56 Terrier Motorcycle

FRS 106, Michael Littman – Spring 2014

Assignment: Chapter 8 Notes of Shop Class as Soul craft:

The concluding Remarks section major points:

Striving to achieve excellence via intrinsic motivation, being wrong teaches you, the large failures of the education process, and accepting responsibility for your failures.

Example in the book: Receiving a 10/10 on her routine, Nadia Comaneci, was actually just concerned with her own personal performance, and didn’t look at the scorecards. She had intrinsic (desire to do for the love of it) motivation instead of exterior motivation (Scoreboard).

There is a sense of community is built when all work together in machine shop, as they are all motivated by a common goal. The Chinese worker vs BMW worker, similar to the pride associated with building for community vs just building for the sake of building. Another example: Recession era bankers throwing out loans left and right, without looking at the human value, nor consequences. They were motivated exteriorly. Also the children in preschool anecdote, stickers as encouragement, vs telling them to do what they want. The kids that were intrinsically motivated produced higher quality work.

Persig is about motorcycles, philosophy, and (the big one) Quality, and its intricacies.

What is Shop class’ message discussion:

References page 189, the speed shop, and choosing a class that you like that includes a personal connection to your community. When its a hobby, you do it when you want, when its a job you’re forced to produce.

Final Chapter:

The special appeal towards trades. The community of those who desire to know, stated by Aristotle, because of the natural human curiosity.

Bombay—-solidarity, and the aristocratic ethos.

Pg 201 and Pg 202: taking pride in oneself, leads to someone changing their mental image of others.

Reference to crushing egos of kids and teens before they can run the country. The Carpenter faces the fact of his level, and the electrician must answer the question of whether the lights are on.

Shopcraft as Soulcraft is a terrible title and less well received. Persig was a classic. Persig kindof goes all over the place, but is classic philosophy, whereas Crawford is more concrete and more of a Point of View.


Directly to the shop this upcoming tuesday!

Final Presentations Due next thursday!!!!

If in small group; one small presentation. If in big group break up into small ones and then do small presentations and professor Littman will disappear for an hour tuesday.

Deans Date we ride!

Thursday Lab Group reports:

Bottom End:

Finished closing the engine case with extended cover.

Top end:

Installed Push rods built extender for push rod cylinder cover.


Worked on wiring harness and soldering.


Installed fenders via attachments to the hub and axel.

By MBlanz

Assignment: Chapter 7 in Shop Class as Soul craft

Firefighters and their instinctual knowledge.

“[Practical know how] can’t be downloaded, it can only be lived.” (p 162)

The references to Socrates

Learning through doing/use (p 164) (but as Littman says, some skill and intelligence is needed, thinking and doing combined)

Tacit knowledge and knowing what to do in a situation (p 166 / 168 / 172)

Theoretical vs practical

Ohms law V=IR, R = resistance, there’s always gonna be resistance.

Theres also no universal solution. And that R as a concept is theoretical.

Mechanics is often diagnostic

*Electrical connections need to be tightdry, and clean.

Advanced chess players are better at noticing patterns than beginners

DMM= digital multimeter, The digital had the advantage in that it had a more accurate reading due to its higher amount of sig figs, whereas the analog needle version is less random

Wullying (a sound a motorcycle makes), and lapping (taking the valve and twisting it with the grinding complex to make it fit better).

Top end did this, they ground and matched the valves in their seats.

Page 172 has cylinder honing (Puts scratches on the cylinder so oil can flow). 

Heidigger dude followed Kant’s reasoning.

Knowing how (Guy building the thing) vs knowing that (guy who writes the manual).

It does mention placing the spokes on the wheels.

Tuesday Lab Group Reports:

Bottom End and Clutch:

Continued Assembling the Engine. We had to Glen made a tensioner on the primary chain side, and they’ve gone with a duplex chain, Glen also made a spacer so it could all fit with

Top End:

Made a spacer for push rods and p, top end now bolted on for good…we’ll see,

Frames Forks and Wheels:

Shining the chrome styling badges, and looking for hardware, center stand needs spring  for stand. 


Wiring harness on frame, and wiring on headlamp, found battery online, and speedometer.

Other Notes:

  • Mariana made the gear indicator to be placed in the Nacell, It says Terrier on it.
  • The Chain Guards arrived
  • Oil tank and battery box need to be placed on frame, may need to make brackets for it. Topside of Nacell and headlamp needs to be placed as well.

