Gyrobot Information and Configuration Thread

[CF_Machete]

Originally Posted by kyalamikid

Thanks PF, I have moved the balls as far inboard as they can go on the 420 servos about a month back already. As the balls are mounted on the inside of the servo arems, they will hit the casing hub, and barely clear it now. Seem to recall they are around 8.5mm now.

Do you find the responsiveness of your 700 just as fast as the flybar was on cyclic (ail & ele)?

for pocofly's 7 mm distance, you need to gind down the post of your ball and place a washer on your elevator servo before you attach the horn. did it to mine and used picoflys setting, works great.
I generally don't like expo, but prefer D/R this way your servos will still run on a straight curve, but the end point will be limited. so your felling will be constant, but your bird won't be as likely to get away form you.

[Picofly]

Originally Posted by kyalamikid

Do you find the responsiveness of your 700 just as fast as the flybar was on cyclic (ail & ele)?

I would say my Gaui is a responsive one. But it was more than six months ago when I sold my flybared EP200 so, I have to trust on my memory.

Responsiviness of the cyclic controls depends on 'travel adjustment' settings (or ATV in Futaba radios?). With my current setup 35% is too low and makes my heli suggish, whereas 50 - 55% is too fast to my skills. With 50% travel adjustment settings my heli practically flips aroud itself. So at the moment I use 46% travel and 10% expo on cyclic.

Just wondering, what kind of 'Swashplate Limit' setting you have? And which servos you have on cyclic (torque, speed)?

[kyalamikid]

I have swash limit set to 500, and I am using stock Align servos. Using the speed servo setting.

Specification:
-Stall torque: 1.8kg.cm(4.8V)
2.2kg.cm(6.0V)
-Motion speed:0.13sec/60°(4.8V)
0.09sec/60°(6.0V)
-Rating voltageC 4.8-6V
-Temperature range:-20°C~+60°C
-Dimension:22.8 x 12 x 25.4mm
-Weight:13.5g

[Picofly]

Originally Posted by kyalamikid

I have swash limit set to 500, and I am using stock Align servos. Using the speed servo setting.

Specification:
-Stall torque: 1.8kg.cm(4.8V)
2.2kg.cm(6.0V)
-Motion speed:0.13sec/60°(4.8V)
0.09sec/60°(6.0V)
-Rating voltageC 4.8-6V
-Temperature range:-20°C~+60°C
-Dimension:22.8 x 12 x 25.4mm
-Weight:13.5g

Your servo specs sound good. Do they operate smoothly? The first cyclic servos I had (Maxwell DS60) moved in small but visible steps and therefore my cyclic controls were "jumpy". Upgrading to Inno Lab HD202's and shorter servo arms removed those issues.

I am not 100% sure if it helps with your issues but you could try to use higher 'SwashLimit' value if it does not cause binding. My Swashlimit is +1000. It should be as high as the rotorhead & swashplate allows without binding.

[Jyri]

My Protos had its maiden flight and the settings that were recommended in the manual were WAY too slow (20% ATV + 50% expo), It seemed to feel more normal with 40 % + 40%...have to continue with settings tomorrow.

[kyalamikid]

Originally Posted by Picofly

Your servo specs sound good. Do they operate smoothly? The first cyclic servos I had (Maxwell DS60) moved in small but visible steps and therefore my cyclic controls were "jumpy". Upgrading to Inno Lab HD202's and shorter servo arms removed those issues.

I am not 100% sure if it helps with your issues but you could try to use higher 'SwashLimit' value if it does not cause binding. My Swashlimit is +1000. It should be as high as the rotorhead & swashplte allows without binding.

They are very smooth, I don't think the servos themselves are the issue, and they really cannot go more inward unless I mount the balls outside of the arms which will screw the geometry. 500 is as high as I can go before the swash binds.

Originally it was around 370, but when I moved the balls inwards I could push it up to 500. The min and max values on the collective are 1500 both ways. Also, if I moved the balls in further (by using other servos) I don't think I would get the 14 degrees collective pitch I am getting now.

[kyalamikid]

Originally Posted by Jyri

My Protos had its maiden flight and the settings that were recommended in the manual were WAY too slow (20% ATV + 50% expo), It seemed to feel more normal with 40 % + 40%...have to continue with settings tomorrow.

Great to see a Protos on the GB...hows it working out?

I am using 60% ATV's and 10% Expo, but this things is real perky at these settings. Maybe I just need to fly it move and try and reduce further along the road.

[Picofly]

Originally Posted by kyalamikid

They are very smooth, I don't think the servos themselves are the issue, and they really cannot go more inward unless I mount the balls outside of the arms which will screw the geometry. 500 is as high as I can go before the swash binds.

Originally it was around 370, but when I moved the balls inwards I could push it up to 500. The min and max values on the collective are 1500 both ways. Also, if I moved the balls in further (by using other servos) I don't think I would get the 14 degrees collective pitch I am getting now.

Ok.

Low SwashLimit just sounds like you will be able to use only a small portion of servo's throw.

I don't know Trex 250 that well but moving linkballs inwards works very well with Gaui EP200. It makes cyclic controls much smoother but keeps them still fast enough. Do you need 14 degrees of collective pitch with Trex? 11-12 degrees is good for EP200 if one keeps headspeed high.

