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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PDA View Results
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> Select "View" form the "Main Menu".  It will take a little while (about 10 seconds) to calculate the values, be patient. The Bottoming Tab is the first screen displayed. 

 

> This section covers the Bottoming TabTravel Tab, and Velocity Tab.

 

> Auto Zero Point Detection (Off-Road Use Only)

NOTE ABOUT THE ZERO POINT: Full extension of the suspension is the “Zero Point”. Travel is the distance up from full extension. How does the ShockClock know where full extension is?  The ShockClock Software looks through the recording and finds the average of the lowest points. The reason it does this instead of simply taking the absolute lowest point is there are top-out springs and flex in the system. The average of the lowest points works better than the absolute lowest point.

 

This process works great for dirt bikes because the suspension pretty much always gets fully extended at least one time during the recording.  However this is not acceptable for road racing and therefore this software is for dirt only.


>Bottoming Tab

 

 - Maximum Available Travel

Maximum travel is the basis of many of the automatic measurements.  It also controls graph scaling on many graphical screens. The default value for Maximum Travel should be set in Prefs prior to a Download.  Maximum Available Travel can be adjusted for the individual file only on the “Bottoming” tab.  Remember; changes are not saved automatically in the PDA.

 

Check your vehicles user manual for assistance finding the Maximum Travel.

 

 - Bottoming Counters

How many times the suspension bottoms as well as how hard it bottoms is critical information.  We have invented something called a “Soft Bottom” and a “Hard Bottom”.  The idea is that Soft Bottoms can be OK but Hard Bottoms are generally not good as this is close to metal-to-metal.

 

The software automatically counts the number of Soft and Hard Bottoms independently and displays the total.

 

 - Bottoming Points Setup 

Hard and soft bottoms are setup as a percentage of Maximum Available Travel.  The default settings for Hard and Soft Bottoming Points should be setup in Prefs under Vehicle Type Setup prior to a Download.  They can also be adjusted for the individual file only on the “Bottoming” Tab. Our default settings for Hard and Soft Bottom Points are 95 and 90% of full travel. Feel free to experiment with these numbers.


> Travel Tab

 

 - Adjusted Average Travel

Average Travel is a number that can be compared between front and rear as well as between different settings and tracks.  Pay attention to this to create “sweet zone” numbers for different riders and tracks. Travel is displayed in millimeters as well as a percent of the total available travel.

 

Off road vehicle tires leave the ground frequently.  While the vehicle is in the air the suspension is fully extended.  On tracks with lots of jumps this air-time can skew the average travel measurement to a lower number. ShockClock Software automatically removes the “Air-time” for the average travel calculation.  

 

 - Peak Travel

This is the maximum travel used in the entire recording in millimeters (mm).  It tells at what Time it occurs in seconds from the beginning of the run.  This peak will be displayed as the #1 peak when you tap the "Peaks" button.

 

 - Average Peak Travel

The top 10 peak values are averaged.  This is far more meaningful than just looking at the single peak value.


> Velocity Tab

 

This screen displays:

  • Average Compression Velocity (M/s) 
  • Average Peak Compression Velocity (average of the 10 highest peaks)
  • Average Rebound Velocity (M/s)
  • Average Peak Rebound Velocity (average of the 10 highest peaks)