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Old 06-30-2020, 07:20 AM   #21 (permalink)
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Please send me your contact information via pm here and I will have someone from PS contact you to setup the RMA or send out a replacement based on how they would like to proceed.

Best Regards,
Brian Bremer
Horizon Hobby, LLC
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Old 08-11-2020, 08:52 AM   #22 (permalink)
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Default Returned FC6250HX unit

Brian,

I apologize I did not see your last reply. I sent the FC6250HX unit it several weeks ago and requested it be sent to you for your inspection. I hope it got to you. I have not heard anything as of yet but when you figure out what happened I am interested to know. I will PM you my contact information in the event you need it. Thanks again Brian
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Old 10-29-2020, 08:54 AM   #23 (permalink)
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Brian,

Final update....the second FC6250HX FBL unit works perfectly and is VERY user friendly...I did receive a replacement unit for the one I returned so I'm looking for another heli to put it in Thank you for your help along the way!!
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Old 12-10-2020, 03:27 PM   #24 (permalink)
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Can we make this thread a sticky? Brian's info in post #1 is super helpful.

When should one adjust the degrees per second in the tail rotor PID menu? And how does adjusting "agility" change the feel of the heli?
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Old 12-11-2020, 06:06 PM   #25 (permalink)
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If you are happy with the rate of response of the aileron, elevator, and rudder, then you most likely don't need to adjust the rate of rotation. If you want to slow it down, there are two ways to do it. One, is to adjust the rate to a slower or faster rate but this will be an across the board change. Two, is to make your rate of rotation as fast as you need it to be, then use your dual rate settings per Flight Mode, to reduce the rotational rate. You need to change the settings so you have a channel set for active Flight Mode changes.

An example. You have chosen 300d/s as the fastest rate so let's say you want that on flight mode 1. For Normal, you feel you need it to be half that rate so you make your Dual Rate for your Aileron at 50%. That will give you Normal at 150d/s and FM1 at 300d/s. You need to adjust each of the Aileron, Elevator, and Rudder channels for the rate you want. You need to see that you are now flying by wire in that you are not setting the movement of the channel but how fast the model rotates about each channel axis. The gyro is controlling how the model behaves according to your settings. Hope this helps.

Don
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Old 12-19-2020, 05:32 AM   #26 (permalink)
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Default Tail Gain adjustment

Hello

Im Matt and new here. I have 8 Helicopters all with the FC6250HX inside.
now I have the new t-rex 650x and need a bit more gain at the tail.
I have a dx7 g2 and have @ Satellite, 6250 and transmitter the actual firmwares. My problem is that I have no changes at the tail gain if I set it to 50% or set it to 100%.
Im sure I have set up in the dx7 and the 6250 all right.
If I change for a test in the 6250 the gyro channel to the flightmode channel and change in the transmitter gyro menu the values the flight modes are switching.
Have maybe anywhere a idea what is the issue.
Thanks
Matt
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Old 12-21-2020, 04:48 PM   #27 (permalink)
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Matt,

Follow the initial post and use the tx gyro gains listed, increase the fwdprog P and I tailrotor gains slowly and test fly per the recommendations in the initial post. Set d to 10% and only worry about the P and I for now.

Considering the 650x's 1 : 3.85 tail ratio you will need to bring the fwdprg base gains up quite a bit.

Once the fwdprog->tailrotor gains are set you can make small tweaks with the tx gyro gain function and you will see a variance in the performance.

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Old 01-05-2021, 06:07 AM   #28 (permalink)
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Thank you Brian for the info, Im happy now with the tail.
I Have a few points in the fwdp menu with no ideas what i can change with this. Maybe you can short expain me for what canges/Settings it is.
Firmware is 5.05.00

Setup>Swashplate:
-E-Ring
-Phasing
-Decay

Setup>Tail Rotor>Advanced Setup:
-Phasing

Main Menu>Tail Rotor:
-Start
-Stop

Thank you so much.

Matthias
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Old 03-04-2021, 12:56 AM   #29 (permalink)
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Quote:
Originally Posted by HoverMe View Post
Can we make this thread a sticky? Brian's info in post #1 is super helpful.
Agreed!
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Old 03-04-2021, 06:05 AM   #30 (permalink)
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stuck
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Old 05-11-2021, 02:05 PM   #31 (permalink)
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Default Tx Gyro settings vs Forward Programing Gyro Settings

Great information and thread. Brian, can you explain what the transmitter gyro setting does relative to the Forward Programming swashplate (roll & pitch) and tail rotor PID's? I have a TRex 550 with the Tx Gyro set to 75 and have done all of my adjustments through the Forward Programming menu. I would like to understand how adjustments to the Tx Gyro affect the other FP gyro settings. Also, it would be great if HH put together a step-by-step PID tuning guide for small, medium, and large heli's that provides detailed discussion on the symptom and why adjusting or tuning a particular parameter has a certain effect and how to adjust to correct a certain behavior, such as dreaded tail wag. There are numerous YouTube videos on PID's and how they work, but as it relates to the 6250HX it is not clear why you are making a specific adjustment and what you should expect to see. Thanks and hang in there with us...
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Old 07-20-2021, 09:13 AM   #32 (permalink)
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Default Blade 300X Tail Stall

So I have been experiencing a problem with my Blade 300X that I believe may be related to gyro settings on the FC6250HX. I have a Scorpion 2213-14 motor with a head speed somewhere around 2700 RPM (85% throttle curve) when in fast forward flight, I give hard right input to switch directions, the tail sometimes stalls, wont piro around until it slows and then snaps around. I have full mechanical gain on the horn. The tail PID is P-68, I-66, D-9. Should I consider dropping the I further or increasing the P. I am afraid of raising P too much higher causung wag. Or do I put larger tail blades on?
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Old 08-30-2021, 12:29 PM   #33 (permalink)
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Quote:
Originally Posted by MasterRex View Post
So I have been experiencing a problem with my Blade 300X that I believe may be related to gyro settings on the FC6250HX. I have a Scorpion 2213-14 motor with a head speed somewhere around 2700 RPM (85% throttle curve) when in fast forward flight, I give hard right input to switch directions, the tail sometimes stalls, wont piro around until it slows and then snaps around. I have full mechanical gain on the horn. The tail PID is P-68, I-66, D-9. Should I consider dropping the I further or increasing the P. I am afraid of raising P too much higher causung wag. Or do I put larger tail blades on?

As mentioned in the original post;


After that it is time to move onto the I gain. Unfortunately this requires a little more skill in flight so please be sure you are comfortable with the procedure before performing the procedure. In fast forward flight at your highest head speed perform one or two fast pirouettes, if you note the pirouette rate varies then increase the I gain by 5% and test again. Keep adjusting until the pirouette rate in fast forward flight is consistent. If you note the pirouette rates oscillates at a high rate then the I gain is too high.

Generally if you bring the I gain up in the way discussed above you will find consistent pirouettes far before the oscillations begin. It is not necessary to push the I gain as high as possible, simply aim for consistent pirouettes. The tail will still hold very well even at low I gains, the above step is simply the best way to achieve the ideal I gain for the tail.


.............


Other possible causes;
a) Belt slipping, should hear a fairly loud braaaaap sound as you load the tail.


b) Lack of tail authority (2700rpm on a 300x is a fairly low head speed). Little tail noise as the blades stall but fairly quiet when you run out of tail authority.
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