Type: Undercutter– Featherweight
Weight: 15 kg
Year of creation: 2018
“Sambhaji” was the eldest son of Shivaji&the founder of the Maratha Empire. A Tribute to a True Legend Sambhaji Bhosale (14 May 1657 – 11 March 1689). He was the second ruler of the Maratha kingdom. He was successor of the realm after his father’s death, and ruled it for nine years.
The Robot is Inspired from many of the Undercutter Robots in Combat robotics. Sambhaji was created with the objective of facing the ramps of its category 15kg. The robot was designed to be “undercutter”, that is, to have its bar close to the ground.
Its first carcass consisted of just one piece, “unibody”, made of Aluminium 6061 T6, but the material was not resistant enough to support the robot’s weapon, and it warped before its first competition. The robot was redesigned and its housing, still “unibody”, was made UHMW Material.
For locomotion we use “planetary” reduction B-Box 15 with Brushless Drive Setup. Its bar is made in EN 31, and has different Bars as per the Opponent.
|Year of creation||2019|
|Robot Weight category||15kg|
|Robot Dimensions (L*B*H) mm||450mm x 200 mm x 115mm|
|Material used in robot||alluminium 6061 T6, UHMW, EN31,|
|Drive Motors||NTM Propdrive 4238 740kv @24v|
|ESC Used for Drive||100 Amp simonk flashed from Rompot store|
|Drive Gearbox Ratio||20:1 (BBOX 15 Gearbox)|
|Drive motors RPM After Reduction||888 Rpm|
|Wheel Size||5 inch|
|Theoretical Top speed of robot||19.3 MPH|
|Weapon Motor||Turnigy Aerodrive 6364 245kv @24v|
|ESC Used for weapon||Redbrick 200amp|
|Weapon Pulley Ratio||1:1|
|Weapon RPM at max||5880|
|Weapon Material &
|EN24 Tool steel Hardened at 46 HRC|
|Weapon Shaft Diameter||25mm|
|Bearing Used in Weapon||SKF 32005 X /Q|
|Thickness of Top Plate||3mm|
|Thickness of Base Plate||8 mm UHMW|
|Battrey Used & Specs of Battrey||
6s 1300mah 120c (3 pcs parrallel combination for drive and weapon)
|Robot Exact weight with highest weight attachment..||11.8kg|
|Machining cost with Material and without eletronics||38k|
|Top achievements||Participate in Bits pillani Goa 2019|