Group 17 - Product Name Here - Revision history

MAE 277 2011 Group17 at 02:37, 29 February 2012

2012-02-29T02:37:03Z

Show changes

MAE 277 2011 Group17: Blanked the page

2012-02-03T14:00:21Z

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MAE 277 2011 Group17: /* System Design Revisions */

2011-12-19T22:12:06Z

System Design Revisions

MAE 277 2011 Group17: /* Main Casing Revision */

2011-12-19T22:09:08Z

Main Casing Revision

MAE 277 2011 Group17: /* Product Reassembly */

2011-12-19T22:07:54Z

Product Reassembly

MAE 277 2011 Group17: /* Design Revisions */

2011-12-19T22:03:07Z

Design Revisions

MAE 277 2011 Group17: /* Gate 3: Product Analysis */

2011-12-19T22:02:19Z

Gate 3: Product Analysis

MAE 277 2011 Group17: /* Air Filter Cover */

2011-12-19T21:57:33Z

Air Filter Cover

MAE 277 2011 Group17: /* Clutch Cover */

2011-12-19T21:57:13Z

Clutch Cover

MAE 277 2011 Group17: /* Fly Wheel Cover */

2011-12-19T21:56:57Z

Fly Wheel Cover

@@ Line 1,409: / Line 1,409: @@
 =====Main Casing Revision=====
-[[File:0.84.gif|center|thumb|300px|Image 51: Current Chainsaw Design]]
+[[File:0.84.gif|center|thumb|300px|Image 64: Current Chainsaw Design]]
 <U>'''Current Design:'''</u><br/>
 As seen in image 51, the current design of our chainsaw has full aluminum body.  This current design causes the chainsaw to be much heavier then it needs to be.<br/><br/>
-[[File:Screen shot 2011-12-04 at 8.14.54 PM.png|right|thumb|300px|Image 64: Proposed Chainsaw Design]]
+[[File:Screen shot 2011-12-04 at 8.14.54 PM.png|right|thumb|300px|Image 65: Proposed Chainsaw Design]]
 <U>'''Proposed Design:'''</u><br/>
@@ Line 1,436: / Line 1,436: @@
 <U>'''Current Design:'''</u><br/>
-The current design of the chainsaw has a simple chain and guide bar system that allows for the proper functionality of the chainsaw, which is to remove material (Image 53 is our stock chain-bar). <br/><br/>
+The current design of the chainsaw has a simple chain and guide bar system that allows for the proper functionality of the chainsaw, which is to remove material (Image 66 is our stock chain-bar). <br/><br/>
-[[File:IMG 1058.JPG|center|thumb|200px|Image 53: Chain bar]]
+[[File:IMG 1058.JPG|center|thumb|200px|Image 66: Chain bar]]
 <U>'''Proposed Design:'''</u><br/>
 We propose to incorporate an entirely new chain/bar safety system including features such as: a chain brake, chain catcher, a bar tip protector, or a kickback reducing chain that will increase the safety of the overall product.
-[[File:Quide.jpg|center|thumb|300px|Image 54: Location of Chain Brake and Chain Catcher [[#Source|[14]]] ]]<br>
+[[File:Quide.jpg|center|thumb|300px|Image 67: Location of Chain Brake and Chain Catcher [[#Source|[14]]] ]]<br>
-'''Chain Brake''' – applies a steel brake band around the clutch drum as shown in Image 55 and Image 54 #1 shows the location of the chain brake. This steel brake band band stops the chain when the machine is a partial throttle. In between cuts and during starting there will be no wild chain movements which is commonly a hazardous problem for older chainsaws such as ours.<br>
+'''Chain Brake''' – applies a steel brake band around the clutch drum as shown in Image 68 and Image 67 #1 shows the location of the chain brake. This steel brake band band stops the chain when the machine is a partial throttle. In between cuts and during starting there will be no wild chain movements which is commonly a hazardous problem for older chainsaws such as ours.<br>
-[[File:Image brake engaged.jpg|center|thumb|300px|Image 55: Chain break set-up inside clutch [[#Source|[15]]] ]]
+[[File:Image brake engaged.jpg|center|thumb|300px|Image 68: Chain break set-up inside clutch [[#Source|[15]]] ]]
-'''Kickback Reducing Chain'''- There are many styles and types of chains that can be put onto our chainsaw each with a distinct function.Some of these chains include a self lubricating, self sharpening,low vibration, and "Ripping" chains. These chains even though they improve functionality are too specific to the user to set as the default chain. We propose a this anti kickback chain because all users will be interested in safety. This chain consists of a guard(side) links in front of each cutter link. Which reduces the tendency of the leading edge of the depth gauge to snag on small-diameter objects or cut through medium sized timber with ease. Depth gauge(railer), a small steel protuberance in front of each cutting tooth. The difference in height between the leading cutting edge and the depth gauge determines the thickness of the wood chip taken by the cutter, which gives the user better performance and minimized kickback if set correctly. Image 56 points out each component of the new chain.<br>
+'''Kickback Reducing Chain'''- There are many styles and types of chains that can be put onto our chainsaw each with a distinct function.Some of these chains include a self lubricating, self sharpening,low vibration, and "Ripping" chains. These chains even though they improve functionality are too specific to the user to set as the default chain. We propose a this anti kickback chain because all users will be interested in safety. This chain consists of a guard(side) links in front of each cutter link. Which reduces the tendency of the leading edge of the depth gauge to snag on small-diameter objects or cut through medium sized timber with ease. Depth gauge(railer), a small steel protuberance in front of each cutting tooth. The difference in height between the leading cutting edge and the depth gauge determines the thickness of the wood chip taken by the cutter, which gives the user better performance and minimized kickback if set correctly. Image 69 points out each component of the new chain.<br>
