Overview
DarwinFPV FoldApe4 Analog Frame is a foldable FPV drone frame designed for 4-inch micro long range builds. The foldable structure reduces volume by 70% after folding, allowing storage without removing the propellers. The frame uses a reinforced arm structure and carbon fiber propeller clamp design to address vibration and arm rigidity concerns in folding frames.
Key Features
- Pre-assembled frame (factory assembled) to reduce build time.
- Foldable design: volume reduced by 70% after folding; no need to remove propellers for storage.
- Unfolded arms are secured with two screws to help prevent arms folding back during high-intensity moves or after a crash.
- High-precision bushing + carbon fiber propeller clamp; propeller bushing accuracy: ±0.05mm (replacing the original plastic propeller clip design).
- Re-optimized DC (DeadCat) structure intended to improve front/rear moment symmetry and flight feel.
- Surface chamfering and oil spraying process.
For build assistance or parts selection questions, contact https://rcdrone.top/ or support@rcdrone.top.
Specifications
| Model | FoldApe4 Frame |
| Size | 154x117x29mm |
| Wheelbase | 168mm |
| Weight | 51g ± 5g |
| Frame structure | DC (DeadCat) |
| Arm structure | Single quick release arm |
| Camera installation space | 14mm |
| Stack installation space | 19-28mm (factory equipped with aluminum columns of two heights, adjustable) |
| Arm plate thickness | 4mm |
| Top plate thickness | 1.5mm |
| Mid plate thickness | 2mm |
| FC mounting holes | 25.5x25.5mm |
| VTX mounting holes | 15x28mm (M2) three-holes; 25.5x25.5mm (M1.6) |
| Motor mounting holes | 10x10mm (M1.6) three-holes |
| Suitable propeller size | 3.5-4 inch |
| Standard mounting base | Antenna mounting base; Camera mounting base; Naked Gopro mounting base |
| Recommended motor | 1503-2006 |
| Recommended battery | 3-4S 500-1300mAh 100C XT30 |
| Recommended ESC | Above 15A |
| Recommended propeller | GEMFAN F4019-2 |
| Recommended takeoff weight | 200-300g |
| Propeller bushing accuracy | ±0.05mm |
Build Recommendation (Manufacturer Statement)
- Recommended setup: DarwinFPV 1504 long-life motor + 3S 1150mah battery for 20 minutes of empty cruising (Analog version / text also appears as “simulation version”).
- The manufacturer text states a build can be less than 250g take-off weight, depending on the final configuration.
Antenna Mount Base Update (Analog Version)
- GPS is only for reference to identify the version; GPS is not included in the shipment.
- Antenna mount base updated to V2 on 2015.1.4.
- Main difference: GPS installation hole on the V2 printout is smaller (due to a smaller GPS module used on FoldApe4).
Whats Included
- 1 x FoldApe4 frame (assembled before shipment)
- 1 x 15x165mm Kevlar battery strap
- 1 x Accessories pack
- 1 x Spare screws pack
- 1 x Phillips screwdriver
- 1 x Gray velvet bag
- 1 x Manual card
- 1 x Logo sticker (120x120mm)
Applications
- Foldable 4-inch FPV builds for travel and compact carrying.
- Micro long range cruising and general freestyle use where a DC (DeadCat) layout is preferred.
Details

Choose the correct analog version by the antenna mount base; the GPS module shown is for identification only and isn’t included.

Factory-assembled FoldApe4 frame helps shorten build time for 4-inch micro long-range FPV setups.

The folding structure reduces packed volume by about 70% for easier transport without pulling off propellers.

Unfolded arms lock with two screws to help prevent arms folding back during hard moves or after a crash.

A carbon-fiber prop clamp and precision bushing design targets tighter fit and reduced vibration on folding arms.

Motor and battery pairing recommendations can be followed to target longer cruising time, depending on your final build.

At roughly 51g (±5g), the lightweight frame is suited to compact 4-inch builds that prioritize efficiency.

The re-optimized DC (DeadCat) layout is designed to improve front/rear moment symmetry for a more balanced feel.

Chamfered carbon edges and a smooth finish help with handling during assembly and routine maintenance.

Key dimensions, mounting patterns, and recommended components are summarized for quick parts matching.

Everything needed to start a build comes together in the box, including hardware, spare screws, tools, and storage bag.
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