3.5-Inch FPV Frames
3.5-Inch FPV Frames
18 products
3.5-inch frames are the size where a quad still carries a full HD air unit yet stays small enough to fly in parks and indoors. Most are cinewhoops with ducts or guards around the props for filming close to people; the rest are open-prop freestyle and long-range frames that fly like a smaller 5-inch. This page collects every frame in our Frames range built for 3.5-inch props. Check which video system the kit is cut for, and which stack pattern it takes.
How to choose a 3.5-inch frame
- Ducted or open: a cinewhoop's guards protect props and people and give smooth, slow footage. An open-prop frame is lighter, faster and more efficient.
- Video system: current kits are cut for the DJI O4 Pro or O3 air unit, with separate versions for analog, Walksnail or HDZero cameras. The frame has to match the camera size and air unit mount.
- Stack: many 3.5-inch frames take a 25.5×25.5mm AIO board; others take a 20×20mm stack.
- Motors: cinewhoops commonly run 2004 to 2105.5 stators; light open-prop builds run 1404 to 1804. Check the motor mount pattern on the listing.
- Weight: if staying under 250g matters to you, add up frame, motors, air unit and battery before buying — a ducted frame with an O4 Pro rarely makes it.
What we stock
Cinewhoops: GEPRC GEP-CL35 V3 and GEP-CT35, SpeedyBee Bee35, Bee35 Pro and Bee35 O4P, AOS Cine35 EVO, iFlight AOS Cine35 V5 and the Axisflying CineON C35 V3. Open-prop: FlyFishRC Volador VX3.5 and VX3, Foxeer Caesar 3.5, AlfaRC Fi-150 EVO, SniperX MX for HDZero, SpeedyBee Master3X, and the HGLRC Rekon35 V2 long-range frame. Spare arms for the Foxeer Caesar are listed here too.
Compatibility
3.5-inch builds fly on 4S or 6S packs of roughly 650–1300mAh depending on motor KV. Props are 3.5-inch (D90 ducted props on cinewhoops, 3520–3630 class on open frames). Frames made for one air unit rarely fit another without different side plates or a TPU mount, so buy the version made for your video system.
Frequently asked questions
- Is a 3.5-inch cinewhoop good for beginners?
- Yes. Prop guards make crashes cheaper and flying near objects less risky, and the size is manageable indoors. It is heavier and less agile than an open-prop quad of the same size.
- Can a 3.5-inch build stay under 250g?
- A light open-prop frame with small motors and a compact battery can. A ducted cinewhoop with a DJI O4 Pro air unit usually lands above 250g once the battery is on.
- Which motors fit a 3.5-inch frame?
- Most cinewhoop frames are made for 2004 to 2105.5 motors, and light freestyle frames for 1404 to 1804. The frame listing gives the mounting pattern; match it before ordering motors.