This model was originally designed by WH and reduces the use of hardware. You hardly need screws, and each screw has been carefully designed to be detachable as a whole. It comes with a socket, wrench tool, and an integrated storage device.

    The feature of this model is the crankshaft design, which is based on the characteristic of a 6-cylinder engine crankshaft angle of 120 º. The split design eliminates the inherent support problem of the crankshaft and increases the surface smoothness. It may require some basic knowledge to assemble the crankshaft position correctly in one attempt, but multiple attempts can be made.

    The model is driven by a Bambu TT motor and requires three 3M14mm screws for fixation (if there are no screws, they can be fixed without any looseness). It can be said that the entire machine is a 3D printed part.

      Secondly, the cylinder has a transparent hole, which may be difficult to remove the support. However, I have set the support parameters and used a screwdriver to remove them (you can set better parameters yourself). The bottom shell also has a transparent hole.Due to the large size of the model, it is divided into two printing configurations and requires an A1 printer platform size.This is the last engine project, thank you.

    Printing suggestions/design

parameters:Material: PETG (I designed the tolerance based on this material, PLA material may have some parts that are too tight, with a shrinkage rate of 0.1mm)

Size: 354x188x148（mm）

thread: M7x1

Cylinder diameter: 48.5mm

Pistonstroke: 28.8mm

Number of flywheel teeth:55/1.5M

Output active teeth: 22

Driventeeth: 44

Ignitionsequence: 1-2-5-6-3-4

Installation diagram

A physical installation diagram will be updated later.