2. Cut a small (10cm or so) length of 29mm cardboard motor mount tube to use as a liner
for your motors. Wrap it several times in tape(masking tape works well) until it fits snug
inside the 3d printed motor mount.
3. If you have one, insert a spent 29mm motor into the mount. The 3d printed part flexes
quite a bit without it, but can hold its structure well once a motor is inserted
6b. Inner gimbal
Next, let’s attach the inner gimbal to the motor mount.
1. Remove the large pieces of 3d printed support material. This should be fairly easy with a
pair of pliers. Use a smaller drill bit or long rod to remove the support material inside the
screw holes of the part.
2. Slide the inner gimbal over the motor tube. Make sure the star on the inner gimbal faces
the same direction that the pushrod points.
3. Screw into place using two of the M3.5 short
screws. It should be a tight fit.
4. Grab one of the included servos. Count 3 holes
from the attachment point of the servo horn,
and insert the bent end of pushrod.
Copyright © 2019 Barnard Propulsion Systems, LLC
Version 1.8, Jan 1, 2019
