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Mazda RX7 Wankel Rotary Engine 13B-REW - Working Model - image

Files (28)

Front_Fixed_Gear_-_Scaled.stl
STL
320.1 KB
Snail_housing_clamp_-_Scaled.stl
STL
47.0 KB
Eccentric_Shaft_center_-_Scaled.stl
STL
58.6 KB
Coil_backing_plate_-_Scaled.stl
STL
77.0 KB
Idle_Gear_13b_-_Scaled.stl
STL
61.8 KB
Eccentric_Shaft_Lobe_1_-_Scaled.stl
STL
42.3 KB
Throttle_Body_-_Scaled.stl
STL
487.7 KB
LED_Diffuse_lens_-_Scaled.stl
STL
75.8 KB
Output_Shaft_-_Scaled.stl
STL
29.8 KB
Flywheel_-_13B_-_Scaled.stl
STL
1.0 MB
Visual_Coolant_4_-_Scaled.stl
STL
251.1 KB
Rear_Fixed_Gear_-_Scaled.stl
STL
317.1 KB
Rear_Plate_for_smart_rotor_-_Scaled.stl
STL
2.0 MB
Rear_Rotor_Housing_-_Scaled.stl
STL
2.1 MB
Lower_Intake_Manifold_-_Scaled.stl
STL
2.8 MB
Visual_Coolant_-_Scaled.stl
STL
251.1 KB
Front_Pulley_-_Scaled.stl
STL
2.4 MB
Smart_rotor_top_-_Scaled.stl
STL
231.1 KB
Visual_Coolant_2_-_Scaled.stl
STL
172.2 KB
Turbine_Wheel_-_Scaled.stl
STL
578.6 KB
Rear_Plate_-_Plain_Rotor_-_Scaled.stl
STL
1.8 MB
Eccentric_Shaft_1_-_Scaled.stl
STL
107.9 KB
rotor_1_-_Scaled.stl
STL
800.3 KB
Front_Plate_-_Scaled.stl
STL
3.1 MB
Visual_Coolant_3_-_Scaled.stl
STL
172.2 KB
Smart_rotor_bottom_-_Scaled.stl
STL
803.3 KB
Oil_Filler_-_Scaled.stl
STL
73.1 KB
RX_coil_assembly_jig_-_Scaled.stl
STL
149.1 KB
Print guidance estimate
Uses saved filament metadata
Print cost & setup estimate
Setup guidance plus saved or slicer-confirmed filament, cost, and time. Model file size is never treated as printable volume.
28 model files
Recommended kit
50g

