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Solid Rubber Pistons.

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Unread postAuthor: jackssmirkingrevenge » Mon Dec 10, 2007 11:30 pm

ALIHISGREAT wrote:hooray for lego! possibly the most useful thing ever invented! i must have a look at my old lego at some point, there may be something useful iding in there.


here here :D

Image


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Unread postAuthor: schmanman » Tue Dec 11, 2007 6:12 am

where are the legos in the bottom picture?

in the opaque tube /w/ dividers?
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Unread postAuthor: jackssmirkingrevenge » Tue Dec 11, 2007 6:34 am

Yes, I drilled 2x2 bricks out and used them as baffle spacers for a suppressor.
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Unread postAuthor: psycix » Tue Dec 11, 2007 7:43 am

JSR what is the function of the lego on the top picture?
Just wondering :)

NVM i just found your Coin gun thread :D
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Last edited by psycix on Tue Dec 11, 2007 7:52 am, edited 1 time in total.
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Unread postAuthor: jackssmirkingrevenge » Tue Dec 11, 2007 7:49 am

click the pic ;)
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Unread postAuthor: schmanman » Tue Dec 11, 2007 8:22 am

nice idea.

legos+spudguns= :D
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Unread postAuthor: Hubb » Tue Dec 11, 2007 9:29 am

It does make sense to use all rubber for the piston. I'm wondering if it would be optional for a larger launcher, say 1.5" barrel.

The only way I can see this is to glue several pieces of washers together, for I've never found any solid rubber that would work for a size such as this. My concern would be the weight of the piston and friction caused by the rubber (which may be solved bu lubing).
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Unread postAuthor: ALIHISGREAT » Tue Dec 11, 2007 9:47 am

schmanman wrote:nice idea.

legos+spudguns= :D


Did anyone used to have K'nex? i can see that being useful and the rods are 6mm so i might sharpen some and shoot them out of my 6mm 'sniper' (when i finish it)

and as for the rubber pistons i might try it at some point when i decide it is time to make a large bore launcher... but how much better is it than epoxy, does epoxy need lubing like rubber pistons and how does the wieght compare?

edit: and another use for lego! making realy annoying things :D

i made this a few years ago to annoy my little brother with and it turned out to be quite powerful, it shoots an AA battery 5m but AAs are wuite heavy so its pretty impressive :D

http://www.spudfiles.com/forums/album_showpage.php?pic_id=348

sorry about not being able to put the pic in my post, i just can't do it :x
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