bhelisN6
Heliman
Location: Fremont, California
| Century's head button CN2215 (for plastic rotor head)
The head button has a reverse thread, aproximately 7.5mm in diameter. What I usually do to install the head button is to use an exacto knife and cut a slight chamfer into the hole in the top. Remove the landing gear. Start threading the head button using a screwdriver inserted into the hole and crank counter-clockwise. The button will sometimes start to thread in at an angle, but continue to crank applying alot of force downwards. Use the palm of your hand on top while turning. Once the button is almost down, the flat surface above the threads will contact the top of the rotor head block and the the button will straighten out. Continue to apply alot of force on the top while the button straightens out.
In some cases, if repeated tries have enlarged the hole and the button will not tighten, remove the button and apply JB Weld or Epoxy to secure it in place. Works everytime.
Century's rear rudder servo mount CN2216
Using this mount, there is no need to change the length of the rudder pushrod.
I actually like this design better than the boom mounted style. Remove the two lower M3x25 SHCS and attach the mount to the right side of the mechanics when viewed from the back of the helicopter. Insert the two longer bolts and secure with the original M3 locknuts on the outside of the new mount. Now attach the rudder servo inserted from under the tail boom, this will position the servo horn directly below the centerline of the tail boom. Remove the ball link from the short tail pushrod (this one is different from the normal pushrod, designed for 2mm pushrods) and attach to the end of the long rudder pushrod. Once installed you may need to flip the output of the servo to alighn the ball link to the ball on the servo horn.
Last thing to do is to reposition the tail pushrod guides to get the straightest shot to the tail pitch lever ( disconnnect from the rudder servo and slide the pushrod back and forth moving the guides until the smoothest operation is attained) and glue them in place.
Andrew |
Maybe not - I may just give up on that one.
