Olympic lifting technique blocks - UC DRC Home

OLYMPIC LIFTING TECHNIQUE BLOCKS

A Baccalaureate thesis submitted to the School of Dynamic Systems

College of Engineering and Applied Science University of Cincinnati

in partial fulfillment of the

requirements for the degree of

Bachelor of Science

in Mechanical Engineering Technology

by

Tyler Higgins

April 2014

Thesis Advisor: Professor Ahmed Elgafy

ii

ACKNOWLEDGEMENTS I would like to thank CrossFit Gambit for the guidance and motivation behind the

concept, Dave Conrad for helping me machine the parts, Dr.Ahmed Elgafy for his guidance

throughout the process and Chris Brummet for the material source.

TABLE OF CONTENTS

OLYMPIC LIFTING TECHNIQUE BLOCKS ....................................................................... 1

ACKNOWLEDGEMENTS ...................................................................................................... II

TABLE OF CONTENTS .......................................................................................................... II

LIST OF FIGURES ................................................................................................................ III

LIST OF TABLES .................................................................................................................. III

ABSTRACT ............................................................................................................................ III

INTRODUCTION .................................................................................................................... 1

BACKGROUND ..................................................................................................................................................... 1 CURRENT MARKET DESIGNS ............................................................................................................................... 2

CUSTOMER FEEDBACK, FEATURES, AND OBJECTIVES ............................................. 4

SURVEY ANALYSIS .............................................................................................................................................. 4 PRODUCT FEATURES AND OBJECTIVES ................................................................................................................ 5

CONCEPT GENERATION AND SELECTION ..................................................................... 6

RIG GENERATION AND SELECTION ..................................................................................................................... 6 BLOCK GENERATION AND SELECTION ................................................................................................................ 7

CALCULATIONS .................................................................................................................... 8

STRESS ANALYSIS .............................................................................................................................................. 8 COLUMN BUCKLING ........................................................................................................................................... 8 CROSS-MEMBER BENDING ................................................................................................................................. 9 PIN SHEAR .......................................................................................................................................................... 9 PLATFORM BENDING ........................................................................................................................................ 10 BLOCK BENDING .............................................................................................................................................. 11

ASSEMBLY DESIGN DETAILS .......................................................................................... 12

ASSEMBLY PROCEDURE ................................................................................................................................... 12

TESTING ................................................................................................................................ 14

TESTING PROCEDURE ....................................................................................................................................... 14

SCHEDULE AND BUDGET ................................................................................................. 15

REFERENCES ....................................................................................................................... 17

APPENDIX A - RESEARCH ................................................................................................. 18

APPENDIX B – SURVEY ..................................................................................................... 22

APPENDIX C – QFD ............................................................................................................. 23

iii

APPENDIX D – OBJECTIVES ............................................................................................. 24

APPENDIX E – SCHEDULE ................................................................................................ 25

APPENDIX F – BUDGET ..................................................................................................... 26

LIST OF FIGURES Figure 1 - Catalyst DIY Technique Blocks............................................................................... 2

Figure 2 – Rogue Fitness Jerk Blocks....................................................................................... 2

Figure 3 – Monster Blocks ........................................................................................................ 3

Figure 4 – Rig Design ............................................................................................................... 6

Figure 5 - Original Platform Design ......................................................................................... 7

Figure 6 - Redesigned Block ..................................................................................................... 7

Figure 7 - Column Buckling ..................................................................................................... 8

Figure 8 - Column Buckling Hole View ................................................................................... 9

Figure 9 - Cross-Member Bending ........................................................................................... 9

Figure 10 - Pin Shear .............................................................................................................. 10

Figure 11 - Platform Bending ................................................................................................. 10

Figure 12 - Platform Column Bending ................................................................................... 11

Figure 13 - Parts ...................................................................................................................... 12

Figure 14 - Full Assembly ...................................................................................................... 13

LIST OF TABLES Table 1- Schedule ................................................................................................................... 15

Table 2 - Budget...................................................................................................................... 16

