Bike-to-Shelf System for Nigerian Marketplace
Abstract
Our objective for “Project 2: Design for Emerging
Markets” was to develop a shelf system that can be
strapped onto a bicycle, carry goods very securely
and open up to provide table space to display the
items for potential buyers. We explored this type
of product by using concepts generated from every
member in our group, deciding which designs
would be most beneficial and researching patents
regarding any type structures that would impede
us in our progression. After this very extensive
research, we found a product that we think will
revolutionize the mobile sales of goods in the
street.
Team 5
Daratu Derga, Matt Murphy, Frankie Reluzco, Kristen Van Tilburg
Weighted Hierarchal Customer Needs List Obtained
from Focus Group and Individual Interviews
1) Durability (0.33, 0.33)
- Will not break down
- Weather protected
2) Portability (0.31, 0.31)
- Fast
- Aerodynamic
- Easy to peddle
- Balanced
- Light
3) Ergonomics (0.10, 0.10)
- Looks good
- Comfortable
4) Efficiency (0.26, 0.26)
- Table Space
- Can carry a lot of stuff
- Can support heavy stuff
AHP Pairwise Comparison Chart to Determine Weighting for Main Objective Categories
Durability
Portability
Ergonomics
Efficiency
Total
Weighting
Durability
1.00
2.00
3.00
1.00
7.00
0.33
Portability
.50
1.00
3.00
2.00
6.50
0.31
Ergonomics
.33
.33
1.00
.33
2.00
0.10
Efficiency
1.00
.50
3.00
1.00
5.50
0.26
Concept Improvement Through Creative Methods
Black Box
Human power to
transport
Energy
I
Materials Selection
Design Matrix for Material Selection
Durable and sturdy
Material
I: Durable materials are generally heavy and would be difficult to transport
Feature to
improve
Concept Generation
Strength
Final Design
Contradic
tion
Weight of
Stationary
Object
Principle
1. Composite
Materials
2. Copying
3. Cheap
disposable
4.Segmentation
Criteria
Tensile Norm
Strength
Density
Norm
Price
Norm
Total
Design Solutions for Principles
1. Light, hollow plastic for table surface
with heavier, solid plastic reinforcements
within
2. Metal hinges can be less expensive if
copied and mass produced. This would
allow their implementation into our design
3. Instead of a high quality tarp to protect
goods, a lower quality, thin plastic material
could be used to decrease cost.
4. The table and legs could be made out of
different materials to decrease weight
while retaining support. The design allows
them to be separated and later assembled.
Weight
0.25
0.25
0.35
0.35
0.4
0.4
Polyoxmethylene
9000
1
0.05
0.44
2.15
0.016
0.41
Polyethylene
2300
0.26
0.033
0.67
0.35
1
0.72
Knotty Pine
4500
0.5
0.022
1
1.57
0.022
0.49
Conclusion
Cost and Life
Cycle Cost
Overall, the project was very successful in
developing a product that would help fulfil every
street merchant’s need of a swift way to sell their
goods in the communal market. Our team came up
with an efficient bike-to-shelf system that can carry
goods securely strapped to a bike then opens up to
provide table space displaying the items to potential
buyers. The folded table is strapped on top of a shelf
that is clamped to the bike. The table legs and a tarp
for weather protection are stored within the folded
table. When the table is detached, unfolded, and
assembled the four legs slide easily into each of the
holes drilled into the corners of the table. The design
minimizes the skill and effort of assembly and the
folded table will be taller than it is wide making it
more portable both of these important factors appeal
to the customer needs ease of assembly and
portability.
Our product consists of fairly simple and low cost
materials. The major materials used are six stainless
steel hinges, three sheets of polyethylene, a small tarp,
and four pieces of white oak for the legs. Most of
which are recyclable and are not harmful to the
environment. In addition it will not cause any
pollution since it only requires manpower so our
product is as eco-friendly as it can possibly be.