Bell Crank Rocker Arm

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Bounding box: 230.7 × 55.0 × 167.7 mm
Engine: Precision B-rep
Parameters: 23
Published: November 14, 2026

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The prompt

make the following model based off the referece image here are some needed mesurements Unit system: MMGS Decimal places: 3 Part origin: Arbitrary Material: AISI 1020 (Density = 0.0079g/mm3) A = 35, B = 55, C = 155, D = 161, X = (D+3)/4

Parameters

Name	Value	Range
A - top boss OD	35 mm	10 – 80
B - vertical boss OD	55 mm	15 – 100
C - horizontal boss offset	155 mm	50 – 300
D - exact boss centre distance	161 mm	50 – 300
X - vertical boss offset	41 mm	0 – 150
Web plate thickness	15 mm	4 – 40
Top boss OD	35 mm	10 – 80
Top boss bore	16 mm	4 – 40
Top boss length	45 mm	10 – 80
Vertical boss OD	55 mm	15 – 100
Vertical boss bore	25 mm	5 – 50
Vertical boss length	50 mm	10 – 100
Boss distance X	155 mm	50 – 300
Boss distance Z	41 mm	0 – 150
Vertical boss Z position	0 mm	-50 – 100
Lobe 1 radius	72.5 mm	10 – 200
Lobe 1 X position	-124.5 mm	-300 – 300
Lobe 1 Z position	33 mm	-150 – 150
Lobe 2 radius	72.5 mm	10 – 200
Lobe 2 X position	-38.9 mm	-300 – 300
Lobe 2 Z position	10.3 mm	-150 – 150
Web fillet radius	5 mm	0 – 20
Boss end chamfer	1.6 mm	0 – 10

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.

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