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2009 Pinewood Derby

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Survive the experience with all ten fingers Pine Derby Quiz: Question 2 The fastest Pinewood Derby cars: a. Weigh exactly five ounces b. Have ... – PowerPoint PPT presentation

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Title: 2009 Pinewood Derby


1
2009 Pinewood Derby
  • Cubmaster Bob
  • Stoneham Pack 551

2
Do your best
  • Do your best and have fun.
  • Everyone who builds a car and races it is a
    winner
  • Show good sportsmanship.
  • No one correct way to make car.

3
Look at my car go
4
Message to Adults
5
Message to Adults (concluded)
  • Let the boys think up the design and do as much
    of the work as possible.
  • There is a Family Race for Dads/Moms/Sisters/Broth
    ers/Etc for your creativity to shine.
  • Try to beat Cubmaster Bob in the Family Race.

6
What kind of car?
  • Use your imagination.
  • Be kind to the adults (pick something you can do
    yourself).
  • Scout shop has standard designs that come with
    templates and decals.

7
Car Designs - Standard
8
Car Designs - Wacky
9
Car Designs - Wacky
10
Car Designs - Wacky
11
Car Designs - Wacky
12
Car Designs - Wacky
13
Car Designs - Wacky
14
Car Designs - Wacky
15
Car Designs - Wacky
16
Car Designs Wacky
17
Car Designs Fast but Ugly
(Dont let this happen to you!)
18
What forces affect the car
  • Gravity
  • Friction
  • Air Resistance

19
Gravity
20
Gravity - Good
  • Gravity pulls you (and everything else) to earth.
  • Gravity pulls the car downward which causes it
    to go down the track.

21
Gravity Acting on the Car
22
Gravity Acting on Derby Car
23
Friction
24
Friction - Bad
  • Friction is caused when two surfaces rub
    together.
  • Rougher surfaces have more friction than smooth
    surfaces.

25
Friction Acting on the Car
  • As the car goes down the track. Friction slows
    the car down

Cubmaster Bob Rules
26
Air Resistance
27
Air Resistance Bad (a little)
  • Air resistance is friction between the air and
    the car.
  • The smoother the car shape the less air
    resistance.
  • Air resistance is not a major source of slowing
    the car down.

28
Air Resistance Acting on the Car
29
Which has less Air Resistance
Note This car has an illegal length (but it
sure is cool looking!)
30
Derby Car Kit
  • Wood block
  • Four wheels
  • Four axles (nails)

31
Cutting the car body
  • Can use hack saw, jig saw, your teeth (just
    kidding) etc.
  • One area for adult to participate or supervise.
  • Scout should make a template (side view) of the
    car.

32
Cutting the body (concluded)
  • Leave the front flat so it will work the starting
    gate

33
Weight
  • Remove light weight wood and replace with heavier
    metal weights
  • Place weight towards the rear of the car. Higher
    on the track more height for gravity to work on
    the track.
  • Max weight is 5 ounces. Build to slightly less
    than 5 ounces and add weight at weigh-in.

34
Weight
  • Drill holes and fill with weights

35
Weight Distribution
36
Whoops! - Weight too far back
37
Types of Weights
  • Zinc, Lead, Tungsten, Clay
  • Be careful with lead -- It is toxic.

38
Axles and Friction
39
Polishing Axles
  • Debur the axles with a file.
  • Sand the axles with sandpaper.
  • Can use a drill or Dremel tool.
  • Use the spin test.

40
Axles Before Polishing
41
Axles After Polishing
42
Polishing Axles with Drill
43
Wheels and Friction
  • Wherever wheels touch something there is
    friction.
  • Sanding your wheels can be tricky and error
    prone.
  • Smooth the tread and axle hole.

44
Smoothing the Wheels
After
Before
45
Wheel Mandrel
46
Attach the Wheels
  • Use the slots or make new holes using a drill
    press. Make sure they are straight with the car.
  • White glue or hot glue the axles in the slots.
  • Add dry lubrication (graphite).

