Model Dirt Bike Engine

This is a model of a 2 stroke dirt bike engine.
There is other hardware that is needed ( 5 mm Bearings x2, Belt, 20 teeth gears, All linked below)

https://www.amazon.com/uxcell-Groove-Bearing-Double-Bearings/dp/B07FDTC4BX/ref=sr_1_8?crid=8XUU659F0VL0&keywords=5mm+ball+bearings&qid=1643395271&sprefix=5mm+ball+bearings%2Caps%2C158&sr=8-8

https://www.amazon.com/Zeelo-Timing-Tensioner-Torsion-Printer/dp/B08SMFM3Z6/ref=sr_1_3?crid=N2DNUOL3Y9IO&keywords=3d+printer+gears+and+pulleys&qid=1642703458&sprefix=3d+printer+gears+and+pulleys%2Caps%2C129&sr=8-3