My wife mentioned that I should consider naming the device. I think I have to agree. She wants to name it “Bob The Catapult” but personally I think any device that will be capable of throwing fire over 500 ft needs to have a female name. Thoughts? Could use some suggestions.
One of the things I had to think through was how to make the pivot point for the throwing arm. Bit of time staring at the shelves in Home Depot did the trick (TIP: Home Depot employees get *really* confused when they ask if they can help you find something and you tell them “catapult parts”).
Here’s what I came up with:
The pivot needs to fit snugly over 2″ PVC but provide a 90 degree adapter to throwing arm. The pivot also needs to rotate freely but without so much slop that it blows itself up. I ended up taking a 3″x3″x2″ T (middle of pic) as well as two 3″ to 2″ adapters (shown on each end of the “T”). I then dremeled out the adapters till the 2″ pipe could slide easily through it. The result is what you see above. I just need to glue the adapters into the “T” and this should work out quite nicely.
Device is getting taller and has more supports added in. I moved the winch to the other side so that the remote controls are easily accessible. I don’t want to be anywhere near this thing the first time I go for maximum thrust.