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EASY Pinewood Derby Car WINS using Science!!!

Mark Rober
66.7M subscribers
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32M views 10 years ago
7 simple steps that ACTUALLY MATTER to building a winning pinewood derby car. I built a car in 45 minutes using these steps and crushed all the competition by more than 2 car lengths (proof is in the video :) Special thanks to Steve at DerbyMonkey.com for providing his expertise and materials for the video. CONSIDER SUBSCRIBING: http://tinyurl.com/MarkRober-Sub HERE'S HOW I MADE THE ROCKET CAR:    • 40 MPH Pinewood Derby Car- HOW TO   7 Key Steps: 1. Max weight ~1" in front of rear axle 2. Reasonably aerodynamic 3. Ride on 3 wheels 4. Lightweight wheels 5. Bent polished axles 6. Railride/alignment 7. Lots o' graphite **HELPFUL LINKS** Dr. Acton's video: http://pinewoodphysics.com/index.html Pre-polished, bent axles to purchase: https://www.maximum-velocity.com/prod... Lightweight wheel options to purchase: https://www.maximum-velocity.com/prod... More details on polishing the axles:    • Polishing a Pinewood Derby Axle    …...more
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start the height of your centre of masses on the track

1:38

putting it in the right location towards the rear of the car

3:37

put all your weight toward the back of the car

3:55

concentrated the mass in different locations on the car

4:51

run through the remaining list of the critical parameters

5:24

rotating about the axis

5:52

minimize the moment of inertia on each of the wheels

6:07

reduce your surface area by a factor of two

7:15

adding graphite to your wheels and axles

7:59

build a car from scratch in about 45 minutes

8:33

mark the 12 o'clock position on the nail head

9:13

bending the axle so to bend the axles

9:28

deepen one side of the pre-cut axle groove

10:22

steer your car into the rail

11:08

check the rear wheels

12:25

measure an inch in front of the rear axle

12:38

the canted wheel

13:05

implement the rail riding technique

15:02
EASY Pinewood Derby Car WINS using Science!!!
332KLikes
32,110,050Views
2014Apr 16
7 simple steps that ACTUALLY MATTER to building a winning pinewood derby car. I built a car in 45 minutes using these steps and crushed all the competition by more than 2 car lengths (proof is in the video :) Special thanks to Steve at DerbyMonkey.com for providing his expertise and materials for the video. CONSIDER SUBSCRIBING: http://tinyurl.com/MarkRober-Sub HERE'S HOW I MADE THE ROCKET CAR:    • 40 MPH Pinewood Derby Car- HOW TO   7 Key Steps: 1. Max weight ~1" in front of rear axle 2. Reasonably aerodynamic 3. Ride on 3 wheels 4. Lightweight wheels 5. Bent polished axles 6. Railride/alignment 7. Lots o' graphite **HELPFUL LINKS** Dr. Acton's video: http://pinewoodphysics.com/index.html Pre-polished, bent axles to purchase: https://www.maximum-velocity.com/prod... Lightweight wheel options to purchase: https://www.maximum-velocity.com/prod... More details on polishing the axles:    • Polishing a Pinewood Derby Axle   Axle bender tool:    • Derby Worx Pro Axle Bender   More details on Rail Rider alignment:    • Derby Worx PRO RAIL RIDER TOOL   **MY STUFF** I make videos like this once a month all year long while supplies last: CHECK OUT MY CHANNEL: http://tinyurl.com/MarkRober-YouTube FOLLOW ON TWITTER: https://twitter.com/#!/MarkRober FACEBOOK ME:   / markroberyoutube   **MUSIC** All music created by Qwiet. You should go sub his channel:    / qwietmusic   Twitter:   / qwiet   Facebook:   / qwiet  

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Mark Rober

66.7M subscribers