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Interactive 3D model of 3-Input / 4-Output Bicycle Gearbox

Gears and transmission

3-Input / 4-Output Bicycle Gearbox

3 views
Bounding box
140.0 × 90.0 × 100.0 mm
Engine
Precision B-rep
Parameters
20
Published
October 26, 2026

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The prompt

Design the gearbox created by pinion that uses 3 input gear mesh and 4output gear mesh for bicycle

Parameters

NameValueRange
Housing Length (X)140 mm80 – 240
Housing Width (Y)90 mm50 – 180
Housing Height (Z)45 mm25 – 100
Wall Thickness4 mm2 – 10
Input Bearing Bore10 mm4 – 30
Output Bearing Bore12 mm4 – 30
Gear Module1.75 mm1 – 3
Gear Face Width8 mm4 – 20
Pinion Teeth (12T)12 teeth8 – 24
Input Gear 1 Teeth18 teeth10 – 40
Input Gear 2 Teeth22 teeth10 – 40
Input Gear 3 Teeth26 teeth10 – 40
Output Gear 1 Teeth28 teeth10 – 50
Output Gear 2 Teeth24 teeth10 – 50
Output Gear 3 Teeth20 teeth10 – 50
Output Gear 4 Teeth16 teeth10 – 50
Input Shaft Diameter10 mm4 – 30
Input Shaft Length90 mm40 – 200
Output Shaft Diameter12 mm4 – 30
Output Shaft Length100 mm40 – 200

Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.