Gate 1: Request for Proposal - Harley-Davidson® Rocker™ Power Wheels

From GICL Wiki
Jump to: navigation, search

Contents

Project Management

Work Proposal



Approach to dissection process:

*All exterior screws are Philips Head

*The numbers next to the steps are the interval of the estimated time in minutes.

1) Remove 2 screws holding on the seat and remove seat, 0:20 - 0:30
2) Disconnect battery, and remove battery retaining bar, and remove battery, 0:10 - 0:15
3) Remove the four screws holding seat together to disassemble seat, 0:40 - 1:00
4) Remove the two headlight retainers, by removing two screws in each, 0:40 - 1:00
5) Remove headlight piece by removing the four screws, 0:40 - 1:00
6) Remove handlebar bracket, 2 screws, 0:20 - 0:30
7) Remove handlebar and front wheel assembly, 0:10 - 0:15
8) Remove the front axle brackets from wheel assembly, 4 screws, 0:40 - 1:00
9) Separate wheel and axle from front fork and slide off front wheel spacers, 0:20 - 0:30
10) Remove front wheel covers, 3 screws each, 1:20 - 1:30
11) Remove the top and bottom frame braces 2 screws each, 0:40 - 1:00
12) Remove the pedal side decorative engine piece, 3 screws, 0:30 - 0:45
13) Remove rear fender by, 1:20 - 2:00 :
  • Remove four screws around battery compartment on top, 0:40 - 1:00
  • Remove two screws on either side of vehicle, 0:20 - 0:30
  • Remove two screws under back and remove plastic piece, 0:20 - 0:30
14) Remove console panel, 2 screws in Harley-Davidson symbols on right and left frame, 0:20 - 0:30
15) Remove left wheel, remove blue plastic cover using flat head screw driver and pull wheel off, 0:20 - 0:30
16) Remove screws around seam of body, 6 visible screws, and separate the two frames, 1:20 - 1:30


The steps above were determined using figure 1, as well as examining the exterior of the actual product. Further steps will be determined during actual dissection of product.


List of tools

  • Philips Head Screwdriver
  • Flat Head Screwdriver
  • Needle nose pliers


Estimated total time for dissection and documentation:

  • Between a half hour to forty five minutes


Challenges

  • The wheels are tamper resistant, no other challenges predicted after the initial inspection of the product.

Group Member Details

Member Jobs Strengths Shortcomings Skills to Develop
Timothy Anger Assistant Editor

Class Presenter
Documentation Assistant

Decent public speaker

Patient
Quick learner
Good at explaining things
Hard worker once started

Procrastination

Bad handwriting and spelling
Disorganized
Forgetful
Can be easily distracted

Improve public speaking

Proof-reading skills

Emmanuel Cabrera 3D Modeling Lead
Assistant Project Manager
Dissection & Assembly Lead
Efficient with:
  • Word
  • Excel
  • Power Point
  • AutoCAD
  • Photoshop

Good at taking things apart and putting them back together

Poor writing skills

English is second language

Learn how to use AutoCAD to create 3D models

Improve time management

Matthew Cheverino Editor

Project Manager
Dissection & Assembly Assistant

Experience with leadership roles

Proficient in proofreading
Good at figuring out how things work

Chronic Procrastinator

Unorganized
Distracted Easily

Improve group management
Nixon Lim 3D Modeling Assistant

Photographer
Presentation Writer
Website Developer

Previous experience with photography

Previous experience in 3D modeling
Good with technology

No previous experience developing or editing a website

Procrastination
Limited vocabulary

Increase critical thinking skills

Learn to develop the wiki page

Pradeep Raghupathy Assistant Website Developer

Lead of Documentation
Main Dissection & Assembly Assistant

Worked in a garage

Good with tools
Good at analysis

Little experience in documenting

Trouble with English grammar

Increase writing grammar skills

*Job descriptions are listed in the management proposal.

Management Proposal


* Jobs of individual group members are listed, in the chart under Work Proposal.


Project Manager: Makes sure group stays on task and gets work in on time, organizes and runs group meetings.

