#11: Transmission and Final Drive

Question 0

Name the three jobs (functions) of the gears used in motorcycle transmissions.

Answer 0

A. Fixed

B. Slider

C. Freewheeler

Question 1

What are the two purposes of the motorcycle transmission?

Answer 1

1. Change speeds of motorcycle at a given rpm.

2. Keep engine within usable powerband.

Question 2

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

Answer 2

1. Slots or Dogs (65% percent engagement.

Question 3

State the basic rule about how, slider, fixed, and freewheeling gears are identified.

Answer 3

A. Opposite and next to every slider is a freewheeler, all the other gears are fixed.

Question 4

In an indirect-drive transmission, all the drive gears will be on what shaft?

Answer 4

A. Mainshaft

Question 5

What shaft rotates opposite to the mainshaft?

Answer 5

A. Countershaft.

Question 6

How is M1 identified in an indirect-drive transmission?

Answer 6

A. Smallest gear.

Question 7

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

Answer 7

1. Direct Drive

2. Indirect-Drive

Question 8

Direct-Drive

Answer 8

Powerflow in and out on the mainshaft

Question 9

Indirect-Drive

Answer 9

Powerflow in through the mainshaft and out the countershaft

Question 10

The largest gear on the countershaft of most transmissions is?

Answer 10

A. C1. It is the largest gear on the countershaft

Question 11

Q. What are the three types of shift linkages?

Answer 11

1. Pawl
2. Floating Plate
3. Ratchet

Question 12

Q. What is the purpose of the shift mechanism?

Answer 12

A. Moves the shift forks

Question 13

Q. Name the two types of shift mechanisms.

Answer 13

1. Drum

2. Cam Plate

Question 14

Q. What are the two functions of a shift detent?

Answer 14

1. Helps transmission go into gear

2. Helps transmission stay in gear

Question 15

Q. What is the purpose of the shift fork?

Answer 15

A. Moves the Slider gear

Question 16

Q. A 5-speed transmission normally has __ shift forks?

Answer 16

A. 3 (three)

Question 17

Q. What are three types of damage we should look for when inspecting shift forks? Hint: 3 B’s

Answer 17

1. Bent 2. Burnt 3. Broken

Question 18

Q. A dual-range (sub) transmission is equivalent to?

Answer 18

A. An auxiliary gearbox found between transmission and Final Drive.

Question 19

Q. Name the three types of Final Drives used on motorcycles:

Answer 19

1. Chain 2. Belt 3. Shaft

Question 20

Q. Why is Hypoid spec oil required in modern shaft drive rear ends?

Answer 20

A. Because of its ability to deal with extreme pressure.