Prosthetic Arm Force Reducer Team 1 – Halliday's ... - Ohio University

7.2.4 Collars
1) Using lathe turn overall length from .25 to .22
7.2.5 Assembly
1) Drill cable exit hole on right hand side (looking from the top of the arm) ¾ inch from the
front of the arm using a ½ in bit
2) Place front ring in forearm chamfer side first
3) Ensure that the mounting holes are at 0, 90, 180, and 270 degrees relative to arm.
4) Using a flash light mark were mounting holes shine though
5) Remove ring and drill holes with 3/8 inch bit
6) Bolt two tracks (vertically) with the nuts and other mounting holes inside the arm on the
front ring
7) Place back ring inside of arm and line holes so that they at 0, 90, 180, and 270 degrees.
Also ensure that the tracks are square.
8) Using flash light as before mark mounting holes
9) Drill mounting holes with 3/8 inch bit.
Fig 7.2.4 - Forearm Assembly
10) Attach bolts on the two mounting holes only.
11) Place the collar then the pulley then the other collar on axle.
12) Ensure everything is square and tighten down collars using allen wrench on set screw.
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