47
Align the wheels
48
Crooked Wheels
49
Decorate
  • Make it cool
  • Paint
  • Decals
  • Figures

50
Great Decorations
51
Great Decorations

52
Great Decorations
53
Great Decorations
54
Great Decorations
55
Great Decorations
56
Great Decorations
57
Great Decorations
58
Great Decorations
59
Great Decorations
60
Great Decorations
61
Rules
  • The rules in the official kit are used for Pack
    551 derby.
  • Length 7 inches
  • Do not add items (weights/guns/spare tire etc) to
    the back/front of the wood block as it will be
    too long
  • Width 2 ¾ inches
  • Weight 5 ounces
  • No moving parts or loose items

62
Rules (concluded)
  • Honesty is a Cub Scout Core value.
  • Make an all-new car each year.
  • The scout does most of the work.
  • Only use BSA parts. Do not buy body, wheels,
    axles from anywhere but the Scout Shop.
  • Do not buy speed wheels/axles or pre-built cars
    from the internet its cheating!
  • Have fun!

63
Labeling your car
  • Label the front bottom of the car as follows

(Leave Space Here for car Number) John Smith Den
6 2008
Front
64
Advanced Car Makers Only
65
Race Dates and Schedule
  • Wednesday, January 28, 2008 Pinewood Derby
    Clinic Colonial Park School, Science Room 6
    pm to 8 pm
  • Tuesday, February 3, 2008 and February 5, 2008
    Pinewood Derby Weigh-Ins First Congregational
    Church 6 pm to 8 pm.
  • The car will be turned in and held till race day.
  • 2/3 Tigers, Wolves, Bears
  • 2/5 - Webelos
  • Saturday, February 7, 2008 Pinewood Derby
    First Congregational Church 9 am to 1 pm
  • 9-10 am Wolves - Den 8 and Den 9
  • 10-1030 am Bears - Den 3
  • 1030-11 am Webelo II - Den 1 and Den 5
  • 11-1130 am Tigers Den 10
  • 1130-12 pm Lunch Break
  • 12-130 pm Webelo I Den 2, Den 6 and Den 7
  • 130pm Family Race
  • Where your Class A Uniform Look good Be proud

66
Scout List (See Ed if you are missing)
  • Den 6-Webelos Central
  • Barr, Alexander
  • Burridge, Billy
  • Dragone, Phillip
  • Eustace, David
  • Flynn, Collin
  • Jackson, Paul
  • Little, Nicholas
  • O'Riordan, Daniel
  • Orphanos, Ricky
  • Pizzano, Eddie
  • Porter, Matthew
  • Ricci, Matthew
  • Den 7-Webelos Colonial Park
  • Doucette, Ben
  • Mahoney, John
  • Trofimow, Noah
  • Den 3-Bear Cen/Col/South
  • Barry, Peter
  • Cappello, Adam
  • Caturello, Domenic
  • Godfrey, Brendan
  • Hanna, Ryan
  • Moriarty, Caleb
  • Norris, Adam
  • Oesch-Emmel, Dylan
  • Den 2-Webelos South
  • Burgess, Jeremy
  • Burns , Jonathan
  • Canova, Peter
  • Coughlin, Stephen
  • DiGangi, Cole
  • Edwards, Smith
  • Josephson, Ryan
  • Mazza, Anthony
  • Den 10-Tiger South
  • Burns, Christopher
  • Kerans, Owen
  • Moriarty, Luke
  • Romanos, Charles
  • Russell, Casey
  • Ryan, O'Connell
  • Varney, Tanner
  • Den 8-Wolf Colonial Park
  • Barton-Negreiros, Alejandro
  • Binder, Mason
  • Lanza, Evan
  • Larzelere, Matthew
  • Mahoney, Jack
  • Spinali, James
  • Trofimow, Nathaniel
  • Webb, Adam

67
Pine Derby Quiz Question 1
  • A Scout's primary goal in Pinewood Derby should
    be to
  • a. Work together with a family member on a joint
    project
  • b. Acquire a healthy attitude about competition
    and sportsmanship
  • c. Become more proficient at woodworking
  • d. Survive the experience with all ten fingers

68
Pine Derby Quiz Question 2
  • The fastest Pinewood Derby cars
  • a. Weigh exactly five ounces
  • b. Have polished wheels and axles
  • c. Are well lubricated
  • d. Are powered by rubber bands, hidden motors, or
    small furry creatures.

69
Pine Derby Quiz Question 3
  • When a Scout asks for help getting started on his
    Pinewood Derby car, the most likely answer is
  • a. "Sure, son. Let's go have some fun working
    together!"
  • b. "Sorry, son. I'm busy working on my car for
    the Family race."
  • c. "What's the big hurry, son? The race isn't for
    a two hours."
  • d. Be right there Paul Pierce needs one more
    assist to get a Double-Double

70
See you on race day!
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