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Motorcycle Theory II > Test #1 Study > Flashcards

Test #1 Study Flashcards

1
Q

Air pump which increases intake pressure.

A

Supercharger

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2
Q

A 5-speed transmission normally has 2 shift forks. (True/False)

A

False

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3
Q

What’s the prupose of the shift mechanism?

A

Moves the shift forks.

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4
Q

All gears on one shaft mesh with all gears on other shaft all the time.

A

Constant Mesh

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5
Q

What property does API rate in motor oil?

A

Service duty or levels of protection.

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6
Q

CVT’s are commonly found on what:

A

ATV’s

UTV’s

Snowmobiles

Scooters

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7
Q

What’s the purpose of the shift fork?

A

Moves the slider gears.

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8
Q

Can handle radial loads as well as axial thrust loads in both directions.

A

Ball Bearings

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9
Q

Purpose and application of a dry lubricant.

A

Used on cables and levels where contaminate accumulation is a concern.

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10
Q

Can handle radial loads but can only take thrust loads in one direction.

A

Tapered Bearing

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11
Q

Two purposes of the intake manifold:

A

A.) Intake conduit which seals between the intake system and engine.

B.) Part of the tune length.

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12
Q

A fixed gear may be……… on to the shaft.

A

Machined Splined Pressed

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13
Q

An indirect drive will have all the driven gears on what shaft?

A

Crankshaft

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14
Q

Changes fuel valve to use more fuel in the tank.

A

“RES” function

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15
Q

What is the gear ratio in the top gear of a direct drive transmission?

A

1:1

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16
Q

Type of bearing that requires a layer of high-pressure oil between it and the roating surface and normally has a split design.

A

Precision Insert (Plain Bearing)

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17
Q

Radial Loads

A

Right angle to the shaft.

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18
Q

What can be used in the transmission instead of a slider gear?

A

CVT

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19
Q

Two methods of rating octane

A

(R) Research

(M) Motor

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20
Q

What is the purpose of a sliding gear?

A

Toyou dog lock into freewheeler

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21
Q

Name the three types of shift detents.

A

A.) Arm and Roller

B.) Spring and Plunger

C.) Spring and Ball

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22
Q

Three types of air filters:

A

A.) Paper

B.) Foam

C.) Gauze (Oiled Fabric)

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23
Q

Purpose of the oil filter bypass valve.

A

Allows oil to pass the filler to maintain lubrication needs in the engine.

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24
Q

Purpose of the oil pressure relief valve.

A

Maintains oil pressure at the same force it takes to open the valve.

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25
Q

Main advantage of oxygenated gasoline.

A

Reduse emissions

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26
Q

Basic rule to identify slider, fixed, and freewheeling gears

A

Sliders are the gears with channels for shifting fork. Opposite and next to each spider are the freewheelers. All others are fixed.

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27
Q

The maximum number of speed may be determined by multiplying the number of shift forks times 2:

A

True

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28
Q

Name the four pruposes of bearings:

A

A.) Reduce friction on moving parts.

B.) Support axial and/or radial loads on the shaft.

C.) Control End Play

D.) Provide Spacing

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29
Q

Manual override on the bike makes engine pump (prime) fuel.

A

“PRI” function

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30
Q

Name the three types of gears used in Motorcycle transmissions.

A

Fixed Free wheeler Slider

31
Q

Opens when engines running but closes when it’s off.

A

Vacuum type petcock

32
Q

Shift forks can be made of?

A

A.) Bronze

B.) Hard Chromed Steel

33
Q

The “W” in multiviscosity oil means?

A

Winter Grade

34
Q

What’s the purpose of the final drive?

A

Transmits power from the transmission to the rear wheel.

35
Q

Air/Fuel ratio of 12:1 is ________ than stoichiometric?

A

Richer

36
Q

Fuel Valve enables:

A

The fuel tank to be removed for servicing the bike.

37
Q

Because of its ability to deal with extreme pressures, this is used in modern shaft drive rear ends….

A

Hyphoid Spec Oil

38
Q

The carburetor must be jetted richer when what occurs?

A

Air Density increases

39
Q

What does SAE rate?

A

Viscosity

40
Q

Six purposes of lubricating oil.

A

A.) Reduce Friction

B.) Dampen Shock

C.) Protect parts from corrosion

D.) Sealing

E.) Cooling

F.) Cleaning

41
Q

Name the two stages of the dry sump oil pump.

