3.5Hp Leaf Vacuum
Updates: The leaf vacuum was recently featured on woodgears.ca. You can find more pictures and details at http://woodgears.ca/misc/leaf_vacuum.html
A leaf vacuum was designed and built as a tribute to the endless pursuit of conserving one’s energy. Based on a material handling fan, the unit was designed as an attachment to a riding lawn mower. Utilizing a second hand Briggs and Stratton 3.5hp vertical push mower as a power source allowed for a low total project cost of under $40.
The impeller was designed in CAD with specific attention to the centrifugally induced stress on the assembly. The impeller base was CNC cut from 1/4″ 6061-T6 aluminum and the blades were CNC cut from 1/2″ nylon. The blower housing was constructed from plywood and aluminum fascia.
1) Impeller CAD model 2) Inside Housing 3) Impeller Blade 4) Video by Matthias Wandel