Bicycle and Motorcycle
Choose an answer from the three choices
and True or False offered after each question and then "Check Your Answers"
at the end of the quiz.
Steering inputs counter lean to maintain balance. At high speeds, the
input required to return the bike to upright only needs to be small; a
much greater input is required to maintain balance at low speed. It is
_______ to maintain balance at high speeds. (Fill in the blank.)
2. The farther forward (closer to front wheel) the
center of mass of the combined bike and rider, the less the front wheel
has to move laterally in order to maintain balance. Which means, the
further back (closer to the rear wheel) the center of mass is located,
the more front wheel lateral movement or bike forward motion will be
required to regain balance.
3. A factor that influences how easy or hard a bike
will be to ride is trail, the distance by which the front wheel ground
contact point trails behind the point where a line through the steering
axis, the axis about which the steering mechanism (fork, handlebars,
front wheel, etc.) pivots, intersects the ground. What is this factor?
4. Another factor that can also contribute to the
self-stability of traditional bike designs is the distribution of mass
in the steering mechanism. What is NOT included?
5. In order to turn, that is change their direction of
forward travel, bikes must balance the relevant forces: gravitational,
inertial, frictional, and ground support. What must they do to balance?
6. Where does most of the braking force of standard
upright bikes comes from?
- The front wheel
- The rear wheel
- The engine
7. What is it called if the rear wheel is lifted and
the bicycle flips.
- Endo (end-over-end)
8. On motorcycles, light rear-wheel braking, sometimes
referred to as dragging, can be a useful aid to stability when turning
at low speed. What is it called?
9. How many moving parts does a bike have?
10. In vehicle acrobatics, what is the trick where the
front wheel or wheels come off the ground and the vehicle is balanced on
the rear wheel or wheels.