Home / Series / Primitive Technology / Aired Order / Season 2022 / Episode 4

Improved Multi-Blade Blower

In the 6 years since I developed the first forge blower (https://youtu.be/VVV4xeWBIxE) I had made very few improvements to it's design. So I decided to do some research and development to see if I could improve it's efficiency. From my research, increasing the number of fan blades from 4 to 8 yielded an increase of 19% volume of airflow. So I set about building a better fan. Instead of splitting the rotor and inserting blades made of bark into it, I made spokes from split cane to hold the blades leaving the rotor intact. This increased the longevity of the rotor as well as the spokes being heavier contributing more momentum, assisting the impeller in winding back in the other direction after each rotation. Instead of bark being used to for the blades, simple (and easier to find) folded leaves formed the blades. These, being flexible, are less likely to break against the walls of the housing as stiff bark does. Finally, a lid was added to the housing to make maintenance easier. The new

English
  • Originally Aired June 2, 2022
  • Runtime 8 minutes
  • Network YouTube
  • Created June 3, 2022 by
    Ago1896
  • Modified June 3, 2022 by
    Ago1896