-[[File:Images.jpg|center|thumb|350px|Image 56: Anti-Kickback Chain [[#Source|[16]]] ]]
+[[File:Images.jpg|center|thumb|350px|Image 69: Anti-Kickback Chain [[#Source|[16]]] ]]
-'''Chain Catcher'''- The chain catcher literally catches the chain if the machine kicks back and snaps the chain or if it simply pops off (Image 57 shows chain catcher. Image 54 #2 shows location.) This is important because when the chain is moving at very high speeds, if it does pop off it can be considered deadly shrapnel.<br>
+'''Chain Catcher'''- The chain catcher literally catches the chain if the machine kicks back and snaps the chain or if it simply pops off (Image 70 shows chain catcher. Image 67 #2 shows location.) This is important because when the chain is moving at very high speeds, if it does pop off it can be considered deadly shrapnel.<br>
-[[File:Chain guard.png|center|thumb|200px|Image 57: Chain catcher]]
+[[File:Chain guard.png|center|thumb|200px|Image 70: Chain catcher]]
 '''Bar tip Protector'''- This is a protection device that will not allow the chain to cut at the tip of the chain arm (Image 58).
 .<br/><br/>
-[[File:Chainsaw safety.jpg|center|thumb|200px|Image 58: Bar tip Protector]]
+[[File:Chainsaw safety.jpg|center|thumb|200px|Image 71: Bar tip Protector]]
 <U>'''Motivation for Revision:'''</u><br/>
@@ Line 1,472: / Line 1,472: @@
 <U>'''Current Design:'''</u><br/>
-Currently the only thing on our chainsaw protecting the user from vibration is a small amount of rubber covering the metal handles as shown in image 59.  Since it was manufactured in the 1970s many anti vibration techniques had not been developed yet.<br/><br/>
+Currently the only thing on our chainsaw protecting the user from vibration is a small amount of rubber covering the metal handles as shown in image 72.  Since it was manufactured in the 1970s many anti vibration techniques had not been developed yet.<br/><br/>
-[[File:Chainsawhandle.JPG|center|thumb|300px|Image 59: Current handle]]
+[[File:Chainsawhandle.JPG|center|thumb|300px|Image 72: Current handle]]
 <U>'''Proposed Design:'''</u><br/>
-Today’s chainsaws are normally divided into two sections. The first section can be considered the chain and the engine, these two components vigorously vibrate while the machine is at full throttle. The second section can be considered the handles and the controls.  We propose to separate these two sections of our chainsaw. Separating the two sections will allow the vibrations of the engine(section 1) to not transfer to the handle(section 2)thus, not transfer to the user.  In order to have two independent sections that work as one something has to hold them together, but hold them in a way that the vibrations do not transfer. To do this, (soft) '''rubber bushings''' will be used such as the one seen in image 60 and (stiff) '''metal springs''' as shown in image 61.  Soft bushings so the engines small yet powerful vibrations can each be absorbed but stiff springs so the weight of the engine is supported.  These will act as a suspension such as that you would  see on a bicylce.
+Today’s chainsaws are normally divided into two sections. The first section can be considered the chain and the engine, these two components vigorously vibrate while the machine is at full throttle. The second section can be considered the handles and the controls.  We propose to separate these two sections of our chainsaw. Separating the two sections will allow the vibrations of the engine(section 1) to not transfer to the handle(section 2)thus, not transfer to the user.  In order to have two independent sections that work as one something has to hold them together, but hold them in a way that the vibrations do not transfer. To do this, (soft) '''rubber bushings''' will be used such as the one seen in image 73 and (stiff) '''metal springs''' as shown in image 74.  Soft bushings so the engines small yet powerful vibrations can each be absorbed but stiff springs so the weight of the engine is supported.  These will act as a suspension such as that you would  see on a bicylce.
 '''Motivation for this design''' this revision is mostly impacted by '''societal factors'''.  Reducing the vibration will make the chainsaw much more comfortable to use and will allow the consumer to use the product for a much longer time period.   This system revision will also drastically lessen the chance of injury due to excessive vibrations.<br/><br/>
-[[File:Rubberbushing.png|center|thumb|300px|Image 60: '''Location''' Rubber bushing between the frame and the interior casing ]]
+[[File:Rubberbushing.png|center|thumb|300px|Image 73: '''Location''' Rubber bushing between the frame and the interior casing ]]
-[[File:Spring.png|center|thumb|300px|Image 61: '''Location''' Metal spring isolates engine block]]
+[[File:Spring.png|center|thumb|300px|Image 74: '''Location''' Metal spring isolates engine block]]
 <U>'''Future Plans:'''</u><br/>

