UoN Robot Wars Project Part numbering scheme for Little John (dual-spinner heavyweight) Purpose-manufactured parts: Description: Qty: Part number: Top Plate 1 P102_3 Bottom Plate 1 P101 Long Wall 2 P401 Short Wall 2 P402 Spinner Pulley 2 P202_2 Weapon Fixing Plate 4 P206 Weapon Shaft 2 P203_1 Wheel Support (outer) 2 ? Blade 2 P201_2 Off-the-shelf parts: Description: Qty: Reference: Drive motor 2 ? Weapon motor 2 Prodrive V2 50-60 Battery 4 LiPo 5Ah 4S 60C Speed controller 1 ?