By MBlanz

Thursday, April 24

Assignment: Chapters 7,8, Concluding Remarks


Care and Quality- One must understand quality to understand care
Sylvia and Jon rejected technology due to the absence of care.
Technology is the goal of art and science, motorcycle embodies this well.
Stuckness is the best possible state to be in. It means you must grow and cant
simply use previous experiences to guide you. The framework for moving past this you must search for quality to find how to move.

Romantic parallel is ugliness. Ugliness in the form of a lack of quality. Ugliness lies in the relationship between the creation and the creator. The answer to Phaedrus’s quandry is that you can’t overlay style style and quality. Style and Quality should be integrated.

Gumption is the abundance of quality. You are ready for whatever comes. Enthusiasm.

Monkeys and Coconuts: you value your freedom more than the rice.

Continued the testing a disassembly of the old motorcycle. Still has issues, tested outside to listen and diagnose.
Put the stator in the housing, and attempting to get rotor in.
Working on attaching headlight to nacelle and finishing up body
finishing up final engine assembly and casing assembly.


Tuesday, April 22

Reading Next 3 chapters in Pirsig


Went over the Crawford book


Manager of a cubicle – manages quality of life
Manager of a machine – manages quality of work

Writing in the abstract strips the best part of a person away, gets rid of thought.
College-  Human capital thinking

College forces us to be unproductive.

It raises thought in a way that allows us to have a college without janitors

College should not revolve itself around abstract thought. It should be more practical in its

College should concern itself with being good at jobs, and skills that apply to the working world, not simply acquiring abstract knowledge.


Teamwork and interactiion is unstable.

IBM- “I’ve been moved” keepind a dynamic workplace is a successful strategy to manage a team.

But teamwork is inherently unstable.


Took apart old motorcycle for Glenn to take to the senior dinner. Took the engine apart after diagnosing it was the head gasket that had failed. This was gathered from extremely loud noises coming from the Gasket. The engine still fails at high RPMs probably due to an electrical or fuel issue. Sealed the two inner covers with gasket compound. Eliza and Emma started the badges, cleaned and painted them. Spray painted silver with black lettering.Nigel and Bear assembled the push robs. The outer tube was too short to fit. To fix this we must restore the old one or extend the new one.


Thursday, April 10th

Last time:

Frame, Forks and Wheels

  • Gas tank was primed primed
  • Nacelle was painted, sanded
  • Battery casing was sandblasted, primed
  • Fitted tire, tubing into the rim
  • Front tire is soft and it got pinched, so need to replace inner tube
  • Trued wheels using offset tool
  • Needed to figure out how far offset should be from the rim.
  • Nacelle coming along, could still use some work.  Need to wet sand the lower nacelle.

Bottom end

  • Wet-sanded the engine case
  • Got everything ready for assembly.
  • Did a final clean on all remaining parts.
  • Put the studs in in.


  • Found electrical harness and began labeling it.
  • made sure it was set up right – wire lengths, etc are very important.

Top end

  • Sanded, painted parts with high-heat silver paint.

CH 20/21 in Zen

There wan’t really anything about motorcycles in either chapter.


Rockslide -They were hiking through the mountains.  He had a bad feeling about where they were hiking, and was nervous a rockslide would occur.  This is symbolic to his concern about where his thoughts were taking him, as he was worried that he might go crazy again, just as Phaedrus did.  He was taking a different path through the “high mountains” of thought than Phaedrus.

Romantic Quality – focused entirely on the present

Classic Quality – takes into account the the present, past, and future.

Some notes on Quality form the chapter:

  • Metaphysics only good if improves everyday life.  Otherwise it is useless.
  • Reality is the now – always the moment of vision.  Quality exists in this moment.
  • Quality is the source of everything.

Other philosophers he looks at:

Hagel – the difference between the metaphysical and the mystical.

Tao Che Ching: Quality is all pervading, and cannot be defined.

Ch. 21

-Discusses the connection between Religion, Art, and Science, and how they all relate to quality.

-Science is not “value-free”.


Last Session…

Today we drove the model T!!!

Bottom end – We continued to prepare everything for the final rebuild of the engine.  We finished cleaning parts, made sure we had everything, an preemptively put all the transmission parts in place to ensure that they were all there and in place.  We located two missing washers that were not listed in any of the parts diagrams.  We also removed the bearing from the case, cleaned it, and replaced the seal.