Assistant Project Manager: Assumes responsibilities of project manager in the absence of project manager.

Lead of Documentation: In charge of documenting the dissection process.

Documentation Assistant: Helps document the dissection process

Photographer: Takes pictures of product and components to post on the Wiki page.

Editor: Proofreads and makes changes to all written work before final submission to Wiki page.

Assistant Editor: Proofreads work submitted by Editor

Dissection & Assembly Lead: In charge of taking apart and putting product back together

Dissection & Assembly Assistant: Helps take apart and reassemble product

3D Modeling Lead: In charge of creating and/or finding 3D models of components

3D Modeling Assistant: Helps find/ create 3D models of components

Presentation Writer: Writes the oral presentation to be given in front of the class.

Class Presenter: Will give oral presentation in front of class.

Website Developer: Designs Wiki for the project and puts technical report together on the Wiki page.

Assistant Website Developer: Helps Website Developer put information on the Wiki page.


We plan to use a gantt chart and google calendar to manage and organize our work more efficiently. The gantt chart, shows all of the tasks, breaking down what needs to be done. Using this along with google calendar, we can figure out how much time we have to complete each task and how much time we need to set aside for meetings and group work. There will be mandatory meetings every Saturday at 3 pm in Capen library. Group meetings are planned to take between an hour and a half and two hours. At the meetings we will distribute the workload and work on the upcoming gate.

Project Management Plan

Gantt Chart - the bar chart that expresses project schedule for Group 25's reverse engineering project.

Conflict Resolution

Any conflicts will be resolved at the weekly meetings. Any member of the group that repeatedly misses the weekly meeting without a valid excuse or chronically submits their parts of the project late will be reported to the professor.

Pre-Dissection Assessment


Development Profile

History

The first power wheels vehicle was develop in 1971.“More than 30 years later and with over 25 million vehicles on the road to date, Power Wheels continues to be the #1 battery powered vehicle brand in the business.” (Proven Leadership) After the power wheels became part of Fisher-Price, in 1999 they announced the “Harley-Davidson Motorcycle Ride-On – which contributed to a year of record sales for the entire product line.”(Power Wheels). The Harley-Davidson Rocker Power wheel that is being analyzed in this report was made in 2009. The Power Wheels Harley Davidson Rocker is sold “at major toy retailers and discount merchandisers in the U.S.” (General Information)

Impact

Economic & Global: Plastic is a reusable material that is also fairly cheap and widely available. Also the product is mainly injection molded which, while having a large upfront cost, is cost effective to make the same pieces in large quantities. The product is also designed to look similar to a motorcycle which are considered to be cool by kids.
Consumer: The intended impact on the consumer is to provide a form of entertainment to young children that makes them feel like they are older.

Usage Profile

The product is manufactured by the Fisher Price Company, and is a toy made for children who are between the ages of one and a half and four years old. This product is for both home and professional use. The product is made for toddlers and small children, and can be used by kids at home or school.


  • Professional: Researchers, who study child psychology and behavior, can use the product to understand them (children) better. The toy makers can use the product to study their
own toys and make them better. They could let the children interact with different products or toys and analyze the kind of toys the children like and what kind of toys the children are attracted to; and in doing so they can draw a statistical analysis of the different kinds of toys that different types of children use. The manufacturer can then use these statistics to make toys in varying numbers depending on user (the children) preference. The toys could even be made more educational and interesting for the children so that it can help them in their mental development and growth.


  • Home: The main job that this product performs is the entertainment of small children by mimicking a Harley Davidson motorcycle. The product stimulates a child’s imagination by
allowing them to feel like they are riding a motorcycle without actually letting them operate an expensive and dangerous vehicle. As the product is made for toddlers and small children, it can even help to better develop their reflexes and motor skills by teaching them to react to and avoid obstacles.


