by ollie91297
Catapult inspired by Leonardo da Vinci, more powerful than a simple desk toy, roughly 110mm tall (frame) Easily printed within 24 hours, have fun!
Be sure to upload photos of yours when its complete! Id love to be able to include them in my end of semester presentation! Thanks!
After Printing
Some holes may have to be drilled out larger. The holes on the top of the A frames may need enlarging to allow smooth rotary motion of the fulcrum. Small elastic bands should be fitted around the trigger mechanism and main C spring (see photos).
Custom buckets can be designed and fitted providing they use a 4mm hole to secure the screw
Introduction
A prototype of a larger model which will be used for a university project where students have to create a catapult that can fire 1-5 meters and is adjustable. Still a work in progress, this is roughly 1/2 size of the real model which has to be made from MDF with 30 or less fasteners. This was made purely to analyse the motion of components in conjunction to one another.
Fixings Required
An assortment of M4 cap screws roughly 12
M6 cap screws X7
M6 threaded rod roughly 100mm long
M4 nut X1
M6 nuts X5
Washers are optional
An assortment of elastic bands (smaller ones will give greater power for the arm)
-A bunch or washers (or a nut on each bolt) to space the bolts out from the frame for the bottom 4 M6 bolts
