PushRod Engine with Gearbox

GENERALThe model is designed to be (de)mountable with allen bolts and nuts. As such the finished model is very suitable for educational purposes.EngineA Overhead Valves engine is an internal combustion engine with the valves placed in the cylinder head. In this case the valves are operated by rockers and push rods.This single cylinder engine has two valves, with an engine capacity of 123 cc. GearboxIn a constant mesh gearbox all the gears of the main shaft are in constant mesh with the corresponding gears of the countershaft. A sliding dog clutch is provided on the main shaft.The constant mesh gearbox has forward neutral and reverse gears. Primary DriveFor the primary drive there are 2 options: by chain (80 parts!) or gears.Chain tension and gear adjustment can be obtained by sliding the gearbox on the sledge.Dimensions: 232 x 129 x 255 mm. Weight: 0.9 kg.PRINTINGThe parts should be printed on a smooth build plate.Try to avoid elephant foot.I printed the model with PLA+ filament on a P