ABSTRACT

The report that follows documents the methods and procedures that occurred in the

process of developing and constructing the Olympic Lifting Jerk Blocks. The purpose of the

project is to provide a product that relieves the issues with current products. By combining

the multi-use of a CrossFit rig and the single purpose use of Olympic lifting blocks, an all-

inclusive, easy to operate product will result. This was done by taking a customer survey

from a field of athletes to gauge what was most important to them. Industry standards were

reviewed and taken into consideration and the intended audience was CrossFit enthusiasts

and Olympic weight lifters. The project resulted in a robust and functional product that was

received well by the audience. With a majority of the time spent on machining the product, it

is recommended to outsource this step of the project. Overall the project performed its intent

successfully by creating an effective piece of training equipment.

Olympic Lifting Technique Blocks Tyler Higgins

1

INTRODUCTION

BACKGROUND

Since its official introduction in 2007, CrossFit has become the official sport of fitness.

By incorporating several aspects of fitness into one lumped sum, the ability to excel in the

sport derives from countless hours of practice and movement repetition. This is most

represented in the Olympic lifting portion of CrossFit.

Olympic lifting in itself requires years to perfect. This can be seen in the athletes that

undergo the grueling sport during the Olympics. One of the best ways to perfect the complex

movements of the snatch and the clean and jerk is to break them down into smaller

movements (1). Athletes and coaches achieve this by using platforms that support the weight

from various heights so that they may focus on one section of the full movement at once.

Building something that is intended to support the dropping of weight that can near over

500lbs from overhead naturally causes the structure to be heavy. The main issue with current

designs is their mass. (2). Most current models are difficult to move and change heights (3).

This is an important issue because it is inefficient for an athlete to expend energy setting up

to train when the energy should be spent on the training itself.

The focus of this design project is to re-design the components and height modification

method in order to reduce the weight and enable the athlete to use more time and energy on

training rather than setting up for training.


2

CURRENT MARKET DESIGNS

Although the market for technique blocks is very small, the demand for them is

relatively high. CrossFit boxes and Olympic lifting gyms desire this equipment for their

athletes to train on. The most common way that the product is acquired is by building it

themselves. As seen in Figure 1 (1), the design for the “do it yourself” is relatively simple

and cheap (4). The downside to this process is it is very time consuming and requires several

tools to construct that, if the builder does not already have, can add a significant amount of

cost to the job. In addition to cost, the amount of time spent building the blocks is lost

training or coaching time which leads to another additional project cost.

Figure 1 - Catalyst DIY Technique Blocks

Numerous designs and instructions are posted on the web. Figure 1 (1) is the most

common design shown. Some companies have taken the manual labor out of these designs by

producing their own versions. Rogue Fitness is the leading producer of CrossFit equipment

and has recently added jerk blocks to their extensive list of products (5). Although they have

very similar construction to the DIY blocks, they are almost three times expensive. The most

important advantage of the Rogue product is that is guaranteed for life. The upfront cost is

significantly higher than the DIY build buy pays of if upkeep is needed in regards to repairs.

Figure 2 – Rogue Fitness Jerk Blocks


3

Only one other company offers jerk blocks in their product line. Monster blocks are

very similar to the two previous designs but implement a dovetail construction method. This

reduces weight but not cost. At $1223 for the complete set, they are the most expensive

available option. The interlocking design is secure and innovative but its functionality is in

question. Figure 3 (3) shows the Monster Blocks fully assembled. One benefit of this product

is its customizing option (6). They offer an option of branding the equipment with any

uploaded image.

Figure 3 – Monster Blocks


4

CUSTOMER FEEDBACK, FEATURES, AND OBJECTIVES

SURVEY ANALYSIS

Twenty customer surveys were returned and analyzed to determine the customer needs.

The surveys were completed by CrossFit athletes and coaches that have experience using jerk

blocks. Several have had experience with the current market products and offered additional

information in terms of what they would like to see in the product. The survey included a

wide range of product features that related to the weight, cost, maintenance and performance

of the product. The top half of the survey questioned the importance of these features using a

scale of 1-5 with 5 being the most important. The bottom half of the survey questioned the

customers’ satisfaction with their current product using the same scale regarding the same

features.

