Strong Flying Propeller / Pull Copter
Description
Hi Recently my son came home very sad because a friend had such a fancy flying propeller from the 1€ shop. Of course I had to sit down directly at the computer and after the first prototype was already well working I designed an improved version. This toy should be very stable and last a long time! Also, it's very easy to use and grab for the smaller ones among us! I used the technique already tested in my designs like the math train or the finger skateboard. You can print all parts without support and put the parts together very easy. I recommend to use a small drop of glue to secure the whole assembly in place. This drop should be located between the axis and the gear. It is not necessary but I lubricated all mechanical pieces with some paraffin wax. A drop of Oil will do the job too but may be messy. Put the pulling rod in the place marked by the arrows. Otherwise the propeller wants to fly downwards. Have fun! :) Note: The prop will fly long distances/ very high. So better use it in a place without trees and no obstacles. Hold the Toy away from the face! - otherwise the propeller will fly into it :D "Important" Print instructions/ tipps: Axis: Print the axis with at least 4-5 perimeters! Propeller: Print the propeller with not too brittle material! (I used tough PLA or even better: Nylon + Carbon Filament) - Low infill: The lighter the better ,-) Gear & Bearings: Use filament that can withstand kinda low tolerances. PLA will do the job. If you have a seam cut it off after printing. To avoid a bad surface dont "fill the gaps". Pulling rod: I printed it with some tough PLA. But the less brittle the better I guess ,-) It is possible to separate the file into parts with your slicer ,) I also like to break the corners of all parts by scraping over these areas with a knife. That makes the action smooth and gives a good handfeel :)
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