A6: Team RallyeA6: Team RallyePotable Water StillPotable Water Still

Presented by:Presented by:

Tim RodtsTim Rodts

October 26, October 26, 20062006

Nicole Del Rey Mike McConnell Tim Rodts Eric Sabelhaus

Design StatusDesign Status

PowerPower Pedals Pedals Gears Gears Generator Generator

Heat SourceHeat Source Ceramic bowl with embedded wire Ceramic bowl with embedded wire

heats sand; in turn heats container.heats sand; in turn heats container. Polluted water container Polluted water container

Beaker Beaker IntelligenceIntelligence

Temperature Sensor with DisplayTemperature Sensor with DisplayWebsiteWebsite

Design StatusDesign Status

‘‘Inspired’ by ASME guidelinesInspired’ by ASME guidelines Currently ahead of schedule as far as starting Currently ahead of schedule as far as starting

to build prototypeto build prototype Cannot program microcontroller without Cannot program microcontroller without

temperature sensortemperature sensor

SHOWSTOPPER: SHOWSTOPPER: Designing/purchasing shaft coupler that Designing/purchasing shaft coupler that

will accommodate metric generator shaft.will accommodate metric generator shaft. Packaging of all components.Packaging of all components.

Semester OutlookSemester Outlook

Assignments Prototype Other

19-Sep Trade study proposals submitted Website createdConcept memo submitted

26-Sep Preliminary cost estimation Determine intelligence functionsOrder nichrome wire

3-Oct Order generatorOrder polymerOrder sensorsOrder structural material

10-Oct Trade studies completed Order air pumpOrder pressure valvesProgram microcontroller

17-Oct24-Oct Manufacture polymer Initial CAD Assembly developed

Test heat sourceTest air pump

31-Oct Build structureTest pressure valves

7-Nov Assemble electronics, sensors, valves14-Nov Install components

Test fully operating prototype16-Nov Draft design doc. completed21-Nov Prototype demonstration28-Nov Concept design review5-Dec Design documentation due

!!

In the works

Action Items Action Items from from

Week 8 (10/10)Week 8 (10/10)

-1--1- There will be no sealant on the ceramic bowl.There will be no sealant on the ceramic bowl.

Sand will be placed in bowl. A beaker will sit in Sand will be placed in bowl. A beaker will sit in the sand.the sand.

-2--2-

Condenser connection Condenser connection to polluted water to polluted water container now container now simplified.simplified.

Rubber stopper with a Rubber stopper with a direction connection to direction connection to the polluted water the polluted water container.container.

-3--3-

Front post now Front post now designed to pivot.designed to pivot.

Rear connections Rear connections permanent.permanent.

Will optimize Will optimize rider comfort.rider comfort.

Avoids pre-Avoids pre-stressesstresses

on base.on base.

Pivot joint

Action Items Action Items for for

Week 10 Week 10 (10/31)(10/31)

-1--1- Order bearings for sprocket shaft. Order bearings for sprocket shaft.

8 mm shaft diameter8 mm shaft diameter 39 mm hole-to-hole length.39 mm hole-to-hole length.

Above dimensions are have been chosen to fit safely within Above dimensions are have been chosen to fit safely within ring of screws necessary to mount sprocket.ring of screws necessary to mount sprocket.

Part #: 1434K33Part #: 1434K33 Price: $8.11 eachPrice: $8.11 each

-2--2-

Design/order shaft couplerDesign/order shaft coupler Needs to couple 2 shafts, 8 mm in diameter.Needs to couple 2 shafts, 8 mm in diameter. Needs to transmit 100% of 26 N-m of torque.Needs to transmit 100% of 26 N-m of torque.

Clamping coupler vs. set-screw coupler.Clamping coupler vs. set-screw coupler.

-3--3-

Continue building CAD models of all Continue building CAD models of all individual parts.individual parts.

Create assembly.Create assembly. Will allow us to troubleshoot space and Will allow us to troubleshoot space and

packaging issues not currently visible.packaging issues not currently visible.

Questions?Questions?