get it trimmed for no drift.
My Gain is at 55% HH and 39% non HH
My rudder ATV is at 116 +/- (tried 120 and it was REALLY fast at full deflection)

When I switch to non HH the tail feels very wishy washy, a little stick movement and the tail starts to go! (maybe gain up more?)
I keep thinking like the 401s that you need a difference between HH and NON HH so the gyro KNOWS which mode its in. I may be wrong here not sure.

When I am in HH (most all the time anyway) the tail holds well, but if I piro then let the stick come back to center the heli stops, and has a bounce back. I find I need to move the rudder stick back controling it all the way to center, gently, to prevent this. Not sure I like this, its taking more work to manage this way. With my 401 I could simply come back to center, no thinking about it, never such an abrupt stop or bounce, thats unheard of with 401.

Is it normal to have to baby it back to home position?

I still do not know what the Dual rate set to 85% is all about.
This is all setup in the Gyro function of my X9303 TX.

Any help in smoothing out this gyro would be helpful. I tried moving the gain down (HH) to 50% and it started to drift (nose to the right)

I retested in normal mode to make sure it did not drift and it looks pretty good there, no subtrim, no regular trim but again, this is in non-HH.

I also moved the Expo to 60% and felt no change
Tried changing Dual rate to 75% (from 85%) could not feel a change there either.

Some of you find this is a great gyro, once setup, I cant find the sweet spot, or I may simply need to change my flying style?

Suggestions?


I would like to get this thing tuned in.
03-31-2008 03:45 PM
 
 
DS 8717
rrProfessor
Location: Here wishing i was somewhere else

Turn your gain up to 60 or 61%. I have the Rudder atv at 75% and it is still real fast. I have 40% on the expo. I think the main problem is the gain is too low.
03-31-2008 04:01 PM
 
 
Simmer
Key Veteran
Location: Massachusetts

Low gain makes it hard stop?

and whats the dula rate thing? normally I would take thei to mean it inhibits full travel, so 85% give me only 85% of travel? but in the gyro menu maybe it means something else.

Ill reset the gain on HH to 65%

How about normal NON hh mode?
Loosey goosy would be low gain there as well, but my instints (prob wrong) says to keep NON hh under 50 and HH over 50.

Those guys using the gear channel as opposed to the Gyro menu must have differing numbers (I saw 35% a long while back on that)It may mean 35% from 100 which would be 65% in Gyro menu maybe
03-31-2008 04:08 PM
 
 
Simmer
Key Veteran
Location: Massachusetts

OK I think I have it now. I have read the directions at least 5 times plus. I reread the TX manual, and I now think I understand how it works and what it should be set to. Next tank will prove the theory. Looking forward to it. While its not too hard to understand now, I have to say, its now like the 401 really, and they manual has you set it up to have max funtionality. I only need a gain for rate note and non rate mode (HH) and a switch to put it in the mode I want. The rest as they say is gravy, but this is the first gyro I set up on a gyro menu so it took some time to "get it"

I can see where the frustration levels can rise with this gyro combo.
Time will tell if I keep it.
04-01-2008 02:55 AM
 
 
DS 8717
rrProfessor
Location: Here wishing i was somewhere else

High gain will make it stop hard. 65%is going to be too much,thats where i started and it wagged at that setting.I'm now at 61% gain.
Also to fast a piro rate will make it stop too hard,i dont use dual rates,i just set the rudder to 75% and thats still pretty fast.
I use the gyro menu on my 10X,i have the gain a little higher in throttle hold because it has less TR speed to hold it in that mode.
Another thing i found out is you cant run as much gain with the Align 95mm carbon tail blades,i am using some 92mm rotortech blades.A lot of guys here use the K&B 85mm blades and they work good also.
04-01-2008 09:35 AM
 
 
Simmer
Key Veteran
Location: Massachusetts

OK skids should be here today or tomorrow, Ill get it up Wed I hope, Gain is set to 62, now. If I take 150 and subtract 85 that gives me a dual rate (ATV equiv) or 65. Have to find a wheel that gets me to 11mm. The default JR wheels is 12mm.

So MR10X, if you let the rudder stick fall to center, just let it go itself, will your tail bounce?
04-01-2008 12:53 PM
 
 
DS 8717
rrProfessor
Location: Here wishing i was somewhere else

I dont get any bounce back at all,i never let the rudder go when i fly. I dont use dual rates,i set the ATV for how fast i want the piro rate in idle up mode,i dont do much in normal mode when i fly.i dont think 11mm on the servo wheel is enough,you might not get full travel with that small of a wheel,the align wheel works perfect when you get the other setting right.
04-01-2008 01:09 PM
 
 
Simmer
Key Veteran
Location: Massachusetts

Alrighty now! one happy camper finally. I know why some don't prefer this gyro as it took me some time to sort out what to do and how to do it on my transmitter.
I have excellent results to report now. I went to the field today was pretty windy. I literally did not have to touch anything on my setup.
It is bone stock as per the instructions.

x9303
11 mm on the servo horn (used the white one that came with the 8900 servo, not the wheel but the straight arm, I cut off the last two holes to shorten it. The 3rd hole in from the end was 11mm out)

Dual rates set to 85% in normal, ID1, and ID2 -Automatic turned off
Expo set to 50% in all modes normal, ID1, ID2
ATV for rudder set to 150 +/-
Gain set to 60% HH
Gain set to 39% rate mode.

