eclipse 7, gy401, swift 16

[wetwolf]

yippee, finally got a 401 for the swift, have it installed, was looking thru the hitec eclipse 7 manual and it says the gyro output is on channel 7, the 401 manual says channel 5. anybody using this setup?? what are your settings. this is my 1st HH gyro and I would like to at least have 1/2 a clue as to what i'm doing before i send the swift up. :D

Da Wolf

[Gadget01]

Hey Wolf... it's easy- just plug the tail servo in directly to the receiver to verify which channel it's supposed to be in. Once you switch the connectors back to normal, verify that your rudder channel is set in the correct direction followed by the gyro's normal/reverse switch. Tweak your servo's position on the tailboom so the throw is nice and centered. Then tweak the limit on the gyro until you get maximum pitch without any binding. If you have a digital tail servo, set the DS switch to "on" and the delay to "0." Never use subtrim on the rudder channel. The rudder channel endpoints establish your pitch range- which establishes your piro rate.

The remote gain connector should be plugged into a channel that has switched control, like a landing gear switch, etc. You can then use this switch to toggle between rate mode and heading hold mode. By default, a channel like that is typically 0 at one switch position and 100% in the other. The 0-50% range sets it in rate mode and the 51-100% sets it in heading hold mode. The closer the settings are to the extremes, the greater the sensitivity. So if you left the settings for that channel at 0-100%, it would switch from rate to heading hold, each at maximum sensitivity- most likely too high. Dialing it down from 100% to 75% (which is a good starting point) would set the heading hold mode sensitivity at half, since that is halfway between 50 and 100.

This is the quick and dirty way to get it set up and airborne quickly and it will most likely perform well if you always have it in heading hold mode. Getting it perfect for rate mode flying requires a little more attention to mechanical setup precision.

[Fred Bronk]

The 401 needs to be in a diff channel on the Eclipse. I think it is the flap switch (not sure) but NOT the gyro plug though for sure!

FB

[wetwolf]

Allrighty, got it set. the HH lead goes to ch7 on the hitec and I set it at 75%. Will be trying it out later today when the temp gets above 40deg. :)

Thanks guys.

Da Wolf

[Fred Bronk]

Try about 55-60%, that is more than enough on many radios. On my EVO it sets on 40% and flys great.

FB

[rotoraddict]

Careful with the gain settings when using TX's other then Futaba's that have the channel 5 software specifically designed for use on their gyros and designated for use with both Yaw rate and HH gain settings.

If your channel seven has an ATV type of setting that has -100 to 0 that controls a servo's travel from mid stick to one side when the switch is in one position, and from 0 - +100 that controls its travel on the other side when the switch is in the other position, then one side/switch position will switch the gyro into Yaw Rate mode and control the gain amount in that mode, and the other side/switch position will switch the gyro into the HH mode, and control the gain amount in that mode.

So be sure to determine what mode it is in before setting gains. That is covered in the GT-401 instructions and is why they suggest starting at the 50% ATV gain settings on each side of the switch, and going up or down from their after test flying it.

[thanhTran]

I have Eclipse 7, Swift, and GY401, but the GYRO gain channel IS on channel 5, rudder is on channel 4. Not sure why you say it's on channel 7? Channel 7 is one of the flip switch which is independent of flight mode. When you have gyro gain on channel 5, the gyro gain will depend on flight modes.

-Thanh

[wetwolf]

I have Eclipse 7, Swift, and GY401, but the GYRO gain channel IS on channel 5, rudder is on channel 4. Not sure why you say it's on channel 7? Channel 7 is one of the flip switch which is independent of flight mode. When you have gyro gain on channel 5, the gyro gain will depend on flight modes.

-Thanh

Thats interesting, this is out of my eclipse manual

Gyro settings are used to automatically control the gyro's
gain in different flight modes. It may be set to different
values in NOR, ST1, ST2, and ST3 flight modes, allowing
you to pick the gain you need for each circumstance.
The Gyro settings control the output at receiver CH7.

When I went for the test flite, the tail was hunting like crazy and when I changed the gain on the TX it didn't seem to help at all. I guess I will plug into ch5 and see if that helps.