Top end   Last time they took inventory and made sure that they had everything they needed.  They’re pretty close to being done.  They are waiting to fix an old oil line.  The barrel needs to be painted with high-heat silver paint.  The oil pathways must all be taped off to do this.

Electrical – Last time the found the old wiring harness, and located other misc. electrical parts.  They also found a new wiring harness that they will use.

Frame, forks and wheels – Last time they worked on truing and tuning the wheel.  They lubricated the spoke threads when assembling it, and used wheel offset tool.

They also assembled the front and rear brake assemblies.  They need to cut the power coat in some places in order to get it to fit.  They also had to to this to get the rear sprocket on the wheel.  They also wetsanded the nacelle, and prepared it for painting.  They will also sandbox battery box and prime it to prepare it for pain.

We then split up and all got a chance to drive the model T!

Model T Facts/Quirks:

It isn’t a traditional stick shift.  It has three pedals, but not gas, brake, and clutch, like a modern manual transmission car – the right pedal is the brake, the middle is for reverse, and the left pedal is forward.  The throttle is a lever on the steering column on the right, and the spark advance on the left.

It doesn’t have power steering, which took a little getting used to by those of us who haven’t driven old cars before.

It doesn’t have any pumps for the oil, fuel, or water used in conjunction with the radiator to cool the engine.  The gas tank is under the seat, and therefore above the engine, and simply uses gravity to bring the gasoline into the engine.  However, if you are going up a steep hill, the engine will not get oil.  The trick is to go up in reverse so that the gas tank is always above the engine.  LOL.

It has a motometer, which is a thermometer on the radiator and indicates the temperature of the water in the radiator.

This car had an electric starter motor, but some of the older ones had to be started by turning over the engine by hand, which resulted in many, many broken wrists.

It has a four-cylinder engine that makes around 25hp, and has a top speed of about 40 mph.

What I personally took away from the experience:  

Sure, it was very loud, smelly, and vibrated a lot, the steering was vague and very heavy, the ride was rough, and it was not very practical, reliable, fast, comfortable, well-equipped, powerful, safe, aerodynamic, good for the environment, or any of the other “positive” qualities consumers look for in modern cars.

But despite all this, the T was undoubtably the best car I have ever driven (not that I have driven very many).  The sheer simplicity of the whole thing was remarkable – nearly everything mechanical system was visible or very easily accessible.  It was a machine that wasn’t ashamed of itself – it didn’t hide itself behind mufflers, layers of sound- and vibration-deadening, and unnecessary plastic covers in the engine bay that seem to say “don’t even think about trying to fix it yourself” to their owners, like modern cars have.  On the contrary, it seemed to teach you about all the systems as you used it.  You can actually hear and directly feel the engine and all the systems, so one could tell when something doesn’t quite sound right or if you are putting too much strain on the parts.  Furthermore, every system seemed so simple, it is almost hard to imagine how something could break – everything from the engine to the suspension and steering seemed to be a very simple set of tangible logic.  So despite  it’s somewhat  primitive nature, I believe the Model T is a  brilliant little car.


Lab Updates

Lab Updates:

  • Buttom End: Assembled the transmission system, cleaned crankshaft and the flywheel, printed the second and last gasket.
  • Top End: Painted the triple-tree.
  • Frames, Forks, and Wheels: Put the spokes into the rear wheel. They tuned the spokes by hitting the spokes with a wrench and listening to the sound. Also, if the wheel wobbles when it spins, you need to adjust it by loosening the spokes on one side and tightening them on the other.

Reading Discussion:

  • Esthetics: What is meant by beautiful?
  • Hip vs Square in the 1960’s.
  • By keeping terms undefined, you are open to the possibility of versatile and broad definitions. In the book, Phaedrus refuses to define Quality, but still attempts to prove its existence.
  • There is an inherent problem in detecting quality, and determining whether it is subjective or objective.
  • If Quality Is totally subjective, then art becomes entirely shallow, without any deeper meaning other than an esthetic luxury.
  • According to Pirsig, Quality is the event between the subject and the object when they recognize each other.
  • However, Quality is also defined by its context (cultural, periodical, etc).

Notes by MGM

Tuesday, April 1

Visitor: Professor Ju

Mechanical & Aerospace Engineer

  • Combustion and propulsion.
  • Biofuels & synthetic fuels for engine design.

