JR 2610 GY401

[henrik04]

Hi guys,
I have a strange combo but I'm hopping that it will become interesting.

Radio is JR2610 and heli is a Mini Titan E325.
The original JR package combo came with the G410T gyro.

I decided to go for a 'better' gyro and I do have now the Futaba GY401.
I got a Futaba S3154 servo in the process.

Not too sure how to setup these little guys.

Is this combination workable towards a better hold?

Thank you in advance.

:)

[Coolice]

Hey,

You cant go wrong with the 401, they are far superior gyros to similar units from other manufacturers. Although it will be interesting to see how the little JR one performs that has appeared in another thread.

The setup is quite simple and you will not have any problems.

To save me typing instructions out there is a good article here : http://www.trextuning.com/setup-gy401.php which hits the nail on the head when setting up the 401's.

See how you get one, any problems jsut ask.
.

[henrik04]

Hey,

You cant go wrong with the 401, they are far superior gyros to similar units from other manufacturers. Although it will be interesting to see how the little JR one performs that has appeared in another thread.

The setup is quite simple and you will not have any problems.

To save me typing instructions out there is a good article here : http://www.trextuning.com/setup-gy401.php which hits the nail on the head when setting up the 401's.

See how you get one, any problems jsut ask.
.

Thank you very much for the link. I'm going to read it and double check everything.

My first confusion was that the GY401's manual talks about "AVCS" and normal mode. All thread related to GY401 use the "HH" mode. (Assuming that this means "Heading hold")..

First problem was that the Futaba connectors don't enter the JR receiver.
A quick fix with Dremel sanding fixed the issue.

Second problem was that for some unknown reason to me, the rudder direction became inverted and as soon as I started the E325 engine, tail was acting as a fan. Flipping the switch called "DIR" on the GY401 cured the problem.

After many trials and error I did set up as follows:
- Rudder to GY401 Rudder input.
- Gear to GY401 gain.
- Gear connected to switch named "Ail d/R" 30% 73% on the Tx.

The mechanical setting of the tail was easy and so was the limit setting potentiometer on the GY401. :mrgreen:

After this I had a quick try in the driveway to see if the gyro was doing for me what it is supposed to. IT DID! :mrgreen:

What was unclear in the manual is that one should always start in AVCS mode (HH mode??) to set the 0 on the rudder even if switched to "normal mode" 3 second later.

As I am a newbie I real scared to take it of the floor :shock:

I am sure many will laugh at my ignorance, but what am I supposed to expect in AVCS mode? (In opposition to normal mode?)
Is the heli is going to fly to the west cost by itself :?:

I thank you in advance for answering as the only help available here is.. Faith.. :lol:

[Coolice]

Hey,

LOL, this part "Is the heli is going to fly to the west cost by itself :?: " made me laugh.

No, dont worry about sounding ignorant as you are not and indeed asking is ahowing you are willing to learn and progress in this wonderful hobby which is good to see.

Your welcome for the link, I have on numerous occasions written pretty much the same and indeed pointed out the last bit to the web master that the gyro needs to be taught the new neutral setting after initial setting up and so it was added after.

Yes, Futaba refer to Heading Hold as AVCS (Active Angular Velocity) but they are essentially one and the same so dont worry.

The locating lug on the plugs is normal, JR use chanfered sides on their plugs and Futaba have the lug. As I fly JR radio I to have to do the same, it's an easy job as long as you dont slit your hands with the scaple doing it :arggg:

The rudder direction you may find was just a by product of the different gyro, the servo pulse into the unit is perhaps handled differently and so the Tx. reverse just needed changing which you done ok.

Gain I have found on a JR set using the gear switch is as follows :

0~49% = 0~100% in either heading hold (AVCS) or rate mode
50~100% = 0~100% in either heading hold (AVCS) or rate mode

I cannot remember for certain which half of switch travel is what, but it's easily seen with the red LED on the gyro and yes the gyro must always be turned on in Heading Hold (AVCS) to work properly. If it isn't then the gyro doesn't initialise right and will not hold. If you dont turn on in AVCS mode, turn the model off switch to AVCS (HH) mode and turn on again.
When you first turn on the model the transmitter must be on, with the rudder stick in the middle and heading hold (AVCS) mode selected by the switch. Then turn the model on, allow the gyro to initialise this will be signalled by the tail servo moving to neutral and the red LED turning on. Now you are ready to fly assuming all is setup correctly with regard to reversing switches etc.
The gain you leave set to where no hunting occurs, but you must not move the model while it initialises.

If the model flies well in rate more and the tail is trimmed in nicely, then toggle the gain switch 3 times fast and end with the switch in heading hold. This teaches the gyro the new neutral position. Now try taking off again in heading hold (AVCS) and you will immediatly see the tail is a lot more solid and better held.
Heading hold keeps a tighter hold on the tail and so it will not weathercock into wind or swing round in high speed sideways or backards flight. All of this is probably beyond your skill level now but you'll seen see the benefits.

Have fun, be safe and let us know how you get on.
.