Frank Costantini
Active Member
I recently swapped the original spring shock from my QX100 for the Kind A5-RR1 air shock, and my initial impression (before playing with air pressures) is that the spring shock was more cushioning on bumps. Obviously, I need to test different air pressures, and it's a dual chamber shock, so there are many possible combinations of positive and negative pressure (I initially used ~100 lbs in main chamber and ~80 in negative chamber).
But I thought it might be fun, rather than doing in an entirely subjective way, to use one of the smartphone apps that use the phone's built-in accelerometers (e.g., iPhone apps Sensor Kinetics Pro, VibSensor, VR Mobile). I would mount the phone near the seat (maybe on the seat post) and ride the bike on a standard bumpy course, with either the spring shock or the air shock with different settings. Of course I could do this subjectively, but I'm interested in doing it in a more objective way.
Any suggestions how to do this, e.g., which specific parameters would best represent what a rider would feel. The apps all output acceleration vs. time in all three axes.
But I thought it might be fun, rather than doing in an entirely subjective way, to use one of the smartphone apps that use the phone's built-in accelerometers (e.g., iPhone apps Sensor Kinetics Pro, VibSensor, VR Mobile). I would mount the phone near the seat (maybe on the seat post) and ride the bike on a standard bumpy course, with either the spring shock or the air shock with different settings. Of course I could do this subjectively, but I'm interested in doing it in a more objective way.
Any suggestions how to do this, e.g., which specific parameters would best represent what a rider would feel. The apps all output acceleration vs. time in all three axes.
