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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5.2 Preferences
Previous Topic  Next Topic 

> General Preferences

“Preferences” greatly simplifies downloading and viewing records.  Setup Preferences before downloading.

 

> Click for Laid-Down Transducer Geometry

 

> Select File, Preferences or use the shortcut (Ctrl+Shift+P).

 

5.2.1 Setting the COM Port

In order for the ShockClock to communicate with the computer the COM Port must be selected properly.  COM 1 is the standard setting and will work for most Computers with a 9 pin Serial Port.  If your computer does not have a 9 pin Serial Port it probably has a USB Port.  If this is the case you will need an adapter see 2.3 Installing a USB/Serial Adapter.

 

A complete description of the adapter and how to determine which COM Port number to use can be found in 2.4 Determine the COM Port Number.  Only ports 1-9 may be used.


5.2.2 Limiting the Recording Length

During Download the maximum length of the recording can be limited in Preferences.  No matter what length recording is stored in the ShockClock, the end of the recording will be trimmed to the length set in Preferences.  1 min, 2.5 min, 5 min (suggested default), 10 min, and No Limit are the choices available.


5.2.3 Auto Erase ShockClock

By default the ShockClock Software automatically erases the ShockClock following each download.  You can override this feature by un-checking the "Auto Erase?" check box.  


5.2.4 General Preferences Guidelines

 

 

COM Port

Download Limit

Auto Erase

Dirt & Street

See 2.4

Determine the COM Port

5 min

ON


> 5.2.6 Default Vehicle Preferences

ShockClock Software lets you define up to six different Vehicle Types.  Preferences will be automatically applied on the next ShockClock download. 

 

> Create a Default Vehicle Type

Place your cursor into one of the fields in the Vehicle List and type the description you want to use.  Example: 06YZ450F or 06R6.  Set the Vehicle Type to Dirt or Street. 

 

> Select a Default Vehicle for Next Download

Click the “Select Default Vehicle for Next Download” pull down menu and choose the new Vehicle you just entered.


> Setup Default Vehicle Preferences - DIRT

For Street see Setup Default Vehicle Preferences - STREET

Once the Vehicle Type is selected click “Setup”.

 

 - Bottoming - Maximum Travel

This is the most critical of all setup numbers.  It affects bottoming counts, controls graph scaling and affects the Average Travel Percentage.  Enter the maximum available travel for the front and/or rear wheel where the transducer is making its measurement.  Check your vehicles user manual or website for assistance finding this value.  Note that sometimes the manufacturers numbers include Top-Out Spring travel.

 

  • 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.

 

 - "Hard Bottoms at" and "Soft Bottoms at"

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.

 

Hard and Soft Bottoming Points are setup as a percentage of maximum available travel.  The standard settings are 90% for the Soft Bottom Point and 95% for the Hard Bottom point.  Feel free to experiment with your own settings.

 


> Laid-Down Transducer Geometry - Dirt only

On Dirt and Mountain Bikes with Laid-Down Transducers you must "Convert the Data to Vertical".

 

> 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)

 

>Auto-Convert

Check the "Auto Convert" box to automatically convert the "Laid-Down" data into "Vertical" data upon download. 

 

NOTE: If you did not setup the software to auto-convert upon download you can still apply the Laid-Down Transducer Geometry using the "Convert to Vert" in the File Menu.  This will apply the current Default Vehicle Laid-Down Geometry in Vehicle Preferences to the data in File location 1 only.  (Measure the geometry of the Laid-Down Transducer with a tape measure and input it into the current Vehicle Type in Preferences before applying.)


> 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.

> Setup Default Vehicle Preferences - STREET

 

- Bottoming - Maximum Travel

This is the most critical of all setup numbers.  It affects bottoming counts, controls graph scaling and affects the Average Travel Percentage.  Enter the maximum available travel for the front and/or rear wheel where the transducer is making its measurement.  Check your vehicles user manual or website for assistance finding this value.  Note that sometimes the manufacturers numbers include Top-Out Spring travel.

 

  • 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. 

 

 - "Hard Bottoms at" and "Soft Bottoms at"

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.

 

Hard and Soft Bottoming Points are setup as a percentage of maximum available travel.  The standard settings are 90% for the Soft Bottom Point and 95% for the Hard Bottom point.  Feel free to experiment with your own settings.

 

 - Manual Offset - Street Only

Setting the Zero Point should be done before your first data run.  The Software doesnt know where the Zero Point is unless you tell it or you let it find it itself.   If the slide switch is set to "Dirt", the software finds an average of the lowpoints and sets this to zero automatically but the Street setting does not.  See 5.10 Set the Zero Point.


 - Default Vehicle Preferences Guidelines

 

 

Maximum Travel

Hard Bottom Point

Soft Bottom Point

Manual Offset

Dirt

Per Application

95%

90%

N/A

Street

Per Application

95%

90%

See 5.10 Set the Zero Point