This page provides information on crashing and my crashes.

My Crashes



Re-Calibrating the Helicopter After Its Been Repaired

During the process of repairing the helicopter, you usually have to take things apart. Now that the helicopter is back together, you have to verify the that the servos and linkage arms are all correct. Plus verify the radio settings. Here are the steps I’ve followed:

  1. On the Futuba 7C radio, reset the following values in your radio to the default values:
    1. set E.POINT to 100% throw.
    2. set SUB-TRIMs to +/- 0.
    3. set SWASH to +50%
    4. set throttle and pitch curves to linear:
      1. THR-CRV to 100% / 75% / 50% / 25% / 0%
      2. PIT-CRV to 100% / 75% / 50% / 25% / 0%
  2. Get all three servos working in the right direction. See step 35.
    1. adjust REVERSE if needed to get servos moving in same direction when pushing the left stick.
    2. adjust SWASH to tilt left & right when pushing the right stick.
  3. Get servo arms at 90 degrees. See step 36.
    1. put thumb sticks to mid-stick.
    2. adjust SUB-TRIM to get servo arms to 90 degree angle.
  4. Level the Swash plate.  See step 37.
    1. adjust either the linkage rods or SUB-TRIM.
  5. Do a feathering shaft test (see below) to see if its been damaged.
  6. Attach the head. See step 38.
  7. Adjust blade grips. See step 39.
    1. thumb-sticks to mid-stick.
    2. Adjust short linkage rods to get blades to be level with fly-bar. Use a pitch gauge.
  8. Adjust swash plate travel range. See step 40.
    1. Adjust the SWASH PITCH setting so the swash plate does not bind with the head.
  9. Redo the Throttle and Pitch Curves

 



Feathering Shaft Test

Feathering Shaft Test

During a crash, your blades may hit the ground.  With carbon fiber blade, the shock may travel up and damage the feathering shaft.

To test the feathering shaft:

  1. Remove one blade as shown in the photo above.
  2. Using a screwdriver, turn the screw.
  3. You should NOT see the other blade grip move.
  4. Another approach is to take the feathering shaft apart and roll it on a flat surface with a light shining behind it.  Look to see if its bent.