RC Drag Bike

This is a RC Drag Bike I designed and built.. Attached are the 3D print files. It was designed to take a 540 size motor running off of a super shorty battery 7.4v.. The aluminium spacers and front forks were made on a lathe.
A O ring (P53 5.7mm by 52.6mm id or P55 5.7mm by 54.6mm id) was used on the front wheel as a tire..
A 9 gram servo was used for steering..
I also bought a 12T and a 50T cogged pulley running a 176-2GT-6 belt..
The main axle was made out of 90mm long 5mm round bar...
The rear wheel was a 1/10th world GT tire.
Bearings were as follows.. Rear axle 5mm id 4mm wide 13mm od flanged 2of .. Wheelie bar wheels 10mm od, 5mm id, 4mm wide 2of.. other bearings were 3mm id, 4mm wide, 8mm od flanged 6of...
Chassis spacers are as follows.. 2of 60mm by 6mm, 1 of 60mm by 6mm ends turned down to 5mm for wheelie bar wheels.. 1of 54mm by 6mm...
Front forks 85mm long, 51mm bottom by 8mm.. top half 6mm... Spacer 19.2mm long 6mm bore.. Handle bar on