Readings Summary:

Set of calculations about the amount of energy per explosion in an engine.

About emissions in a Toyota.

Air / fuel ratio.

  • The industry uses 14.7 ratio of air to fuel. The reason it isn’t exactly 15 is because fuel has many different components.
  • For gasoline engine, you want the amount of oxygen and fuel to be stoichiometric. You don’t want any leftover water.
  • Rocket engine fuel is rich, while automobile fuel is more lean. Because the temperature is very high, so they inject less fuel so that the total temperature is not as high. If you put too much fuel, the temperature will be too high.
  • Nitrogen Oxide (NO) reacts with ozone, so it becomes NO2 + O2, and creates smog.
  • 70% of cars in Europe use Diesel. The diesel in the USA is more expensive than gasoline. Diesel is more efficient than gasoline. The emission standard tolerates more emissions in the USA.


  • In diesel, you compress the air to a very high pressure and temperature and then inject the fuel, expecting the turbulence of the flow to mix both components.

Compression Ratio

What is compression ratio?

  • When you have a piston going down, then you compress it, there’s residue volume. So the ratio is the volume being compressed. Also called the pressure ratio in gas turbines. In a gasoline engine, it’s a volume ratio.

PV = nRT

  • The higher the pressure, the more capability to do the work, the higher the efficiency for expansion.

Rule of Thumb:

  • Engine efficiency    = Work / Heat Content (Fuel)      or     = 1 – [1/r^gamma]    (Specific hea)
  • You want to be as close to 1 as possible.



  • A premature combustion. When the piston is still coming up in the compression stroke, the gas explodes and then it wants to push the crankshaft the other way.
  • The higher the compression ratio, the more this is a problem.
  • Ignition occurs by itself because of high temperature and high pressure, even before the flame. This problem is called pre-ignition and can damage the piston.

Octane number

What does 87 mean?

  • It is the percentage of octane vs. heptane. The higher the octane number, this means that there is more difficult to ignite.
  • Numbers available: R – 87, P – 90, S – 93


  • Ethanol is thrown into the mix to raise the octane number. However, it is no longer used because it was found out of its high pollution consequences. Ten percent of the gasoline produced in the USA is ethanol.
  • The main problem with using ethanol is the friction inside the engine, because ethanol dissolves the lubricant.


  • You extract CH2O from this. This is toxic.

Valve Overlap

  • The valve is in the intake manifold. Valve overlap is essentially that, at a certain RPM, you have a pulse, and pulse keeps going, and there’s a vacuum (negative pressure) behind it. Because of this pressure, you get more fuel being sucked into the engine, which increases the efficiency of the engine. This is the main reason valve overlap is used in engine design.

Motocross Race:

  • Two-Cycle: There’s no valves, it just goes up and down. The exhaust is open. Usually, it pulls the air into the engine, compresses, and pushes out, and this is all happening at the same time. Used to be normal during the 40’s and slow. As the pulse comes out of the exhaust at a very high speed, there is this cone which expands and then contracts. This pulse pulls all the air and fuel from crankcase into the exhaust pipe and at the same time brings in the new components. Have a buzzing, bee-like sound. They are very power efficient.
  • Downside: You get a strict range of RPM. Their emissions are also very bad.
  • Yamaha: Made it clean by direct injection. Cost more than $10, so it wasn’t made.


Homework for Thursday: Next two chapters in the Pirsig book. (Chapters 18 & 19)


  • We need to work on the brakes and paint.
  • The bottom end needs to start working on putting the engine back together.
  • The top end will be deputized to help the frames, forks, and wheels groups.
  • Electrical will start working on the harness and make sure the distributor has all the things it needs.

Notes by MGM

Class 16


  •       Bottom End: getting ready to put together – glen made threaded rod to connect cable that connects gear indicator on the necel to quadrant plate(guides for forks in the transmission), shifting correctly, reassembled engine in progress
  •       Electrical: Saudered gold pins, worked on getting rotor and stator fitting in casing
  •       Top End: finished sandblasting battery box, primed it
  •       FFW: found all parts for triple tree, assemebled it – essentially ball bearing, found parts for mud guard, found parts for handlebars, ordered throttle, cleaned double chain, found all parts for plunger suspension
  •       Mariana: coped a gauge and updating it with appropriate labels the right font for the terrier
  •       Glen made new set of cups for plunger suspension


