Following on from previous tests viewtopic.php?f=196&t=2414683 , it was decided to perform some further testing using an ‘eccentric column loading’ test method, as suggested by Kyle @ Project Cedrus (https://projectcedrus.com/)
This should provide results that are more representative of real use loading than those previously performed.
Masts tested:
Gong Aluminium V2 85cm
Gong Aluminium V2 70cm (this was cut down from 75cm)
Gong Carbon V2 85cm
Project Cedrus 90cm
The following chart summarizes the results.
The value ML/2𝜽 represents the bending stiffness and effectively provides a stiffness value per unit length. Ie 2 masts of different lengths but the same construction should show similar value, even though the measured deflections are different. However, some variation is to be expected due to end effects.
The following chart compares the weights of the different masts tested.
Note.
The Gong Aluminium masts were weighed complete with added Plate adapter and Fuselage adapters.
For the Gong Carbon mast the Plate adapter and Fuselage adapter are built in.
The weights for the Project Cedrus mast include the added weights of 2 different types of plate adapters (obtained from the Project Cedrus website). It could be argued that a fuselage adapter should also be added but the need for this is fuselage dependent.
The Project Cedrus mast is not only the lightest despite being the longest but is also the most stiff.
Details of Testing and Analysis are detailed in https://docs.google.com/document/d/10WB ... p=sharing/