Thread replies: 7
Thread images: 3
Thread images: 3
Anonymous
Trampoline slingshot canon 2016-08-11 20:07:30 Post No. 1036933
[Report] Image search: [Google]
Trampoline slingshot canon 2016-08-11 20:07:30 Post No. 1036933
[Report] Image search: [Google]
File: mAdEUbc3qzbxp-3a6Y_d-aw.jpg (5KB, 225x225px) Image search:
[Google]
5KB, 225x225px
Hey /diy/ !
I'm plan on building a catapult/slingshot contraption.
It's to be used in a movie to shoot debris in a horizontal direction to enhance an exploding effect.
I'm planning on shooting sand, wood chips, pieces of styrofoam, flour.
My plan so far:
I plan on using a small trampoline and make a wooden frame so it stands upright.
Attach a bucket (or a similar container) to the middle of the trampoline netting.
Make a handle on the back end of the container.
Fill the bucket, pull back as far as I can. Fire.
Does this sound ok to you guys? Anything i might look out for when building or shooting a thing like this? It's not going to directly fire in the direction of people. But i'm still concerned for safety. I've never build anything like this before.
Things i might add:
- some sort of trigger device (i thought of using big tensioning straps which truckers use for a quick release, haven't thought of something better yet, but there must be a better way)
- reinforcement of the trampoline cloth to maybe prevent tearing
Thanks in advance for any help, I'd really appreciate it.
>>
File: EM51314_1000.jpg (72KB, 1000x500px) Image search:
[Google]
72KB, 1000x500px
>>1036933
The tension straps I was talking about.
I'm affraid I might hurt myself if I use these as a release, they could slap all over the place.
>>
>>1036939
Ratchet straps are pretty hard to release mate.
>>
>>1036958
ratchet strap it back, then clip on a quick release, remove straps.
I don't think a trampoline will fling shit far enough to make for a very realistic explosion, or even a very hollywood explosion.
Why not make an air gun? Surely it'd be easier. Compressed air, switch, tube and whatever you're shooting.
>>
>>1036960
>quick release
mythbusters isnt real life, bro
>>
>>1036958
>>1036960
Air gun is not a real option in this case. But I will try it on another film later on.
I think a trampoline will at least shoot far enough in this case. It doesn't need to be an enormous blast. Just some debris flying off.
Ratchet straps are indeed too tight to release with a lot of pressure. And will release sloppy I think.
Going to look into some kind of quick release, looks like a good option.
Worst case I'll be pulling it back with 2 persons and releasing it by hand. It'll be tough but kinda doable.
>>
File: tmp_24753-vaijeritalja_2t_m-1338992125.jpg (5KB, 200x117px) Image search:
[Google]
5KB, 200x117px
>>1036958
Come ON!
Ratchet straps are meant to be tightened really fucking tight and still be releasable. Without these qualities they wouldn't be used to tie down all the fucking cargo that travels the world...
They are probably too sluggish when released. Use a pic related. And diy some form of quick release.
Thread posts: 7
Thread images: 3
Thread images: 3