Group 14 - Product Name Here - Revision history

MAE 277 2011 Group14: /* Product Archaeology */

2011-12-19T19:13:12Z

Product Archaeology

MAE 277 2011 Group14: /* Product Archaeology */

2011-12-19T19:04:11Z

Product Archaeology

MAE 277 2011 Group14: /* Dissection */

2011-12-19T18:59:36Z

Dissection

MAE 277 2011 Group14: /* Coordination Review */

2011-12-19T18:29:49Z

Coordination Review

MAE 277 2011 Group14: /* Dissection */

2011-12-19T06:06:59Z

Dissection

MAE 277 2011 Group14: /* Dissection */

2011-12-19T06:02:12Z

Dissection

MAE 277 2011 Group14: /* Product Archaeology */

2011-12-19T05:58:21Z

Product Archaeology

MAE 277 2011 Group14: /* Product Archaeology */

2011-12-19T01:43:31Z

Product Archaeology

MAE 277 2011 Group14: /* Product Archaeology */

2011-12-19T01:40:25Z

Product Archaeology

MAE 277 2011 Group14: /* Product Archaeology */

2011-12-19T01:32:48Z

Product Archaeology

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 The engine and fuel tank are spaced out on the right side of the frame to keep the hot engine away from the flammable fuel. The weight of these two components is offset on the other side by the batteries, computer and reciever. These subsystems are shown in Figure 2.
 It is easiest to describe the connections between the other subsystems by tracking energy, signal, and mass flows and determining sources. In respect to signals, the “source” doesn’t respond to the production of the signals but rather the central hub for distributing signals throughout the car. The fuel tank is the source of fuel for the car. The Servo (computer/receiver) system is the source of the signals for the car. The intake/exhaust is the source for air for the car.
 The fuel tank is connected to the engine and intake/exhaust by two plastic tubes much like surgical tubes. These tubes allow air to enter the fuel tank and allow fuel to leave.
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 The servo system is connected to the engine via the throttle. The throttle works to send physical signals from the servos to control the engine’s performance. The throttle is also connected to the transmission, but upon dissecting the car it became evident that this connection was only present so that the throttle could rotate around a pin. There is no direct connection between the servos and transmission. The Servo system is also connected to the wheels by rotating joints and arms. The purpose of this connection is to turn the wheels.
-The engine is connected to the servos, intake/exhaust, fuel tank, and transmission. The engine’s connection to the servos is through the throttle as described above. The fuel tank is connected to the intake/exhaust and the fuel tank by tubes. These tubes allow for fuel and air to enter the engine and for excess gases to exit through the exhaust. The engine is connected to the transmission by the drive train. The drive train is a shaft that is rotated by the engine and transfers energy to the transmission through gears.
+The engine is connected to the servos, intake/exhaust, fuel tank, and transmission. The engine’s connection to the servos is through the throttle as described above. The fuel tank is connected to the intake/exhaust and the fuel tank by tubes. These tubes allow for fuel and air to enter the engine and for excess gases to exit through the exhaust. The engine is connected to the transmission by the drive train. The drive train is a shaft that is rotated by the engine and transfers energy to the transmission through gears. The transmission is connected to the engine and the differentials. Energy enters the transmission from the engine through two gears and exits the transmission to the differentials through two rotating shafts. The differentials are connected to each wheel by a “dog bone” shaft which turns the wheels.
-−
 The transmission is connected to the engine and the differentials. Energy enters the transmission from the engine through two gears and exits the transmission to the differentials through two rotating shafts.
-−
 The differentials are connected to each wheel by a “dog bone” shaft which turns the wheels.
-'''Influence of the Four Factors:''' The connections between the subsystems are all universally recognizable. The screws used to connect the subsystems to the frame are all standard Phillips head screws which addresses global concerns of manipulation and customization of the car. The exhaust system theoretically allows for a cleaner combustion process which addresses environmental concerns. The axle and drive shaft connections along with the gearboxes, the chassis and many other parts are made of metal, keeping wear-and-tear to a minimum on the parts that are subjected to the most abuse which addresses economical concerns.
+'''Influence of the Four Factors:''' The connections between the subsystems are all universally recognizable. The screws used to connect the subsystems to the frame are all standard Phillips head screws which addresses global concerns of manipulation and customization of the car. It can be run in dirt and mild rain without stopping due to the enclosed gear boxes and fuel system. As long as the engine still has access to air, the car will run. The axle and drive shaft connections along with the gearboxes, the chassis and many other parts are made of metal, keeping wear-and-tear to a minimum on the parts that are subjected to the most abuse which addresses economical concerns.
 '''Performance Considerations:''' All drive shafts work using ball and socket joints with a pin through the ball allowing it to transfer rotational energy. This allows the drive shafts to continue to function as the car’s suspension changes the level of the tires with changing terrain. Other performance considerations present in the implementation of connections are the gear ratios. A smaller gear on the drive train connects to a larger gear in the transmission which is parallel to smaller gears in the differentials which are connected to larger gears which send rotational energy to the wheels.

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 It is easiest to describe the connections between the other subsystems by tracking energy, signal, and mass flows and determining sources. In respect to signals, the “source” doesn’t respond to the production of the signals but rather the central hub for distributing signals throughout the car. The fuel tank is the source of fuel for the car. The Servo (computer/receiver) system is the source of the signals for the car. The intake/exhaust is the source for air for the car.
-The fuel tank is connected to the engine and intake/exhaust by two plastic tubes much like surgical tubes. These tubes allow for air to enter the fuel tank and for fuel to leave.
+The fuel tank is connected to the engine and intake/exhaust by two plastic tubes much like surgical tubes. These tubes allow air to enter the fuel tank and allow fuel to leave.
 The servo system is connected to the engine via the throttle. The throttle works to send physical signals from the servos to control the engine’s performance. The throttle is also connected to the transmission, but upon dissecting the car it became evident that this connection was only present so that the throttle could rotate around a pin. There is no direct connection between the servos and transmission. The Servo system is also connected to the wheels by rotating joints and arms. The purpose of this connection is to turn the wheels.

