Giant wheel / ferris wheel / grande roue / 1 meter

thingiverse

https://youtu.be/C50RAc9HRt4 **************** Added 2020 04 18 a set of 3 files for wheel spoke inner section which was not printable on a Ender3 due to the size. Now splitted in two parts + junction part to help for alignment and solidity. These 3 files in a zip file : grande roue wheel spoke inner section 2 parts inner.zip **************** This project started when I saw this type of Wheel in Hardelot a few months ago. It made sense to make a big project with a small 3D machine to show it is possible. After a few evenings looking online to find some drawings and pictures of real things, my choice was made for the RR35 from mondial Rides in Netherland. This company made the Paris Wheel owned by Marcel Campion. RR35 is the smaller model of this company but then has the type of pod I was looking for. RR35 is 35 meters high, so I decided to make mine scaled at 1/35. My project was designed on SOLIDWORKS for the design and printed on my stock CR10. The wheel is quite big, 1 meter tall, and almost as wide. For those who always tune the bed leveling, be aware that I made the bed leveling before starting the project and never tuned it again after the hundreds of parts printed. Tuning was made with a paper sheet, and that's all. The Leroy Merlin Mirror is on the bed. For those who always complain about part adhesion on the bed, be aware that I use Scotch glue stick on the bed: once before starting and a second time on top of the first one after the wheel and legs before starting the pods and ground structure. That's all. This machine doesn't require many adjustments from my point of view. All prints were made with PLA @ 0.2 mm layer, speed 45 mm/s, bed 60 °C, and depending on the filament, around 225 °C. Pods required support. Infill should be 20% most of the time, and it should be increased for the legs. Mine seems a little too flexible with 20% but it works. Most of the assembly is made with screws M2 x 12 mm 45° head. You need a huge number, but it's not so expensive. French supplier here: https://www.bricovis.fr/std/accueil.php You also need some M2x20, some nuts M2, and a few M3 screws for the legs if you want to use screws. You can also design some 3m rods to fit inside the assembly. You need some M3 x 8 mm no head screw to join both parts of the wheel spokes. This project is designed with holes for screws a little bit too small because I prefer to drill at the exact dimension. Then you will need 2 & 2,5 & 3 & 4 mm drills. There are some ball bearings: for pods vertical rotation, for pods rotation during wheel rotation, and for wheel rotation. On the pods, you need 48: 604ZZ 4x12x4 On the wheel junction connectors, you need 48 MR63ZZ 3x6x2.5 On the wheel main rotation, 2 604ZZ 4x12x4 These can easily be found on Ebay. You will also need some 4mm rods and 3mm rods. This project is not finished on the electronic point of view but complete on the construction point of view. It can run with 5V power from a small cell phone power pack or plug to a cell phone USB charger. The USB power pack is located in the ground structure. Rotation is made with a small geared motor already used in the wind turbine project. This time, the gear ratio is different to provide 2 RPM which is the maximum speed on the RR35 data sheet. You can find it on Ebay: N20 Micro Gear Motor 6 V -100 rpm In the files, parts are stored in Zip files per function then you can identify which part goes where. Looking at the pictures will also help. For final assembly, you should use a plate to have a good positioning of the leg. I suggest printing the ground structure also before fitting the ground connectors definitively. It requires moving some leg ground plates to adjust with the ground structure. I would like to add some people scaled at 1/35 but did not find yet. Playmobil people should fit then if you have children playing with Playmobil, and enough space... I will add some files when Arduino nano will be ready to control some lighting and rotation speed. I want a ramp up and down and stop always in the same position like the real thing. Hope you will enjoy this project.