  •       Chap 22

o    Talks about facts and hypotheses – Euclidean geometry – mathematics is suddenly uncertain. If geometry is wrong (cornerstone of logic) – nothing is certain. Relates it to quality. Infinite number of hypotheses -> infinite number of facts. Hierarchy of facts – more general fact is worth more. Relates to motorcycle: beauty – well integrated and minimal, like relationship between facts. Phaedrus doesn’t seem insane when compared with French philosopher – parallel to this thinker. Absolute space and time: meet in relativity – depends on observer. Absolute substance: mass and energy are interchangeable. Euclidean and non-Euclidean geometry – curvature of space – bending of light due to gravity. Quality subjective vs objective – time factors into quality.

  •       Chap 23

o    Dream of being behind glass door

  •   Realizes he’s in a coffin

o    Related to duality in personality due to shock therapy?

  •   Partially dead

Next scribe: Manbir

Class 15

Reading for Thursday: Zen and the Art of Motorcycle Maintenance chap. 22 + 23

Reading for next Tuesday: Shop Class as Soulcraft chap. 6

lab updates:

  • Bottom End: Transmission main shaft seal added on inner primary cover, ready to be assembled, cable found that connects quadrant plate to indicator on the necel, counted and labeled teeth on gearsand documented them, cleaned more parts
  • Frames Forks and Wheels: Front wheel re-assembled due to pinched tube, wet sanded and painted necel, gas tank, oil tank, battery case, cleaned drive chain
  • Electrical: Soldered contacts for harness, continue soldering with soldering iron, work on brake lights and points
  • Top End : Sandblasted battery box, shake hose to unclog and speed up sandblasting, one of holes on cylinder head didn’t fit on bore, drilled it out to fit

Class 14

Bill Becker Talk

Lab Updates:
Bottom End: Cleaned parts, tested the threads on the engine case, finished the gasket, flywheel: It ended up being off.
Top End: finished cutting the valves, ready to assemble the top end.
Frames, forks and wheels: Priming the triple tree, found all the parts for the wheels, cleaned the bearings out. Finished sanding the nacelle.
Electrical: looked at the rectifier and the switch.
Who is he?
Retired architect now builds motorcycles. Recently finished 1961 ducati
His talk:
– Principals of engineering
– Motorcycle wheel involves a lot of different principles
– 1. Physics: Mass related to the weight of objects. Property called mass and we can define how objects behave according to their mass.
– Weight is not your friend because you are fighting the mass of the objects.
– Materials that are involved in the wheel:
  • o 11 materials in the wheel.
  • o Picking materials is like picking an Olympic team. Diversity.
– Properties to be concerned with when it comes to materials:
  • o Strength, flexibility, weight hardness and softness, workability, conductivity, cost, availability
– The hub:
  • o Made out of aluminum.
  • o Properties: it is lighter than steel, cheap, castability, doesn’t rust.
– The spokes:
  • o Made out of stainless steal.
  • o Properties: Does not rust. Steal is a very strong material.
– Cast Iron:
  • o Properties: pores, stays lubricated, cylinder head made out of cast iron because it is a very good conductor of heat
– Rim made out mild steal
– Tire made out of rubber:
  • o it is flexible, gas inside of inner tube in the tire. Inside tire is polyester
  • o Steel cable is casted into the rubber.
  • o Ball bearings are steel.
Strength of materials:
– Basic forces acting on structural elements
  • o Compression (squeezing)
  • o Tension (stretching)
  • o Bending (resolution of compression and tension)
  • o Shear (cutting/tearing force)
– Forces acting on a wheel
  • o Gravity
  • o Impact
  • o Acceleration
  • o decel/breaking
  • o Turning forces
– When you push down on the axel top spokes are getting stretched and bottom spokes are getting squeezed
– Spoke is only good at being stretched, very strong
Next Weeks Reading Assignment:
Combustion chemistry and tiger cub calculations documents found in the data section of our webpage
Next scribe: Mariana
Hilary Lloyd

Class 13

No reading assignment for Thursday

Lab Updates:
– Frames, Forks and Wheels: Painting the frames, attached springs to the seat of the motorcycle, Continued to sand the nacelle.
– Bottom end: cleaned parts, checked the crankshaft, checked to see if fly wheel was assembled correctly.
– Electrical: Finding and organizing missing parts.
– Top end: finished the uploading pictures to website
– Lesson: Make sure you clean up!
In Class Discussion:
Zen and Art ch. 16
– Mountains of spirit à metaphor for people being able to pick their way.
– Discussing Quality and how the narrator is trying to piece together from Phaedrus past teaching notes but he can only come up with aspects of quality not an actual definition.
– Phases of Quality:
  • o First phase had an idea but didn’t think about it that much.
  • o Second phase: systematic rigid statements of what quality is.

