Roller Coaster Design Project Group C Seth Kennard

Presentation Overview v Description of Brainstorming Ideas v Description and Analysis of Initial Paper

Brainstorming � � Drew pictures of possible roller coaster designs Choose to include following

Initial Paper Design � � First feature: Downward slope, vertical loop Next: Figure 8

Analysis of Initial Paper Design � � � Did not do full drawing of

Revisions to Initial Design � � � Figure 8 Changes in direction Bump Changed

Downward slope into vertical loop � � Downward slope maximizing speed Vertical loop first

Figure 8 (single up/single down) and Straight Away � � � Single up first

Double Down and Direction Change � � Double down to get ball to final

Performance during Final Test � Three perfect runs in a row � Speed Sensors

Major Problems and Solutions � Vertical loop not consistent � Charlie added a snap-fit

Summary � � � Learned that building a roller coaster is harder then it

Slides: 16

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Roller Coaster Design Project Group C Seth Kennard David Nace Brad Morton Charlie Goettler

Presentation Overview v Description of Brainstorming Ideas v Description and Analysis of Initial Paper Design v Revisions and Description of Final Design v Discussion of Major Design Problems and Solutions v Performance Analysis of Final System Test

Brainstorming � � Drew pictures of possible roller coaster designs Choose to include following features � Vertical loop � Figure 8 double up � Double down � Straight � 2 changes of direction � Bump Main focus was getting as many points as possible �

Initial Paper Design � � First feature: Downward slope, vertical loop Next: Figure 8 double up, change of direction, straight away Next: Double Down, change of direction, straight away, change in direction Final feature: Bump, small straight away

Analysis of Initial Paper Design � � � Did not do full drawing of front view of coaster Did not use proper dimensioning rules Did not factor in angle of bank in track Did not tell where the track went the longest without support The design was way too ambitious and was not possible for us to build

Revisions to Initial Design � � � Figure 8 Changes in direction Bump Changed dimensions Frustration

Description of Final Design

Downward slope into vertical loop � � Downward slope maximizing speed Vertical loop first because of speed needed

Figure 8 (single up/single down) and Straight Away � � � Single up first because of speed needed to reach peak Single down to gain speed Straight away to gain space for next feature

Double Down and Direction Change � � Double down to get ball to final height Change in direction to keep the track on the table.

Bump � Bump because it was required.

Catch Bin

Performance during Final Test � Three perfect runs in a row � Speed Sensors negative velocity

Major Problems and Solutions � Vertical loop not consistent � Charlie added a snap-fit and have Brad tweak when broken � Figure 8 Double up � Change � Straight Away � Change � angle of snap-fit until it works Track too loose or too tight � Pull � the second up to a down track until it’s just right Angle of track � Changed angle of track until the ball stays on

Summary � � � Learned that building a roller coaster is harder then it looks. Calculations before build ended up being pointless. Got real-world experience in building a smallscale model. Stay organized. Elect a supervisor. Got third place in the class