Group 37 - Beginner Dirt Bike - Revision history

MAE277 37 09: /* Work Proposal */

2009-12-07T20:45:14Z

Work Proposal

MAE277 37 09: /* Suspension and shock absorber: */

2009-12-07T20:44:34Z

Suspension and shock absorber:

MAE277 37 09: /* Initial Product Assessment */

2009-12-07T20:30:55Z

Initial Product Assessment

MAE277 37 09: /* Brakes: Drum Brake */

2009-12-07T20:30:37Z

Brakes: Drum Brake

MAE277 37 09: /* Management proposal: */

2009-12-07T20:19:07Z

Management proposal:

MAE277 37 09: /* Management proposal: */

2009-12-07T20:15:03Z

Management proposal:

MAE277 37 09: /* Management proposal: */

2009-12-07T19:57:13Z

Management proposal:

MAE277 37 09: /* Management proposal: */

2009-12-07T19:56:51Z

Management proposal:

MAE277 37 09: /* Management proposal: */

2009-12-07T19:56:41Z

Management proposal:

MAE277 37 09: /* Management Proposal */

2009-12-07T19:55:26Z

Management Proposal

@@ Line 15: / Line 15: @@
 <br/>
-===Tool list:===
+'''Tool list:'''
 *Open ended metric wrenches,

@@ Line 152: / Line 152: @@
 <ol>
 <li>'''What is the intended use of the product?'''<br/>
+Provide a comfortable ride for the customer by weakening the vibrations due to imperfections of the road. Also to keep the tires in contact with the road to enhance traction and control.
 <li>'''Is this product for home or professional use?'''<br/>
+This product in particular is intended for a home/recreational use, but the design is basic and can be used in a variety of professional applications.
 <li>'''What are the different functions of the product?'''<br/>
+The primary function of front suspension is to attenuate the vibrations for the rider. However, because front suspensions are included in front fork, a second function would be to maintain the front wheel to the frame.
 <li>'''How do you think the product works?'''<br/>
+As the bike encounters uneven terrain, the hydraulics increase or decrease pressure in order to absorb the impact.
 <li>'''What types of energy are used?'''<br/>
+Front suspension are using mechanical and hydraulic energy.
 <li>'''How are these different types of energies transformed and modified?'''<br/>
+The trigger is mechanical energy. The suspension use both hydraulic energy and spring energy to dampen the energies and soften the ride.
 <li>'''Is the product currently functioning?'''<br/>
+The product does function.
 <li>'''How well does it run?'''<br/>
+It seems to be operating as designed. In order to adhere to safety considerations, expensive testing for suspension effects have not been performed.(The testing would make for a good story).
 <li>'''If there are any problems, where do you think they are coming from?'''<br/>
-For the suspension, low hydraulic pressure and bent components could cause problems with the suspension.
+Low hydraulic pressure and bent components could cause problems with the suspension.
 Otherwise, for the shock absorber, the shaft could present problems if it was bent, or if the spring lost its elasticity it could reduce the effectiveness of the shock absorber.
 <li>'''How complex is the product?'''<br/>
-The suspension are simple. It is comprised of an hydraulic cylinder and a shaft.
+The suspension are simple. It is comprised of an hydraulic cylinder, a shaft and a spring.
 The shock absorber is a simple design.  A shaft surrounded by a spring.
@@ Line 180: / Line 180: @@
 <li>'''For the individual components how complex are they?'''<br/>
-Each component is simple.  The spring is a simple machine in itself.  The shaft is a metal rod.  The pins are simple metal pins connecting the shock absorber to the frame.
+Each individual component is simple.
 <li>'''What materials are used in the product?'''<br/>
@@ Line 205: / Line 205: @@
 <li>'''What other alternatives to your product are there? How do these alternatives compare?'''<br/>
-There are alternatives such as air suspension, however I have not ever really seen this done.
+There are alternatives such as air suspension. Air suspension is impractical to install on a bike, srpinger front ends operate on lever action, and no shock does not allow for comfort.
 <li>'''What are the differences in cost?'''<br/>
-The air suspension is close to double the cost.
+The air suspension is close to double the cost. No shocks are free
 <li>'''What are the advantages?'''<br/>
-The main advantage of the suspension system is a much smoother ride.
+The main advantage of the suspension system is a much smoother ride for the intended users.
 <li>'''What are the disadvantages?'''<br/>
+Maintenance is complicated, for average customer professional assistance is required. It also has a limited operational load range
 </ol>
 <br/>

@@ Line 75: / Line 75: @@
 == Initial Product Assessment ==
-===Brakes: Drum Brake===
+===Brakes===
 <ol>
 <li>'''What is the intended use of the product?'''<br/>