@@ Line 1,414: / Line 1,414: @@
 As seen in image 51, the current design of our chainsaw has full aluminum body.  This current design causes the chainsaw to be much heavier then it needs to be.<br/><br/>
-[[File:Screen shot 2011-12-04 at 8.14.54 PM.png|right|thumb|300px|Image 52: Proposed Chainsaw Design]]
+[[File:Screen shot 2011-12-04 at 8.14.54 PM.png|right|thumb|300px|Image 64: Proposed Chainsaw Design]]
 <U>'''Proposed Design:'''</u><br/>

@@ Line 1,333: / Line 1,333: @@
 | align="center" style="background:#8E2323;"|'''Image'''
 |-
-|1||Center Shaft/ Right Casing|| None|| Insert clutch side of the center shaft(side with larger threads) into the right casing (side that lacks oil and gas ports).||30-60 sec||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]] || [[File:Screen shot 2011-12-03 at 1.19.08 PM.png|center|thumb|200px|Image 28: Assembly Process Step 1]]
+|1||Center Shaft/ Right Casing|| None|| Insert clutch side of the center shaft(side with larger threads) into the right casing (side that lacks oil and gas ports).||30-60 sec||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]] || [[File:Screen shot 2011-12-03 at 1.19.08 PM.png|center|thumb|200px|Image 41: Assembly Process Step 1]]
 |-
-|2||Trigger/ Connecting Rod/Left Casing|| None|| Mount the trigger on its designated rod built into the right casing.<br/>  (Note: Connecting rod should navigate towards the left side of the product)||15-30 sec||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]] ||[[File:Screen shot 2011-12-03 at 1.17.48 PM.png|center|thumb|200px|Image 29: Assembly Process Step 2]]
+|2||Trigger/ Connecting Rod/Left Casing|| None|| Mount the trigger on its designated rod built into the right casing.<br/>  (Note: Connecting rod should navigate towards the left side of the product)||15-30 sec||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]] ||[[File:Screen shot 2011-12-03 at 1.17.48 PM.png|center|thumb|200px|Image 42: Assembly Process Step 2]]
 |-
-|3||Left Casing||Flat Head<br/>Screw Driver||Attach left casing to right casing enclosing the trigger system, and center shaft between the two casings. Using the flat head screw driver, tightly screw all four screws into place.||2-4 mins||[[File:Screen shot 2011-12-04 at 6.43.42 PM.png|center||200px]]||[[File:Screen shot 2011-12-03 at 1.31.14 PM.png|center|thumb|200px|Image 30: Assembly Process Step 3]]
+|3||Left Casing||Flat Head<br/>Screw Driver||Attach left casing to right casing enclosing the trigger system, and center shaft between the two casings. Using the flat head screw driver, tightly screw all four screws into place.||2-4 mins||[[File:Screen shot 2011-12-04 at 6.43.42 PM.png|center||200px]]||[[File:Screen shot 2011-12-03 at 1.31.14 PM.png|center|thumb|200px|Image 43: Assembly Process Step 3]]
 |-
-|4||Piston Ring||None||Place the piston ring in the groove that runs around the circumference of the piston. Ensure that the ring does not protrude from the contour of the piston to ensure the following step will run smoothly.||2-4 mins||[[File:Screen shot 2011-12-04 at 6.43.42 PM.png|center||200px]]||[[File:Screen shot 2011-12-03 at 1.23.08 PM.png|center|thumb|200px|Image 31: Assembly Process Step 4]]
+|4||Piston Ring||None||Place the piston ring in the groove that runs around the circumference of the piston. Ensure that the ring does not protrude from the contour of the piston to ensure the following step will run smoothly.||2-4 mins||[[File:Screen shot 2011-12-04 at 6.43.42 PM.png|center||200px]]||[[File:Screen shot 2011-12-03 at 1.23.08 PM.png|center|thumb|200px|Image 44: Assembly Process Step 4]]
 |-
-|5||Engine block||Adjustable Wrench||Carefully slide the piston into the cylinder of the engine block. Once the piston is in, secure engine block to the main casing using four nuts and bolts. An adjustable wrench will be needed in order to fasten the bolts. (Note: To ensure engine block is not upside down, exhaust outlet should be exposed, refer to Image 32.) ||2-4 mins||[[File:Screen shot 2011-12-04 at 6.43.42 PM.png|center||200px]]|| [[File:Screen shot 2011-12-03 at 1.36.45 PM.png|center|thumb|200px|Image 32: Assembly Process Step 5]]
+|5||Engine block||Adjustable Wrench||Carefully slide the piston into the cylinder of the engine block. Once the piston is in, secure engine block to the main casing using four nuts and bolts. An adjustable wrench will be needed in order to fasten the bolts. (Note: To ensure engine block is not upside down, exhaust outlet should be exposed, refer to Image 32.) ||2-4 mins||[[File:Screen shot 2011-12-04 at 6.43.42 PM.png|center||200px]]|| [[File:Screen shot 2011-12-03 at 1.36.45 PM.png|center|thumb|200px|Image 45: Assembly Process Step 5]]
 |-
-|6||Carburetor/Intake||Flat head Screw Driver|| Place The intake on top the carburetor and fasten together using two screws and the flat head screw driver||1 min||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Screen shot 2011-12-04 at 4.29.17 PM.png|center|thumb|200px|Image 33: Assembly Process Step 6]]
+|6||Carburetor/Intake||Flat head Screw Driver|| Place The intake on top the carburetor and fasten together using two screws and the flat head screw driver||1 min||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Screen shot 2011-12-04 at 4.29.17 PM.png|center|thumb|200px|Image 46: Assembly Process Step 6]]
 |-
-|7||Trigger/fuel lines/ Choke switch||None||Flip the chainsaw right side up. Latch the trigger system to the intake.Place fuel lines in their appropriate position on the carburetor. Latch the choke switch to the intake.||4-7 mins||[[File:Screen shot 2011-12-04 at 6.43.55 PM.png|center||200px]]||[[File:Screen shot 2011-12-04 at 4.35.33 PM.png|center|thumb|200px|Image 34: Assembly Process Step 7]]
