A great frame for a beginner or those who just want room to build. This frame features 25mm stand-offs as well as multiple mount locations – even on the top plate, making for a hastle free build. I’ve built 4 of these – still one of my favourite 3.5 inch frames.
A great frame for a non DJI 03 / 04 build.
Features
- Multiple Mounting Locations (including top plate)
- 25mm Standoffs (good frame internal clearance)
- 19mm Camera Mounting
- Easy to mount capacitor and spike absorber in rear
- Can fit AIO with 20 x 20 mount pattern
- TPU antenna mount for single or dual antennas
- Additional arm braces included (great durability)
This AIO FC with 20×20 mount pattern is a good choice if you want to mount the FC and VTX all in one stack instead of mounting the VTX on the top plate. It has a 10V 2 Amp BEC so you can power the VTX from the FC instead of from Vbatt.
This 25.5×25.5mm mount FC can be mounted square on. You will need to change board orientation in Betaflight and route motor wires to the motor pads. VTX must be powered from Vbatt. Choose this FC if your VTX has a 25.5 x 25.5mm mount pattern and mount it on top.
Note: 4S only! don’t forget.
A 1604 size motor between 3800 to 4000Kv is perfect on 4S for agressive freestyle. 1504 and 1804 motors around the same KV will also work well.
A lower pitch prop around 20 to 25 is best for this weight class and lower pitch will reduce propwash by keeping the tip speed higher.
If using an AIO FC with 20×20 mounting, mount this VTX in the stack. If using the FC with 25.5×25.5 mounting, mount this VTX on the top plate.
Note: Mount holes are M3. You will need these mount adapters.
RHCP is most common for analog but check your goggles antennas to make sure
For a 19mm camera, the Runcam Phoenix is the best on the market for image quality.
DJI / Caddx VTX Options
20 x 20mm Mount
2S – 6S
Walksnail Avatar VTX Options
20 x 20mm Mount
25.5 x 25.5mm Mount
2S – 6S / 19mm Cam
* Need to mount on top plate and drill out holed to M3.
20 x 20mm Mount
25.5 x 25.5mm Mount
2S – 6S / 19mm Cam
20 x 20mm Mount
25.5 x 25.5mm Mount
2S – 6S / 19mm Cam
HD Zero VTX Options
25.5 x 25.5mm Mount
2S – 6S
20 x 20mm M3 Mount
2S – 4S
Will need mount adapters
20 x 20mm Mount
2S – 6S
A tight fit in the stack after leaving enough space for the battery strap, but can work.
19mm Mount
This frame kit comes with a 16 x 200mm battery strap. It’s fine for the job, but I prefer a 20mm battery strap for this size battey. The size you need is 20mm x 200mm for a 4S battery.
I have always flown 3.5 inch freestyle with a ceramic SMD antenna and had no problems. They are easy to mount in this frame in the back or behind the camera. If you prefer a T antenna the options below are good budget receivers.
Some Building Inspiration
A few example builds showing some creative fitout solutions for this frame. A bit more advanced, especially with the AIO build where I use shared stack locations. The dual stack build requires a special small stack to clear the stand-off.