– Imitation: Schools teach you to imitate. Prescription to do well in many courses.

  • o This is how you get ahead but he also argues to go beyond that.
  • o Pushing his students to write about original ideas. Ex. The girl who wrote about the individual opera bricks.
– Absence of grades/marks: Experiment on his class.
  • o Upset a lot of students because didn’t have a tangible goal of where they were in the class. But it improved the participation within the class and made the students more engaged in the material
  • o Wants the point of school to be about learning not just about the marks. Grade motivated vs. knowledge motivated
– Classes interpretations of a no grading system:
  • o Author is telling a story to make a point. Much more complicated about why people are in school such as for arts, drama, etc.
  • o His example is one-dimensional. People go to school and end up doing stuff in life that is unrelated to their degree.
  • o You can learn what you don’t want to do at university
  • o If you don’t care in school about actually learning you want care about your job
  • o Mule vs. the freeman
  • o Who’s to blame people for living a simple life, to provide food for their family etc.
– He goes back to the idea of withholding grades didn’t have scientific value because he couldn’t control all the variables. It was unclear what it showed you.
– If grades were removed the class is forced to wonder what it is really learning. (pg. 200)
  • What is our goal?
    • o To build a motorcycle, to restore it
    • o Restore it so it reaches a certain level of quality. It should look nice and it should run well
    • o Is it ok to use replacement parts? Or should we be true to the original design?
Ch. 17
– Narrator and Chris climbing mountain
– Narrator wants a definition of quality. Asks his class.
  • o Wants his students to contest him with a definition but they never do.
  • o He tricks them into believing that they do know what quality is. Ex. the essays and which had more quality.
  • o tricks them to the point where they don’t have to question what quality is anymore
– Defines quality as aspects of quality.
  • o Unity, if you want unity have an outline
  • o Authority of an argument use footnotes.
  • o Economy means enough to make your case but not too much to bore your reader. Less is more.
– What makes Chris’s way of climbing inferior. Don’t climb the mountain just to prove how big you’re. To him the quality exists along the trail not at the top. It’s an internal thing.
Hilary Lloyd

Class 12

Reading Assignment: Zen and the Art of Motorcycle Maintenance : Chapters 16 and 17

In-Class Discussion

Shop Class as Soulcraft – Chapter 5: p115 to end of p120

  • A customer wants to ride his Honda Magna again after letting it sit for two years. Narrator tries to intimidate the owner because he does not want to put that much work into it if the customer is not going to use it.
  • Relates to the concept mentioned in Pirsig’s book of being attached to an object, and the rationality behind it.
  • Motorcycles have their own quirks-once you learn these quirks, you can figure out how to fix them more easily.


  • Fork seals: forks are holding the front wheel and are fueled with oil. Seals are needed to prevent oil loss.
  • Hydraulic line: A flexible tube used for shock, suspension, and most commonly for brakes and the clutch.
  • Narrator uses athlete foot powder to solve the substantial amount of oil leakage. Puts the powder all over the engine casing and can see where the oil streaks/residue are.
  • Many problems with the bike: the clutch will not disengage; there is air in the hydraulic lines which occurs when the seals are not completely tightened. Opening the far end of the line and letting the fluid and the air flow out of will fix this issue. But then it would be wise to question how the air got in the line in the first place.
  • Master cylinder and slave cylinder system: Overall an application of force from the pedals to the clamps. Adding a force on the master cylinder will put pressure on the fluid, and the force will travel along to the slave cylinders. The piston will keep being pushed down until it hits the plate and is forgiving of uneven positions.
  • Barrel: Narrator is working to get the valve covers off. Needs to remove one of the engine bolts and drop the engine about a quarter of an inch. Then can pull the barrel off without removing the frame.

