Jan. 12 2024 : modified cam plate, top plate and cam inserts for DJI O4Pro compatibility
Jun. 24 2023 : added a gopro 9/10/11 27 and 30deg fixed mount (more to come). The case itself comes from IronLionX on Thingiverse that is kind enough to share the fusion file for his mount, check it here https://www.thingiverse.com/thing:4605069
Jun. 19 2023 : added 6in WideX arm
Mar. 02 2023 : restored 5.25" props compatibility by removing a bit of the front corners of the top plate (v1-1). Dumb designer error.
Feb. 27 2023 : added a DJI O3 antenna mount.
Feb. 10 2023 : added some better cam plates inserts and front standoff adapter
Feb. 4 2023 : released some revised body plates (Sparrow edition). Those are a design improvement in order to have an universal camera plate that works with O3/Vista/Walksnail/Etc and also a shorter back. To upgrade a first generation max2 you need to replace the front/back/cam/top plates with the sparrow ones. Arms are the same. The camera plates take a TPU insert to hold the fpv cam and also a tiny tpu adapter for the front standoff to compensate for the 23mm distance between cam plates (was 20mm before). You also need to reprint the HD cam mounts.
Dec. 19 2022 : remade the dual Walksnail stubby to be shorter and have antennas at 90°
Dec. 18 2022 : added a redesigned 28deg Session5 mount. This one loads the cam from the side and allows the use of TBS ND filters. It have no tpu in view even on superwide setting.
Dec. 13 2022 : I made a slight modification on the slots for cam plates because Cncmadness cutting precision is so good that the current assembly can have play. So i put some classic dogbones to avoid that. Most of the frames cut elsewhere won't have issues though (never had personally so far but i prefer to avoid you having issues).
Nov. 22 2022 :
Added a gopro session5 28deg angle mount.
Added a DJI O3 air unit cam plate option. Those work only for the V3 as it's shorter than other cams.
Nov. 21 2022 : added some more accessories.
Project Introduction
This is a redesign of the Wu Tank Max frame with the following improvements :
Added support for Walksnail Avatar VTX at the rear.
Lighter than V1 (by a good 20g).
Changed central standoffs layouts to give more room at the center of the frame.
Added toilet tank battery mount cutouts.
Note that only the camera plates are the same as in the V1, all the other frame parts are different. All the accessories from the V1 will work on that one too except for the gopro camera mount (a new one is provided here.
here’s just a quick maiden
Kudos
GoaFPV for the original design demand, Ralf Maigler (RookieFPV) for lots of inputs, great accessories, Mauri Mata FPV who is super willing to test the frame and requested the toilet-tank battery mount.
Frame Specs
5" arms : WideX Layout (arms are at 33° angle). Supports up to 5.2" props
6" arms : WideX (33°) and DeadCat Layout (front arms at 15°, rear at 45°).
16x16mm M3 motor mounts (from 22xx to 25xx at least)
Central mount supporting 20x20 (M3), 25.5x25.5 (M2) and 30.5x30.5 (M3) patterns for electronics
Rear mount supporting 20x20 and 25.5x25.5 electronics (Basically DJI O4Pro, O3, VISTA and Caddx Avatar/Walksnail VTX or anything you can come with in that sizes like the HDZero freestyle vtx for example)
6mm thick arms
Reinforced front (2.5mm front and cam plates, 23mm between plates since Sparrow edition)
No electronics / arms interference, the electronics mounts doesn't share screws with the arm mounts.
DJI O4Pro and O3 Air unit compatibility through TPU cam adapters (universal system since the Sparrow edition)
Mounting hardware
Here's the list of mounting hardware needed to assemble the frame :
5 x M3 pressnuts (4 on the rear plate for arms assembly + 1 under the top plate for the gopro mount)
4 x M2 BetaFPV Clamping nuts (on the rear 20x20 or 25.5x25.5 mounts to easily install the Vista/O3/Walksnail VTX)
4 x M3 12mm steel screws (inner arms attach)
4 x M3 16mm steel screws (outer arm attach + standoffs)
11 x M3 6mm steel screws (for the 20mm standoffs, rear and front + 1 for the rear of the gopro mount)
4x M3 8mm steel screws (gopro mount and front standoffs, should work with 8mm)
7 x 20mm M3 standoffs (6 at the rear, 1 in the front on the cam plates)
2 x 28mm M3 standoffs (at the front)
16 x M3 8mm steel screws (for the motors)
Note that if you go with a frame from CNCMadness/CNCDrones the mounting hardware is (can be) provided.
you need to send the provided DXF files with the following instructions :
4 x arms : 6mm carbon fiber (4 x the same for 5" or 6" WideX, for 6" DeadCat you need 2 front and 2 back arms, they're different)
1 x front plate : 2.5mm carbon fiber
2 x cam plates : 2.5mm carbon fiber
1 x rear plate : 2mm carbon fiber
1 x top plate : 2mm carbon fiber
You can optionally ask for countersunk holes on the rear of the top plate and have your screws sitting flush.
Feel free to ask me for directions and help.
Installing the VTX (Vista, Walksnail or whatever 20x20 or 25.5x25.5 VTX)
The rear 20x20 mount is intended to be used with M2 pressnuts that go under the rear plate. So you just have to screw your VTX using M2 screws coming from the top. In the provided files you'll find some VTX washers that are 2.2mm tall and will allow you to give some clearance for air and wires under the VTX.
Since Sparrow version the 25.5x25.5 mount is M2 size (no pressnuts here). The idea is to be able to screw easily a DJI O3 with longer M1.6 10mm screws. Same for walksnail with M2 screws and washers.
I recommend M2 16-18mm screws for a DJI Vista and probably 14-16mm for Walksnail and specific M1.6 10-12mm for DJI O3 (i take a raise of 2mm with washers into account).
The DJI O4 Pro uses normal M2 screws so you just need minimum 6mm ones.
Check the pictures provided, you'll get the idea quite easily.