Open Source Mower Calculations: Difference between revisions
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OSHA regulates mower blade tip speed to less than 19000 feet per minute, it looks like most I've seen run 13000-19000 which means we need a gearbox or a pulley system to increase the speed of mower. | OSHA regulates mower blade tip speed to less than 19000 feet per minute, it looks like most I've seen run 13000-19000 which means we need a gearbox or a pulley system to increase the speed of mower. | ||
*Speed - [[PTO Motor]] - 800 RPM - 4' diameter - pi*D*800=3.14*4*800=10k fpm. Low but ok. | *Speed - [[PTO Motor]] - 800 RPM for 4.9 cu in- 4' diameter - pi*D*800=3.14*4*800=10k fpm. Low but ok for v1. | ||
Latest revision as of 20:31, 8 June 2021
OSHA regulates mower blade tip speed to less than 19000 feet per minute, it looks like most I've seen run 13000-19000 which means we need a gearbox or a pulley system to increase the speed of mower.
- Speed - PTO Motor - 800 RPM for 4.9 cu in- 4' diameter - pi*D*800=3.14*4*800=10k fpm. Low but ok for v1.