Shop Class as Soulcraft – Chapter 5: p120 to p125

  • Takes apart the clutch and the basket and finds goo all over it
  • Takes the seal off of the clutch rod and not all mechanics will do this because it is not necessarily the right thing to do.
  • Mentions Saint Augustine which relates to the Romantic aspect of motorcycle maintenance

Concepts from Last Class

There is a relationship between the power curves for engines and sports.  The power vs speed curve for an electric motor is a parabola (as seen in the picture from the previous class), with the maximum amount of power occurring at half of the no  load speed. The maximum amount of power for the power vs speed curve for muscles is not quite the same. Instead, the maximum amount of power for muscles occur at less than half of the no load speed.

The Hill Curve demonstrates at what rate the muscles will get excited. If you imagine riding a bike up a hill, finding the best gear that will suit your needs directly relates to the power vs speed curve for muscles. Finding that optimum speed also applies to the reason why biking coaches will tell their athletes adjust the bike so that they are going at one revolution per second.

Lab Updates:

Top End: Sandblasted and worked with Glen on grinding and re-seating the valves.

Bottom End: Cleaning parts. Took the Henry Ford engine for a test run. It is a single cylinder engine with one valve. Rather than having a carburetor, it has a tank with a needled valve that dripped gas and a one-way valve for air.

Electrical: Worked on webpage and examined the electrical parts to try and understand better. Could start working on the distributor, how long the wires need to be, and getting all of the parts ready.

Frames, Forks, and Wheels: Worked on the webpage. Finished the gaskets. Sanded the nacelle. Could start looking for the handlebar, levers, grips, throttle, clutch cable, seat, and springs.

Next Scribe: Hilary

Next Cameraman: Ben


Class 11

Reading Assignment: Shop Class as Soulcraft – p115-125

In-Class Discussion

Shop Class as Soulcraft – Chapter 5: p103-109


  • Narrator begins with the story of his life, and how he realized he did not want to be a professor and instead wanted to be an electrician
  • Discussed tearing down a Honda CB360 and rebuilding it as a cafe racer (modifying a bike so that it can run very fast and would race these bikes from bar to bar)

Tools and Parts:

  • Compressor: takes atmospheric pressure and raises it about 100 lbs/in^2
  • Pneumatic Tools: hand tools that run on air motors/turbines
  • Die Grinder: high speed air motors with a shaped stone to grind
  • Impact wrench: high speed air motor that allows user not to over-torque device
  • Cutoff wheel: air motor – high speed spinning discs that can grind away a thin slow without damage
  • Cleaners: different solvents used for different purposes–electrical cleaner, carburetor cleaner, engine degreaser
  • Cutting oil: dry lubrication
  • Moly (molybdenum) grease: can work well under high temperatures
  • Lithium grease: cannot handle high temperatures
  • Antiseize compound: lubrication in aluminum
  • Use oxygen and acetylene tank together to act as a torch
  • Impedance: relates to electrical parts – represents effects of inductive and resistant loads

More Storyline:

  • Narrator’s starter motor would not start so he took it to Fred who is an accomplished mechanic
  • “Liberal” Arts vs. “Servile” Arts goes hand in hand with the Classical vs. Romantic theme

Shop Class as Soulcraft – Chapter 5: p109-115

  • Narrator has his own business fixing motorcycles, and has other people working in the vicinity
  • Some mechanics won’t take on certain projects because of potential complications that are not worth the time and effort.
  • Narrator has a log book that records the time charged for customers and the actual time spent working. Comes to the dilemma of whether or not to charge customers for his mistake.
  • Experiment: Had been told not to spin the bearing as compressed air was being applied but did it anyway and then bearing came apart/exploded
  • Related back to Pirsig: moral issue of “idiot” workers that do a job but do not care about it

In-Class Demonstration

Motor Dynamometer


  • Early 19th century invention designed to measure the power of a steam engine/horse power
  • Measures torque, turning ability, and power that can be produced
  • An electric 12 volt motor that will put force load or torque load on a spinning object; can be slowed down by pulling on the rope
  • Can convert torque curve to power curve by multiplying by the angular velocity



Lab Updates:

  • Top End: Sandblasted head
  • Bottom End: Attached oil pump to block and measured the diameter of each piston and how big the stroke was; calculated, in an ideal environment, how much oil should be going through per cycle
  • Electrical: Worked on webpage, uploaded data and explanation for spark advance
  • Frames, Forks and Wheels: Bondo gas tank, primed fenders, primed the forks, finishing webpage