SILVER

#### How to ride a motocross track most efficiently?

I will study racetrack designs, learn the science behind each obstacle and research most efficient riding techniques .

### Problem

How to ride a motocross track most efficiently.

Hypothesis

I think there are some common components to motocross tracks because they all have similar concepts and obstacles. I think there are ways to ride tracks most efficiently with riding techniques and strategies that the racer can learn and improve with practice.

Background info

I will do this by:

• Studying many race track designs, and learning the science behind the different obstacles.  If I can understand the science behind the tracks, maybe I can plan ways to ride faster?
• Research ways to ride each obstacle most efficiently.  Are there riding techniques that are more efficient than others, to help go faster?

The reason I am doing my science fair on how to ride a motocross track most efficiently so I can learn the common obstacles and soil types and learn how to ride more efficiently so i can ride faster.

### Method

I will do this by:

• Studying many race track designs, and learning the science behind the different obstacles.  If I can understand the science behind the tracks, maybe I can plan ways to ride faster?
• Research ways to ride each obstacle most efficiently.  Are there riding techniques that are more efficient than others, to help go faster?

### Research

Most Common Obstacles

STARTS:

Straight aways:  Starts are usually a long straight away.

CORNERS:

Corners with ruts, and corners without ruts.

Tight Corners with ruts:  slower speed sharp corners, usually 180 degrees, with a rut made by many dirt bikes riding in the same line.  The pushing forces of the bike and rider in the same spot makes the ruts.

Tight corners without ruts:  slower speed sharp corners, usually 180 degrees, flat with no ruts or berms.

Sweeping corners with ruts:  high speed gradual corners, usually between 90 and 180 degrees, with ruts,

Sweeping corners without ruts: High speed gradual corners, usually between 90 and 180 degrees with no ruts

JUMPS: Jumps are mostly solid structures that are made with piles of dirt.  Sometimes they are human built structures, and sometimes they are natural structures like small hills.  Track crews make these jumps with heavy equipment.  Sometimes jumps are made as a frame structure, like the mountain’s edge jump at the Calgary track.  They built a large jump with a tunnel underneath.

Singles: One mound of dirt.  A single jump usually landing on flat ground.

Doubles: Two mounds of dirt.  One jump face with a landing far away, and a gap in between.

Triples: Three mounds of dirt.  One jump face with a landing far, and another mound of dirt in between the gap.  You can double it, or triple it.

Table tops:  A large mound of dirt that has a jump face and a landing.  The gap is filled in so it looks like a table.

Wall jumps:  One mound of dirt, like a single.  But very tall and very steep.

WHOOPS:

Rollers: Many mounds of dirt spaced near each other with rounded, rolling edges.

Supercross whoops: Many mounds of dirt spaced very close together with sharp, steep edges.

### Data

OBSTACLES:   DIFFERENT TRACKS THAT I HAVE PERSONALLY RIDDEN

 Track Straights Corners Jumps Whoops Calgary, AB ✅ ✅ ✅ ✅ Brooks, AB ✅ ✅ ✅ ✅ Medicine Hat, AB ✅ ✅ ✅ ✗ Drumheller, AB ✅ ✅ ✅ ✅ Irricana, AB ✅ ✅ ✅ ✗ Taber, AB ✅ ✅ ✅ ✅ Raymond, AB ✅ ✅ ✅ ✗ Coulee Springs, AB ✅ ✅ ✗ ✗ Alix, AB ✅ ✅ ✅ ✗ Thorne Valley, AB ✅ ✅ ✗ ✗ Revelstoke, BC ✅ ✅ ✅ ✗ Kamloops, BC ✅ ✅ ✅ ✗ Popkum, BC ✅ ✅ ✅ ✗ Invermere, BC ✅ ✅ ✅ ✅ Tata Creek, BC ✅ ✅ ✅ ✅ Elko, BC ✅ ✅ ✅ ✗ Kent, Washington ✅ ✅ ✅ ✗ Bremerton, Washington ✅ ✅ ✅ ✗ Grays Harbour, Washington ✅ ✅ ✅ ✗

 Port Angeles, Washington ✅ ✅ ✅ ✗ The Ridge, Washington ✅ ✅ ✅ ✗ Washougal, Washington ✅ ✅ ✅ ✅ Hanigan, Washington ✅ ✅ ✅ ✗ Milestone, California ✅ ✅ ✅ ✗ Murrietta, California ✅ ✅ ✅ ✅ ACP Phoenix, AZ ✅ ✅ ✅ ✗ Motoland, Phoenix, AZ ✅ ✅ ✅ ✅ Portland, Oregon ✅ ✅ ✅ ✅ Kahuku, Hawaii ✅ ✅ ✅ ✅

Total:   Straights: 29     Corners: 29      Jumps: 27        Whoops: 12

The most common obstacle on a motocross track are straights and corners, because all 29 tracks have them.  2 of the tracks didn’t have jumps because they are more natural terrain with speed sections and rolling hills with corners.  Whoops are not very common because only 12 tracks had them.  I need to practice the most popular obstacles because they are on more tracks.  I also need to practice whoops because I don’t get to do them very often because they don’t have them at the Calgary track.

SOIL TYPES:

Now let’s study the soil types:

DIFFERENT SOIL TYPES:

Hard packed:  This is hard packed ground.  Clay is usually hard packed.

Loam:  Loamy, earthy, fluffy dirt, sometimes mixed with black soil.

Sand:  Sand like at a beach.

Silt:  A mixture of sand, clay, loam, with similar characteristics as sand.

MOISTURE:

Moisture depends on the weather conditions, or the preparation of the track.

Dry:  Motocross tracks are usually very dry, unless it's raining, or unless it's prepared (prepped) by a track crew.