Cust

om

er

import

ance

D

esig

ner

's

Mult

ipli

er

Curr

ent

Sat

isfa

ctio

n

Pla

nned

Sat

isfa

ctio

n

Impro

vem

ent

rati

o

Modif

ied

Import

ance

Rel

ativ

e w

eight

Rel

ativ

e w

eight

%

Lightweight 4.2 1 2.4 5 2.1 8.8 0.15 15%

Low Cost 4.6 1 4.1 3.5 0.9 3.9 0.07 7%

Stability 4.5 1 2.5 5 2.0 9.0 0.15 15%

Low Maintenance 4.6 1 4.1 4 1.0 4.5 0.07 7%

Easy to Clean 3.8 1 3.2 4 1.3 4.8 0.08 8%

Easy to operate 4.1 1 2.1 5 2.4 9.8 0.16 16%

Reliable 4.7 1 1.2 5 4.2 19.6 0.32 32%

Abs. importance 60.3 1.0 1.0

When determining the designer’s multiplier the value of one was chosen. The results that

came from the survey accurately reflected the customer’s importance and a multiplier was

not needed for any category. The main focus of the project will be to make it lightweight.

This intent is reflected by selecting a planned satisfaction number of 5. Stability, easy to

operate, and reliable also received a planned satisfaction number of 5 as those will be the

designs main focuses throughout the process. Cost, low maintenance, and easy to clean

received lower numbers in regards to planned satisfaction because they are less important to

the customer or will be directly affected due to putting stability and lightweight as a priority.

The planned satisfaction numbers directly reflect my expectations as a designer in regards to

customer feedback.

Tyler Higgins Olympic Lifting

Technique Blocks 5 = Strong 3 = Moderate 1 = Weak


5

PRODUCT FEATURES AND OBJECTIVES

OBJECTIVES

The following information is a description of the key features for Olympic Lifting Technique

Blocks as provided by various customers through surveys. The information is organized by providing

a list of customer features. Generic features have sub features that can altered during the design phase

and proven during the testing phase. Numerical targets of improvements are provided.

Reliable 29%

Height range

Durable contact surfaces

Non slip contact surfaces

Minimal upkeep

Operates every time

No prep work

Stability 17%

Level surface

Height change synchronization

Foot attachments

Lightweight 16%

Material selection

Number of parts

Easy to operate 14%

Weight of individual boxes

Handle grooves

Latches to join sections

Easy pin assembly/disassembly

Easy to clean 9%

Cleaning supplies included

Basket for holding cleaning supplies

Contact area with floor

Low maintenance 8%

Material selection

Working surface composition

Moving parts composition

Number of automated parts

Number of moving parts

Low cost 7%

Material selection

Movement method


6

CONCEPT GENERATION AND SELECTION

The concept generation and selection was broken down into two separate stages,

reflecting the two major component of the project. The first being the rig and the second

being the blocks. From these concept generations and specifications, a product selection was

developed.

RIG GENERATION AND SELECTION CrossFit rigs are versatile pieces of equipment and are often regarded as adult jungle

gyms. With an ever expanding market for these equipment items, the most common sizes

were researched. Columns of 2”x3” square tubing, 1.25” rod, and 5/8” holes were researched

as an industry standard. These standards were utilizes with the intent of cross collaboration

with products already purchased and on the market. Many accessories to these rigs are

outfitted using these specifications so these were the needed generalizations to begin

selection.

Several items were taken into consideration when selecting the final design of the rig.

Height was decided based on the movement allowance and space occupancy of current jerk

blocks. Length and width were designed around the length of the loading portion of the

barbell and two separate units would be used to allow mobility. These two units could be

joined by a cross-member if desired. The structure was chosen to allow for maximum

customization by the customer.

Figure 4 – Rig Design


7

BLOCK GENERATION AND SELECTION Olympic lifting blocks are widely used in the sport of Olympic lifting. The most

common construction for these items was wood. The reason for this is wood has the ability to

absorb and distribute the force acted on it better than rigid steel does. The blocks that are

made of steel tend to me complicated to adjust but serve as a very stable and reliable

structure. With these items in mind, the concept for the blocks construction would be made

of steel.

