High-Speed Electric Scooter Frame Design
Budget: ₹37,500 – ₹75,000 INR
Project Description
I am developing a high-performance electric scooter with motorcycle-like dynamics, intended for real-world prototype development (not a concept or cosmetic design project).
This project requires a mechanical/automotive engineer with experience in vehicle chassis or frame design, not just a CAD modeler.
---
## Project Overview
The goal is to design a custom frame capable of handling high speed, strong acceleration, and real-world riding conditions.
Target performance:
- Top speed: 110–120 km/h
- Strong acceleration (wheelie capability required)
- Stable and confidence-inspiring at high speeds
---
## Key Geometry Requirements
- Wheel size: 14 inch (front & rear)
- Wheelbase: 1350–1400 mm
- Ground clearance: 160–180 mm
- Seat height: 780–820 mm
- Steering rake: 25–27°
- Trail: 90–105 mm
---
## Powertrain Layout
- Mid-drive motor (8–12 kW peak)
- Battery: 72V, 80–100Ah (rectangular pack)
Design must include:
- Proper chain/belt alignment
- Strong motor mounting structure
- Battery placement (low and slightly rear-biased)
- Controller placement with cooling consideration
---
## Frame Requirements
- Tubular steel trellis + central spine hybrid
- Designed for:
- High torsional rigidity
- High torque loads
- Real-world manufacturability (welding, jigging, fabrication)
---
## Suspension Setup
- Front: Telescopic forks
- Rear: Mono-shock
- Swingarm length: 480–520 mm
---
## Tire Setup
- Front: 110/80-14
- Rear: 130/70-14
---
## Deliverables
- Side view CAD (with dimensions)
- Top view CAD
- Basic 3D model (SolidWorks preferred)
- Frame structure with tube specifications
- Mounting points for:
- Battery
- Motor
- Suspension
- Basic structural validation (FEA preferred)
---
## Important Notes
- This is a real prototype project, not a concept design
- The design must be practical and manufacturable
- Preference will be given to freelancers with:
- Automotive / EV / chassis experience
- Past work on vehicles (motorcycles, karts, EVs, etc.)
---
## Screening Question (Must Answer)
Please answer the following:
1. Have you designed any vehicle chassis or frame before?
2. How would you approach frame stiffness and weight distribution in this project?
3. Can you share similar work or portfolio?
---
## Budget & Timeline
- Open to proposals (fixed or hourly)
- Timeline: Flexible, but prefer structured milestones
---
## Final Note
I am looking for a serious engineer for long-term collaboration, not just a one-time CAD task.
I am developing a high-performance electric scooter with motorcycle-like dynamics, intended for real-world prototype development (not a concept or cosmetic design project).
This project requires a mechanical/automotive engineer with experience in vehicle chassis or frame design, not just a CAD modeler.
---
## Project Overview
The goal is to design a custom frame capable of handling high speed, strong acceleration, and real-world riding conditions.
Target performance:
- Top speed: 110–120 km/h
- Strong acceleration (wheelie capability required)
- Stable and confidence-inspiring at high speeds
---
## Key Geometry Requirements
- Wheel size: 14 inch (front & rear)
- Wheelbase: 1350–1400 mm
- Ground clearance: 160–180 mm
- Seat height: 780–820 mm
- Steering rake: 25–27°
- Trail: 90–105 mm
---
## Powertrain Layout
- Mid-drive motor (8–12 kW peak)
- Battery: 72V, 80–100Ah (rectangular pack)
Design must include:
- Proper chain/belt alignment
- Strong motor mounting structure
- Battery placement (low and slightly rear-biased)
- Controller placement with cooling consideration
---
## Frame Requirements
- Tubular steel trellis + central spine hybrid
- Designed for:
- High torsional rigidity
- High torque loads
- Real-world manufacturability (welding, jigging, fabrication)
---
## Suspension Setup
- Front: Telescopic forks
- Rear: Mono-shock
- Swingarm length: 480–520 mm
---
## Tire Setup
- Front: 110/80-14
- Rear: 130/70-14
---
## Deliverables
- Side view CAD (with dimensions)
- Top view CAD
- Basic 3D model (SolidWorks preferred)
- Frame structure with tube specifications
- Mounting points for:
- Battery
- Motor
- Suspension
- Basic structural validation (FEA preferred)
---
## Important Notes
- This is a real prototype project, not a concept design
- The design must be practical and manufacturable
- Preference will be given to freelancers with:
- Automotive / EV / chassis experience
- Past work on vehicles (motorcycles, karts, EVs, etc.)
---
## Screening Question (Must Answer)
Please answer the following:
1. Have you designed any vehicle chassis or frame before?
2. How would you approach frame stiffness and weight distribution in this project?
3. Can you share similar work or portfolio?
---
## Budget & Timeline
- Open to proposals (fixed or hourly)
- Timeline: Flexible, but prefer structured milestones
---
## Final Note
I am looking for a serious engineer for long-term collaboration, not just a one-time CAD task.