A

A.) Feed Pump

B.) Scavenge

42
Q

What are the two functions of a shift detent?

A

A.) Helps transmission go in to gear

B.) Helps transmission stay in to gear

43
Q

Three attributes of a bushing?

A

A.) Capable of high loads.

B.) Uses grease on chassis application.

C.) Requiress constant lubcrication when used on transmission and engine applications.

44
Q

Multi-layer design with soft metals to absorb small particles.

A

Embedability

45
Q

Two Types of Shift Mechanisms.

A

A.) Drum

B.) Cam Plate

46
Q

What mus be done to the fuel tank because of Boyle’s Law.

A

Must be vented.

47
Q

What are the three purposes of the motorcycle transmission?

A

Change speed of Motorcycle at a given RPM. Change mechanical advantage Keep engine rom within usable powerband

48
Q

How do you identify an “M1” in and indirect-drive transmission?

A

Smallest gear on mainshaft

49
Q

Name and describe the six engine oil additives.

A

A.) Viscosity Modifiers-bridges gap between multigrade oils and determines reaction to changes in temperature, pressure, or speed.

B.) Anti-Foam

C.) Friction Modifiers-coats sliding surfaces to reduce friction.

D.) Detergents-helps reduce deposits.

E.) Antioxidant-helps keeps rings free and combustion chamber cleared.

F.) Shock & Sheer Protectants-creates a cushion for parts.

50
Q

Physical property of lube and indication of oil flowability at a certan temperature.

A

Viscosity

51
Q

Purpose of using grease?

A

Designed to lubricate in an are where a liquid lubricant may splatter.

52
Q

Why is higher Air/Fuel micture needed for cold start?

A

Cold engine offers less opportunity to vaporize fuel.

53
Q

Uses controlled lab engines to rate.

A

Octance rating system

54
Q

Theoretical perfect combustion ratio of air/fuel in gasoline. (Stoichiometric)

A

14.7:1

55
Q

Largest gear on the countershaf of most transmissions is….

A

C1

56
Q

State that requires te fuel tank to be vented in to a charcoal canister:

A

California

57
Q

What are the protrusions on the side of the gears called?

A

Slots or dog locks

58
Q

Fuels resistance to detonation

A

Octane

59
Q

Two reasons why a motorcycle may have a fuel pump:

A

A.) Tank too low to provide adequate pressure to the carburetors.

B.) Part of a Fuel Injection System

60
Q

Air/Fuel ratio of 16:1 is ____ than stoichiometric?

A

Leaner

61
Q

Differences in wet and dry sump lubrication systems.

A

Wet sump oil is stored at crankcase bottom

Dry sump stores oil externally from the engine

62
Q

What are the three types of shift linkages?

A

A.) Claw, Hook, and Pin

B.) Floating PLate

C.) Ratchet

63
Q

Name and define two basic types of transmissions used in motorcycles.

A

Indirect Drive: power flow enters one axis, leaves on other. Direct drive: power flow enters/leaves same axis.

64
Q

Five types of rolling element bearings.

A

A.) Ball Bearing

B.) Needle Bearings

C.) Roller Bearings

D.)Tapered Bearings

E.) Thrust Bearings

65
Q

Three Types of Fuel Pumps:

A

A.) Mechanical

B.) Electrical

C.) Vacuum

66
Q

Axial Thrust Loads

A

Along the shaft.

67
Q

Cruising speeds Air/Fuel mixture _______ and why?

A

13-14:1

Small throlle opening combined with moderate RPM results in good intake and fuel usage.

68
Q

Four fuel valve types:

A

A.) Manual

B.) Vacuum

C.) Electrical

D.) Vacuum W/ Electrical Assistance

69
Q

Two attributes of shims:

A

A.) Control Axial Load.

B.) Controls end play and provides spacing.

70
Q

The types of damages we should look for when inspecting shift forks.

A

A.) Burnt

B.) Bent

C.) Broken

71
Q

Three types of Oil Filters

A

A.) Internal

B.) External Screw On

C.) Centrifugal

72
Q

Three types of final drives used on motorcycles

A

A.) Chain

B.) Belt

C.) Shaft

73
Q

Three most common oxygenates used in oxygenated fuels.

A

A.) Ethanol

B.) Methanol

C.) MTBE

74
Q

Idle requires an Air/Fuel mixture of _____ and why?

A

12-14:1

Low intake speed a udle results in reduced atomization.

Motorcycle Theory II (2 decks)

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