+|7||Trigger/fuel lines/ Choke switch||None||Flip the chainsaw right side up. Latch the trigger system to the intake.Place fuel lines in their appropriate position on the carburetor. Latch the choke switch to the intake.||4-7 mins||[[File:Screen shot 2011-12-04 at 6.43.55 PM.png|center||200px]]||[[File:Screen shot 2011-12-04 at 4.35.33 PM.png|center|thumb|200px|Image 47: Assembly Process Step 7]]
 |-
-|8||Carburetor/Intake||Flat Head Screw driver||Mount the Carburetor/Intake system to the top of the chainsaw. Drive 2 screws into the frame of the chainsaw using a Flathead screw driver.||1 min||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Screen shot 2011-12-04 at 4.40.01 PM.png|center|thumb|200px|Image 35: Assembly Process Step 8]]
+|8||Carburetor/Intake||Flat Head Screw driver||Mount the Carburetor/Intake system to the top of the chainsaw. Drive 2 screws into the frame of the chainsaw using a Flathead screw driver.||1 min||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Screen shot 2011-12-04 at 4.40.01 PM.png|center|thumb|200px|Image 48: Assembly Process Step 8]]
 |-
-|9||Heat Guard||None||Flip chainsaw upside down. Place heat guard on top of the engine bock (refer to image 36).||5-10 secs||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Screen shot 2011-12-04 at 4.42.45 PM.png|center|thumb|200px|Image 36: Assembly Process Step 9]]
+|9||Heat Guard||None||Flip chainsaw upside down. Place heat guard on top of the engine bock (refer to image 36).||5-10 secs||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Screen shot 2011-12-04 at 4.42.45 PM.png|center|thumb|200px|Image 49: Assembly Process Step 9]]
 |-
-|10||Exhaust||Flat Head <br/>Screw Driver||Fasten exhaust on top of heat guard using four screws and a flat head screw driver. (Note: One screw must be screwed on the inside of the exhaust as labeled in image 37)||1-2 min ||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Screen shot 2011-12-04 at 4.45.13 PM.png|center|thumb|200px|Image 37: Assembly Process Step 10]]
+|10||Exhaust||Flat Head <br/>Screw Driver||Fasten exhaust on top of heat guard using four screws and a flat head screw driver. (Note: One screw must be screwed on the inside of the exhaust as labeled in image 37)||1-2 min ||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Screen shot 2011-12-04 at 4.45.13 PM.png|center|thumb|200px|Image 50: Assembly Process Step 10]]
 |-
-|11||Exhaust Cover||Flat Head <br/>Screw Driver||Attach exhaust cover using a flat head screw driver and four screws located on all four corners of the cover.||1-2 min ||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Screen shot 2011-12-04 at 4.50.21 PM.png|center|thumb|200px|Image 38: Assembly Process Step 11]]
+|11||Exhaust Cover||Flat Head <br/>Screw Driver||Attach exhaust cover using a flat head screw driver and four screws located on all four corners of the cover.||1-2 min ||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Screen shot 2011-12-04 at 4.50.21 PM.png|center|thumb|200px|Image 51: Assembly Process Step 11]]
 |-
-|12||Magneto||Flat Head <br/>Screw Driver||Attach the Magneto to the engine block using the flat head screw driver and two screws.  ||1-2 min ||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Screen shot 2011-12-04 at 4.53.37 PM.png|center|thumb|200px|Image 39: Assembly Process Step 12]]
+|12||Magneto||Flat Head <br/>Screw Driver||Attach the Magneto to the engine block using the flat head screw driver and two screws.  ||1-2 min ||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Screen shot 2011-12-04 at 4.53.37 PM.png|center|thumb|200px|Image 52: Assembly Process Step 12]]
 |-
-|13||Spark-Plug||Spark-Plug<br/> Socket Wrench||Screw the spark-plug into its designated hole on the engine block. Fasten tightly using the spark plug socket wrench. ||30-60 secs ||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Picture1.png|center|thumb|200px|Image 40: Assembly Process Step 13]]
+|13||Spark-Plug||Spark-Plug<br/> Socket Wrench||Screw the spark-plug into its designated hole on the engine block. Fasten tightly using the spark plug socket wrench. ||30-60 secs ||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Picture1.png|center|thumb|200px|Image 53: Assembly Process Step 13]]
 |-
-|14||Metal Spacer||Flat head<br/> Screw Driver||Slide metal spacer over center shaft and two bolts as seen in image 41. Fasten spacer using the flat head screw driver and two screws.||1-2 min ||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Screen shot 2011-12-04 at 5.01.52 PM.png|center|thumb|200px|Image 41: Assembly Process Step 14]]
+|14||Metal Spacer||Flat head<br/> Screw Driver||Slide metal spacer over center shaft and two bolts as seen in image 41. Fasten spacer using the flat head screw driver and two screws.||1-2 min ||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Screen shot 2011-12-04 at 5.01.52 PM.png|center|thumb|200px|Image 54: Assembly Process Step 14]]
 |-
-|15||Sprocket||None||Slide washer on the center shaft, then proceed to slide the sprocket on the center shaft, same side as the muffler. ||30-60 secs ||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Screen shot 2011-12-04 at 5.05.14 PM.png|center|thumb|200px|Image 42: Assembly Process Step 15]]
+|15||Sprocket||None||Slide washer on the center shaft, then proceed to slide the sprocket on the center shaft, same side as the muffler. ||30-60 secs ||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Screen shot 2011-12-04 at 5.05.14 PM.png|center|thumb|200px|Image 55: Assembly Process Step 15]]
 |-
