Tuck et al. (1991) studied the performance of toothed disc mowing mechanisms.
Mowing performance was studied over a range of forward speeds from 2 to 12 km h-1
and at tooth tip speeds up to 80 m s-1. He found that sharp-toothed discs required 65%
of the total power of sharp conventional blades and 50% of that with blunt
conventional blades. O'Dogherty et al. (1991) studied the effect of blade parameters
and stem configuration on the dynamics of cutting grass. He found that the bluntest
blade (0.15 mm edge radius) required three times the specific cutting energy and twice
the specific peak force as a sharp blade (0.325 mm edge radius).