Once steel was decided to be the main component of the block, the selection for the

design began. By making the block out of the same material that was used for the columns,

cost could be reduced and the overall look and feel of the structure would be more uniform.

Initially the top was going to be made of wood adhered to four separate sleeves that would

slide over the columns but this did not allow for easy removal and was not as strong as it

needed to be. The next design incorporated a 2-beam structure that was joined by cross

members and could be topped by with any surface material.

Figure 5 - Original Platform Design

Figure 6 - Redesigned Block


8

CALCULATIONS

STRESS ANALYSIS Due to the nature of the project, all calculations were stress based. All calculations were

done using SolidWorks analysis program. The material for each part was selected and a load

of 400 pounds was used to calculate the stress of each component. In instances where the

load would be dispersed it was assumed that it would be done so evenly. A factor of safety of

12 was used due to the repeated impact load being applied to the parts.

COLUMN BUCKLING Each rig was designed using four 2”x3”x9’ square columns. Attached at the base was a

steel plate that increased the contact surface area to allow for a more stable design. Each

column would be loaded with 100lbs assuming the force was equally displaced and had a

yield strength of 68,167psi and a buckling stress of 8,000psi

Figure 7 - Column Buckling


9

Figure 8 - Column Buckling Hole View

CROSS-MEMBER BENDING Each rig is comprised of two 4’ cross-members and two double 2’ cross-members. The

longer cross members would prove to be the weaker of the two. Tested with a load of 250

lbs, these cross-members had a yield strength of 68,000psi and a bending stress of 24.000 psi.

Figure 9 - Cross-Member Bending

PIN SHEAR The block platform is secured to the rig by four zinc-coated handle pins. These pins are

exposed to shear stress and a repeated load. They were tested at a total load of 400lbs which

would equate to an individual load of 50lbs per pin. The yield strength for the pins was

68,000psi and the shear stress put in place was 2,600 psi per pin. The model shows the stress

values for the comprehensive load of 400lbs.


10

Figure 10 - Pin Shear

PLATFORM BENDING The platform itself is interchangeable with any material that the athlete sees fit.

Typically a rubber matting or wood will be used for the contact surface. For this analysis,

steel plate was used in uniform with the rest of the rig. With a yield strength of 68,000 psi

and a bending stress of 2,257 psi per platform.

Figure 11 - Platform Bending


11

BLOCK BENDING The blocks were secured to rig by pins and would experience a bending stress of 50lbs at

each corner. With an overall load of 400lbs being dispersed to eight corners, the block

columns had a yield strength of 68,000 and a bending stress of 7,824 psi per block. The

model demonstrates an impact load of 400lbs per column.

Figure 12 - Platform Column Bending


12

ASSEMBLY DESIGN DETAILS

ASSEMBLY PROCEDURE Assembly of the rig is intended to be very easy. All hardware is 5/8” which is an

industry standard. Customers purchasing the rig will only need a 15/16” socket, 15/16”

wrench, 9/16” driver and a 3/8” concrete drill. Once the rig is assembled using the hardware,

it will be placed where it will remain. Then the concrete holes will be drilled and the concrete

anchors will be used to keep the feet in place. The platforms can then be added and moved to

various heights using the pull pins. The platforms can also be completely removed and the rig

can be used without their obstruction.

Figure 13 - Parts


13

Figure 14 - Full Assembly


14

TESTING

TESTING PROCEDURE Upon assembly completion, the rig was tested by various athletes in all aspects of the

rigs capabilities. The ease of use was discussed with the athletes who used it a rated in

comparison to other products. The versatility of the rig was also rated and compared. The

nature of the use of the rig opens it up to ongoing testing. Simply using the product is a

means of testing and improvements will be documented as they arise.


15

SCHEDULE AND BUDGET

The project begins October 14th

, 2013 with the proof of design agreement with Professor

Elgafy. The project continues until April 14th

, 2014 where it will be presented at the expo.

