Assigned Reading for Thursday:
- Detonation-energy-updated
- Combustion-chemistry
- My-little-deuce-coupe-new
(Articles can be found in 64 Tiger Cub -> 64 Data)
Began a new section of the website: “Problems”
First major problem to be listed: Crack in the frame
A major crack was discovered after sand-blasting the frame.
The first general solution to this problem is to cut out a section of the frame and weld a new section in, in it’s place (however it can be difficult to align the insert correctly)
Instead Glen opted for the second general solution: Pilot holes were drilled at either end of the crack, a V-groove was drilled along the crack and steel was welded into the groove.
Learned about Magna-flux testing, a method used to find concealed cracks in frames.
Highlights of what was done in lab(March 14th):
General cleaning of screw threading and components.
Valve seats cut and spring constant of old springs measured.
Gasket CAD design was completed and new gasket was cut.
A few washers, screws and the Rotor key were discovered to be missing, but other components were found still screwed into the bottom end of the engine.
Professor Littman reminded us to ensure all galleries are clear.
Discussion on Graded Presentations:
They should:
– be ~15 minutes long
– be Power Point Presentations
– include explanations of the section’s parts and their workings
– include computations relating to power, gear ratios etc (where applicable)
– be completed in class in the weeks before reading period (2 presentations per class)
Prepared for next visiting expert in Combustion: Professor Ju
Wrote a list of questions:
- Please explain the advantages and disadvantages of different gasoline additives and impurities (in particular: leaded and unleaded gasoline/petrol, ethanol, nitro-methane).
- Please explain the significance of high octane rating and high compression rating with regard to engine performance.
- How does a turbo/super charger work?
- What are the major factors affecting fuel efficiency which are taken into consideration when designing motorcycles and other vehicles such as SUVs?
- What is the relationship between the cc’s of an engine cylinder and the possible horsepower of the vehicle? How can one increase the horse power of an engine? How can one decrease the loss in power in transmission?
- Please explain the recent developments in gasoline diesel mixtures resulting in an increase in efficiency.
- What are the alternatives of gasoline combustion powered vehicles (gasoline/electricity hybrids, hydrogen, bio-fuels.)
- What are some of the issues which affect the design of exhaust pipes (why do some cars have two exhausts)?
Prof. Littman gave a demonstration of a two gear transmission system constructed from Meccano.
Lastly we did a calculation of the minimum thrust-stroke power required to accelerate a motorcycle and rider of total mass 400lbs (given specific gear ratios and given a static friction coefficient of 1.)
F.Steere