-|16||Clutch||Vise Grips||Slide the clutch on the center shaft, which should fit right inside sprocket.To fasten, secure opposite side of center shaft with the vise grips and turn clutch COUNTERCLOCKWISE.||4-7 min ||[[File:Screen shot 2011-12-04 at 6.43.48 PM.png|center||200px]]||[[File:Screen shot 2011-12-04 at 5.07.33 PM.png|center|thumb|200px|Image 43: Assembly Process Step 16]]
+|16||Clutch||Vise Grips||Slide the clutch on the center shaft, which should fit right inside sprocket.To fasten, secure opposite side of center shaft with the vise grips and turn clutch COUNTERCLOCKWISE.||4-7 min ||[[File:Screen shot 2011-12-04 at 6.43.48 PM.png|center||200px]]||[[File:Screen shot 2011-12-04 at 5.07.33 PM.png|center|thumb|200px|Image 56: Assembly Process Step 16]]
 |-
-|17||Engine Guard/ On-Off Switch||Flat Head <br/>Screw Driver<br/>Adjustable wrench.||Take the threaded on/off switch and fit into Engine guard (slot that says on/off). Fasten it with a nut and adjustable wrench. Now fasten engine guard to casing with screws. Note: Before engine guard is fully fastened, make sure you connect the spark plug to the magneto, and the wire is inside of the engine guard.||2-3 mins ||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Screen shot 2011-12-04 at 6.24.03 PM.png|center|thumb|200px|Image 44: Assembly Process Step 17]]
+|17||Engine Guard/ On-Off Switch||Flat Head <br/>Screw Driver<br/>Adjustable wrench.||Take the threaded on/off switch and fit into Engine guard (slot that says on/off). Fasten it with a nut and adjustable wrench. Now fasten engine guard to casing with screws. Note: Before engine guard is fully fastened, make sure you connect the spark plug to the magneto, and the wire is inside of the engine guard.||2-3 mins ||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Screen shot 2011-12-04 at 6.24.03 PM.png|center|thumb|200px|Image 57: Assembly Process Step 17]]
 |-
-|18||Fly Wheel||Adjustable wrench.||Slide Flywheel onto the center shaft opposite of the clutch. Secure the flywheel using an adjustable wrench, and a nut. ||30-60 secs ||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Screen shot 2011-12-04 at 6.27.10 PM.png|center|thumb|200px|Image 45: Assembly Process Step 18]]
+|18||Fly Wheel||Adjustable wrench.||Slide Flywheel onto the center shaft opposite of the clutch. Secure the flywheel using an adjustable wrench, and a nut. ||30-60 secs ||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Screen shot 2011-12-04 at 6.27.10 PM.png|center|thumb|200px|Image 58: Assembly Process Step 18]]
 |-
-|19||Fly Wheel Cover||Flat Head <br/>Screw Driver||Mount the flywheel cover to the main casing over the flywheel. Secure using a flat head screw driver and 4 screws.  ||1-2 mins ||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Screen shot 2011-12-05 at 11.53.26 AM.png|center|thumb|200px|Image 46: Assembly Process Step 19]]
+|19||Fly Wheel Cover||Flat Head <br/>Screw Driver||Mount the flywheel cover to the main casing over the flywheel. Secure using a flat head screw driver and 4 screws.  ||1-2 mins ||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Screen shot 2011-12-05 at 11.53.26 AM.png|center|thumb|200px|Image 59: Assembly Process Step 19]]
 |-
-|20||Handle Bar||Flat Head <br/>Screw Driver||Place the handle bar in its designated groove located on the bottom of the chainsaws frame. Secure using a flat head screw driver and three screws. ||1-2 mins ||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Screen shot 2011-12-05 at 11.58.26 AM.png|center|thumb|200px|Image 47: Assembly Process Step 20]]
+|20||Handle Bar||Flat Head <br/>Screw Driver||Place the handle bar in its designated groove located on the bottom of the chainsaws frame. Secure using a flat head screw driver and three screws. ||1-2 mins ||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Screen shot 2011-12-05 at 11.58.26 AM.png|center|thumb|200px|Image 60: Assembly Process Step 20]]
 |-
-|21||Chain Bar||None||Mount the chain bar as seen in image 48||10-20 secs ||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Screen shot 2011-12-04 at 6.36.26 PM.png|center|thumb|200px|Image 48: Assembly Process Step 21]]
+|21||Chain Bar||None||Mount the chain bar as seen in image 48||10-20 secs ||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Screen shot 2011-12-04 at 6.36.26 PM.png|center|thumb|200px|Image 61: Assembly Process Step 21]]
 |-
-|22||Clutch Cover||Adjustable Wrench||Mount the clutch cover over the clutch. Secure using an adjustable wrench and two nuts.||1-2 mins ||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Screen shot 2011-12-04 at 6.41.23 PM.png|center|thumb|200px|Image 49: Assembly Process Step 22]]
+|22||Clutch Cover||Adjustable Wrench||Mount the clutch cover over the clutch. Secure using an adjustable wrench and two nuts.||1-2 mins ||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Screen shot 2011-12-04 at 6.41.23 PM.png|center|thumb|200px|Image 62: Assembly Process Step 22]]
 |-
-|23||Intake Cover||Flat Head <br/>Screw Driver||Place the intake cover over the carburetor/intake system. To fasten apply downward pressure on center bolt and turn once.||20-30 secs ||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Screen shot 2011-12-05 at 11.45.53 AM.png|center|thumb|200px|Image 50: Assembly Process Step 23]]
+|23||Intake Cover||Flat Head <br/>Screw Driver||Place the intake cover over the carburetor/intake system. To fasten apply downward pressure on center bolt and turn once.||20-30 secs ||[[File:Screen shot 2011-12-04 at 6.43.33 PM.png|center||200px]]||[[File:Screen shot 2011-12-05 at 11.45.53 AM.png|center|thumb|200px|Image 63: Assembly Process Step 23]]
 |}

