Based on Franckite (the Sword father) method on the kitefoil Forum:Comparative measurements for mast flex and torsional stiffness
Purpose of the method: investigate what makes a fast ? comfortable ? kitefoil .... using a method as reproductible and scientific as possible ... though cheap.
A very straight forward protocol:
1- a cantilever beam test with 5kg applied at a 85 cm distance from the "wall"
2- torsional stiffness test : 5kg applied at a 30cm distance from the mast
Measurements taken at 85cm and 30 cm in each case with respect to the initial position without weight
Flex and Torsion Protocol.jpg [ 65.33 KIB | Viewed 1098 times ]
Metric to Imperial conversion: 5 kg = 11 pounds at
1 - 85 cm = 2.79 feet (2 feet 9 15⁄32 inches)
2 - 30 cm = 11.81 in - 0.984 foot (11 13⁄16 inches) - 25cm = 9.84 in
The results will be updated with your values and the Kitefoil Forum ones (Spotz, Ketos, Zeeko, Carafino and MHL measurements are missing).
Results expressed in mm would be an advantage.
Click on the table below to expand ...