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I see that the term “WATTS” was replaced by the term “POWER.” How does power differ from watts?
Power is the correct term for the parameter while watts is the unit of measure of power. The power is still measured in watts; however, we changed the term to power since it is more meaningful to most people.
The amount of calories that the console shows for my ride are lower than the amount of calories that my heart rate monitor says I burned. How are calories calculated on the Echelon2 and why are they lower than what my heart rate monitor says?
Calories on the Echelon2 are calculated directly from the power, and are a true measure of the amount of energy expended by turning the pedals. The Echelon2 calories do not take into account any biological factors such as age, weight, and gender. The Echelon2 calories also do not take into account calories burned due to a person’s normal metabolic rate. Heart rate monitors use heart rate, age, gender, and weight to estimate how many calories a person burns. The heart rate monitor not only accounts for work done on the bike, but also resting metabolic rate while doing the work. So the heart rate monitor calories will likely always be higher than the calories calculated by the Echelon2. The amount of difference between the two will depend on physical fitness level and biological factors of individual riders.
How does the Echelon2 measure power and how does that method of measurement differ from how other group cycling bikes measure power?
The Echelon2 uses a simple and robust position sensor to measure the angle of the resistance mechanism. The console then uses an algorithm to calculate the power based on the angle of the resistance mechanism. The algorithm was developed using a laboratory dynamometer to validate the accuracy of the power algorithm, achieving a level of accuracy that is comparable to other group cycling power meters.
Some other brands of group cycling bikes use strain gauges to measure torque or load. Strain gauges do not directly measure power either; they measure the strain of a particular component. They then provide electrical signals that must then be run through an algorithm, as is done with the Echelon2, to calculate power. All power meters, regardless of how they provide data, must be validated for accuracy. The Echelon2 power upgrade kit is the only power measurement device that can be bolted on by the user and does not require factory installation. In addition the sensor used in the Echelon2 is far less costly than strain gauge sensors, yet provides comparable accuracy.
The Echelon2 console seems to report higher or lower power (watts) than the Echelon. Is the Echelon2 less accurate than the Echelon?
The Echelon2 has been designed, tested, and validated to be more accurate than the Echelon. In some cases, the Echelon2 may report lower power (watts) than the Echelon due to improved accuracy. If riders are used to higher numbers and want to see higher numbers, then the PWR ADJUST feature in the service menu can be used to adjust the power display to be higher (or lower if desired). The PWR ADJUST feature allows you to adjust the power up or down between -99% and +99% to change the level of power that is displayed for a given level of resistance.. Refer to the Installation Guide included on the CD that came with your console kit on how to adjust power level.
How is the new Schwinn Echelon2 console and power upgrade different from the Echelon?
The new Echelon2 is an evolution of the Echelon. We’ve kept the basic look of the console the same but changed the outer case to black to distinguish it from the Echelon. Below is a list of new or changed features:
• The power sensor has been replaced with a new sensor that is more stable and more accurate than the previous power sensor, and consumes less energy. The new power sensor uses an all new algorithm that provides more accurate and consistent power readings
• The new power sensor has been simplified by removing the power sensor firmware. Now only the console contains the firmware that drives the whole system, and firmware updates for the entire system can easily be done through the USB drive
• There is now a dedicated ON/OFF button at the top
• The END button has been replaced by the AVG/MAX button
• The term WATTS has been changed to POWER, though the units of power are still measured in watts
• The speed display has been removed, and the heart rate, calories, and optional gear display have been moved up to the third line
• There are now AVG and MAX power displays in the STAGE and TOTAL ride timers so that riders can see their total ride average power at all times, and they can now see their stage average power
• The function of the STAGE button has changed so that one press starts a stage, a second press ends the stage and freezes the data, and a third press clears the stage and begins a new stage
• When a rider stops pedaling and the console enters Pause mode, the timers now will continue running for as long as the console is in Pause mode; however, the console will not continue counting average power until the rider begins pedaling again
• The console connector has been redesigned and now has a protective cap that prevents the connector from accidentally being unplugged
• The data file that can be uploaded to a USB drive displays summary data for the entire ride and for each stage, as well as total ride data
• Improved battery life