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We offer a Leverage Ratio Measurement Kit (MSLR 01) for the ShockClock Pro Kits (2 ShockClocks are required). The kit includes a special Transducer Wave-Guide Tube to adapt the Transducer Head into a Shock Mounted Leverage Ratio Transducer as well as an Unlock Code to access the Leverage Ratio Software.
> The Leverage Ratio Software has three main functions. 1. Create Leverage Ratio (LR) Files and Motion Ratio (MR) Files 2. Compare Leverage Ratio and Wheel Force Files 3. Convert ShockClock Recordings
> Software Activation The Leverage Ratio Module requires a software-unlock-code that is supplied with the Leverage Ratio Kit. Click the Leverage Ratio Menu, Leverage Ratio Analysis to bring up the “LR Activation” screen. Enter the unlock code.
> “Back in the day” shocks were mounted at the rear axle and life for the suspension tuner was simple. Just setup the suspension based on bike and rider weight and type of use. Along came long travel and linkages and life became a little more complicated.
What if the suspension could be soft on the little bumps and stiff on the big bumps? This is the main idea behind linkages. Linkages can make the Leverage change through the stroke.
> Leverage Ratio is defined as:
LR = Change in Wheel Travel / Change in Shock Travel
also
LR = Shock Force / Wheel Force
By measuring Wheel Travel and Shock Travel simultaneously, we can calculate the Leverage Ratio with the Software.
Don’t expect to be an expert by doing one Leverage Ratio Curve. When I did my first one back in 1980 I looked at it and thought, “huh?” Now, after doing hundreds of curves they make a lot more sense.
> Rear Wheel Force Curves From Leverage Ratio we can determine Rear Wheel Force if we know the Spring Rate and the Preload (Rear Wheel Force = the force created by the Shock Spring at the rear wheel). Using “Compare LR Files”, up to 4 different wheel force curves can be simultaneously viewed. Spring rate and preload can be changed to show the result different settings will have on wheel force.
See 8.6.2 Rear Wheel Force Comparison
> Convert Wheel to Shock (or Shock to Wheel) Leverage ratio files can be used to convert ShockClock recordings. For instance, a ShockClock recording taken from the rear of a bike can be converted into “as if recorded from the Shock”. For tuners who want to know shock velocities, but are unable to mount a transducer directly to the shock.
See 8.7 Convert a ShockClock Recording
Have Fun, Paul Thede President, Race Tech
P.S. If you want to understand this better we have Suspension Seminars 951.279.6655. |
