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long range ammo MiniBoy Mark I

Post about things you have launched or thought about launching. Also post about various materials used for building cannons. No posts about explosive projectiles!
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Unread postAuthor: al-xg » Tue Oct 18, 2011 7:40 am

Some sort of sound emitting device would be good, although if its a windy day... :)

As long as you have a rough estimate of the flight time, doesn't really matter how the smoke is triggered, in fact you want it to last long enough for
you to get nearer the estimated impact zone.

Even a simple fuse would do, although you'd want a way to easily abort if required :D
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Unread postAuthor: jackssmirkingrevenge » Tue Oct 18, 2011 7:48 am

al-xg wrote:Even a simple fuse would do, although you'd want a way to easily abort if required :D


Image

I agree that cake mix is probably not going to last long enough to be significant...
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Unread postAuthor: al-xg » Tue Oct 18, 2011 1:12 pm

Oh no...


:roll:


.PNG coat hanger... did you just find that on google images ? :lol:
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Unread postAuthor: jackssmirkingrevenge » Tue Oct 18, 2011 1:26 pm

al-xg wrote:did you just find that on google images ? :lol:


The little "icon" size option is convenient :)
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Unread postAuthor: al-xg » Tue Oct 18, 2011 1:57 pm

Image
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Unread postAuthor: MrCrowley » Tue Oct 18, 2011 3:10 pm

jackssmirkingrevenge wrote:I agree that cake mix is probably not going to last long enough to be significant...

Saefroch could get about a 35s burn time from one of his cakes and total flight time of the projectile would probably be around 25s give or take. With a spotter about 1km away from the estimated target zone but at a much higher elevation, I'm sure they could narrow down the zone to about 100m^2 at the least.

A fuse sounds like a good idea but how do you go about igniting it? I can't have a 1.8m fuse coming out of the barrel and I wouldn't trust the fuse igniting/staying intact if I drilled a hole through the sabot, poked the fuse through and hope flame front would ignite it. Unless there is some other way?
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Unread postAuthor: Goats spudz » Tue Oct 18, 2011 3:50 pm

[youtube]http://www.youtube.com/watch?v=LyjKbMlaMbM&feature=channel_video_title[/youtube]
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Unread postAuthor: ramses » Tue Oct 18, 2011 4:22 pm

At first I thought it was spam, but that is a great idea!

All you have to do is vacuum-pot the internals in epoxy to G harden it some.
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Unread postAuthor: al-xg » Tue Oct 18, 2011 4:26 pm

Not widely sold yet it seems... would be pretty handy though.
http://insigniaproducts.com/products/ca ... KDTR2.html
Does all seem a little dodgy for some reason...
Cheap ones available on Ebay.


Surely something could be made with a 555 IC timer, could even use SMD components, to discharge a capacitor ?
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Unread postAuthor: Goats spudz » Tue Oct 18, 2011 4:40 pm

al-xg wrote:Not widely sold yet it seems... would be pretty handy though.
http://insigniaproducts.com/products/ca ... KDTR2.html
Does all seem a little dodgy for some reason...
Cheap ones available on Ebay.


Surely something could be made with a 555 IC timer, could even use SMD components, to discharge a capacitor ?
there discontinued but you can find them cheap on the web! like here for instance http://www.ebay.co.uk/itm/Insignia-Little-Buddy-GPS-Child-Tracker-NS-KDTR2-Blue-/320777305655?pt=LH_DefaultDomain_0&hash=item4aafd13e37#ht_1485wt_1270
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Unread postAuthor: MrCrowley » Tue Oct 18, 2011 4:45 pm

Unfortunately, it's much too big to fit inside MiniBoy and I don't think the circuit has much room to be cut down to fit.
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Unread postAuthor: Goats spudz » Tue Oct 18, 2011 4:50 pm

MrCrowley wrote:Unfortunately, it's much too big to fit inside MiniBoy and I don't think the circuit has much room to be cut down to fit.
possibly this http://www.ebay.com/itm/Smallest-Spy-Live-GSM-GPRS-GPS-Tracker-Car-Child-pet-rc-/280654552292 and how do you put urls where you rename it to something like "link"
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Unread postAuthor: MrCrowley » Tue Oct 18, 2011 4:52 pm

Still too big (I can tell even without having seen the circuit).

To fit in the MiniBoy it can't be wider than 14mm.
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Unread postAuthor: ramses » Tue Oct 18, 2011 4:54 pm

MrCrowley wrote:Still too big (I can tell even without having seen the circuit).

To fit in the MiniBoy it can't be wider than 14mm.


Even if you get rid of the threaded rod and glue everything together?
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Unread postAuthor: MrCrowley » Tue Oct 18, 2011 4:59 pm

Yup, even an AA battery wont fit (perhaps the diameter is actually less than 14mm, I can't remember). Something the size of a sim card but longer would probably work great.
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