Rate mode, gyro setup s and tail shafts.

[machasm]

I have always been told to setup my tails using rate mode for best performance.
the problem I have with this is that the tail pitch slider is in the middle of the shaft when at 0 degrees pitch so that when the end points are adjusted then there is pretty much an equal throw from full right to full left.
if I adjust for about 8 deg pitch to attain a hands free hover in rate mode then the throws are unequal from one end point to the other and I am not sure the gyro/fbl unit is happy with this scenario either.
i am sure this topic has come up before but just wanted to see what others are doing these days with all the newer gear?
Better still would be to have an output shaft that was in the middle when at 8 degrees pitch.
so do you setup for 0 degrees pitch with equal throws or 8 degrees with unequal throws?

[Ruston]

Surely it is the rate of rotation you want to be consistent left to right? Given that you are fighting main rotor torque in one direction and are helped by in the other, a non-centred pitch slider is the way to go.

[waveydavey]

Unless I have issues with unequal stops then I leave it setup on the middle. If the stops aren't the same then I adjust the tail rod so that they are, or as good as I can. The BeastX is particularly fussy when it comes to this sort of thing.

So, set your piro rate so its the same both ways, equal out the stops as best you can and adjust the gain to stop any wagging. You will have to redo your end points each time you change the rod. Try this before adjusting anything like stop gains etc

[coolice]

Hey.

I mist admit I don't setup rate mode tail trim to hover hands off any more, unless the FBL/gyro dictates it which some do.

However to help counter your throw problem you can offset your tail servo control arm to the side which give the 3-4 degrees tail pitch to counteract the torque reaction. Then in flight should the gyro look for zero pitch on the tail the servo arm is then 90 degrees to the servo, this you should be better able to achieve matching travel limits this way.
.

[cjcj1949]

As far as the gyro is concerned it just thinks there's a side wind and it adjusts to counteract it. Just adjust so it flies the way you want. I changed the adjust on my 130-X to a rough rate mode setting as the servo was twitching. Still flew ok and twitched less. Switch cleaner cured the twitching, the servos need oil on the contacts.

[3dbasher]

I have always been told to setup my tails using rate mode for best performance.
the problem I have with this is that the tail pitch slider is in the middle of the shaft when at 0 degrees pitch so that when the end points are adjusted then there is pretty much an equal throw from full right to full left.
if I adjust for about 8 deg pitch to attain a hands free hover in rate mode then the throws are unequal from one end point to the other and I am not sure the gyro/fbl unit is happy with this scenario either.
i am sure this topic has come up before but just wanted to see what others are doing these days with all the newer gear?
Better still would be to have an output shaft that was in the middle when at 8 degrees pitch.
so do you setup for 0 degrees pitch with equal throws or 8 degrees with unequal throws?

I've found for best performance you need you 6-8 degrees of right(depending on rotation direction) in rate mode and equal endpoint's some times you need to offset the servo arm to achieve it.
Align 600 and 700's pre DFC tail(not sure now?) its was easy, all you need to do is center the slider on the shaft in rate mode,that gives you equal travel and the right pitch offset is built in between the slider yoke and tail grips...all done for you!
On other models including my outrages the tail geometry isn't great the total tail pitch range is plenty but when centered you either get 0 or left....not good lol.
Some models you can flip the tail grips to sort it others your stuffed with out machining bits.

[ModelGuard.Com]

Re: Rate mode, gyro setup s and tail shafts.

If your using a fbl controller then best to follow their instructions. I use skookum where it clearly says to set up with the servo at 90 degrees and the tail pitch at zero. The unit adds the 6-7 degrees itself.

[smokingtommy]

A lot of kits today when built have the geometry already set into the tail at 90° with the right pitch and to be honest its very rarely that you will use all the distance on the tail output shaft agree its best to get the same each side yet its not critical

[3dbasher]

I've found for best performance you need you 6-8 degrees of right(depending on rotation direction) in rate mode and equal endpoint's some times you need to offset the servo arm to achieve it.
Align 600 and 700's pre DFC tail(not sure now?) its was easy, all you need to do is center the slider on the shaft in rate mode,that gives you equal travel and the right pitch offset is built in between the slider yoke and tail grips...all done for you!
On other models including my outrages the tail geometry isn't great the total tail pitch range is plenty but when centered you either get 0 or left....not good lol.
Some models you can flip the tail grips to sort it others your stuffed with out machining bits.

probably should of added that this is for a conventional gyro...fbl units vary like modelguard said best to follow the instructions as some have built in precomp/revo mix