RC Drag Bike

thingiverse

I designed and built an RC Drag Bike using 3D print files. The bike was engineered to accommodate a 540 size motor running off of a super shorty battery, 7.4 volts. Aluminum spacers and front forks were crafted on a lathe. A specific O-ring (P53, 5.7mm x 52.6mm or P55, 5.7mm x 54.6mm) was utilized as the tire on the front wheel. A 9-gram servo was used for steering purposes. I also acquired a 12T and a 50T cogged pulley, which I paired with a 176-2GT-6 belt. The main axle was constructed from a 90mm long, 5mm round bar. The rear wheel features a 1/10th world GT tire. Bearings were selected as follows: Rear axle (5mm id, 4mm wide, 13mm od, flanged); wheelie bar wheels (10mm od, 5mm id, 4mm wide); and other bearings (3mm id, 4mm wide, 8mm od, flanged). Chassis spacers were made as follows: two of 60mm x 6mm; one of 60mm x 6mm with ends turned down to 5mm for wheelie bar wheels; and one of 54mm x 6mm. Front forks measure 85mm long, with a bottom diameter of 51mm and a thickness of 8mm. The top half is 6mm thick. A spacer measuring 19.2mm in length has a 6mm bore. The handlebar on top is 55mm long. Various self-tapping screws (3mm), machine screws (3mm), grub screws (3mm), and axle (3mm) for the front wheel were used. Additionally, a ball stud and cup/connector rod were used for steering.