65 Tiger Cub Motorcycle

FRS 106, Michael Littman – Spring 2016

Feb 25th (Day 8)–Chris

-Last Lab

-Frame: Continued sandblasting the key parts of the frame

-Fasteners: Taught how to drill and thread

-Bottom End: Continued Disassembly

-Clutch: Took apart rotor and continued disassembly

-Top End: Sandblasted the head and cleaned other parts

-Calculating Overall Gear Ratios:

-Bottom, Second, Third, Top

-Engine Top Speed: 6000 RPM

-Ratio: Rear Wheel Speed vs. RPM

-Ex. Rear Wheel Speed = RPM/ Overall Gear Ratio

-Rotor connected to gear clutch basket with chain

-Rotor rotates -> Rotates the Gear a certain fraction -> Rotates the Drive Chain Gear ->   Drives the rear sprocket a certain fraction

-Real Example: Tiger Gear Ratios

-Gearbox:  17 and 54 (tooth)

-Drive Chain Gear: 17

-Rear Sprocket Gear: 54

-Engine: 19 Teeth

-Clutch Basket: 48 Teeth

-Use information to find max speed of the motorcycle (roughly 60 MPH)

 

-Main Shaft and Layshaft

-Main: Goes through engine body

 

-Clutch Basket is Connected to Main Shaft

-Sprocket attached to output gear

 

-Friction

-F= (coefficient of Friction) x (N: Normal Force)

-Coefficient for Asphalt = 1.0

-Force= Weight of Bike + Weight of the Rider/ 2 (wheels)

-Downward Force = 200 Pounds x 1 = 200 pounds of shear force

-F= MA

-A= 1/2G (Due to 2 Wheels): Find length to get to 60 MPH

-Torque= Length x Force

-200 Ft*lbs till engine slips -> Divide by Gear Ratio = Torque of Rotor

-Tension in Chain = Torque of Rotor/ Radius of Rotor

 

-Gear Box Ratio:

-Drive Chain Sprocket Gear Relative to Gear Clutch Basket Rotation

 

Zen Precept Discussion

Chapter 7

Motorcycle References:

-Left Exhaust Pip Blue Coloring: Engine is Running Hot; Chrome turns blue when hot

-Metal Gas Tank -> Engine Making Sounds

-Engine Being Warm -> Engine Pinging: Air is heated and explodes on its own due to compression: No need of spark plug

-Chain Lubricant: Yield and Motor Oil: Penetrating oil for rust and dirt: Motor Oil: Doesn’t evaporate

-Piston, Wheels, and Gears: Moving in Coordination with each other

-System of parts connected

 

-Key Ideas:

-Phaedrus: Electric Shock Therapy -> New Personality

-Has Never Met Phaedrus: Phaedrus was very unique, intellegent

-Handful of Sand: Knife Cutting through the façade of reality

 

Chapter 8

-Motorcycle References

-Adjusting the Engine: Tuning the engine to get into specs

-Lose Tappet: Need the engine to be cold due to the hot metal expanding

-Specs set when the engine is cold

-Porcelain in Plug:

-To much gas, not enough air:

-Color of Spark Plug Indicates if the combo is lean, rich, or optimal

 

Key Ideas

-Individuals in a System are not responsible for the outcome or status quo

-Patterns and Underlying Culture determine structures and systems

-Systemic Problems arise from the underlying culture