Reinstalling servo wheels

[thehatguy]

Got a good deal on a 700 minus electronics.

Starting to add equipment now.

Not having any experience with push/pull linkages, I am at a loss
as to how I should position the servo wheels.

Dont know what to use as a reference to get equal movement.

Looked through the manual, but didn't see anything that was helpful.

Any help is appreciated.

John

[Gene T]

See those little triangular arms holding the ball link up to the swash? They are the thing that has to be at 90 degrees when your servo is at center. The way to establish 90 degrees is to draw a horizontal line from the hub that they rotate on, through the hole where the ball link is screwed into them. That line needs to be 90 degrees to your main shaft when at 50% pitch value (mid stick, zero degrees)

So power up and center the servos with the wheels off. Put your throttle to the 50% pitch point. Then line up the wheels to get the line as close to 90 as you can, then use subtrim to finish it off.

then do your swash leveling.

[terrabit]

Originally Posted by Gene T

See those little triangular arms holding the ball link up to the swash? They are the thing that has to be at 90 degrees when your servo is at center. The way to establish 90 degrees is to draw a horizontal line from the hub that they rotate on, through the hole where the ball link is screwed into them. That line needs to be 90 degrees to your main shaft when at 50% pitch value (mid stick, zero degrees)

So power up and center the servos with the wheels off. Put your throttle to the 50% pitch point. Then line up the wheels to get the line as close to 90 as you can, then use subtrim to finish it off.

then do your swash leveling.

Also, when your swash is level and centered, the bellcrank arm to swash link-balls should be centered to a reference slot cut into the cf frames. The same is true of the elevator link-balls. There's a hole that passes through both sides of the frame to use as a reference.

And, the servo horns should be 90° relative to the body of the servo. The push-pull linkrods should be of identicle length and should not bind when installed on to the output shaft of the servo.