This is my version of air balloon powered car which I did for my kids. This idea is not mine and simillar models can be found here, but I did not like its design, so I did new one with old formula look. Balloon tube is sloped forward, because if it is not, balloon bends backwards and brakes the car.
Files are sorted by white and black. So print only separated parts. There are two variants or rims with 3 or 4 spokes, so you can choose what you like more.
== So STLs named "complete" are not for printing. That is just overview.==
Printer Brand: RepRap
Printer: Rebel 2
Rafts: Doesn't Matter
Supports: No
Resolution: any
Infill: 20-25%
Notes:
Print was easy on my printer, with 0.2mm layer using PLA. Please use at least 3 perimeters because of top sheet consistency. Infill 20-25% should be enough.
Completing of the model
Rims are fitted by 2mm metric screws, which can be directly screwed into holes in body(without any drilling). Size of holes in rims are usually printed smaller, so use some tool to make it fit if you need. 4 spoke rims are printed with 2mm hole and 3 spoke with 2.75mm
Place for windshield is prepared in formula body and windshield should be secured by some drops of CA glue.
Design was done in Tinkercad