Energy Profile

The toy has different mechanical parts that convert electrical energy into chemical energy, and then on applying human energy, it converts the chemical energy into electrical energy, mechanical energy, rotational energy and translational kinetic energy. Electrical energy is inputted into the system using wires to charge the battery by plugging it into an electric power outlet. Human energy is used in activating and steering the product. The following shows how the different types of energy are transformed and modified in chronological order.

  • Electrical energy is used to charge the 6 volt lead-acid battery.
  • The battery converts the electrical energy into stored chemical energy. When the battery is charged, it can be used to drive the toy.
  • The battery converts the stored chemical energy into electrical energy when foot pedal is pressed using human energy.
  • The peddle completes the circuit when it is pressed down using human effort and transmits the electricity to the motor.
  • The motor converts the electrical energy to mechanical energy. The motor then turns the gear and the wheels converting the mechanical energy into rotational energy.
  • The wheel moves the toy forward converting the rotational energy into translational kinetic energy.
  • Finally human energy is required to maneuver the toy in different directions.

Complexity Profile

The product does not have many mechanical parts. The product is mostly molded plastic with a battery, a motor and a few electronic components which helps in regulating the electricity to the motor from the battery. It uses basic maneuvering levers and a switch to link the battery to the motor.

  • External: The outer casing of the product is plastic molding, and is complex in terms of the design. The molding or the outer casing is broken down into various parts and are fixed or
assembled using screws. The following link shows the parts and the molding assembly.
http://www.hobbymasters.com/ProductImages/powerwheels/breakdowns/P5065.pdf
  • Internal: The internal parts are the motor, lead acid battery, and electronic components that work based on mechanical, chemical and electrical energy. The battery is charged using
the electricity, which splits the ionic bond in the lead acid battery and moves the positive and the negative charge onto two separate sides of the battery when the charging is completely done, and it stores the electrical energy as chemical energy. The chemical energy then changes to electrical energy, which is used to drive the motor. The motor internally has copper coil, magnets and induction plates or coils, which rotate the shaft and the shaft rotates the gearbox, and finally the gearbox turns the wheel.

How complex are the individual components? In figure 1, different parts of the products are illustrated. Most of the components are made from plastic. The plastic parts are molded depending on their mechanical function and design or shape. The product complexity can be scaled between 1 and 3 depending on the aforementioned factors.

  1. The product part is simple and has a very basic function of adding aesthetic value to the product.
  2. Has minimal mechanical function and the product offers both mechanical function and aesthetic value.
  3. The part only has a mechanical function.

Using the parts list figure (Figure 1) we estimate the number of components , excluding screws, to be approximately 55-65 pieces.

Majority of the parts are connected to form the frame. Thus these parts help support the load, act as the frame and add aesthetic value. Thus these parts can be giving a complexity value of 2 in the complexity scale.

Very few parts like the right and left engine of the product only add an aesthetic value. Thus these products can be given a complexity of 1 on the complexity scale.

Parts such as the motor, battery, axle, and footboard have only mechanical functions and are given a complexity of 3 according to the complexity scale. For more information on the complexity of individual components refer to Gate 3.

Materials Profile

The Power Wheels Harley Davidson Rocker is composed primarily of hard plastic components. It also contains components that have steel, copper, and lead.

Visible Internal
Plastic
Steel (screws)


Plastic
Steel
Lead (Battery)
Copper (wires)

User Interaction Profile

The user interacts with the product in the following ways:

  • riding the product
  • turning the product
  • pressing the pedal down
  • switching the product between forward and reverse
  • putting in and removing the battery


Levels of Intuitiveness
5 - Extremely intuitive; the user knows what the control does without ever operating a similar device
4 - Mostly intuitive; the user knows what the control does due to experience with a similar device
3 - Average; the user knows what a control does due to reading the instructions or watching another person operate the device
2 - Not really intuitive, the user needs to read the manual several times or be taught how to operate the device several times before knowing what the control does
1 - Not intuitive; the user cannot initially operate the product without help or prior knowledge


Interfaces

  • Turning: Turning the power wheel involves turning the handlebars in the direction the user wants to turn.
Intuitive rating 5
  • Moving: In order to move the power wheel the user must press the pedal down.
Intuitive rating 4
  • Braking-In order for the user to stop the power wheel he/she must release the pedal.
Intuitive rating 4
  • Switch forward/reverse-Switching between forward and reverse requires the user to switch which button on the frame is depressed.
Intuitive rating 3
  • Putting the battery in: Putting the battery in requires the user to remove the seat and battery retainer and then connecting the battery to the product.
Intuitive rating 3.

