Contents 

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

Welcome To ShockClock

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8.4 Creating a Leverage Ratio File
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1. Open the Leverage Ratio Software 

Select Leverage Ratio Menu, Leverage Ratio Analysis. 

 

2. File Selection

Select the files to create the Leverage Ratio.

 

- Open the Shock file in File 1.

- Open the Wheel file in File 2.

 

Click “Next”

 

3. Wheel/Shock Curve Fit 

The Range Selection will automatically find the point where the shock has compressed by 2 mm.  This point is chosen so that free play in the linkage is eliminated from the measurement.  

 

You can experiment with different Start points.  

Click “Next”

 

4. View the Leverage Ratio Curve

The Leverage Ratio curve is created from the Shock and Wheel data.  The red dots are the “raw” Leverage Ratio points.  The blue line is the calculated Leverage Ratio Curve.

 

 - "Rising Rate" - The LR curve slopes down to the right even though the “Rise in Rate” is positive.  Because Leverage Ratio is defined as the Wheel Travel divided by the Shock Travel this “negative slope” gets stiffer as it gets deeper into the travel.  Therefore we have defined it as a “Rising Rate”.

5. Save the Leverage Ratio Curve

Click “Save LR File”.