The study was conducted at Department of Farm Machinery and Power Engineering, . Pant University of Agriculture and Technology, Pantnagar. Existing cowpea thresher was modified for black gram threshing in particular to hilly regions. After necessary modification performance evaluation of thresher was carried out on black gram for different cylinder speed (20 rpm/ m/s, 370 rpm / m/s and 440 rpm / m/s ) and conclave clearance (12 mm, 15 mm, 18 mm ). The obtained results showed suitability of modified thresher for hilly regions of Uttarakhand for threshing black gram. | Modification and performance evaluation of thresher for black gram