Based on 25% main infill across listed model files

Material cost
$1.20

Filament only at roughly $24/kg PETG / ASA

Print time
2.0h saved / 1.4h–2.4h estimate

Uses 70 mm/s, 0.2 mm layers; verify supports in slicer

STL fileRoleSource sizePETG / ASA 20%PETG / ASA 25%100% solidRecommendation
Front_Fixed_Gear_-_Scaled.stlPrintable file320.1 KB STLSlice fileSlice fileSlice fileEnsure all parts are properly aligned and supported during printing
Snail_housing_clamp_-_Scaled.stlPrintable file47.0 KB STLSlice fileSlice fileSlice fileEnsure all parts are properly aligned and supported during printing
Eccentric_Shaft_center_-_Scaled.stlPrintable file58.6 KB STLSlice fileSlice fileSlice fileEnsure all parts are properly aligned and supported during printing
Coil_backing_plate_-_Scaled.stlPrintable file77.0 KB STLSlice fileSlice fileSlice fileEnsure all parts are properly aligned and supported during printing
Idle_Gear_13b_-_Scaled.stlPrintable file61.8 KB STLSlice fileSlice fileSlice fileEnsure all parts are properly aligned and supported during printing
Eccentric_Shaft_Lobe_1_-_Scaled.stlPrintable file42.3 KB STLSlice fileSlice fileSlice fileEnsure all parts are properly aligned and supported during printing
Throttle_Body_-_Scaled.stlPrintable file487.7 KB STLSlice fileSlice fileSlice fileEnsure all parts are properly aligned and supported during printing
LED_Diffuse_lens_-_Scaled.stlPrintable file75.8 KB STLSlice fileSlice fileSlice fileEnsure all parts are properly aligned and supported during printing
Output_Shaft_-_Scaled.stlPrintable file29.8 KB STLSlice fileSlice fileSlice fileEnsure all parts are properly aligned and supported during printing
Flywheel_-_13B_-_Scaled.stlPrintable file1.0 MB STLSlice fileSlice fileSlice fileEnsure all parts are properly aligned and supported during printing
Visual_Coolant_4_-_Scaled.stlPrintable file251.1 KB STLSlice fileSlice fileSlice fileEnsure all parts are properly aligned and supported during printing
Rear_Fixed_Gear_-_Scaled.stlPrintable file317.1 KB STLSlice fileSlice fileSlice fileEnsure all parts are properly aligned and supported during printing
Rear_Plate_for_smart_rotor_-_Scaled.stlPrintable file2.0 MB STLSlice fileSlice fileSlice fileEnsure all parts are properly aligned and supported during printing
Rear_Rotor_Housing_-_Scaled.stlPrintable file2.1 MB STLSlice fileSlice fileSlice fileEnsure all parts are properly aligned and supported during printing
Lower_Intake_Manifold_-_Scaled.stlPrintable file2.8 MB STLSlice fileSlice fileSlice fileEnsure all parts are properly aligned and supported during printing
Visual_Coolant_-_Scaled.stlPrintable file251.1 KB STLSlice fileSlice fileSlice fileEnsure all parts are properly aligned and supported during printing
Front_Pulley_-_Scaled.stlPrintable file2.4 MB STLSlice fileSlice fileSlice fileEnsure all parts are properly aligned and supported during printing
Smart_rotor_top_-_Scaled.stlPrintable file231.1 KB STLSlice fileSlice fileSlice fileEnsure all parts are properly aligned and supported during printing
Visual_Coolant_2_-_Scaled.stlPrintable file172.2 KB STLSlice fileSlice fileSlice fileEnsure all parts are properly aligned and supported during printing
Turbine_Wheel_-_Scaled.stlPrintable file578.6 KB STLSlice fileSlice fileSlice fileEnsure all parts are properly aligned and supported during printing
Rear_Plate_-_Plain_Rotor_-_Scaled.stlPrintable file1.8 MB STLSlice fileSlice fileSlice fileEnsure all parts are properly aligned and supported during printing
Eccentric_Shaft_1_-_Scaled.stlPrintable file107.9 KB STLSlice fileSlice fileSlice fileEnsure all parts are properly aligned and supported during printing
rotor_1_-_Scaled.stlPrintable file800.3 KB STLSlice fileSlice fileSlice fileEnsure all parts are properly aligned and supported during printing
Front_Plate_-_Scaled.stlPrintable file3.1 MB STLSlice fileSlice fileSlice fileEnsure all parts are properly aligned and supported during printing
Visual_Coolant_3_-_Scaled.stlPrintable file172.2 KB STLSlice fileSlice fileSlice fileEnsure all parts are properly aligned and supported during printing
Smart_rotor_bottom_-_Scaled.stlPrintable file803.3 KB STLSlice fileSlice fileSlice fileEnsure all parts are properly aligned and supported during printing
Oil_Filler_-_Scaled.stlPrintable file73.1 KB STLSlice fileSlice fileSlice fileEnsure all parts are properly aligned and supported during printing
RX_coil_assembly_jig_-_Scaled.stlPrintable file149.1 KB STLSlice fileSlice fileSlice fileEnsure all parts are properly aligned and supported during printing

Saved setup guidance is used for material, infill, support, and per-file recommendation text; editable numbers are planning estimates only.

Mechanical/Functional

Mazda RX7 Wankel Rotary Engine 13B-REW - Working Model

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MC

Shared by

Michael Chen
Verified

Description

Working model of a Mazda 13B-REW Wankel rotary engine. Found in the RX7. Modeled from what was available on the internet. Mostly from pictures and diagrams. So most parts look right but are not dimensionally accurate. the scale is the same as my other models at roughly 1/3rd (35%). The engine stand model as well as links to the hardware kit can be found here Complete hardware kits are avaialable through MakerRx. They include all the non printed parts to build this model. Screw, bearings, magnets, all the electronic components for the LEDs, etc. MakerRx Hardware kit Click Here. The model is designed so that you can see the moving parts of the rotary. All three of them. The center iron plate and front rotor housing are on hinges so the block can be opened up like a book. You can see the back rotor spinning and the you can turn the front rotor by hand when open. The eccentric shaft is sectioned into three pieces and held together with magnets and index pins, so that you can open and close the model while its running. The rotors are held to the eccentric shaft with magnets so that they don't fall out while the block is open. And they can be removed easily to see the eccentric shaft and fixed gears.

Print Settings

Time: 2h
Filament: 50g
Supports: Not needed

Compatible Cars

Published Mar 8, 2026Updated Jul 15, 2026

Originally published on thingiverse.com · License: CC BY

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