Custom RV Subframe Design - MAN Truck
Budget: $1,500 – $3,000 AUD
Scope of Work – Design of 3-Point Torsion-Free Subframe for MAN Truck
Project Overview:
We are seeking a skilled mechanical designer or structural engineer with experience in expedition vehicle or motorhome design to develop a 3-point torsion-free mounting system for a custom RV build on a MAN TGM 4x4 chassis.
Objective:
To create a detailed CAD design and technical drawings for a 3-point torsion subframe system that accommodates chassis flex while securely supporting a camper box. The design will be fabricated locally, so clear manufacturing drawings are essential.
Deliverables:
Initial Consultation & Concept Design
Review of chassis specifications (MAN TGM 13.290 4x4)
Advice on mounting points, frame material selection, and isolation components
CAD Design Package
Full 3D CAD model of the subframe system
Designed to bolt or weld onto the MAN chassis without compromising its integrity
Designed to interface with a flat camper box base
Engineering Drawings
Detailed 2D fabrication drawings with dimensions, tolerances, and material specifications
Exploded views and assembly instructions
Mounting point specifications and isolator/hinge details
Optional (if within scope):
Finite Element Analysis (FEA) to assess stress under chassis twist
Advice on mounting the subframe to a StyroMax composite panel floor
Requirements:
Proven experience in off-road vehicle, expedition truck, or motorhome subframe design
Proficiency in SolidWorks, Fusion 360, AutoCAD, or equivalent CAD software
Understanding of chassis flex and isolation principles for heavy-duty trucks
Ability to deliver files compatible with fabrication (STEP, DXF, DWG, PDF)
Timeline:
To be discussed – ideally 2 to 4 weeks for full design package.
Budget:
Please provide a fixed-price quote or hourly rate along with examples of past relevant work.
Project Overview:
We are seeking a skilled mechanical designer or structural engineer with experience in expedition vehicle or motorhome design to develop a 3-point torsion-free mounting system for a custom RV build on a MAN TGM 4x4 chassis.
Objective:
To create a detailed CAD design and technical drawings for a 3-point torsion subframe system that accommodates chassis flex while securely supporting a camper box. The design will be fabricated locally, so clear manufacturing drawings are essential.
Deliverables:
Initial Consultation & Concept Design
Review of chassis specifications (MAN TGM 13.290 4x4)
Advice on mounting points, frame material selection, and isolation components
CAD Design Package
Full 3D CAD model of the subframe system
Designed to bolt or weld onto the MAN chassis without compromising its integrity
Designed to interface with a flat camper box base
Engineering Drawings
Detailed 2D fabrication drawings with dimensions, tolerances, and material specifications
Exploded views and assembly instructions
Mounting point specifications and isolator/hinge details
Optional (if within scope):
Finite Element Analysis (FEA) to assess stress under chassis twist
Advice on mounting the subframe to a StyroMax composite panel floor
Requirements:
Proven experience in off-road vehicle, expedition truck, or motorhome subframe design
Proficiency in SolidWorks, Fusion 360, AutoCAD, or equivalent CAD software
Understanding of chassis flex and isolation principles for heavy-duty trucks
Ability to deliver files compatible with fabrication (STEP, DXF, DWG, PDF)
Timeline:
To be discussed – ideally 2 to 4 weeks for full design package.
Budget:
Please provide a fixed-price quote or hourly rate along with examples of past relevant work.