ENG H191 Hands-on Lab
Lab 1: Marble Carrier
Purpose
The purpose of this lab is to design and build a mechanical machine that
delivers up to 10 marbles from a tabletop to a receiving target.
Lab Experience
The target is to be located on the floor. The machine and the marbles must
start behind a starting line marked on the table. However, the target may be
placed at any distance from the table as is appropriate for the design. Only
one start action (lever switch, push, etc.) to begin the delivery of the marbles
will be allowed. Also three runs will be allowed. The final score will be
based on the best performance of the three runs.
Set-Up
Illustration
Start Area
Inner Target (1 pt)
Table
Outer Target (1/2 pt)
1
Rules and
Guidelines
Timing

The teams are allowed to use only the parts from the erector set they
are provided with.

A maximum of 10 marbles is allowed per team.

The apparatus and the marbles must start behind the line marked on
the tabletop.

Only one start action is allowed to start the marble carrier.

The receiving target may be positioned on the floor before beginning
the runs.

The receiving target may be held in place manually.

The machine MUST be reusable.

No practice runs will be allowed on the test desk.

Any dimension or property of the test area should be measured by the
student.

Participation in RUN #1 requires a completed design.

Participation in RUN #3 requires participation in RUN #2.

Modifications (but not redesigns) are allowed between runs.

The best score from the three runs will be recorded as the final score.

Any other rules in accordance with the spirit of the contest will be
imposed.

The decision of the instructor is final.

Design and Construct:
RUN #1:
RUN #2:
RUN #3:



60 min.
10 min.
10 min.
10 min.
2
Scoring
Completed device and participation in RUN #1
Teamwork grade (as judged by instructional staff)
70 points
20 points

Using the "best" run, points will be awarded for:
Each ball in center target
Each ball in outer target
1 point each
1/2 point each

And finally, the instructional staff will award:
Best design award bonus
5 points


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End of Lab
Assignment
PLEASE TAKE YOUR DEVICE APART AND ORGANIZE THE
ERECTOR SET BEFORE YOU LEAVE THE CLASSROOM.
Lab Report
No lab reports are required for this lab experience.
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