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 ===Dissection===
-The dissection of the RC car was performed in two separate processes.  The first was the removal of all of the subsystems from the one another.  This process took about two hours to complete and is detailed below.  The second process was the dissection of the subsystems into their individual components.  This took just over another two hours and is detailed in the linked wiki [[Dissection of Exceed RC Buggy Subsystems]].
+The dissection of the RC car was performed in two separate processes.  The first was the removal of all of the subsystems from the one another.  This process took about two hours to complete and is detailed below.  The second process was the dissection of the subsystems into their individual components.  This also took just over two hours and is detailed in the linked wiki [[Dissection of Exceed RC Buggy Subsystems]].
 The metric which we used to gauge the difficulty of each step is as follows:

← Older revision		Revision as of 18:29, 19 December 2011
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	Looking forward to the last two gates, the biggest obstacle is that we have fall recess in the midst of the time allotted to work on the fourth gate. Our plan is to get as much of the reassembly process done as possible on Saturday the 19th so that when we get back from break we do not have to find a large block of time to finish the work which we will have left to do for the gate. Any work that can be uploaded to the wiki during the break will be in order to cut back on the final time crunch as well.		Looking forward to the last two gates, the biggest obstacle is that we have fall recess in the midst of the time allotted to work on the fourth gate. Our plan is to get as much of the reassembly process done as possible on Saturday the 19th so that when we get back from break we do not have to find a large block of time to finish the work which we will have left to do for the gate. Any work that can be uploaded to the wiki during the break will be in order to cut back on the final time crunch as well.
		+
		+	As problems arise, they will be talked over as a group and if a unanimous decision can not be made, a majority vote will help decide the outcome of any conflicts as long as no one member of the group become target of unfair work.

	===Product Archaeology===		===Product Archaeology===

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 The metric which we used to gauge the difficulty of each step is as follows:
-<br>1 - Fastener is removable with ease
+<br>1 - Fastener is removable with ease, typically with only one hand
-<br>2 - Requires extra force, but still relatively easy to safely remove component
+<br>2 - Requires two hands or extra force, but still relatively easy to safely remove component
 <br>3 - Requires caution to remove properly. May require two people to remove safely
 <br>4 - Not designed to be taken apart by the consumer but can be safely removable with a good deal of effort

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 [[File:Subsystems.jpg|right|thumb|Figure 2: Diagram displaying locations of subsystems]]
 Our product is comprised of eight basic subsystems: The servos (computer/receiver system), engine, fuel tank, intake/exhaust, transmission, differentials (rear and front gear boxes), wheels, and body/ suspension system. The connections between these subsystems have four basic functions: transfer of energy, transfer of signals, transfer of mass, and support.
 Every subsystem is connected to the body/ suspension system. These connections are physical connections implemented by screws and plastic frame pieces.

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 There are exactly 387 components used to create this remote controlled vehicle.  From fasteners, to supports, to larger functional parts, they all play a role in keeping the Hyper Speed RC car together and running smoothly.  A detailed list of all of these components can be found on the page [[Exceed RC Buggy Component summary]]. In depth analysis on five specifics parts can be found on the page [[Exceed RC Buggy Product analysis]]. Auto CAD assembly drawings for the solid model can be found on the page [[Exceed RC Buggy Solid Modeling]].
-In determining the sizes, materials, and placement of all of these components, many important engineering decisions had to be made through analysis.  One specific analysis process which was carried out was to determine the best gear ratios.  [[Maximizing Gear Ratio]] is important due to limited space for gears.  All of the subsystems are tightly knit so this analysis was likely carried out early on in the design so that the other scaled down components could fit together well.
+In determining the sizes, materials, and placement of all of these components, many important engineering decisions had to be made through analysis.  One specific analysis process which was carried out was to determine the best gear ratios.  Maximizing Gear Ratio is important due to limited space for gears.  All of the subsystems are tightly knit so this analysis was likely carried out early on in the design so that the other scaled down components could fit together well. This analysis can be found on the page [[Exceed RC Buggy Engineering Analysis]]
 ===Design Revisions===

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 ===Product Archaeology===
-There are exactly 387 components used to create this remote controlled vehicle.  From fasteners, to supports, to larger functional parts, they all play a role in keeping the Hyper Speed RC car together and running smoothly.  A detailed list of all of these components can be found on the page [[Exceed RC Buggy Component List]]. [[Component Summary]][[Product Analysis]][[Solid Modeling]
+There are exactly 387 components used to create this remote controlled vehicle.  From fasteners, to supports, to larger functional parts, they all play a role in keeping the Hyper Speed RC car together and running smoothly.  A detailed list of all of these components can be found on the page [[Exceed RC Buggy Component summary]]. In depth analysis on five specifics parts can be found on the page [[Exceed RC Buggy Product analysis]]. Auto CAD assembly drawings for the solid model can be found on the page [[Exceed RC Buggy Solid Modeling]].
 In determining the sizes, materials, and placement of all of these components, many important engineering decisions had to be made through analysis.  One specific analysis process which was carried out was to determine the best gear ratios.  [[Maximizing Gear Ratio]] is important due to limited space for gears.  All of the subsystems are tightly knit so this analysis was likely carried out early on in the design so that the other scaled down components could fit together well.