How to Build on the FoldApe4 4-Inch Folding Frame
The FoldApe4 at $62.99 is a 4-inch carbon fiber FPV frame with folding arms in the analog version. Folding arms pack the quad small for travel and open for flight. You add motors, a flight controller, an ESC, a camera, and a video transmitter. The frame suits a 4-inch analog freestyle build.
Quick facts
| Fact | Value |
|---|---|
| Size | 4 inch |
| Material | Carbon fiber |
| Version | Analog |
| Arms | Folding |
| Price | $62.99 |
Why fold the arms?
Folding arms pack the quad small for travel and open for flight.
A folded quad fits a small bag without removing props or parts.
Lock each arm open before flight and check it by hand.
What is the analog version?
The analog version takes an analog camera and video transmitter.
The listing names the FoldApe4 as the analog version frame, so plan analog video gear for it.
Analog video gear costs less than digital gear and suits a first 4-inch build.
What parts fit a 4-inch frame?
A 4-inch frame takes 4-inch props and motors sized for that prop size.
Add a flight controller, an ESC, a camera, and a video transmitter to the frame.
Check the frame mount size before you order a stack, so the board holes line up.
What did we check on the bench?
We checked the listing states a 4-inch carbon fiber frame in the analog version.
We counted 8 images on the listing, and the hero image shows the analog version frame.
We matched the frame size to the listing name, not to a seller claim.
How the options compare
| Frame | Size | Type | Version | Price |
|---|---|---|---|---|
| FoldApe4 | 4 inch | Folding frame | Analog | $62.99 |
| BabyApe II | 3.5 inch | Frame kit | Frame only | $57.99 |
| MOZ7 | 7 inch | Frame kit | O3 and O4 Pro | $219.99 |
How do you check a folding frame before flight?
- Unfold each arm and lock it open.
- Check each hinge by hand for play.
- Check each prop spins free.
- Check the stack screws are tight.
- Run a short hover test before normal flight.
Parts that fit this guide
In-stock parts ship from the New York, USA warehouse in 1-2 business days. Prices below are the live store prices we verified on November 10, 2026.
DarwinFPV FoldApe4 4 Inch Carbon Fiber FPV Frame – Analog Version ($62.99)
FoldApe4 at $62.99. It is a 4-inch carbon fiber frame with folding arms in the analog version.
DarwinFPV BabyApe II 3.5 Inch Freestyle FPV Frame Kit – 156mm Carbon Fiber ($57.99)
BabyApe II frame at $57.99. It is a 156 mm carbon fiber frame kit for a 3.5-inch build.
GEPRC MOZ7 7 Inch H-Frame Long Range FPV Frame Kit – O3/O4 Pro Compatible ($219.99)
MOZ7 at $219.99. It is a 7-inch H-frame kit for long range flight with DJI O3 or O4 Pro video.
Shop the full range: FPV Drone Frames at Quality RC Parts. See also: Related guide.
Frequently asked questions
Do the arms fold in flight?
No. Lock each arm open before flight and check it by hand. A loose arm changes how the quad flies.
Does the frame include motors?
No. It is a frame only. Add motors, a flight controller, an ESC, a camera, and a video transmitter.
What video gear fits the analog version?
Analog cameras and video transmitters fit it. Plan analog gear, not digital, for this version.
How do I carry a folded quad?
Fold the arms and pack the quad in a small bag. Check the arms and props before the next flight.
Sources
Last updated: November 10, 2026.