Group 17: Gate 2: Product Dissection - Revision history

MAE 277 2012 - Group 17: /* Introduction */

2012-12-14T19:15:15Z

Introduction

MAE 277 2012 - Group 17: /* Project Management: Preliminary Project Review */

2012-12-14T19:08:22Z

Project Management: Preliminary Project Review

MAE 277 2012 - Group 17 at 15:56, 14 December 2012

2012-12-14T15:56:33Z

MAE 277 2012 - Group 17 at 15:56, 14 December 2012

2012-12-14T15:56:09Z

MAE 277 2012 - Group 17: /* Subsystems of the Weedwacker */

2012-12-12T04:42:49Z

Subsystems of the Weedwacker

MAE 277 2012 - Group 17 at 04:31, 12 December 2012

2012-12-12T04:31:09Z

MAE 277 2012 - Group 17 at 23:18, 5 December 2012

2012-12-05T23:18:05Z

MAE 277 2012 - Group 17: /* Project Management: Preliminary Project Review */

2012-12-05T23:06:27Z

Project Management: Preliminary Project Review

MAE 277 2012 - Group 17 at 23:05, 5 December 2012

2012-12-05T23:05:13Z

MAE 277 2012 - Group 17 at 22:55, 5 December 2012

2012-12-05T22:55:27Z

@@ Line 1: / Line 1: @@
 ==Introduction==
 <br>
 ==Project Management: Preliminary Project Review==
 ===Cause for Corrective Action===

← Older revision		Revision as of 19:08, 14 December 2012
Line 1:		Line 1:
		+	==Introduction==
		+	<br>
	==Project Management: Preliminary Project Review==		==Project Management: Preliminary Project Review==
	===Cause for Corrective Action===		===Cause for Corrective Action===

@@ Line 180: / Line 180: @@
 *All of the subsystems could be adjacent, but if some of the subsystems were near each other than the weed whacker would be unbalanced and unpleasant to use. The way that the subsystems are arranged now is most likely the best arrangement. It would not be very smart if the throttle trigger and safety trigger were near the head because that would be placing the users hand in danger. Other than this the subsystems could theoretically be placed near each other
 <br>
 [[Group 17 - Homelite Line Trimmer (Gasoline Powered)|Main Page]]<br>
 [[Group 17: Gate 1: Project Planning|Gate 1]]<br>
 [[Group 17: Gate 3: Product Analysis|Gate 3]]<br>
 [[Group 17: Gate 4: Product Explanation|Gate 4]]

← Older revision		Revision as of 15:56, 14 December 2012
Line 180:		Line 180:
	*All of the subsystems could be adjacent, but if some of the subsystems were near each other than the weed whacker would be unbalanced and unpleasant to use. The way that the subsystems are arranged now is most likely the best arrangement. It would not be very smart if the throttle trigger and safety trigger were near the head because that would be placing the users hand in danger. Other than this the subsystems could theoretically be placed near each other		*All of the subsystems could be adjacent, but if some of the subsystems were near each other than the weed whacker would be unbalanced and unpleasant to use. The way that the subsystems are arranged now is most likely the best arrangement. It would not be very smart if the throttle trigger and safety trigger were near the head because that would be placing the users hand in danger. Other than this the subsystems could theoretically be placed near each other
	<br>		<br>
		+	[[Group 17 - Homelite Line Trimmer (Gasoline Powered)\|Main Page]]<br>
		+	[[Group 17: Gate 1: Project Planning\|Gate 1]]<br>
		+	[[Group 17: Gate 3: Product Analysis\|Gate 3]]<br>
		+	[[Group 17: Gate 4: Product Explanation\|Gate 4]]

