Catapult Inspired By Leonardo da Vinci (remix)
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I have changed the "bucket" to be wider for bigger "projectiles" and added a thumb wheel of easy range adjustment. But…
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Model information
- Source
- Printables
- Category
- Engineering
- License
- Creative Commons — Attribution
I have changed the "bucket" to be wider for bigger "projectiles" and added a thumb wheel of easy range adjustment.
But the bigger redesign is the fulcrum. I split it into two parts to be printed easier.
Now the hole for the axle goes now through all the way, so a longer threaded is needed
EDIT 4/30/2019
As mentioned below I managed to break/wear out the spring rather quickly.
Hence I added a beefed up version. This might not be the engineering approach of Leonardo as he had presumably no access to rubber bands. I use my catapult as an office toy and am therefore not too concerned with historical accuracy.
P.S. I will need to redesign the spring and strengthen it. It suffered material fatigue due to tightening the rubber bands to much, because I wanted to increase range and power. Stay tuned!
P.P.S: Here is the original:
https://www.thingiverse.com/thing:3436588
Print Settings
Printer Brand:
Prusa
Printer:
i3 MK3
No
Supports:
No
.1
Custom Section
Materials Needed
M4 x 25mm Cap Screws - 6rnM4 Nut - 1rnM4 x 15mm Cap Screws - 2rnM4 x 20mm Cap Screws - 3rnM4 x 35mm Cap Screws - 1rnrnM6 x 35mm Cap Screws - 6rnM6 Threaded rod 150mm longrnM6 Hex Nut - 9rn(M6 Nyloc Nut - 2, replace 4 regular nuts)rnM6 Washers - 7rnrnAn assortment of elastic bands (smaller ones will give greater power for the arm)
Category: Engineering