Popping the balloon

cypressfalls Robert
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Re: Popping the balloon

Postby cypressfalls Robert » April 10th, 2010, 11:24 pm

Primate wrote:The easiest thing is probably to hook a balloon up to a microswitch so when it deflates, it releases the switch.

that sounds awsome, right now our balloon has BB's inside of it and when popped they go down a tube and pile on to a micro switch...but it only works 8 out of ten trys and I'm not comftrable with that.

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Primate
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Re: Popping the balloon

Postby Primate » April 11th, 2010, 8:02 am

cypressfalls Robert wrote:
Primate wrote:The easiest thing is probably to hook a balloon up to a microswitch so when it deflates, it releases the switch.

that sounds awsome, right now our balloon has BB's inside of it and when popped they go down a tube and pile on to a micro switch...but it only works 8 out of ten trys and I'm not comftrable with that.
Anything that has failed once during trial runs will absolutely fail at competition, at least from my experience >.<. Using weights isn't such a bad idea, though it's probably better if they're not inside the balloon. We had the balloon wedged into a piece of piping, and then suspending a weight. When the balloon popped, the weight fell and hit our syringe. It was reliable, just a pain to build. The balloon-on-microswitch was what our regional winners used, so I'd definitely recommend it over any other contraption.
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Re: Popping the balloon

Postby rocketchicka » April 28th, 2010, 12:49 pm

to pop the balloon I'm using a razor blade on the end of a lever. Generally, i've noticed that if you pop the balloon towards the top where you tie it off, it dosen't explode and usually stays in one piece so u don't have to worry about being DQed for flying balloon shards. my balloon raises the golfball 30cm when it pops.
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