The brief timeline below shows general steps and dates.

Table 1- Schedule

Oct. Nov. Dec. Jan. Feb. Mar. Apr. May

FabricationAssembly

Bill of MaterialsShop DrawingOrder PartsReport Due to Adv isorOral ReportFabrication

3D Models-Animation

Design CalculationsDesign Freeze

Report Due3D Models

-Sections-Motion Systems

Schedule 2013-2014

Proof of DesignConcepts

TestingModificationAssemblyFinal TestingAdv isor Demo

ExpoOral ReportProject Report


16

Budget Summary for Olympic Lifting Technique Blocks

Materials / Components / Labor Projected Cost Actual Cost

Steel Rod 300 885.06

Aluminum Sheets 50 -

Lumber 100 -

Hardware 50 119.75

Rubber Feet 25 -

Miscellaneous 40 -

Subtotal 565 1004.81

Table 2 - Budget

.


17

REFERENCES

1. Essig, Andrew. CrossFit Gambit: Owner/Trainer/Athlete. St.Louis, July 21, 2013.

2. Jackson, Kelley. Crossfit Gambit: Trainer/Athlete. St.Louis, August 12, 2013.

3. Laux, Carl. University of Cincinnati Thrower. Cincinnati, September 1, 2013.

4. Catalyst Athletics. Catalyst Athletics. Catalyst Athletics. [Online] Catalys Athletics.

[Cited: September 4, 2013.]

http://www.catalystathletics.com/articles/article.php?articleID=52.

5. Rogue Fitness. Rogue Wood Jerk Blocks. Rogue Fitness. [Online] Rogue Fitness. [Cited:

September 2, 2013.] http://www.roguefitness.com/rogue-wood-jerk-

blocks.php?gclid=COnLiZD0sLkCFcU7MgodQCoAUQ.

6. Monster Blocks. MonsterBlocks. Breathe Later Fitness. [Online] Monster Products.

[Cited: September 2, 2013.] http://www.breathelaterfitness.com/product/monsterblocks/.

18

APPENDIX A - RESEARCH

Interview with CrossFit Gym Owner, Andrew Essig of CrossFit Gambit. 711

Soulard St. St.Louis, MO 63104 07/21/13

Has owned the gym for 3 years and was a personal trainer before opening the

gym. Has taken the Attitude Nation lifting seminar with Jon and Jessica North.

Has built jerk blocks that are currently in his gym but are not being used due to

malfunctions. Biggest issue is warping and disassembly when the weights are

dropped.

Would like to see another material used other than wood, something sturdier.

Another issue is mobility. Recent blocks have been bulky and require two

people to alter the height and location of the blocks.

Price would increase based on material improvements but gyms wouldn’t mind

paying higher cost for great product.

Says he could see this being used in CrossFit gyms and Olympic lifting gyms

depending on how well it’s made and marketed.

Important features to include: mobility, weight, ease of use, possible

automation, material, ease of maintenance, simplicity, durability.

Thinks no one has put this effort towards blocks due to pricing and

manufacturing difficulty but would be interested to see what I come up with.

Interview with CrossFit Athlete, Kelley Jackson: 2641 Wyoming St. St. Louis,

MO 63118 08/12/13

She has competed in CrossFit for three years and has placed top 6 in her region

all three years.

Technique blocks have helped her progress in her sport and loves using them

during training. During trainer time is a huge issue and moving the blocks to

different heights is very time consuming and an inefficient use of energy.

Would like to see blocks that are fast to adjust and easy to move.

Important features to include: minimal pieces, fast moving, light, user friendly

if automated

Really focused on being able to move the blocks by herself fast.

Interview with University of Cincinnati Thrower, Carl Laux,: 319 Probasco St.

Cincinnati, OH 45220 09/01/13

Carl uses Oly training equipment in the off season and throughout the season

to train. He and his fellow athletes find the lifts to improve their performance

in the sport. Although they don’t necessarily need the blocks to improve their

lifts (because they are not testing the actual lift) he would find the blocks

useful as racks for lifting.

