Gyro gain adjustment option in Tx

[dribbe]

Originally Posted by fr0stbyt3

Yup.

I had to lower mine about 15% (on a dx8, so don't take it for granted on a dx7 or dx6 for example) because of a slight tail wag (imagine that... tail wagging mCPx)

This is not unexpected. Sounds good.

David

[1stvan]

This feature operates at 130 x?

[dribbe]

Nope. Different method for the 130. Suggest checking its forum or product page.

130x. You can start here.
http://www.horizonhobby.com/pdf/BLH3780_Gyro_menu.pdf

David

[Birdmanpa]

Have been trying the new Mcpx Bl since yesterday, with fairly annoying wag. Went into Gyro on my DX7S changed from inhibit to on, Gear is the selected channel and changed 0% to -15%, then -5% with the same results, worse wag and sloppy tail in turns, tail sways back an forth. I am not sure if I have a bad gyro or some other defect, Will appreciate any input.

[pert]

I just picked my mcpx bl to day tried to bind it . right hand servo went all the way down and scream like a pig set up is from manual for dx6i pitc-R any idear did I do something wrong ?

[Jml9771]

I had tail wag and found that reducing the gain only made the tail wag more slowly but with greater magnitude. When I increased it to about 25% it smothed out just fine.

mCPX V2, mCPX BL, 130x, Compass Atom 500 fbl, Gaui X5 fbl
DX7s, JR XG8

[dribbe]

Originally Posted by Birdmanpa

Have been trying the new Mcpx Bl since yesterday, with fairly annoying wag. Went into Gyro on my DX7S changed from inhibit to on, Gear is the selected channel and changed 0% to -15%, then -5% with the same results, worse wag and sloppy tail in turns, tail sways back an forth. I am not sure if I have a bad gyro or some other defect, Will appreciate any input.

Re: wag


Try -30. -50. -80. -100? . Report!

Seems no one is trying lower gains and reporting result!

David.

[grovey]

Originally Posted by dribbe

Re: wag


Try -30. -50. -80. -100? . Report!

Seems no one is trying lower gains and reporting result!

David.

Since my reporting of findings is based on memory after flying I think it would be best if I write down all values I try and the results and send you that.

Hopefully I can get to fly tomorrow and record gain settings and results.

[Lompma]

-50 very little wag but was to sloppy for 3D. I am at +50 and it is much better for me. At that setting it wags in a hover but I don't spend a lot of time just hovering. If you want the tail to not wag or plan on "scale" this is not the Heli for you. It states "advanced" in the description. This is a 3D helicopter. It holds great In backward flight and this a good test of how well the tail holds.

[grovey]

Originally Posted by Lompma

-50 very little wag but was to sloppy for 3D. I am at +50 and it is much better for me. At that setting it wags in a hover but I don't spend a lot of time just hovering. If you want the tail to not wag or plan on "scale" this is not the Heli for you. It states "advanced" in the description. This is a 3D helicopter. It holds great In backward flight and this a good test of how well the tail holds.

Hope this is not aimed at me. The wag is annoying but will not detract me from flying. I fly 3D and the tail has held.

[Lompma]

No not at anyone just a general statement/opinion. I saw your vid and you obviously know what you are doing.

[Commodore8888]

I'm going to start sweeping up and down the gyro gains using the same maneuvers and headspeeds. So far everything is great except for fast hurricanes where it'll oscillate at 25%. No blow outs or lead/lag. Going to try some lower values.

[bj660raptor]

would uping the gain get me a faster piro rate,btw that would be the only time it wags is in a hover,full collective funnels and this thing is a rock! Want some edge carbon blades and colored tail blades,and different cano options,by far the best blade heli out there.

[Andrillox]

Originally Posted by pert

I just picked my mcpx bl to day tried to bind it . right hand servo went all the way down and scream like a pig set up is from manual for dx6i pitc-R any idear did I do something wrong ?

This happened to me too. To fix it, I did what I have done a million times with the mcpx. Take the servo apart and clean the strips. Also, make sure the brushes that slide on top of that strip are straight and sticking out of the servo mechanics slightly so that it applies enough pressure on the strip. When I put it back on it centralized at start up and flew perfect.

[kryton]

I want one
I was thinking 130x but not any more this sounds like what I want

[Kendo]

Originally Posted by dribbe

Re: wag


Try -30. -50. -80. -100? . Report!

Seems no one is trying lower gains and reporting result!

David.

Other than the tail gain, is there a way to change FBL rates? I know its a long shot but I'm really hoping there is some hidden feature.

Btw, very nice of you to get involved and help out around here. Thanks.

[sjonak]

Great info! So, if I want to reduce my slight tail wag, I should decrease the gain, right? So I would set the gain to something negative...Any suggestions on where to start?

[sjonak]

Sorry folks, I think I clicked on the wrong "Reply" button before...anyway.

So if I have a slight tail way on my MCPX BL, I should enter a negative number to reduce the gain right? I undestand the range is -100 to 100. Any thoughts on where to start or should I just experiment?

[bradharvy]

Originally Posted by soljkaer20

Hi Guys,

The gyro gain is adjustable for the tail.

It uses channel 5 (gear channel).

For DX7s, DX8, and DX18 radios
Gyro menu off = 0% gain on channel 5. This is the stock gain and the helicopter will fly just fine here.

Gyro menu on
0% = stock gain.
Increasing the number will increase the gyro gain. Range: 0% to 100%
Decreasing the number decreases the gain. Range: -100% to 0%

For DX6i and DX7/SE radios
The neutral gain point changes from 0% to 50%

Gyro menu off = 50% gain on channel 5. This is the stock gain and the helicopter will fly just fine here.

Gyro menu on
50% = stock gain.
Increasing the number will increase the gyro gain. Range: 50% to 100%
Decreasing the number decreases the gain. Range: 0% to 50%

I hope this clarifies this for you guys.

Thanks,
James

On my JR9503, NORMALLY you go off of dx8 settings. Now in this case, when I turn on gyro sens, It shows 50%, not 0%, and will allow it to either the stunt switch or D/R rudder switch.(will not go plus or minus)
Now according to your write up the dx8 would be at 0%.So.
I have played with both, not really seeing a difference TBH. (Acting as if it were a 6i/7s and adjusting from 50% ..) I did set up TX and rebind.
Can you make clear for us JR guys, much thanks, Brad.

[TomC]

Originally Posted by dribbe

Re: wag


Try -30. -50. -80. -100? . Report!

Seems no one is trying lower gains and reporting result!

David.

Hi David,

Tried a lot of tail gain settings today, from -100% to +100% (with 0% = default).

The tail actually held pretty good at all gain settings, esp in FFF. BTW if anyone thinks that a motorised tail is ever going to be 100% wag-free in a hover like a TT or belted tail, they will be disappointed imho.

The main diff seemed to be the tail bounce-back. This got worse as you lowered the gains, and improved, up to a point as you raised them. So, for me, this so-called tail gain adjustment seems more like a 'Delay' adjustment like you would do on a conventional tail gyro.

The sweetspot for me (min wag in a hover and min bounce-back after a hard stop) was at +80%. I'm going to stick with that for now.

Great little heli btw!

Cheers,
TomC