The size (mm) of the spare parts in the photos (on request sizes can edit).
This model is designed for 3D printing.
With these details I drive for a year, and forgot about chain slap.
Measure the distance between center of bottom bracket and rear axle. Divide this length by 3.It should be approx 160mm depending on your bike but exactly 1/3 is the best position.
3D printing settings
Plastic - Nylon / PETG.
Rafts - No.
Supports - No.
Resolution - 0.2 - 0.3.