@@ Line 1,287: / Line 1,287: @@
 One design revision that we propose is to make all the outer casings, such as the flywheel cover, clutch cover, and engine guards, out of plastic.  With the product being made in the 1970s, using and making plastic wasn’t very popular, easy or cost-efficient.  Now that technology is much more advanced, and there are processes such as injection molding, using plastic for the outer casings would be much easier to make and much more economical.  Also this would make the overall weight of the chainsaw much lighter and easier to handle for the consumer.<br/>
 '''Proposed Change'''
-[[File:Screen shot 2011-12-04 at 8.14.54 PM.png|center|thumb|200px|Image 28: Proposed Chainsaw Design]]
+[[File:Screen shot 2011-12-04 at 8.14.54 PM.png|center|thumb|200px|Image 37: Proposed Chainsaw Design]]
 A Second design revision that we propose is to add handles that decrease vibration from the engine.  This could be done by separating the handles from the engine by adding springs or rubber bushings or by adding rubber onto the handles themselves.  Also, because our product was made 30 or more years ago rubber, much like plastics as mentioned above, were not easily made during this time.  Making these design revisions will make the chainsaw more comfortable to use for the consumer and will help to prevent any hand, joint injuries do to its use.
 '''Current Handle'''
-[[File:Chainsawhandle.JPG|center|thumb|200px|Image 59: Current handle]]
+[[File:Chainsawhandle.JPG|center|thumb|200px|Image 38: Current handle]]
 '''Proposed Change'''
-[[File:Spring.png|center|thumb|200px|Image 29: Proposed Change]]
+[[File:Spring.png|center|thumb|200px|Image 39: Proposed Change]]
 One Third design revision we propose would be made on the flywheel. It is clear to us that our flywheel is made of aluminum with a magnetic piece located on the side that was implanted during the die casting process. The flywheel has many fan blades on it in order to cool the engine.  Since two of the fan blades on our flywheel have broken off, we propose that the flywheel be made of stainless steel with a high nickel content.  Normally stainless steel is magnetic but since the flywheel has a magnetic piece attached, the material used to make the flywheel cannot be attracted to this magnetic piece. Using stainless steel with a high nickel content will drastically lessen its chances of becoming magnetized. Using stainless steel would cost more to make, but in the long run the part would last longer and the consumer would not have to replace it.
 '''Current Flywheel with Broken Blades'''
-[[File:Screen shot 2011-12-18 at 4.53.19 PM.png|center|thumb|200px|Image 30 : Flywheel]]
+[[File:Screen shot 2011-12-18 at 4.53.19 PM.png|center|thumb|200px|Image 40 : Flywheel]]
 ==Gate 4: Product Explanation==