@@ Line 137: / Line 137: @@
 <br>
 ==Subsystems of the Weedwacker==
-====Connections between the subsystems====
+'''Connections between the subsystems'''
 *The safety system is connected to the fuel system
 :*The safety system is physically connected to the fuel system by way of a safety trigger that must be pressed in order to open the throttle. The safety trigger and throttle are both located in a housing on the shaft of the weed whacker. There is a hook that is attached to the safety trigger that does not allow the throttle trigger to be pulled. In order to move this hook out of the way the safety trigger must be pressed in order to engage the throttle. The housing holds the triggers in place. The housing is held together by standard bolts with TORX heads on them.
@@ Line 152: / Line 152: @@
 These subsystems are all connected so that energy can be created by the ignition of gasoline, then energy can be transferred from the motor to the head of the weed whacker, and then the head of the weed whacker can spin. Basically, the subsystems are connected so that the weed whacker can function correctly.
 <br>
-===GSEE Factors===
+'''GSEE Factors'''
-'''Global:'''
+*'''Global:'''
-*This whole system is meant to use gasoline and other types of fuels to decrease the amount of labor that has to be done. This would make it as a focus of first world countries, where the use of gasoline to lower labor is used quite often.
+:*This whole system is meant to use gasoline and other types of fuels to decrease the amount of labor that has to be done. This would make it as a focus of first world countries, where the use of gasoline to lower labor is used quite often.
 <br>
-'''Societal:'''
+*'''Societal:'''
-*The safety system was influenced by society because it would appeal to the consumer more if they knew they were buying a safer product. It is most likely a marketing strategy that is playing on what society wants.
+:*The safety system was influenced by society because it would appeal to the consumer more if they knew they were buying a safer product. It is most likely a marketing strategy that is playing on what society wants.
 <br>
-'''Economic:'''
+*'''Economic:'''
-*The subsystems are all relatively simple and made with cheap materials so that the product can be sold at a cheaper price. Plastic and steel can all be used at a relatively cheap price. There is also no complicated assembly work involved with this weed whacker. A weed whacker of this type can be bought for 50 dollars on sale for this reason. In addition, the weed whacker subsystems are all efficient enough that a small amount of fuel is used. This allows for cheaper operation because fuel is the main cost of operation.
+:*The subsystems are all relatively simple and made with cheap materials so that the product can be sold at a cheaper price. Plastic and steel can all be used at a relatively cheap price. There is also no complicated assembly work involved with this weed whacker. A weed whacker of this type can be bought for 50 dollars on sale for this reason. In addition, the weed whacker subsystems are all efficient enough that a small amount of fuel is used. This allows for cheaper operation because fuel is the main cost of operation.
 <br>
-'''Environmental:'''
+*'''Environmental:'''
-*The motor subsystem uses such a small amount of fuel that it is not really of environmental concern when people consider the output of greenhouse gases that cars and power plants cause. In addition, none of the subsystems contain any
+:*The motor subsystem uses such a small amount of fuel that it is not really of environmental concern when people consider the output of greenhouse gases that cars and power plants cause. In addition, none of the subsystems contain any
 <br>
-===Performance and Connection===
+'''Performance and Connection'''
 *The connections need to be as efficient at transferring energy as possible so there is less fuel consumption
 <br>
@@ Line 173: / Line 173: @@
 <br>
-===Arrangement of Subsystems===
+'''Arrangement of Subsystems'''
 *The safety system and throttle trigger are located near the center of gravity of the weed whacker for ease of use. The fuel tank and system are located in such a manner that gravity will allow gasoline to flow through the carburetor into the engine. The motor is located in such a fashion that the crankshaft is pointing in the same direction as the cable that transfers energy to the head of the weed whacker so that the cable and crank shaft can meet inside of the housing described previously. The cable is curved for ease of use so that the head can point downward and be used in an ergonomic way.
 <br>

@@ Line 13: / Line 13: @@
 ==Product Archaeology: Product Dissection==
-===Step by Step Dis-assembly===
+'''Parts Not Intended for Removal'''
-====Parts Not Intended for Removal====
+<br>
 *'''Fuel Lines'''
 :*The fuel lines are not intended to be separated from the carburetor, or fuel tank, without being cut or ripped.  The reasoning being that if they need to be replaced they can be cut or ripped off.  As a result, in order to remove the gas tank and carburetor completely from the rest of the engine, the fuel lines needed to be cut using a pair of wire cutters.
@@ Line 22: / Line 22: @@
 :*The fly wheel is fit tightly to the crank shaft in order to prevent it from falling off during use.  A press was required for proper removal. However a hammer was used instead to force the fly wheel free from the crank shaft.
 <br>
-====Ease of Dis-assembly====
+'''Ease of Dis-assembly'''
 The overall dissection of the weed whacker was relatively simple. There were a few times when multiple tools were required to take it apart. In some instances the screws were extremely tight and took patience to remove. The difficulty of removing each part of the weed whacker is measurable in accordance with the scale detailed below:
 <br>
@@ Line 31: / Line 31: @@
 The fact that the weed whacker was primarily assembled using Torx screws and Philip head screws indicates it was meant to be able to be taken apart.  However, many parts were not intended to be able to be taken apart.  Based on the difficulty of removing the fuel lines, piston, crank shaft, and the fly wheel were not intended to be removed. [[#Parts Not Intended for Removal| here]]
 <br>
-====Required Tools====
+'''Required Tools'''
 *T15 Torx screwdriver
 *Phillips #2 screwdriver
@@ Line 106: / Line 106: @@
 :*<font color="orange">All Torx screw heads are T15</font>
 <br>
-====Parts List====
+'''Parts List'''
 *Motor Assembly
 :#Motor Block