I broke the wingtips on my S800, so I designed this. The shape is inspired by the TBS Caipirinha V2, not in the exact same dimension just similar shape.
Looking for more S800 mods?
I have a post documenting the mods and build tips I've done to my S800:
How to Use?
These wingtips are designed to be removable, and can be used together with this detachable wingtip mount: https://www.thingiverse.com/thing:2506307
Basically, you go to the above link, print out "part 1", insert some M3 nuts, glue it to your wing, and you would be able to attach my wingtips to the wing using some M3 10mm screws. And put a washer in, it helps durability.
Of course, you can also simply glue these wingtips on the wing... It's entirely up to you :)
Note that these winglets are a tiny bit heavier than the original foam winglets, so you might want to adjust CG accordingly.
There is a normal version, and a lite version.
The lite version is about 30% to 40% lighter, and slightly smaller. You need to wrap it with a few layers of packing tape.before installing it on your wing.
The normal version is ready to use after it's printed.
How to Print?
I use ABS and seems to be pretty durable. 6%-15% infill depends on your preference of strength vs. weight. And I prefer Tri-Hexagon or Honey Comb pattern.
Layer height: 0.2mm
Wall line count: 3
Top layers: 4
Bottom layers: 3
I printed mine with 6% infill, wasn't able to break these in minor crashes, so I don't think landing shouldn't be much of a problem at all. The only time I managed to break them was in a massive full throttle nose down dive, where I also broke the nose of the wing off... LOL can't imaging anything would survive that crash.