The temperature is forecast to rise from about 15 to the low 30's by the afternoon. For the elite waves a mid-range blue wax or a warm wax will give about the same overall performance. For all other waves a warm wax like Swix CH8 or HF8 is forecast to have the best performance overall throughout the race.
The chart below shows the estimated time that would be lost by not using the optimal wax. The best wax is the one with an entry of 0:00:00 in bold font. The same data is also shown in graphical form below the table. Our testing has shown Swix CH8 and HF8 to be statistically indistinguishable
The race starts rather late in the morning when the temperature will already be in the mid to upper 20s rising to around the 32 degree mark later in the afternoon. A warm wax like Swix CH8 will be the best solution.
The chart below shows the estimated time that would be lost by not using the optimal wax. The best wax is the one with an entry of 0:00:00 in bold font. The same data is also shown in graphical form below the table.
2018 Birkie: Saturday February 24th - Kortie forecast below
Updated on Thursday, Feb 22
This wax forecast is based off our wax coefficient of friction vs temperature test data. We look at the National Weather Service forecast for race day and predict what the coefficient of friction will be throughout the day based on the temperature. We then run an exercise physiology model to estimate skiing times to determine what wax will be the overall fastest solution for the day.
The forecast temperature is shown with the black line, read the temperatures on the left hand Y-axis. The coefficient of friction will change during the day based on how the temperature is changing. The colored lines below show the coefficient of friction vs Time of day. Read the coefficient of friciton on the righ and Y-axis. The fastest wax at any particual rime of day will be the one that is the lowest on this chart at that time.
2018 Kortie: Friday February 23rd