Sunday, October 5, 2014

Table of Specifications

Below are the specifications and critical dimensions for our Yo-Yo Design!

Specification
Target Numerical Value
Expected Tolerance
How to Measure
Max Diameter
2.42 in.
+/- 0.01 in.
Use calipers
String Gap
0.1 in.
+/- 0.02 in.
Use calipers
Total Mass


Use mass scale
Max Rotational Speed
4000 rpm
+/- 1500 rpm
Use strobe light tachometer and/or high speed camera
Thickness (through axel)
1.63 in.
+/- 0.04 in.
Use calipers
Diameter of Spinner (Washer inside)
0.34 in.
+/- 0.01 in.
Use calipers
Diameter of Spinner Length (end to end)
1.47 in.
+/- 0.01 in.
Use calipers
Diameter of Earth Cap Piece
0.80 in.
+/- 0.01 in.
Use calipers
Diameter of Post (attachment between Earth and Base)
0.290 in.
+/- 0.01 in.
Use calipers
Depth of Detailing on Earth Cap Piece
0.039 in.
+/- 0.01 in.
Use depth gauge
Distance between Spinner Washer and Base Shaft
0.02 in.
+/- 0.02 in.
Use calipers

*300 micron = 0.0118 in. tolerance estimated using assumptions of tolerances due to injection molding and mold fabrication

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