@@ Line 460: / Line 460: @@
 ====Engine Guard====
-  [[File:IMG 0062.jpg|right|thumb|300px|Image 4: Engine Guard]]
+  [[File:IMG 0062.jpg|right|thumb|300px|Image 16: Engine Guard]]
 <BLOCKQUOTE><blockquote>
 <U>'''Function:'''</U><br/>
@@ Line 501: / Line 501: @@
 ====Main Casing====
-[[File:IMG 1074.JPG|right|thumb|300px|Image 5: Main Casing]]
+[[File:IMG 1074.JPG|right|thumb|300px|Image 17: Main Casing]]
 <BLOCKQUOTE><blockquote>
 <U>'''Function:'''</u><br/>
@@ Line 539: / Line 539: @@
 ====Handle====
-[[File:IMG 2057.JPG|thumb|300px|Image 6:Handle]]
+[[File:IMG 2057.JPG|thumb|300px|Image 18:Handle]]
 <BLOCKQUOTE><blockquote>
@@ Line 578: / Line 578: @@
 ====Chain Bar====
-[[File:IMG 1058.JPG|thumb|300px|Image 7: Chain bar]]
+[[File:IMG 1058.JPG|thumb|300px|Image 19: Chain bar]]
 <BLOCKQUOTE><blockquote>
 <U>'''Function:'''</u><br/>
@@ Line 615: / Line 615: @@
 ====On/Off Switch====
-[[File:IMG 4063.jpg|thumb|300px|Image 8: On/Off Switch]]
+[[File:IMG 4063.jpg|thumb|300px|Image 20: On/Off Switch]]
 <BLOCKQUOTE><blockquote>
 <U>'''Function:'''</u><br/>
@@ Line 645: / Line 645: @@
 ====Spark Plug====
-[[File:IMG 0073.JPG|thumb|right|300px|Image 9: Spark Plug]]
+[[File:IMG 0073.JPG|thumb|right|300px|Image 21: Spark Plug]]
 <BLOCKQUOTE><blockquote>
 <U>'''Function:'''</u><br/>
@@ Line 677: / Line 677: @@
 ====Trigger====
-[[File:IMG 4072.JPG|thumb|right|300px|Image 10: Trigger & connecting rod]]
+[[File:IMG 4072.JPG|thumb|right|300px|Image 22: Trigger & connecting rod]]
 <BLOCKQUOTE><blockquote>
 <U>'''Function:'''</u><br/>
@@ Line 708: / Line 708: @@
 ====Sprocket====
-[[File:IMG 0066.jpg|thumb|right|300px|Image 11: Sprocket]]
+[[File:IMG 0066.jpg|thumb|right|300px|Image 23: Sprocket]]
 <BLOCKQUOTE><blockquote>
 <U>'''Function:'''</u><br/>
@@ Line 741: / Line 741: @@
 ====Metal Spacer====
-[[File:IMG 0068.jpg|thumb|right|300px|Image 12: Metal Spacer]]
+[[File:IMG 0068.jpg|thumb|right|300px|Image 25: Metal Spacer]]
 <BLOCKQUOTE><blockquote>
 <U>'''Function:'''</u><br/>
@@ Line 771: / Line 771: @@
 ====Throttle====
-[[File:IMG 0070.jpg|thumb|right|300px|Image 13: Throttle]]
+[[File:IMG 0070.jpg|thumb|right|300px|Image 26: Throttle]]
 <BLOCKQUOTE><blockquote>
 <U>'''Function:'''</u><br/>
@@ Line 803: / Line 803: @@
 ====Carburetor====
-[[File:IMG_1071.JPG|thumb|right|300px|Image 14: Carburetor]]
+[[File:IMG_1071.JPG|thumb|right|300px|Image 27: Carburetor]]
 <BLOCKQUOTE><blockquote>
 <U>'''Function:'''</u><br/>
@@ Line 837: / Line 837: @@
 ====Magneto====
-[[File:Magneto1.JPG|thumb|right|300px|Image 15: Magneto]]
+[[File:Magneto1.JPG|thumb|right|300px|Image 28: Magneto]]
 <BLOCKQUOTE><blockquote>
 <U>'''Function:'''</u><br/>