The product was made very easy to use because it was designed to be used by young children; the most confusing part is knowing whether the product is in forward or reverse. The few controls it has are quite simple to understand. The product requires some regular maintenance, for example, checking the screws regularly and tightening them if needed, checking for cracked or broken plastic, charging the battery, and keeping it clean by wiping it down with a soft dry cloth. The regular maintenance is easy and will only take a few minutes to complete, except for recharging the battery. If any major problems are found, the product should be brought to a Power Wheels® authorized service center for diagnosis and repair.

Product Alternative Profile

The Power Wheels Harley Davidson Rocker Ride On works the same way as all the other Power Wheels toys, a small plastic vehicle is moved using a battery. This means that any Power Wheels toy is a choice when looking for alternatives to the Power Wheels Harley Davidson. The Power Wheels toys allow children to have fun outdoors and look cool doing so while also giving an adult the ability to watch and keep up with them because of their limited speed. However, the Power Wheels toys give no form of exercise, unlike tricycles and the PlasmaCar, which both cost between fifty and seventy dollars, while the Power Wheels Harley Davidson costs one hundred and twenty to one hundred fifty dollars.

  • a) The tricycle helps the child’s leg muscles develop properly with exercise, but allows the child to move much faster than any Power Wheels toy, thus making the tricycle potentially more dangerous than the Power Wheels toys.
  • b) The PlasmaCar is a toy that can maneuver around by the twisting of the steering wheel, exercising the child’s arm muscles. It uses gravity and friction to move around on smooth level ground, does not move very quickly and is quite safe.


Product Advantages Disadvantages
Power Wheels Harley Davidson More aesthetically pleasing, More Leisure, Lower Speed allows parent to keep up with child Lower Speed also lowers enjoyment, Only operational on flat surfaces, Needs battery power, More Expensive
Tricycle Exercise, Higher Speed, Operational on bumpy surfaces of uphill and downhill, Less Expensive Higher Speed causes less safety and higher risk
PlasmaCar Exercise, Higher Speed, Less Expensive Higher Speed causes less safety and higher risk, Only operational on flat surfaces

Main Page

To navigate back to the main page click Group 25 - Harley-Davidson® Rocker™ Power Wheels

References

[1] "POWER WHEELS® Harley-Davidson Rocker™." Kaboodle - Shopping for people, by people. Web. 30 Sept. 20010 <http://www.kaboodle.com/reviews/power-wheels-harley-davidson-rocker>
[2] "PlasmaCar." Amazon.com. Web. 30 Sept. 2010 <http://www.amazon.com/PlasmaCar-88040-Blue/dp/B000GUGY1S>
[3] "Power Wheels." Wikipedia, the Free Encyclopedia. Web. 30 Sept. 2010. <http://en.wikipedia.org/wiki/Power_Wheels>
[4] "Battery Powered Ride On Toys: Why Choose Power Wheels Riding Toys." Toys, Baby Gear, Parenting Guide & More from Fisher Price. Web. 30 Sept. 2010. <http://www.fisher-price.com/us/powerwheels/whyChoose.aspx>
[5] "Power Wheels By Fisher-Price -- Vehicles, Batteries, and Chargers." Toys, Baby Gear, Parenting Guide & More from Fisher Price. Web. 30 Sept. 2010. <http://www.fisher-price.com/us/powerwheels/consumerInfo.aspx>
[6] "Breakdown of Power Wheels Harley Davidson Rocker Components." Breakdown of Power Wheels Harley Davidson Rocker Components. Web. 30 Sept. 2010. <http://www.hobbymasters.com/ProductImages/powerwheels/breakdowns/P5065.pdf>