Reading Assignment for Next Class (Tuesday 3-3)
First half of Ch. 4 in Shop Class as Soul Craft, to page 95
Summary of Last Lab:
- Cleaned and shined the rims
- clutch and transmission – cleaned and searched eBay
- sandblasted the frame – still one big piece left
- top end- sandblasted, cleaned and disassembled the carburetor (figured out what we have and don’t have)
- cleaned the distributor
- bottom end threaded a sheet of metal and MK cleaned the oil pump
Class Conversation:
Book Conversation:
Ch. 9 – 105, the real purpose of scientific method (humbling experience, tinker with things)
What do you think of this?
Why is he even bringing up scientific method?
We only resort to scientific method if you are stuck
Inductive vs. Deductive Reasoning
- Inductive – from small problems and experience to figure out what is wrong
- Deductive – based on knowledge of how it works you figure out what is going on
Terrier:
Ride LA hills with it!
Lightweight!
Brakes stop really well – front better than the back because of “dive in” more force pushing down on front wheels
Why are there so many plates in the clutch?
- Allows you to get more torque before it slips
- Not much compression in spring but still have enough torque to slip
Turner:
Why overhead valve?
smaller engine cheaper and lighter
2 stroke vs. 4 stroke
- 2 stroke sounds funny, more power, less efficient
Square Boar
- other ones were bigger in the stroke
- more compact
Single casing for engine and gear box
- more compact as well
Materials
- nickel chrome case hardened steel connecting rod on one side and the other side is cast iron
Oil pumps
- plunger, piston and cylinder
- chose it because it is self-priming!
- less likely to fail
- gear type, two gears squeezes fluid through
In Lab:
- Many teams did a lot of cleaning and sandblasting.
- More shopping online.
L.R