Durability and fast height changes would be key components as different

height athletes would be using the equipment.

Important features to include: stability of the blocks when weights is dropped,

height variability to accommodate different athletes and total unit mobility to

move the whole thing.

Overall, a sturdy mobile unit is preferred. For his use, multiple increments are

not needed.

19

Rogue Wood Jerk Blocks

The Rogue Jerk Blocks are one of the few jerk blocks that are

manufactured for sale to the public. They are very similar to the

online DIY plans you can find online. They are (36”) in length and

(20”) in width. Heights vary and the top decks have stoppers.

Crafted in Columbus,

OH

Lifetime warranty

Functional variable

heights

Can be made by

anybody

Expensive

$1111.35 USD (all add-

ons)

http://www.roguefitness.com/rogue-wood-jerk-

blocks.php?gclid=COnLiZD0sLkCFcU7MgodQCo

AUQ 09/02/13

Rogue Wood Jerk Blocks

Fully CNC machined, Rogue’s Ohio-built Wood Jerk Blocks deliver a level of craftsmanship

and stability simply not achievable with traditional DIY jerk boxes. Available in four different sizes—15”, 12”, 6”, and 2.25”— each Rogue Jerk Block features 1.5” double-wall

construction and interior bracing, along with strategically aligned insets for ultra secure

stacking.

Stackable jerk boxes, or jerk blocks, are most often utilized in weight training as a way for

athletes to focus on improving their jerk without having to clean the weight to the rack position on each rep. With their combined durability and ease of use, however, Rogue’s

various Jerk Block sets provide a wealth of other potential uses: block pulls, clean/snatch

from blocks, partial deadlifts, floor presses, step ups, box jumps.

Rogue Wood Jerk Block Individual Size Specifications:

15" Block - 70 lbs - 36"L x 20"W x 15"H

12" Block – 61 lbs - 36"L x 20"W x 12"H

6" Block - 38 lbs - 36"L x 20"W x 6"H

2.25" Block - 25 lbs - 36"L x 20"W x 2.25"H *This size can be used as the top block of a stack only.

Other Specifications:

Made in Columbus, OH, USA

CNC machine cut for perfect fit

Hand slots included on 15”, 12”, and 6” for easy moving/carrying

Blocks ship fully assembled

http://www.roguefitness.com/rogue-wood-jerk-blocks.php?gclid=COnLiZD0sLkCFcU7MgodQCoAUQ



20

MonsterBlocks

MonsterBlocks don’t have many reviews and seem difficult to

assemble. Their initial price is 975 but if you want a full set it is

1223.

Product Description

MonsterBlocks ”The Worlds Only Interlocking Olympics Lifting Blocks”

They are designed to be used for snatch work, shoulder press, push push and

push jerk.

They can also be used as spotting block set to your height for any lift.

Full Set Includes:

2 4-Layer lids (Approx. 57 lbs each)

2 5-Inch Blocks (Approx. 15 lbs each)

6 10-Inch Blocks (Approx. 30 lbs each)

Additional pairs of 5 inch or 10 inch Block sections can be added at

checkout if needed

The MonsterBlocks can be set to any height from

Stackable in 5 inch increments between 7.5 – 37.5 with lids

Additional Blocks available for very tall athletes in 5 or 10 inch

sections

Customizable to your facility with logos applied to all short ends of

the 10 inch blocks

Built with 1.5 inch full cut screws in blocks and premium grade

hardware for lids

Stacks in one tall column for easy storage and space saving

Cut in handles for easy section adjustment and moving of blocks

Dovetail assembly

Lifetime warranty

Customizable with logo

Less attractive

Confusing assembly

concept $1223 USD (all add-

ons)

http://www.breathelaterf

itness.com/product/mon

sterblocks/ 09/02/13

http://www.breathelaterfitness.com/product/monsterblocks/



21

DIY – Catalyst

Seemingly the last option is DIY. Only two companies offer jerk

boxes and several forums offer DIY instructions. Below is one.