Da Wolf

[wetwolf]

OK, on my eclipse, the gyro setting is channel 7, it is a flip switch, so I can turn it on and off. I have the rudder servo dead nuts center so that it will hover with no rudder input and stay straight. I have ch 4 trim and subtrim at 0. I have the gyro gain set at 75%. When I power up in HH mode, the bird wants to turn right and i have to give it constant stick to stay centered. If I flip to rate mode, it flies fine. I have tried reinitializing the gyro both by repowering it up and flipping it in and out of HH 3 times with the switch, but it still won't hold.

Any ideas???

Da Wolf

[rotoraddict]

What servo are you using on the Gyro?

[wetwolf]

a 9254

Da Wolf

[thanhTran]

Interesting problem!
So when you have the gyro in HH mode, does the servo creep at all?

[oded mazor]

my 401 on Logo 10 & Logo 20 with the eclipse is connected to CH7 as well. you can toggle from HH mode to rate gyro with 0-100% for each.
could not get it to work properly when I connected it to VH5 as instructed somewhere.

using 9254 on the Logo 10 and Hyperion digi SD20GMD on the Logo 20, both with great success.

good luck, Oded.

[Cyclick]

Does your radio have trim step adjustments (to set the steps of trim finer or corser).

If it does, and they are set to be too course, you can get drifting when in the HH mode.

[rwp]

I have Eclipse 7 and 401 using a 6 channel receiver therefore channel 4 and 5 are used. Gyro set to 50% is off. 51-100 is HH mode. 49-0 is rate mode. Set Gyro to 30 and move your servo till tail slider is centered then set the endpoint with gyro limit control so servo does not buzz. When you lift off heli in rate mode you can either move the servo slightly till tail holds or you can use a little subtrim. When set in rate mode switch to HH mode and you are set. Mine are set in the 70-80 range. I've used this method on my heli's with good results.

[wetwolf]

Well, I tried it on channel 5 today with the gain set at 70. same thing, bird turns right. cant switch to rate stting now since its on ch5. will be switching back to ch7 for the gyro signal. Whilst scrolling thru the setup on the TX, I noticed that i had the throttle>rudder setting at 10. I had set the revo mixing to 0 like the 401 instructions said, but isn't throttle>rudder setting the same thing??? I am going to set that at 0 and see what happens. Of course, it's raining now, so no test flite. :(

[wetwolf]

well I tried setting throttle>rudder to 0 on both sides of the rudder stick. same thing. I send it up in rate mode and it does fine. Set it back down, toggle the rudder or gyro switch 3 times to set rudder neutral, get the solid LED, so i knw it's in HH mode. send it up, and it still turns to the right. I can flip back to rate mode and it works fine.

any other suggestions??

Da Wolf

[rotoraddict]

When you turn your RX power on, are you in the HH mode.

Just do that and do not flick any switches.

Then you will know it has initialized and saved you neutral setting when the led goes solid.

Then try to fly - all should be good.

[wetwolf]

I have tried disconnecting the battery and plugging it back in. The LED goes solid, so I am in HH mode, but when I lift off it still turns. I can switch to rate mode with the switch and it flies fine. When I switch back to HH ( LED on) it turns on me.

Kind of a bugger, it hasn't helped that we have been below freezing for about 3 weeks now. It's hard to get test flites in.

[Gadget01]

Make sure you have no subtrim on the rudder channel for HH mode, or it will definitely drift. Also, disable revo mixing or any other mixing of the rudder channel.

Perhaps if you could post some pics of the heli- specifically of the tail and of the tail servo, we might see a detail you've missed.

[wetwolf]

here are some pix. I have everything that is throttle-rudder related set to zero.

[dwelch]

For starters, are the tail blades on backwards? Mine are opposite as yours, and rotate counter clockwise into the main rotor wash.

David

[Fred Bronk]

Just to go over a basic thing or 2.

Are you adjusting the trim after setting up the gyro. If you change trim, the gyro will have to be reset.

Are you changing flight modes, like idle up? Are the subtrims AND trims all the same? If not, it will not hold and you have to reset.

Be sure the switch is correct for the gyro. THE GYRO SWITCH ON THE ECLIPSE DOES NOT WORK WITH THE 401 GYRO. I know that for sure.

Also, be sure the RX is set for the correct channel (not frequency). The channels can be set on the Berg RX to any channel and order.

FB