[WARNING!!! I HAVEN'T TESTED THESE FLOATS IN THE AIR YET! I plan to do this soon. They do float and are waterproof if you follow my advice below.]
Floats/Pontoons for 3DLabPrint's QTrainer airplane. Could also be used for other RC Airplanes as well or even a pontoon boat; the world is your oyster :)
My goal was to make everything so that it could easily be added onto the plane without removing too much, only the wheels themselves need to be removed.
For splicing, you will need to rotate each part accordingly. This is due to how I modeled them and I’m too lazy to change it.
- Front & back floats
- Coat each piece with a few layers of clear coat or paint. I would also recommend taking CA glue and putting it along the keel and seams.
- Front & back mounts for left and right sides (you could mirror the mesh's as well if desired)
- Mounts have five holes to move the floats back and forth for proper CG placement.
- If you follow what I have shown in the pictures, the middle of the floats will be just behind the CG of the plane which is optimal.
Supports - print two - one for front and one for back
- Use one of the free holes in the mounts
Rudders - This is where you can customize it quite a bit. You could use a one rudder setup that is controlled by the tail wheel adapter linkage or by a separate control line. The rudder mount has a hole in it so you can use a Sullivan push rod (SUL507) or you could use your own push rod setup. The rudder itself has different configurations for push/pull, etc. The rudder linkage arm is meant to link the two rudders together.
- Tail Wheel adapter - This is meant to slide up into tail landing gear and then provide a linkage arm to control the float rudders.
If you are familiar with 3DLabPrints' method of printing, then printing the floats themselves will feel familiar. I highly recommend you use Simplify3D slicing software as you will want to utilize different layers. Thin wall printing is somewhat of an art. The other pieces can be printed as normal, typically with 10-20% infill with 3 top and bottom layers and 3-4 perimeters.
I use a CR-10 so the parts are sized accordingly. If I have time in the future, I will split them apart for smaller print volumes.
Components you will need for attaching to QTrainer:
- 2x printed landing gear from QTrainer (use both spots on the bottom of the plane)
- 4x 40mm M3 screws
- 4x 45mm M3 screws (could use 40mm but 45mm is better)
- 1x 20mm M3 screw (if using the tail wheel adapter)
- push rods
- CA Glue
I tried to make the floats as modular as possible so they could be used with other planes or for other purposes. I was not overly concerned about weight so the non-float parts could be optimized for weight.
Based on Simplify3D, the floats could be scaled down to 70% but I have not actually printed this.
- Create a more aerodynamic front end of the floats
- Add water deflectors so water splashing stays away from prop
- Split models apart for smaller printers
- reduce weight