Jerk blocks are a somewhat mythical piece of equipment—their numbers are extremely small and there appears to be a constant search for plans to build them. After two years of Aimee busting my chops to build her some, with the new gym and the corresponding space, I found myself with no further excuses to put it off. The design I ended up with is not really anything new—build multiple blocks that stack on top of each other to allow adjustment of the final height to accommodate different athletes. This is the same basic design used by Les Simonton, which is where I got the idea. These blocks are on the small side—they’ll easily fit on a standard 8x8’ platform with 2’ wide rubber on each side—but they’re big enough in our experience. This size makes them a bit more manageable in terms of relocating them to free up the platform on which they normally reside and for changing the height. If you want larger blocks, just adjust the measurements below. The nice thing about this type of block setup is that they can be used as pulling blocks as well - as low as about 14". The total cost on the blocks was somewhere around $300, not including the gas for multiple trips to Lowes to compensate for my lack of planning, plus several years off my life. What You’ll Need

Basically: An obscene amount of wood, screws and bolts Specifically: - (7) 2x10x12 - (4) 2x8x12 - (4) 2x6x12 - (4) 4x4x12 - (2) 2x4x8 - (2) ¾ x 8 x 10 pine - (4) ¾ x 1 ½ x 8 pine - (1) 4x6 ¾” rubber horse stall mat (or scraps = (2) 2x4 sections) - (4) sturdy metal gate handles - ~280 3” drywall screws - ~160 1.25” drywall screws - ~160 3.5” x 5/16” lag screws

DIY

Requires tools/labor

Cheaper than purchasing

Customizable

No warranty

Difficult to construct

well

Warping occurs often

Heavy

$300 USD

http://www.catalysta

thletics.com/articles/

article.php?articleID

=52 09/04/13

http://www.catalystathletics.com/articles/article.php?articleID=52




22

APPENDIX B – SURVEY

OLYMPIC LIFTING TECHNIQUE BLOCKS

CUSTOMER SURVEY with Results

The purpose of this survey is to identify the key qualities necessary in building the best

Olympic lifting technique blocks. Results from this survey will have direct impact on the

design of the blocks.

How important is each feature to you for the design of Olympic lifting technique

blocks?

Please circle the appropriate answer. 1 = low importance 5 = high importance Avg

Lightweight 1 2 3(2) 4(12) 5(6) N/A 4.2

Stable under heavy loads 1 2 3(1) 4(5) 5(14) N/A 4.6

Low maintenance 1 2 3 4(10) 5(10) N/A 4.5

Easy to clean 1 2 3(2) 4(5) 5(13) N/A 4.6

Easy to operate 1 2 3(8) 4(8) 5(4) N/A 3.8

Low cost 1 2(1) 3(5) 4(5) 5(9) N/A 4.1

Reliable 1 2 3(2) 4(2) 5(16) N/A 4.7

How satisfied are you with the current Olympic lifting technique blocks?

Please circle the appropriate answer. 1 = very UNsatisfied 5 = very satisfied Avg

Lightweight 1(5) 2(3) 3(12) 4 5 N/A 2.4

Stable under heavy loads 1 2 3(3) 4(13) 5(4) N/A 4.1

Low maintenance 1(1) 2(9) 3(10) 4 5 N/A 2.5

Easy to clean 1 2 3(8) 4(3) 5(9) N/A 4.1

Easy to operate 1 2 3(18) 4(1) 5(1) N/A 3.2

Low cost 1 2(17) 3(2) 4(1) 5 N/A 2.1

Reliable 1(15) 2(5) 3 4 5 N/A 1.2

How much would you be willing to spend on this piece of equipment?

$50-$100(8) $100-$200(8) $200-$500(4) $500-$1000 $1000-$2000

Thank you for your time.

