No more than 5.0° cyclic on the blade of my stratus?

[DanielB]

i have the normal head with the kit 1026-1. my horn all 90°. i adjust my push rods to the swash plate, like in the manual. with my stick in center position, i get 0° pitch on the blades. i set my pitch afr to 50%, so i have +10° and -10° on the blades.
i watch to the rotorhead, during too much roll and nick inputs together (swash afr over 45%). i saw, that the lower ball head of the push rod to the paddels touches the middel part of the pitch compensator, so i get tension in the head. when i adjust my roll and nick afr, that i have no contact with the ball head of the push rod to the middel part of the pitch compensator, i have only 5.0° cyclic pitch on the blade for roll and nick to each side.
is the cyclic pitch enought or not for acrobatic, not for heavy 3d flights?
hoe are youre cyclic pitch for roll and nick with the normal head, without modification?

here some photos:
http://www.danielbaumgarten.de/1.jpg
http://www.danielbaumgarten.de/2.jpg
http://www.danielbaumgarten.de/3.jpg
http://www.danielbaumgarten.de/4.jpg
http://www.danielbaumgarten.de/5.jpg

[DavidH]

Every thing in the pictures appears fine to me.

How are you measuring the amount of cyclic?

Left and right ( Aileron) cyclic will be measured with the blades positioned paraelle (inline) with the tail boom.

Fore and aft ( Elevator) cyclic will be measured with the blades positioned 90 degs to the tail boom

You would need to lock the flybar to get a correct reading.


David

[DanielB]

yes, i measure the cyclic pitch like you wrote.
you can see on the photos, when i set the swash afr for roll and nick more than 45% the grey ball link, from the rod to the paddles, touches the middel part of the pitch compensator and the opposite ball link touches the pin from the central part of the rotorhead.

[EricLarson]

ok, there is a lot of stuff here...

*First at the servo's use horns that allow about 19.5 mm from center to the control ball.

* Set all servo wheels to centered 90 degrees

* adjust control rod lengths so the bell cranks are 90 degrees

*adjust the links from the belcranks to the swashplate to 60mm ball link center to ball link center

* adjust washout links that attach to the flybar carrier so the washout is level

* adjust both links on the bell mixers ( on the blade grips ) so the bell mixers are level and the blade grips are level all 0 degrees.

You should now be set 0 degrees, 90 degree setup after doing that all in order.

On Futaba up to 65% will be close on the swash settings. If everything is level after you adjust the links to the swashplate then you should be able to get normal throws without binding. Always measure pitch angles with the flybar level and the #'s on every brand of pitch gauge are different. Stock out of the box you should get 6.5-7 degrees no problem with 11 degrees of blade deflection and no binding.

[DanielB]

thanks mr. larson. i checked the steps out and here are my adjustment:

1. i use futaba servos s9252 with the big black servo horn. the distance is 19,5 mm

2. all servo wheels have 90°

3. the bell cranks have 90°

4. the links have 60 mm from ball link center to ball link center

5. the wash out is leveled

6. the bell mixer are leveled to

all the parts you counter are leveled, when the stick is in the center position or better, i use the neutraltest from my t-14, but i have binding, that you can see on the photos.

[megotroulette]

maybe try with your flybar carrier have the 2 holes on the outter sides of the flybar carrier, try it in the outter hole?.. that might help the links to clear the head block... maybe those two flybar control arms that go to the centre of the flybar carrier are two small.. and when you are putting in more travel in your radio they are hitting the head block because they aren't long enough?..

Good luck

[EricLarson]

I really have no idea where the issue could be. On my 14MZ with the mechanical settings you describe I have 6.5 degrees flybar deflection and with .020 shim under the inner swashplate balls on the blade cyclic side I am getting about 8.5 degrees of blade cyclic deflection. This all is with no binding at all. I am using the outside holes on the flybar carrier, but the inside you have there is more pitch deflection.

From the pictures I would say that you are maxing out the flybar deflection. That is more like 7.5 degrees or more of paddle deflection. Also in the picture you blade grips look like they are pitched at about 15 degrees or so. That may be because they are pictures and they just give the wrong impression.

Something has to be up though as this is the same head setup we have used on the X-cell models for years. The only change is the flybar carrier and there are so many out there now that I know they are working well. I am sorry this is not a whole lot of help, but I am at a bit of a loss for figureing out where the issue may be.

I do know this to be true. If you are setups as you describe above and you are binding, you are getting a LOT more than 5.0 degrees of cyclic with 10 degrees of blade pitch. Your pitch gauge may be lying to you :) Nothing should bind or hit.

[DanielB]

hi,

i have 10° pitch. i will try with the outer hole of the flybar carrier and i will see.

[DanielB]

i try it on the outer hoel of the flybar carrier. it's not better. yet i see, that the grey ball link of the flybar touches the inner black ring of the swash plate.
i think, there is no chance to get more cyclic pitch at roll and nick, without binding.
i will see, how the stratus flies with the 5° cyclic.

[EricLarson]

I would highly suspect your pitch gauge in very inaccurate. If you are binding, there is no way you are only at 5 degrees of cyclic unless something is majorly wrong in the mechanical setup.

[kthane]

Any chance you're attempting to check for binding by cornering the cyclic stick? A flybar lock is just about mandatory.

[megotroulette]

how do you check just the paddle deflection?... do you put the blades 90 degrees to the body and check the elevator cyclic that way and move it back to inline with the body to check aileron cyclic?

Cheers,

[freddyferris]

"4. the links have 60 mm from ball link center to ball link center"

isnt it 60mm pf the rod that are Visible?! and not midle of hole to midle of hole?!

Fred

[ChrisLaFollette]

By looking at the pics it looks like its got around 15° or more of pitch. I know way more than 5. Your pitch gauge is lying to you ill betcha. Fly it and see how it flies.

[DanielB]

hi,

today i fly the stratus. i think the 5° aileron and elevator in each direction is enought for me. he is really agil, i think, like the raptor 50. :roll:

[EricLarson]

If it flies like a Raptor .50 something is really wrong....

[DanielB]

hi,

i write, that the stratus is agil, like the raptor 50 with 20gr paddles, not that he flies like the raptor 50. the stratus is very good to fly. the flies fantastic. all the commandinputs are does the heli very exactly. it is a wonderful heli.

[Alfred]

Versuche die V2 Haupt bleatter.
Welschen Motor hast du drin? Den YS oder der OS 90?

[Peter]

Hope you're not swearing there ,Alfred !!!
Hope to catch up at Coffs in a few weeks !!!

Gotta just love the Stratus .......

[Alfred]

Nope, I wasn't swearing.
Althought my German is starting to get a bit rusty after 25 years.
Coffs Harbour is still on in May 20-21?
I am going to drag my sorry ass up there. the only time I get some real flying in is in Coffs Harbour.
Wish they get rid of the rule where the observer has to be an affliliated member as I don't seem to get much flying in. I could use my wife as an observer but we hardly are going to pay all the Dollars just for one or 2 events.
Looking forward to have a peak at your Stratus, I haven't seen one for real yet.