Welcome to the ShockClock

1- Introduction

1.1 Ultrasonic Transducer Principles

1.2 Standard vs. Pro Kit

1.3 Dirt vs. Street

1.4 Accessories

1.5 Computer Requirements

1.6 ShockClock Specs

1.7 General Safety

1.8 Warranty and Copyrights

1.9 Technical Support & Contact

2 - Installing PC Software

2.1 Uninstall Prior ShockClock Software

2.2 Install ShockClock Software

2.3 Installing a USB/Serial Adapter

2.4 Determine the COM Port Number

2.5 Perform a Trial Download

3 - Hardware

3.0 Hardware Overview

3.1 Dirt Bike Mounting

3.1.1 Front Transducer Mounting - Dirt

3.1.2 Rear Mounting - Laid-Down - Dirt

3.1.2.1 Laid-Down Transducer Geometry

3.1.3 Rear Mounting - Vertical - Dirt

3.1.4 ShockClock Mounting - Dirt

3.2 Road Race Mounting

3.2.0 Road Race Mounting Intro

3.2.1 Front Transducer - Conventional - RR

3.2.2 Front Transducer - Upside-Down - RR

3.2.3 Rear Transducer Mounting - RR

3.2.4 ShockClock Mounting - RR

3.3 Mountain Bike Mounting

3.3.0 Mountain Bike Mounting Intro

3.3.1 Front Transducer - MB

3.3.2 Rear Transducer - MB

3.3.3 ShockClock Mounting - MB

3.4 Adjusting the Tubes

3.5 Shortening the Tubes

3.6 Transducer Maintenance

4 - Using the ShockClock

4.1 Operate the ShockClock

4.2 Testing Tips

4.3 ShockClock Problems

5 - PC Software Basics

5.1 Startup Screen

5.2 Preferences

5.3 Downloading

5.4 Opening Files

5.5 Closing Files

5.6 File Information

5.7 Import Older Files

5.8 Export to Excel

5.9 Graph Basics

5.10 Set the Zero Point

5.11 Select Data Range

5.12 Notes

6 - Analysis

6.0 Analysis Intro

6.1 Single File Analysis

6.1.1 Bottoming (& Travel)

6.1.2 Travel & Velocity Overview

6.1.3 Waveform Analysis

6.1.4 Rebound Push Test

6.2 Comparing Files

6.2.1 Settings vs. Results

6.2.2 File 1 vs File 2

6.2.3 Travel Histogram

6.2.4 Velocity Histograms

6.3 Analysis Procedure

6.3.1 Troubleshooting

6.3.2 Analysis - Dirt - PDA

6.3.3 Analysis - Road Race

6.3.4 Analysis - Mountain Bike

7 - Measuring Static Sag

7.1 The Sag Concept

7.2 Sag Procedure

7.3 Calculating Sag

7.4 Sag Guidelines

8 - Leverage Ratio

8.1 The Leverage Ratio Concept

8.2 Mounting the Transducers

8.3 Leverage Ratio Measurement

8.4 Creating a Leverage Ratio File

8.5 Lowering or Raising a Bike

8.6.1 Leverage Ratio Comparison

8.6.2 Rear Wheel Force Comparison

8.7 Convert a ShockClock Recording

9 - Convert to Vertical - Dirt

9.0 Convert to Vertical Overview

9.1 Laid-Down Transducer Mounting

9.2 Laid-Down Transducer Geometry

9.3 Convert Data to Vertical

10 - PDA Help Guide - Dirt

PDA Getting Started

PDA About the ShockClock

PDA Tips

PDA Installing Software

PDA Create a Trial Recording

PDA Hardware

PDA Dirt Bike Mounting

PDA Front Transducer Mounting

PDA Rear Laid-Down Mounting

PDA Laid-Down Transducer Geometry

PDA Mountain Bike Mounting

PDA Front Mountain Bike

PDA Rear Mountain Bike

PDA Rear MB Laid-Down Geometry

PDA Operate the ShockClock

PDA Adjusting the Tubes

PDA Shortening the Tubes

PDA Transducer Maintenance

PDA Accessories

PDA Software

PDA Prefs

PDA Downloading

PDA Opening a File

PDA View Results

PDA Graph

PDA Peaks

PDA Settings & Notes

PDA File 1 vs File 2

PDA Closing Files

PDA Synchronizing Files with a PC

PDA Technical

PDA ShockClock Problems

PDA Technical Support & Contact

PDA ShockClock Specs

PDA Data Analysis

PDA Dirt Analysis

Glossary

Glossary of Software

Glossary Suspension Hardware

Troubleshooting Glossary

> Convert the data to Vertical using "Laid-Down Transducer Geometry".  PC - Dirt or PDA Software.  See 9 - Convert to Vertical - Dirt 

 

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> Measure the Laid-Down Transducer Geometry

> Measure with a metric tape from pivot center to center and input into Vehicle Preferences (Prefs/Setup). All distances are in millimeters (mm).

• L1 = Swingarm pivot to upper transducer pivot
• L2 = Upper transducer pivot to lower transducer pivot
• L3 = Exposed maximum transducer travel
• L4 = Swingarm pivot to lower transducer pivot
• L5 = Swingarm pivot to rear axle
• L6 = Perpendicular distance from swingarm centerline to lower transducer pivot (not necessarily the bracket length)
• L7 = Swingarm pivot to the ground (bike level) (accuracy not too critical)
• L8 = Rear axle to the ground (bike level) (accuracy not too critical)

 

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> Input Maximum Available Wheel Travel

See Vehicle Preferences

 

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> Conversion Test

• Input a Laid-Down Transducer Travel and it will display the corresponding Vertical Wheel Travel.  Note that when you input Transducer Travel that is too high the Wheel Travel displays "N/A".  What this means is that at some Transducer Travel the geometry is impossible mathematically.  This will also show you how much Transducer Travel you need for the Maximum Available Wheel Travel.

 

• It is possible to mount the Transducer in an impossible configuration. There must be enough Transducer Travel available as well. To check this, input the Transducer Mounting Measurements in Vehicle Preferences along with Maximum Wheel Travel. When you click the OK button it will check the configuration and give an error message if there is a mathematical problem. 

 

• It is also possible to mount the Transducer Head too low so it hits the swingarm before bottoming. Use a tape measure at the rear axle to indicate the available rear wheel travel. Lay a rod on top of the swingarm at the pivot up to the bottomed-out position of the swingarm. Make sure there is clearance.

 

• Axle position affects the maximum available wheel travel. If the axle is mounted forward the travel will be slightly less and if it is mounted to the back the travel will be slightly more. If you want to know exactly you must disassemble the shock, remove the Bottom-out Bumper, reassemble and mount the shock then measure the travel.