21 aug 2021
- although the PE material might be durable, it curled like crazy and makes the blades quite useless. I'll need to figure out a different solution.
- the standby power consumption of the hoverboard drains the battery way too quickly at this moment, it will need to be investigated how to enable sleep modes on this board.
The entire internet is full of PVC based DIY wind blades. While these probably work for a while, they never show the long term effects / failures of these blades.
It is explained in this paper: Low wind speed wind turbine in DIY version, (Alex van den Bossche, EELAB Electrical Energy Lab, Ghent University
https://www.researchgate.net/publication/261147194_Low_wind_speed_wind_turbine_in_DIY_version ), why not to use PVC. A suggestion for a more durable but still commonly available material is made, I gladly followed this suggestion.
The wind blades I've made in this project, are created from polyethylene (PE), which is UV resistant and has a good failure behaviour. It is just another type of watertube, still relatively easy to find in plumbing shops.
As a first attempt I will just create a two bladed unoptimized version for initial trials to help debugging the rest of my turbine hardware and software, I'll upgrade to a higher blade number and optimized shape later on.