Lemonade - Active Cooling Motor for Lemontron

Lemonade is a modification that improves the cooling of motors. Placing the fans directly beside the motors with heatsinks attached allows fans to pull a double-duty of cooling the motor and internals (SKR Pico, Raspberry Pi, PSU)

I have heard some still have heat issue remains after adopting this mod, so please read before deciding to adopt this. 
This mod has worked well for me so far, and the configuration i went with is 2 of 14x14x14 (or 28x14x14) heatsinks on each motor with 1mm generic thermal pad (advertised at 6w/mk)

Print Setting
- Refer to Lemontron's Print Setting

Additional parts:
- 2x 2510 axial fans
- 8x M3x14 screws for securing fans
- Aluminum Heatsinks. Can use any size up to 26x14mm, 28x14mm (i.e. 2x 14x14mm) will require 2mm spacers.
- 1x C8 AC clip-in panel socket (require modification, refer to picture)

Optional parts for M6 Bowden Collet (as seen in pictures)
- 1x KJH 04-M6 Pneumatic Connector/Bowden Coupler/Bowden Collet

Assembly:
- Assemble the [Unibody Chassis] as usual
- Attach aluminum heatsinks on the side of the motors
      (2025.04.23) Added Spacer for 28x14x14 heatsink with 1mm thermal pad (designed for 0.5mm squeeze for pressure)
- Secure 4x 2510 axial fans with M3x14 screws on the bottom half
      (2025.04.25) Orient the fan such that one is intake and one is outtake (back-to-front or front-to-back) for proper ventilation.
- Install [new midplates] with screws and continue as usual

Optional Assembly for M6 Bowden Collet
- Use a 2.5mm drill bit, insert in the M6 collet, and then [Left Midplate with M6 Collet] 
     (note1: may need to widen midplate with the inserted bit)
     (note2: 2.5mm drill bit is optional, making insertion easier and straight)
- Tighten the collet with a wrench while keeping pressure on the drill bit

Note: This can be used in conjunction with Zest mod by yours truly

Note2: I still have heat issue with 18x9x3 heatsink with included thermal tape, so I changed to 28x14x14 heatsink with thermal pads and held with shim/spacer. The heat issue is largely resolved for me (still hot, but can touch motor for 2min+ without burning, motor shaft is about room temperature). I've heard some still have heat issues adopting this mod, so I'll update if there's improvement or join Voxolite discord for further discussion. 

Some points to note that could be the differences are:


28x14mm (392sqmm) surface area is quite a bit higher than other sizes (e.g. 24x12mm is 288sqmm, which is about 73%)
Thermal pads have higher thermal conductivity (the one I use is 6w/mk). From what I know: Thermal Paste > Thermal pads > Thermal Tape. Some will advertize unrealistically high number so do be careful.
Themal pads have better contact, which transfer heat better. The side of the motors are textured and thermal pads can fill that gap since they're thick and elastic.
The fan I used is GDSTime 2510 DC 24v 0.06a (Sleeve), which runs at around 2.45CFM (12000RPM at 100% speed)
The spacer I modeled for 28x14x14 forces air to go through the heatsinks, which could potentially improve efficiency.