No more hard stops, very predictable, respectable piro, not killer but pretty quick
The travel adjustment on the gyro itself was not set to max movement, but was turned down slightly. I def wont be hitting the ends of travel.

I am very happy with the results, and I admit it took me a while to get it right, but if you look at what I ended up with, I guess my lesson here is read and follow the recommended settings to a T.
Its not like I didn't read it, but I thought.. oh 12 mm is good enough, etc.
04-04-2008 12:06 AM
 
 
jaycab
Senior Heliman
Location: The Magic City

About time...What took you soooo long?

Jaycab
04-04-2008 01:33 AM
 
 
MIKe27
Senior Heliman
Location: Florida,US

Hey guys, why is my HH @ 35, if i go higher it will wag... what can i do???
04-04-2008 01:37 AM
 
 
jaycab
Senior Heliman
Location: The Magic City

MIKe
Read the post from start.I do admit it is a little challenge
What radio you have?

Jaycab
04-04-2008 01:43 AM
 
 
Simmer
Key Veteran
Location: Massachusetts

Mine is setup in the gyrp menu not in the gear channel.
Also I think if the servo arm is longer like 13mm it will be much more sensative, you would have to set the gain lower.

jaycab... I know huh !
04-04-2008 01:45 AM
 
 
RYOTGEAR
Heliman
Location: USA

Simmer,is your expo positive or negative?

MATTER SET FREE
04-04-2008 02:07 AM
 
 
nappyroots2182
Key Veteran
Location: Moline, il

heres my settings. but i feel my pyro is too fast and the stops are to soft. how do i adjust this gyro to do what i need??

rudder atv at %110
gear channel at +25 and -30
exp at +30
d/r at %100

what really does everything mean or do. im only used futaba till now so i never needed d/r, exp

DX7, Trex 600N, YS50, JR770 gyro, trex 500
04-04-2008 02:15 AM
 
 
fiveoboy01
Veteran
Location: Waunakee, WI - USA

Turn your dual rate down to slow the piro rate.

Trex 450SA blinged, Trex 600N, DX7
04-04-2008 03:12 AM
 
 
DS 8717
rrProfessor
Location: Here wishing i was somewhere else

max you atv to max setting ,then set your dual rate to 75% for starters.then adjust your dual rate to get the speed you want.
04-04-2008 06:10 AM
 
 
Simmer
Key Veteran
Location: Massachusetts

my expo is positive.

I ended up removeing the Zeal tape and put the gyro down on the stock double sided foam tape.
my problems were I think, related to three things, initially my atv was set to low (116) my gain was set too low and probably the zeal tape was too flexable

Mike27,
What radio do you have and what channel are you setting the gyro up or? a guess tells me its the gear channel but want to be sure.

setting up on the gyro menu gives a number higher than setting on the gear channel because for hh 50%= to 0% on gyro menu
but on gear channel 0=0%
like wise in the gyro menu 60% = to 20% gain(HH)or 10 more than the zero point but for gear channel to achieve the same gain you set it for 20%
THESE NUMBERS WORK BASED ON THE ATV BEING SET TO 150+/- to give you higher resolution

Me ending up at 60 is really like 20% on gear channel I think.

While I am not positive, I think its important to set the rate mode gain as well appropriately for the thing to work right.
so I "think" your gain on gear channel is 30 or 31 in HH and -30 31 in rate mode. Set both modes.
04-04-2008 10:23 AM
 
 
MIKe27
Senior Heliman
Location: Florida,US

I have a DX7 and i have it setup in the Gear ch. and my Travels are 100/100, should i take them up to 150/150????

Thanks
04-04-2008 11:52 AM
 
 
Simmer
Key Veteran
Location: Massachusetts

absolutely. This gyro is designed to be set up this way. the other settings are geared around the atv at 150. if the window of resolution is 150 as opposed to 100, you will have greater resolution. At 100 the gyro becomes very touchy. Gain 1 or two points either side and it wags/or doesnt hold. When set up per the intructions, even a gain change of 2 points is about all you will need. so you still have a very small window of adhustment. The 150 atv makes it manageable.

My gyro was crazy set to 116+/- and stopped and bounced after a piro.
its like night and day difference now.

Now remember, with the atv at 150 your dual rate setting will cut this number down. if the dual rate is set to 75 and atv to 150 your piro rate is equivelent to 75 (not 150)
04-04-2008 12:24 PM
 
 
nappyroots2182
Key Veteran
Location: Moline, il

so i should set atv at %150, d/r at %75. but what should exp be and the % in the gear channel. this is on dx7. thanks. its holding good at the numbers listed before but id try to make it better if possible

DX7, Trex 600N, YS50, JR770 gyro, trex 500
04-04-2008 01:32 PM
 
 
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Align T-REX 600N 700N > JR770 advice __issue resolved!
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