Snowboarding Poles

1
Snowboarding Poles

• Tim Choate
• Jeff Jones
• Matt Kaloupek
• Vicki Krapohl
• Brian Schaaf

2
Project Definition

• Collapsible Snow Boarding Pole
• A product that alleviates the need for
  snowboarders to unlock their bindings while
  boarding.
• The product must collapse down to fit
  comfortably.
• It must be accessible and unobtrusive.
• It must be comparable in performance and cost to
  other poles on the market.

3
Information Gathered

• Many major corporations outsource their pole
  manufacturing to foreign countries
• Mr. Charley French Ski Pole Engineer at Scott
  USA
• Mr. Brian Jordan Head Engineer at Black Diamond
• Adjustable poles for hiking already exist but not
  for the same purpose
• Experience has shown that in these poles,
  twist-lock mechanism does not hold
• The flick lock and oval shaft types are better
  and costlier.
• Order placed for flick lock poles to reverse
  engineer and analyze

4
Information from Mr. French at Scott

• For all of our pole designs we look at strength
  vs. weight vs. cost.
• We do not use any computer simulation in the ski
  pole design or production.
• They also have a minimum strength requirement,
  which is measured by athree-point bend test.

5
More Information from Scott
6
Black Diamond FlickLock Mechansim

• Two- or Three-Piece adjustable pole
• Patterned after a bicycles quick-release nut on
  wheel hubs and seat poles, the flick-lock works
  by clamping the larger, upper shaft around the
  smaller-diameter lower shaft of the pole with the
  security of a vice.
• Adjusts by flipping open the plastic tab and
  tightening the screw.

7
Black Diamond Test Results

• Three point load test
• For the experiment we tested deflection vs. load.
• Pole slipped at 120lbsf

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Concept 1

• Features
• Telescoping pole with expandable pins to lock it
  in place. Twisting the handle retracts the pins
  allowing the pole to collapse.
• Pros
• Strong
• Easy to extend and retract
• Takes up little space
• Cons
• Complicated to build
• Has many parts, so might break more easily
• More expensive than other designs

9
Concept 2

• Features
• Under tension from an internal elastic, the pole
  is locked or unlocked by twisting.
• Pros
• Simple and Durable
• Easy to Maintenance
• Cons
• Not Aesthetically Pleasing
• Questionable Strength

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Concept 3

• Features
• Medium strength magnetic lock for links
• Only strong enough to support weight if
  compressed in appropriate direction
• Pros
• Easy to deploy and collapse
• Simple and cheap to design
• Cons
• Will collapse if not used properly
• Not as secure as other designs

11
QFD
12
Work Breakdown Structure
13
Gantt Chart
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Product Architecture
15
Pole Measurements
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More Views
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Design Analysis

• Buckling Analysis
• Given length (l)135cm, diameter (d)14mm, and
  thickness (t)2mm 

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Design Analysis

• Shear Stress
• Given the pins are cylinders with 6.36mm
  diameter, and shear strength493MPA

19
Joint Stiffness
20
Material Evaluation
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Material Evaluation

• Aluminum
• Pros-low cost and light weight
• Cons-not as strong as other metals
• Stainless Steel
• Pros-low cost
• Cons-heavier than other options and not as strong
• Carbon Fiber
• Pros-light weight and very strong
• Cons-costly and very hard to manufacture
• Titanium
• Pros-light weight and strong
• Cons-very costly and hard to find

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Placement Evaluation

• Store on lower leg
• Scored the highest on the QFD
• Biggest place on the body to store the test
• Average female lower leg-18 inches
• Average male lower leg- 20 inches
• Can use the board to help lock the pole in place
• Safest location

23
References
Alpinism Ice Climbing www.bdel.comBlack
Diamond Equipment, Ltd. - Rock Climbing,
Backcountry Skiing, Leki www.leki.com Life-Link
www.life-link.comMaclean Quality Composites
www.macac.com Metal Express www.metalexpress.net S
cott USA www.scottusa.com