Last question, honest, well for a bit :-) Gyros !!!!

[gasgasbones]

Right ho, thanks for all the help with the cyclic set up, its now working fine after some fine tuning
Ive got + and - about 11 dgs so should be fine there and there is nothing binding at full throw, yeah !!

Ive just had the beast out in the garden for a sin up, lift is defo not going to be a prob but as it started to leave the ground.. you know whats coming ;-) its started to spin and i couldnt "fix" it with the stick inputs.

I think my gyro isnt set up correctly, can you please give me some clues as to what to do. Ive have read the destructions but any laymans info would be appreciated .

I have a DX6i tranny..what settings do i need to input into this ?
and the gyro is a gy401

At the mo the gain is turned all the way down.
delay is at about 75 % whatever the hell that does
and the DS is on ??

Once again thanks chaps.

[callum]

DS is Digital Servo, -- Only use that if you have a digital servo. using the option on with an anaglog servo you will fry it.

Have you made sure that there is a couple of degrees pitch on the tail blades at center stick? if not. it may cause it to spin out of control, each gyro has diffrent requirments for tail blade pitch.

You will want to turn the Gyro gain up,. this is the sesitivity of the Gyro, the higher the more it compensates, the lower the less it compensates, so have it just after halfway. also having too much gain will cause the tail to wag (like my video i will upload in abit of me flying) if so, just lower the gain a little

you want to get the maximum gain you can without tail wag

Hope this helps a little,

Try with gain on, and get back to see if it stops the spinning.

[Tmac]

If the servo is operating in the correct direction sounds like gyro sense may be reversed

[callum]

Ahhh^^

Forgot the mention that

[gasgasbones]

If the servo is operating in the correct direction sounds like gyro sense may be reversed

Ooooh dont know, how would i check ? I presume i can switch the "rotation" that the gyro senses ?

when i apply the rudder it is turning the heli the right way ( just not enough ) so i think thats fine. I will turn up the gain to midway.

As for the servo it is digital :-)

Right ho, so i need to

leave it on DS
Turn the gain up.
add a couple of degrees pitch to the blades.
and make sure the Gyro is sensing the right dirrection of rotation ?

Whats the delay Pot do?


Cheers again Chaps, much appreciated

Carl

[gasgasbones]

Think I might have sussed it, or should I say you lot have sussed it

I just did those couple of things and spooled it up in the living room ( the wifes out )

just a quick go and it seemed miles better, will give it a proper go in the morning all being well.


Thanks again

Carl

[callum]

Good Job

what you really want to do is flip the gyro into rate mode (no HH) and see if it stays on its course (until winds changes it)? if it starts spin/move round fairly quickly then add a few more degrees pitch to counter it, until it stays on its heading until starts to move into the wind then flip it back into HH and thats your tail pitch sorted

Then what i would do is mark the tail boom where the tail servo mount is, so if you need to take the boom and servo off you wont have to do this process again

[cjcj1949]

There's a bit of confusion caused by the terms sense and sensitivity.

Sensitivity is the amount of feedback the gyro uses to correct the tail. The more you use the quicker it will be until it gives so much that it overshoots. That is tail wagging. You don't need to have it set as close to wagging as possible for just hovering. The sensitivity is also called gain. If you set this to halfway you get no gyro action. More than halfway and you get increasing heading hold and below you get increasing rate mode
.
Gyro sense is a switch on the gyro which changes the direction of the feedback. If it's the wrong way it will make things worse rather than better. You can check this by looking at the way the tail rotor works. Spool up on a smooth surface and turn it with the tail. If you can turn it left or right without it spinning then the gyro sense is ok.

The delay setting is to compensate for slow servos. The worse the servo the greater the delay you set.

Chris

[cjcj1949]

I've noticed you have a blade 400. The standard servos are digital but they can't handle digital input. That's the enerG 7.5g ones.

Chris