Human Powered Blender

Team Pink Elephant: Michelle Aldrete, Adam Clark, Danielle Salamoni, and Garett Sietz

(team picture)

Photo Credit: Christopher Alston

IntroductionThe objective for this project is to design a human powered blender for children

Kindergarten through 12th grade.

http://www.blurb.com/bookstore/detail/723627

Introduction ContinuedLaurel Tree Charter School does not have a human powered blender

Laurel Tree Charter School has a human powered blander.

Specifications:• Size options• Evident Education

Value• User Guide

Considerations:• Vandalism• Mobility• Usability• Replaceable Parts• Versatility

CriteriaSafety 10

Usability 9

Repair and Maintainability 9

Durability 8

Effectiveness 7

Level of Educational Value 4

Cost 3

*Criteria were assigned a weight value of least important to most important on a scale from 0-10

Final DesignStorage for Battery, Inverter, and Blender24V DC Motor

Steel Hub

Wheel

Bench

PedalsPhoto Credit: Adam Clark

Photo Credit: Garett Sietz

CostMaintenance Cost

Material Cost

Task Frequency Task Time Cost TimeBelt Change Approximately every 5 years 30 minutes 50.00 5 YearsCleaning Blender Before putting the blender away 15 minutes 0.00 Variable depending on usage Changing Wood As needed Variable Variable Variable Battery Replacement As needed 15 minutes 30.00 3-5 Years

Item QTY Cost for Pink Elephants Retail CostPlywood (5ft by 5ft) 1 Donated 22.512 by 4 (Various Lengths) 7 Donated 5.00Bicycle Wheel 1 Donated 35.00Bicycle Chains 4 Donated 39.8836V DC Motor 1 50.00 100.0012V Battery 1 35.47 35.47Belt 1 31.07 31.07Steel Bearings (3/8 in) 2 23.59 23.59Plywood (8ft by 6ft) 1 22.51 22.51Multimeter 1 9.97 9.97Waterseal (12 Oz) 2 8.63 8.63Blocking Diode 1 7.49 7.49Jumper Cables 1 7.49 7.494 by 4 (6ft) 2 6.50 6.50Rim Tape (Roll) 1 5.39 5.392" Stainless Steel Screws 30 5.10 5.102 by 4 (8 ft) 1 5.00 5.00Battery/Alternator Testor 1 4.99 4.99Corner Brace (1 1/2 in) 1 3.99 3.993" Stainless Steel Screws 20 3.80 3.80Steel Rod (1/2 in, 3ft) 1 2.97 2.97Sandpaper (Packs) 1 1.50 1.50Total 235.46 387.85

Summary and Conclusion

• To completely discharge the battery, the blender must be run for approximately 2 hours

• To completely recharge the battery, the device must be operated for approximately 12 hours