@@ Line 869: / Line 869: @@
 ====Crank Shaft====
-[[File:IMG 0077.jpg|thumb|right|300px|Image 16: Crank Shaft]]
+[[File:IMG 0077.jpg|thumb|right|300px|Image 29: Crank Shaft]]
 <BLOCKQUOTE><blockquote>
 <U>'''Function:'''</u><br/>
@@ Line 902: / Line 902: @@
 ====Piston Ring====
-[[File:IMG 78.JPG|thumb|right|300px|Image 17: Piston Ring]]
+[[File:IMG 78.JPG|thumb|right|300px|Image 30: Piston Ring]]
 <BLOCKQUOTE><blockquote>
 <U>'''Function:'''</u><br/>
@@ Line 932: / Line 932: @@
 ====Choke====
-[[File:Choke.JPG|right|thumb|500px|Image 18 : Choke]]
+[[File:Choke.JPG|right|thumb|500px|Image 31 : Choke]]
 <BLOCKQUOTE><blockquote>
@@ Line 964: / Line 964: @@
 ====Flywheel====
-[[File:IMG 7888.JPG|right|thumb|300px|Image 19 : Flywheel]]
+[[File:IMG 7888.JPG|right|thumb|300px|Image 32 : Flywheel]]
 <BLOCKQUOTE><blockquote>
 <U>'''Function:'''</u><br/>
@@ Line 996: / Line 996: @@
 ====Heat Shield====
-[[File:IMG 0065.jpg|right|thumb|300px|Image 20: Heat Shield]]
+[[File:IMG 0065.jpg|right|thumb|300px|Image 33: Heat Shield]]
 <BLOCKQUOTE><blockquote>
 <U>'''Function:'''</u><br/>
@@ Line 1,027: / Line 1,027: @@
 ====Exhaust====
-[[File:Chainsaw Exhaust.jpeg|right|thumb|500px|Image 21: Exhaust]]
+[[File:Chainsaw Exhaust.jpeg|right|thumb|500px|Image 34: Exhaust]]
 <BLOCKQUOTE><blockquote>
 <U>'''Function:'''</u><br/>
@@ Line 1,057: / Line 1,057: @@
 ====Engine Block====
-[[File:IMG 0075.jpg|right|thumb|300px|Image 22: Engine Block]]
+[[File:IMG 0075.jpg|right|thumb|300px|Image 35: Engine Block]]
 <BLOCKQUOTE><blockquote>
 <U>'''Function:'''</u><br/>
@@ Line 1,087: / Line 1,087: @@
 ====Piston====
-[[File:Piston2.JPG|right|thumb|300px|Image 23: Piston]]
+[[File:Piston2.JPG|right|thumb|300px|Image 36: Piston]]
 <BLOCKQUOTE><blockquote>
 <U>'''Function:'''</u><br/>
@@ Line 1,162: / Line 1,162: @@
 The part and assembly solid models can be downloaded by clicking the following link: [[Media:Group17 2011 solidmodeling.zip]]
 ===Engineering Analysis===

@@ Line 419: / Line 419: @@
 ====Air Filter Cover====
-[[File:IMG 0056.jpg|right|thumb|300px|Image 3: Air Filter Cover]]
+[[File:IMG 0056.jpg|right|thumb|300px|Image 15: Air Filter Cover]]
 <BLOCKQUOTE><blockquote>
 <U>'''Function:'''</u><br/>

@@ Line 379: / Line 379: @@
 ====Clutch Cover====
-[[File:IMG 1054.jpg|right|thumb|300px|Image 2: Clutch Cover]]
+[[File:IMG 1054.jpg|right|thumb|300px|Image 14: Clutch Cover]]
 <BLOCKQUOTE><blockquote>
 <U>'''Function:'''</u><br/>

@@ Line 339: / Line 339: @@
 ----
 ====Fly Wheel Cover====
-[[File:IMG 0059.jpg|right|thumb|300px|Image 1: Fly Wheel Cover]]
+[[File:IMG 0059.jpg|right|thumb|300px|Image 13: Fly Wheel Cover]]
 <BLOCKQUOTE><blockquote>
 <U>'''Function:'''</u><br/>