Team Fuzzy Balls presents: The Ball Stinger Waqas Abbasi Dusty Ashberry Daniel Grant Chadwick Harris Gene Karshenboym Robert Ricaud

Team Fuzzy Balls2

3 Overview Problem Statement Product Description and Functional Requirements Conceptual Designs Selection Analysis Engineering Analysis Prototype: Stage 1 Design Problems Modified Prototype Video Demonstration Completed Design Cost Analysis

Team Fuzzy Balls4 Problem Statement When a can of pressurized tennis balls is opened they begin to loose pressure after approximately 3 hrs of play Through non-pressurized storage the tennis balls will continue to loose internal pressure This loss of pressure greatly affects the performance of the tennis balls.

Team Fuzzy Balls5 Problem Statement Cont. Tennis coaches and avid players use a high volume of tennis balls on a daily basis. The cost to replace the balls due to pressure loss is a financial burden.

Team Fuzzy Balls6 Product Description and Functional Requirements A pressurized storage system used to maintain/replenish tennis balls to increase longevity and performance. Functional requirements/desires 1. SAFETY 2. Hold a pressure of 14 psi 3. Maximize capacity (minimum 150) 4. Easy to use 5. Does not hinder regular routine of user

Team Fuzzy Balls7 Conceptual Designs Sliding Lid, Buckle Top, and Cylinder Sliding Lid Buckle Top Cylinder

Team Fuzzy Balls8 Comparative Baseline Ball Charger

Team Fuzzy Balls9 Selection Analysis Criteria Weights CapacitySizeEaseSafetyPortabilityDummyTotal Capacity Size Ease Safety Portability Dummy

Team Fuzzy Balls10 Selection Analysis (Cont.) Design Analysis SizeCapacityEasePortabilitySafetyRawNorm. Sliding Lid Buckle Top Cylinder Ball Charger

Team Fuzzy Balls11 Engineering Analysis Deflection of Lid w/ Corner Supports:Deflection of Lid w/ 8 Supports:

Team Fuzzy Balls12 Engineering Analysis (Cont’d) Buckles: Total tensile strength must be greater than 600 lb. for N = 2 d= 1/8 in =.125 in F = 600 lbf Therefore, the yield strength of the material must be approx kpsi. Most low alloy steels have yield strengths greater than 50 kpsi.

Team Fuzzy Balls13 FEA data Polyethylene Max deflection: 93 inches ABS Plastic Max deflection: 1 inch

Team Fuzzy Balls14 Prototype: Stage 1

Team Fuzzy Balls15 Part Drawings: Container

Team Fuzzy Balls16 Prototype Lid

Team Fuzzy Balls17 Part Drawings: Lid

Team Fuzzy Balls18 Part Drawing: Gasket

Team Fuzzy Balls19 Wiring Schematics AC Power Pressure Switch ≥15 psi <15 psi Compressor Common Switch

Team Fuzzy Balls20 Design Problems Container Experienced Bulging Due to an inadequate container thickness and non-ideal box material Buckles would fail due to lid bending Replaced Air Compressor Air Compressor was inadequate because of 2- stroke design which could allow air to leak from container

Team Fuzzy Balls21 Solution to Design Problems Straps were placed to redistribute the forces that caused bulging Replace buckles with clamps An airbrush compressor replaced original tire compressor

Team Fuzzy Balls22 Modified Prototype Design Movie Page

Team Fuzzy Balls23 Final Design Criteria Container thickness changed to 3/8” ABS polycarbonate plastic 4 buckle latches will be used to secure the lid

Team Fuzzy Balls24 Cost Analysis Prototype Box: $78.00 Lid: $ Pump: $45.00 Fittings: $40.00 Sealant: $5.00 Handles/Latches: $30.00 Total: $ Design Box: $ Lid: $40.00 Pump: $10.00 Fittings: $15.00 Sealant: $1.00 Handles/Latches: $10.00 Total: $ These prices reflect mass unit production.

Team Fuzzy Balls25 Website Team Fuzzy Balls

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