@@ Line 84: / Line 84: @@
 <li>'''What are the different functions of the product?'''<br/>
-Brakes are designed with one intended fonction(function), stopping or slowing a vehicle. You can also use them to restrain the vehicle from starting to move again.
+Brakes are designed with one intended function(function), stopping or slowing a vehicle. You can also use them to restrain the vehicle from starting to move.
 <li>'''How do you think the product works?'''<br/>
-The customer pull on the brake lever witch actions  the brake with a cable system.The brakes open and apply a force against the wheel which with frictions slows or stops.
+The customer activates the brake witch a cable system. The brake shoes, which are fixed to the frame to prevent rotation, are forced inside of the brake drum. This applies a frictional force that the opposes the rotation of the drum.
-The consumer activates the brake with a cable system. The brake shoes, which are fixed to the frame to prevent rotation, are forced against the inside of the break drum to apply a frictional force that opposes the rotation of the drum.
 <li>'''What types of energy are used?'''<br/>
-This product uses mechanical energy. There is frictions between the brakes and the wheel
+This product uses mechanical energy. There is friction between the brakes and the wheel
 <li>'''How are these different types of energies transformed and modified?'''<br/>
-The customer use mechanical energy to action the brakes. Then the kinetic energy lost by the wheel is usually transformed into heat by friction.
+The customer applies kinetic energy to action the brakes. The kinetic energy lost by the wheel is usually transformed into heat by friction.
 <li>'''Is the product currently functioning?'''<br/>
 Yes, there does not appear to be any problems with the operation of this component.
 <li>'''How well does it run?'''<br/>
 The wheel turns smoothly when the break is released and stops quietly after it is applied.
 <li>'''If there are any problems, where do you think they are coming from?'''<br/>
-No noticeable flaws in function. The brakes get used after a while because of friction. So sometimes you need to change it.
+No noticeable flaws in function.
 <li>'''How complex is the product?'''<br/>
@@ Line 111: / Line 108: @@
 <li>'''How many components are used?'''<br/>
-There is two primary components, the wheel and the brakes. Generally the brakes are in two parts. Then there is few additional components as the axle  wheel, an arm actionable by a cable and seals.
+The main components of a drum break system are the shoes and the drum. Other components include fasteners, springs and cables.
 The main components of a drum break system are the shoes and the drum.
 <li>'''For the individual components how complex are they?'''<br/>
-The brakes are a simple mechanical device on the bike.  They are triggered by user input on a handle which creates tension on a cable.  As the the cable tenses it will compress the cylinder causing the drums to meet the wheel, which creates friction and slows the wheels revolutions.  This slows the forward motion. (we don't need to explain how it works here)
+The components are simple. Each component is made up of basic geometry and are combined into a simple machine.
 <li>'''What materials are used in the product?'''<br/>
@@ Line 124: / Line 120: @@
 <li>'''Based on previous answers to the above questions, what materials do you think are not visible but present?'''<br/>
-A cylinder is in the drum.  There are also tensioner springs in the drum.  Abrasive pads serve to create the friction.
+Abrasive pads serve to create the friction.
 <li>'''If you had to use this product, would you be happy with it?'''<br/>
@@ Line 130: / Line 126: @@
 <li>'''Is the product comfortable to use?'''<br/>
-Comfort is not really applicable for the brakes. Yes, the lever action multiplies the force exerted by the user so less effort is required to stop the vehicle.
+Yes, the lever action multiplies the force exerted by the user so less effort is required to stop the vehicle.
 <li>'''Is the product easy to use?'''<br/>
@@ Line 136: / Line 132: @@
 <li>'''Does the product require regular maintenance? If so is the product easy to service?'''<br/>
-Not regularly, but maintenance is required.
+Yes, regular maintenance is required. The cable connecting the lever on the handle bars to the break assembly requires occasional lubrication. The shoes inside the break drum are a regularly replaceable item. The lubrification of the cable is easy, but the break shoe replacement will require tools and a general mechanical knowledge of the brake system.
 Yes, regular maintenance is required. The cable connecting the lever on the handle bars to the break assembly requires occasional lubrication. The shoes inside the break drum are a regularly replaceable item.
 <li>'''What other alternatives to your product are there? How do these alternatives compare?'''<br/>

@@ Line 28: / Line 28: @@
 ==Management proposal:==
 General meetings will be held Mondays at 2:00 P.M. in the lower Knox common area. They will address timeless, progress, goals for the week, and set up any additional meeting times for the week.<br/>
+===Team management===
 '''Project Leader:''' Thomas Heyden<br/>
 Oversight and coordination of team efforts, communication with the instructors, and call a close to the project when delivery is reached.<br/>
@@ Line 63: / Line 63: @@
 <br/>
+===Time management===
 As shown in Chart 1 we used a Gannt chart to define our time management and major deadlines.<br/>

@@ Line 29: / Line 29: @@
 General meetings will be held Mondays at 2:00 P.M. in the lower Knox common area. They will address timeless, progress, goals for the week, and set up any additional meeting times for the week.<br/>
-===Project Leader=== Thomas Heyden<br/>
+===Project Leader===
 Oversight and coordination of team efforts, communication with the instructors, and call a close to the project when delivery is reached.<br/>
 ''strengths:''<br/>

@@ Line 1: / Line 1: @@
 [[Image:picture01.jpg|thumb|right|upright=2|The beginner dirt bike]]
-== Management Proposal ==
 == Work Proposal ==