Wet: Motocross tracks are wet when it's raining, or when it's just been prepared (prepped) by a track crew with a watering system.

In between (just right):  This is when the dirt has some moisture and is tacky, grippy, and not dusty.

SOIL COMPOSITION:  DIFFERENT TRACKS THAT I HAVE PERSONALLY RIDDEN

 Track Clay Loam Sand Silt Rock/gravel Calgary, AB ✅ ✅ ✗ ✅ ✗ Brooks, AB ✅ ✅ ✗ ✅ ✗ Medicine Hat, AB ✅ ✗ ✗ ✗ ✗ Drumheller, AB ✅ ✗ ✗ ✗ ✗ Irricana, AB ✅ ✗ ✗ ✅ ✅ Taber, AB ✅ ✗ ✗ ✅ ✗ Raymond, AB ✅ ✗ ✅ ✅ ✗ Coulee Springs, AB ✅ ✅ ✗ ✗ ✗ Alix, AB ✅ ✗ ✗ ✗ ✅ Thorne Valley, AB ✅ ✅ ✗ ✗ ✗ Revelstoke, BC ✅ ✗ ✗ ✅ ✅ Kamloops, BC ✅ ✅ ✗ ✅ ✗ Popkum, BC ✅ ✗ ✗ ✗ ✅ Invermere, BC ✅ ✗ ✗ ✗ ✅ Tata Creek, BC ✅ ✗ ✅ ✅ ✗ Elko, BC ✅ ✗ ✗ ✅ ✅ Kent, Washington ✅ ✅ ✗ ✗ ✅ Bremerton, Washington ✅ ✗ ✗ ✅ ✅ Grays Harbour, Washington ✅ ✅ ✅ ✅ ✅

 Port Angeles, Washington ✅ ✗ ✗ ✗ ✅ The Ridge, Washington ✅ ✅ ✗ ✗ ✅ Washougal, Washington ✅ ✅ ✗ ✗ Hanigan, Washington ✅ ✅ ✗ ✗ ✅ Milestone, California ✅ ✅ ✗ ✅ ✗ Murrietta, California ✅ ✗ ✅ ✅ ✗ ACP Phoenix, AZ ✅ ✅ ✗ ✅ ✗ Motoland, Phoenix, AZ ✅ ✗ ✗ ✗ ✗ Portland, Oregon ✅ ✅ ✗ ✗ ✗ Kahuku, Hawaii ✅ ✅ ✗ ✗ ✗

Total:              Clay: 29            Loam: 14          Sand: 4             Silt: 14          Rocks/Gravel: 12

Out of the 29 tracks, they all have clay, 14 have loam, 4 have sand, 14 have silt, and 12 have rocks/gravel.  The least amount of practice I get is in sand so I want to practice it more.

Now that I understand the various types of soil composition and obstacles of a motocross track, now I have to study riding techniques and how the different types of forces apply.  Let's review the different forces

Frictional Force:  When an object moves across another surface, the surface is creating a force to slow down the object.

Tension Force:  A force that happens when a rope, string, cable, or wire is pulled in each direction.  I can’t think of anything related to riding technique for this.  But I can think of tension forces on the bike.  For example, the chain driving the wheel from the sprockets, or the throttle cable lifting the needle in the carburetor when you twist the throttle.  But this science fair project is not related to the mechanics of the bike.

Normal Force:  When one object is being held up or supported by another object that has the same amount of force.

Air Resistance Force:  When something is travelling through the air, and the air resists the movement of the object.

Applied Force:  When a person or some kind of object or machine pushes something by applying force.

Spring Force:  When a force is made by compressing or stretching a spring.

Gravitational Force:  A downward force toward the center of the earth.

### Conclusion

CONCLUSION:

In conclusion, after studying the science behind motocross track design, soil composition, and most common obstacles, I was able to answer my problem.  By understanding scientific forces, I was able to understand the science behind proper riding technique.  There are many ways to ride a motocross track most efficiently by understanding the scientific forces for each track and obstacle.  My hopothesis was correct.

### Citations

Citiantions:

I interviewed and studied data from several motocross racers and track builders including:

Spenser Wilton:  Professional off road racer (coaching sessions and personal interview).

Charlie Johnston:  Professional motocross racer and professional motocross track builder (interview and riding footage).

Wyatt Hasil:  Alberta champion amatuer racer (best friend).

Stefan Everts: 9 time world champion mxgp racer (riding footage and personal interview).

Jared Stock: Pro offroad/Motocross racer

Tell Schell Episodes:  I have made 29 Tell Schell episodes on my Instagram and interview racers often.

And Mitch Robinson

### Acknowledgement

I wish to personally and respectfully thank all of the people and organizations that have helped me with this science fair project and have taught me how to ride a motocross track most effeciently.  In no particular order:

• All my riding and racing buddies.
• All my past and present coaches:  Spensor Wilton (pro, factory Gas Gas rider), Tyler Villipoto (former pro), Ryan Villipoto (former pro, 5 time AMA champion) Adam Ciancarulo (pro, Monster Energy Kawasaki), Jared Stock (pro, Ktm Canada), Charlie Johnston (pro, JC Powersports), Mitch Robinson (pro, Fit4Moto), Nick Collins (pro, BFD), Tee Parrot (pro, JC Powersports), Josh Gedak (pro, Yamaha Canada), The Bly brothers (Rylan and Jayden, Pro, Pensilvania), Tommy Weeks (pro), Darian Sanai (pro, MXGP contendor, Monster Energy Kawasaki), Kyle Pearson (Pro), and everyone else, you know who you are.
• My Mom, Dad, and Sister.
• All my sponsors, friends, and family.
• All my techers for teaching me more about science and other subjects.
• And thank you for letting me be part of the science fair.