23

APPENDIX C – QFD

Material selction

Number of parts

Movement method

Level surface

Height change synchronication

Foot attachments









Latches to join section



Quick pin assem/disasemm

Height range for all athlete sizes

Handle grooves

Customer importance

Current Satisfaction

Planned Satisfaction

Improvement ratio

Modified Importance

Relative weight

Relative weight %

Lig

htw

eig

ht

94

21

22

74

4.2

2.4

52.1

8.8

0.1

616%

Low

Cost

92

45

83

11

62

32

4.6

4.1

3.5

0.9

3.9

0.0

77%

Sta

bili

ty3

29

11

11

4.5

2.5

52.0

9.0

0.1

717%

Low

Main

tenance

44

54.6

4.1

41.0

4.5

0.0

88%

Easy t

o C

lean

53

32

66

54

3.8

3.2

41.3

4.8

0.0

99%

Easy t

o o

pera

te5

43

45

45

94.1

2.1

41.9

7.8

0.1

414%

Relia

ble

12

12

35

4.7

1.2

43.3

15.7

0.2

929%

Abs.

import

ance

3.6

51.0

51.6

62.6

40.7

20.5

90.1

70.6

90.9

00.7

30.7

40.6

00.6

01.7

00.7

91.1

71.0

91.6

52.3

71.4

425.0

54.4

1.0

1.0

Rel. im

port

ance

0.1

50.0

40.0

70.1

10.0

30.0

20.0

10.0

30.0

40.0

30.0

30.0

20.0

20.0

70.0

30.0

50.0

40.0

70.1

00.0

61.0

Tyle

rHig

gin

sO

lym

pic

Lift

ing

Tech

niq

ue

Blo

cks

9=

Stro

ng

3 =

Mo

de

rate

1 =

We

ak

24

APPENDIX D – OBJECTIVES

OBJECTIVES

The following information is a description of the key features for Olympic Lifting Technique

Blocks as provided by various customers through surveys. The information is organized by providing

a list of customer features. Generic features have sub features that can altered during the design phase

and proven during the testing phase. Numerical targets of improvements are provided.

Reliable 29%

Height range



Minimal upkeep

Operates every time

No prep work

Stability 17%

Level surface

Height change synchronization

Foot attachments

Lightweight 16%

Material selection

Number of parts

Easy to operate 14%


Handle grooves

Latches to join sections

Easy pin assembly/disassembly

Easy to clean 9%




Low maintenance 8%

Material selection





Low cost 7%

Material selection

Movement method

25

APPENDIX E – SCHEDULE

Tyler Higgins

Olympic Lifting Technique Blocks

Tasks

Oct

14

-20

Oct

21

-27

Oct

28

- N

ov

3

No

v 4

- 1

0

No

v 1

1 -

17

No

v 1

8 -

24

No

v 2

5 -

Dec

1

Dec

2 -

8

Dec

9 -

15

Dec

16

-2

2

Dec

23

- 2

9

Dec

30

- J

an 5

Jan

6 -

12

Jan

13

-1

9

Jan

20

- 2

6

Jan

27

- F

eb 2

Feb

3 -

9

Feb

10

- 1

6

Feb

17

- 2

3

Feb

24

- M

ar 2

Mar

3 -

9

Mar

10

-1

6

Mar

17

-2

3

Mar

24

- 3

0

Mar

31

- A

pr

6

Ap

r 7

- 1

3

Ap

r 1

4 -

20

Ap

r 2

1 -

27

Proof of Design Agree (advisor) 22

22

Concepts/Selection (advisor) 22

22

Report Due 2

3

3D Model - (Sections) 5

8

3D Model - (Motion System) 19

22

3D Model - (Animation) 3

5

Design Calculations 10

20

Design Freeze 15

15

Bill of Materials 11

1

Shop Drawing 11

1

Order Parts 11

1

Report Due to Advisor 18

Oral Report 18

Fabrication 28

16

Assembly 11

16

Testing 1

16

Modification 15

20

Final Testing 22

20

Advisor Demonstration 25

25

Expo 44

Oral Report 77

Project Report 14

17

26

APPENDIX F – BUDGET

Budget Summary for Olympic Lifting Technique Blocks

Materials / Components / Labor Projected Cost Actual Cost

Steel Rod 300 885.06

Aluminum Sheets 50 N/A

Lumber 100 N/A

Hardware 50 119.75

Rubber Feet 25 N/A

Miscellaneous 40 N/A

Subtotal 565 1004.81

27

28

29

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