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1. Setup “Preferences” Manual Zero (see Manual Zero) Manual Zero must be used as there is no guarantee the suspension will be topped out during a test run. To use Manual Zero we must input the Offset into Preferences.
> Measure the Offset (this must be done for each wheel) Start recording, lift the bike off the ground so the suspension gets fully extended, put it back down and stop recording (or you could do a Static Sag Measurement). Download the recording. Switch to Manual Zero and hit the “Zero” button. Read the “Offset”.
> Setup a Vehicle Type in Preferences, put the Offset number into “Vehicle Preferences”. Uncheck the “Auto-Zero” check box. Input the Maximum Travel. Set the Download Limit to 5 minutes. 2. Collect Data Use the Pro Kit to collect data from both the front and rear wheel at the same time. Instruct the rider to start the recording (after at least 1 lap to warm up the tires) at a known reference point such as the Finish Line. Record for at least 2 laps. 3. Download the Data The Filename will auto-increment. So when you Download the second file, reset the number back to the previous one. This will make both files of the same run start with the same number. 4. Open the files. What to look for: Front End Look for Bottoming, particularly in turns. We have seen riders bottom near the apex with cornering forces and trail braking. Soft Bottoms are getting close to metal-to-metal but are OK. Hard Bottoms are not OK. Bottoming results in a dangerous, and often abrupt, loss of traction. 5. Balance To see Front to Rear Balance: Select a front and rear file from the same run. - Open the front file in file location 1. - Open the rear file in file location 2.
Select Analysis, File 1/ File 2 (or Ctrl+6) See 6.2.2 - Look for similarity between the front and rear. 100% means the front data is the same as the rear data for that measurement. It should not necessarily be exactly the same. Look for a pattern for good feel.
Select Travel Histogram (Ctrl+7) See 6.2.3 - Note that Standard Deviation is always greater for the Front end. This is because it will normally be quite a bit more active (use more of the travel) than the rear. Look for Average Ride Height relationships. It is up to you to find patterns that work best.
Select Velocity Histograms (Ctrl+8) See 6.2.4 The front and rear histogram should not necessarily be exactly the same. However, we have found that they will be fairly close, particularly for Rebound Damping.
Keep in mind that the Histogram displays the relative amount of time a particular velocity occurs. This means when a plot is higher at low velocities it has more "low velocity occurrences" and less “high velocity occurrences” than the other file. If everything else is equal (same track, rider, etc.) this indicates less low speed damping. Using this, you can see fairly small changes in setup. |