You may be able to lift your elevator servoarm and give more room for the linkball that way. This is what I have done : https://www.helifreak.com/showpost.p...3&postcount=57

[CF_Machete]

I have to agree with picofly. I copied his mod and it took me 30 minutes, start to finish. the tooth pick trick is the easiest method to grind off the post on the ball. then just slide a washer around you servo axel and replace the horn...easy.

[kyalamikid]

OK guys, you win. I have moved the balls further inward, so my arm length is now 7mm. It was 9mm and original fybarred it was 13mm. Filing the balls was a pain, they are stainless stell, so eventually I used the balls in a dremel against an abrasive disk. Swashlimit is now 1,000, although pitch is restrained to 12 degrees now.

Of course the weather has gone for a ball of chalk, so I wont get to try it for a little while, but I will let you know how it goes.

[CF_Machete]

i just flew mine with acro mode using picoflys settings and stock acro settings. it was awsome. the only thing is that the if I let go of the cyclic, to test the auto leveling ability, it wobbles a bit. othe than that, it was sweet. I'm going to turn up the acro gain and drop the gain on my cyclic a bit to get it perfect.....after I checkk my main shaft and reset my pitch.

I got brave and hit a tree

EDIT: HAHAHAHAH Heli 1 tree 0. No damage, just reset my pitch and I'm back in action...with a few scratches.

[Picofly]

I replaced tail pitch links of my Gaui EP200 with new ones and had to reduce Gyrobot rudder gains to half of the original ones. Here are the new settings which feel very good after some 10 test flights:

I am using a Gyrobot 700 in my Gaui EP200 FES with the following setup:

PHYSICAL SETUP:
------------------------------
- Hyperion DS09GMD on tail, 7,5 mm ball joint distance
- Inno-Lab HG-D202HB's on cyclic, 7.0 mm ball joint distance

TX SETTINGS (Spektum DX6i):
--------------------------------------------
- aileron travel adj. +/- 48% (in transmitter)
- elevator travel adj. -/+ 48% (in transmitter)
- pitch travel adj. +/- 85% (in transmitter)
- aileron expo 40 % (in transmitter)
- elevator expo 40 % (in transmitter)

GYROBOT SETUP:
-------------------------------
- Program version v 1.4
- Tail servo type: ´Futaba S9253/54/57´ (with my servo this works far better than 'standard')
- Rudder min & max: 1000
- Rudder P: +175 (I had to reduce this setting to 50% of original)
- Rudder I: +200 (I had to reduce this setting to 50% of original)

- Cyclic servo type: 'high speed´
- Swashplate center: 0000,0000,0000
- Swashplate limit: +1000
- Pitch min & Pitch max: 1500
- Elevator P: +300
- Elevaror I: +550
- Aileron P: +300,
- Elevator I: +600

- Aileron & elevator feedback: +0005
- Deadband (for all three axis): 0030

Overall feeling of the heli is very good with these settings. It is very stable yet fast enough.

[kyalamikid]

Great to hear that is going well PF, and thanks for the settings. I am waiting for my GB700 to get here to start on the Trex 500. Hopefully this weekend if the postman smiles at me....

BTW I see you are using V1.4 firmware. What are the differences between V1.3 and V1.4?

[Picofly]

Originally Posted by kyalamikid

Great to hear that is going well PF, and thanks for the settings. I am waiting for my GB700 to get here to start on the Trex 500. Hopefully this weekend if the postman smiles at me....

BTW I see you are using V1.4 firmware. What are the differences between V1.3 and V1.4?

There is a new 'piro optimization' feature in v1.4 firmware but I haven't played with it yet.

See the attached link: http://runryder.com/helicopter/t512992p7/

[kyalamikid]

OK, that has been in the GB900 all along, guess V1.4 just moved it to the GB700 as well (I see that 1.14 is specific to GB700 only). Does your Gaui pirouette smoothly with the GB700 without any setting then?

[Jag72]

I loaded the piro opt into my gyrobot 700's (have 3 now)
and it really helps smooth things out in the hard piro moves...it's especially noticeable in the piro flips/funnels and piro tic tocks...

the machine is much more predictabe in my opinion and flies better ...

[kyalamikid]

OK question on swash leveling with a Gyrobot for those who know (Jag are you out there)....

I am setting up the swash and have a slightly low elevator only at maximum collective. How can you correct for this?

[robl]

posted on other threads as well, has anyone gotten the acro mode to work with a decent piro rate?

[Jag72]

That's a condition I see all the time in my vbar machines....and with that system you can change the travel of an independent servo...BUT with Gyrobot I don't think there is any way to make one servo travel more or less than the other 2...


usually this is a condition that appears with used servos that are wearing out and are no longer consistent...you may have to replace that one servo with a new one...


Anthony

[kyalamikid]

Thanks Anthony, I suspected this to be the case. In my particular circumstance it seems to have been the Geometry of the front cyclic metal links. They were pretty wide spread to avoid the servo arm ball/link from striking the servo body at full negative pitch on my new JR 3517 servos.

I have since adjusted geometry using larger arms, and the balls mounted inside the arms. This has solved the problem. The difference was around .3mm at full pitch, which probably wouldn't have amounted to much, but had me thinking about how to adjust it on the GB.