Do I need a governor???

[mewsikman]

Hey guys,
Iv just been out flying, just making use of the good weather after 3 weeks of rain and high winds...

But as some of you guys know I had some problems with my gyro not locking on in HH it would drift off to the left, and after having a new gyro and servo ( gy 401 and 9254 ) I thought it had done the trick..... But it started to do it again and the only thing that I can now think it could be is because I don't have a governor...

Could this be a reason that it doesn't like to HH....

[rototiller]

No, Gov has nothing to tdo with the tail. Other than if its not setup right you get a wag. A gov will not keep your tail from drifting.

You dont need a Gov untill your throwing the heli around from inverted to upright. It really makes the head speed consistint so your controls are the same.

DK

[stenkilde]

Maybe your gyro is in rate-mode?

[mewsikman]

Originally Posted by rototiller

You dont need a Gov untill your throwing the heli around from inverted to upright. It really makes the head speed consistint so your controls are the same.

DK

Im only thinking that because maybe the rmp is not consistant, also its not a wag its a slow yaw to the left .....

Is the atg just as good as the gv-1???

[mewsikman]

Originally Posted by stenkilde

Maybe your gyro is in rate-mode?

Lol for some reason it holds better in rate mode then HH.... No joke I can do a full pitch punch and that tail stays solid in rate mode

[rototiller]

Originally Posted by mewsikman

Im only thinking that because maybe the rmp is not consistant, also its not a wag its a slow yaw to the left .....

Is the atg just as good as the gv-1???

I havnt tried the GV1 but am happy with my ATG. Easy to setup keeps everything under control.

DK

[jstiltner]

Could you possibly have the numbers for rate mode and heading hold mode mixed up in your radio? or possibly you were mistaken about which numbers you thought set HH and rate mode?

[mewsikman]

Originally Posted by jstiltner

Could you possibly have the numbers for rate mode and heading hold mode mixed up in your radio? or possibly you were mistaken about which numbers you thought set HH and rate mode?

I wish that was the problem but its not....

I have set my gear switch on my Dx7 to change between HH and rate, so switch up HH mode red light on gyro is solid on and switch down rate mode the red light is off..

I have read that if you don't run a governor on the heli, the varying rmp's will affect the gyro HH capabilities

[Tom Burgess]

Originally Posted by mewsikman

I have read that if you don't run a governor on the heli, the varying rmp's will affect the gyro HH capabilities

That makes sense to me, a low headspeed will decrease the tail authority. A governor not only controls headspeed but tailsspeed also!

Its a long shot but try reversing your gear channel. It may just make your gear switch work the other way round but in my opinion its worth a shot.


Tom

[mewsikman]

Good shout.... I will try that straight after dinner

[mewsikman]

Just to check.... When setting up a 401 you need the tail pitch slider to be flight neutral and not slider neutral

[Tom Burgess]

slider neutral in rate mode, this gives you the best chance of getting the throws equal when you limit them. dont need to use endpoints that way.

if you fly in rate mode at all though you could do it flight neutral. little more complex setup though.

Tom

[mewsikman]

Sorry but im really lost with what you have just typed... It’s most likely me, but could you explain that in idiot terms

[Tom Burgess]

its probably me heavy night last night

with the 401 you have to use the extent pot on the gyro to set the throw limits. this pot changes the limits in either direction. therefore it is reccomended to set the mechanical linkages of the tail slider to slider neutral, (so the slider needs to move the same amount of travel in each direction to get full deflection in both directions). you will end up setting it around the cente of the tail shaft.

what your after is the smallest decrease of the extent pot on your 401 that gives full movement in either direction without binding and with endpoints of 100 100 on your radio. then you can switch to HH mode once setup in rate mode.

Thanks

Tom

[mewsikman]

lol Im still convinced its me..... Ok Iv checked out everything and its just like finless and mercuriell set up guides....

But I noticed something very wierd.... Ok right, I was standing on the right side the heli with the nose pointing to my right... I simulated the yawing effect of the nose of the heli to the left by pulling the tail very slowly towards me..... Nothing not even a twitch from the servo.... So I did the same but simulated the nose yawing to the right by pushing the tail very slowly away from me..... Picked it up straight away I didnt do it any faster or jerked it, just a smooth very slow push on the tail away from me....

So I stopped then pulled the tail back towards me again to see if it would sense it.... Nothing

This time I pushed the tail away from me so slowly that I didnt think it would pick up the movement, straight away I could hear the servo moving the tail blades

Is this normal or is there something really wrong with my setup / gyro???

[Tom Burgess]

Thats really strange. so it doesnt work on the ground but does if you lift it? im starting to think that maybe there is something wrong with the gyro and for some reason it is sensing movement around the roll or pitch axis and not the normal axis. where is the 401 mounted?

Tom

[mewsikman]

ahhh sorry forgot to say that it was on the bench

[mewsikman]

the gyro is mounted just above the tail boom on the black plastic

[rototiller]

If it only acts in one direction on the bench it will only correct in one direction in the air. That would be why it drifts. Check your servo to see if it goes in both directions. If it does then its your gyro.

A buddy got a cheap HH gyro and it would only work in one direction. Futuba has a really good return program. See if you can borrow a gyro from a buddy or somthing. Starting to sound like that is whats wrong.

DK

[mewsikman]

Damm it.... Its a brand new gyro I had the previous one replace because the nose was constantly drifting to the left

Are there any settings that might effect this???