https://github.com/saturn-fpv/mars-90
2 inch unibody truss style fpv drone frame for 25.5mm AIOs
https://github.com/saturn-fpv/mars-90
drone fpv frame quadcopter
Last synced: 3 months ago
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2 inch unibody truss style fpv drone frame for 25.5mm AIOs
- Host: GitHub
- URL: https://github.com/saturn-fpv/mars-90
- Owner: saturn-fpv
- License: cc-by-sa-4.0
- Created: 2025-08-26T00:38:51.000Z (10 months ago)
- Default Branch: main
- Last Pushed: 2025-11-17T23:13:37.000Z (7 months ago)
- Last Synced: 2025-11-17T23:25:15.795Z (7 months ago)
- Topics: drone, fpv, frame, quadcopter
- Homepage:
- Size: 714 KB
- Stars: 0
- Watchers: 0
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# Mars-90 - 2" Unibody FPV Frame
[](http://creativecommons.org/licenses/by-sa/4.0/)
The **Mars-90** is a lightweight and durable **90 mm wheelbase unibody frame** designed for high-performance 2-inch FPV builds. It provides excellent rigidity and smooth flight characteristics.
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## ✨ Features
- **Unibody 2" frame** for maximum rigidity and reduced vibrations
- **Optimized geometry** with truss-style reinforced arms
- **Central mounting platform** for clean AIO or stack installation
- **Octa-shape base** rigid and enough space for 90° USB-C or Micro-USB ports
- **90 mm wheelbase** for agile indoor/outdoor flying
- **Wide motor protection zones** for better crash resistance
- **Compatible with analog and HD systems** (DJI O4, HDZero, Walksnail, analog)
- **Lightweight** for improved efficiency and flight time
- **Step file** for your customization needs
- **Flywoo battery holder** version for ease of use, as well as without
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## 🔧 Build Specifications & Recommendations
### **Frame Thickness**
- **2 mm carbon fiber:** Balanced between strength and weight, ideal for high-KV micro motors.
### **Motor Recommendations**
- **1002, 1003, 1102, 1103, 1202.5 motors**
- Kv range:
- **2S builds:** 9000–14000 Kv
- **3S builds:** 6000–9000 Kv
### **Propeller Size**
- **2" (51 mm) propellers**
Recommended options:
- HQProp HQProp 2X1X3
- Gemfan 2023
### **Screw Sizes**
- **Motor screws:** M1.6 × 4–5 mm (depending on motor base)
- **AIO / stack mounting:**
- 25.5×25.5 AIO → M2 × 10-18mm (depending on stack and canopy)
### **3D Print Recommendations**
Material: **TPU (95A)**
Suggested prints:
- Canopy (any 25.5mm whoop canopy)
- Battery holder (optional)
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## 🏗️ Build Tips
- Tighten the stack screw with a nut under the AIO to reduce noise
- Use **M1.6 washers** under motor screws to protect carbon
- Keep battery centered for better CG
- For DJI O4 builds: tug away the cables neatly
- Keep wiring short for better performance and reliability
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## 🔗 Printables Link
👉 **Printables:** [https://www.printables.com/model/1485191-mars-90-fpv-drone-frame](https://www.printables.com/model/1485191-mars-90-fpv-drone-frame)
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