What are your link lengths from servos to swash on 6HV FBL?

[belcom]

The manual is for flybar version and the build videos here are also for flybar version. I am using the supplied JR type servo arms at 20mm with hyperion servos. Wanted to know your link lengths are for Pitch, Aileron and Elevator servos for even travel up and down with maximum travel.

Perhaps someone can tell me if I should limit the deflection as well since I can program these servos. Default is set to 50 degrees.

[ping]

It's going to be different on every heli it's best to set up the whole head. It's really easy, set all sticks to center or enter setup mode in your flybarless controller. Set all servo arms to center. Then set swash height with the included tool. Finally confirm you have 0 pitch at the grips.

Do not limit your servo travel at the servo it needs to be done per the flybarless controllers instructions. For v-bar it is handled in the software by the cyclic ring.

[belcom]

I do have the supplied swash tool but I don't yet have the BeastX fbl unit. I am just trying to get the links right. What confuses me a bit is the elevator servo. Because it is mounted at an angle in the frame I am not sure where the arm is supposed to be at midstick... :confused:
Is it supposed to be horizontal to the servo case? Or is it supposed to be level just like pitch and aileron links?

Because when I tried the suggested link lengths as per manual it seems the swash is level only when the arm is horizontal to the servo case. But if I wanted to level it as the rest the link length needs to be quite a bit longer than suggested 44.5mm

I do understand that it's different on every build but I need some reference numbers here since none are mentioned in the manual. :thinking

[ping]

All the arms are 90 degrees to the main shaft. The elevator arm will certainly be angled in relation to the body of the servo.

Measuring mine (from center of the ball links) I have 40mm and 60mm on the front servos and 55mm on the elevator. Using Align servos and 19mm horns.

[alexmit]

All the arms are 90 degrees to the main shaft. The elevator arm will certainly be angled in relation to the body of the servo.

Measuring mine (from center of the ball links) I have 40mm and 60mm on the front servos and 55mm on the elevator. Using Align servos and 19mm horns.

I think you mean to say that the elevator arm should be at 90 degrees to the linkage, which sets it horizontal to the frame, not angled. if it is angled with the servo body, it will most certainly hit against the swash anti-rotation guide. It would also introduce interaction if it was angled parallel to the servo body.

Edit: I reread your post and it sounds like that is what you are saying since you state 90 degrees to the main shaft on the servo horns. :-)

[belcom]

Hey Guys, are those thick tube links from swash to grips adjustable?

[ping]

Yep it's a normal link inside. Takes a lot of force to get that first turn from the factory.

[Eric Brandenburg]

+1, the links on the end of the delrin rod are extremely tight out of the package. I used some ball link pliers to turn mine to get some extra leverage without worrying about breaking anything.

[belcom]

Thanks guys, I got them to turn no problem. Now I have to figure out what's binding in the top part of that derlin link. One side seems very smooth and the other binds. The FBL head diagram shows a small washer/spacer between the grip and link. I see there are 4 of them included in one of the accessory parts bags. I will try it.

[feudallordcult]

hi all, greetings. Could anyone pls share the link measurements for the Flybar 6hv? I am having some issues with getting enough pitch after I changed the ball links. I am getting a ridiculous +15 and -8 degrees. Read through the manual several times but the more I refer to it, the more I wanna shed it to bits.

Thanks in advance for advice rendered. Cheers!

[belcom]

did you center the servos at midstick using the supplied swash level tool? if so then you should be getting approximately the same amount of pitch both ways. The other thing is to use linear pitch curve when setting up. Perhaps your pitch curve is something like 42-46-50-75-100 in normal mode and that's why you are seeing uneven pitch.

[sarpilot]

I do have the supplied swash tool but I don't yet have the BeastX fbl unit. I am just trying to get the links right. What confuses me a bit is the elevator servo. Because it is mounted at an angle in the frame I am not sure where the arm is supposed to be at midstick... :confused:
Is it supposed to be horizontal to the servo case? Or is it supposed to be level just like pitch and aileron links?

Because when I tried the suggested link lengths as per manual it seems the swash is level only when the arm is horizontal to the servo case. But if I wanted to level it as the rest the link length needs to be quite a bit longer than suggested 44.5mm

I do understand that it's different on every build but I need some reference numbers here since none are mentioned in the manual. :thinking

As ping said all the arms need to be 90 to the main shaft so the elevator will look a little funny. It is pointless to set your servos up without the BeastX as all servo centering is done through it with 0 subtrim in your radio. If you do it in the radio you just have to do it all over again with the BeastX unit... (ask me how I know.... ;) )

[feudallordcult]

Hiya Belcom, I would set my pitch curve to 0-50-50-50-100 then setup for 0 at midstick. The problem now is when I go full negative and ALE to the left, the servo horn would almost strike the gear. But without doing this, I cannot achieve max pitch of -11. Btw, I use the leveller for the rex600 on the 6hv. I would rest the "legs" of the leveller on the ball links and try to eyeball to the best of my ability. Works well so far. This is becoming very challenging.

[belcom]

You need to use the supplied plastic spacers on the left aileron servo to bring it out a little to ensure it clears the gear. And that pitch curve you mention sounds more like a throttle curve to me. A common pitch curve in normal mode usually looks like 42-46-50-75-100 and in idle 1 and 2 it should be linear 0-25-50-75-100. That is if you have 5-point curves.

[Larry227]

I think he's using a 00-50-50-50-100 pitch curve specifically for setting up. With that curve you don't have to worry about being exactly at midstick when you set 0* pitch and you still have 0/100 for low/high leveling.

So the 6HV FBL kit comes with a swash level tool?

[feudallordcult]

I think he's using a 00-50-50-50-100 pitch curve specifically for setting up. With that curve you don't have to worry about being exactly at midstick when you set 0* pitch and you still have 0/100 for low/high leveling.

So the 6HV FBL kit comes with a swash level tool?

hi Larry, you are rite that I am using the 0-50-100 just for setting up. I normally use 40-inh-50-inh-95 for my pitch during normal flight but at 50, I would flip to IU which is 0-inh-50-inh-100.

[belcom]

So the 6HV FBL kit comes with a swash level tool?

It does but it's only good for leveling at 0 pitch to get the links right. Can't be used to level at max negative or positive.