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Hybrid ThorJack

Post questions and info about hybrid (compressed gas with fuel) powered cannons here. This includes discussion about fuels, ratios, ignition systems, build types, safety, and anything else relevant.
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Unread postAuthor: Petitlu » Sat Apr 14, 2012 4:24 pm

it is the notch!
it is easily removed, it is not useful
the carbon tube is hollow
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Unread postAuthor: jackssmirkingrevenge » Sat Apr 14, 2012 4:46 pm

Petitlu wrote:it is easily removed, it is not useful


I think it is :) and have an idea, can you measure the diameter?

In the meantime, here's a sabot for an 8mm ball bearing in the smoothbore barrel. What I did was drill and 8.5mm hole but leave a 12.5mm diameter lip at the front end. Because of the slits, the front part is flexible and in the barrel will bend and grip the bearing tightly. However when the sabot leaves the muzzle, it will spring out and release the projectile making for smooth separation. That's the theory at least ;)
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Unread postAuthor: Gun Freak » Sat Apr 14, 2012 4:53 pm

*Long elaborate theoretical explanation"
"That's the theory at least"

Sorry but that never works :D
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Unread postAuthor: Petitlu » Sat Apr 14, 2012 4:57 pm

Max diameter: 7.5mm
Wow! Very ingenious!
It should work

EDIT : one who tries nothing gets nothing! :D
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Unread postAuthor: jackssmirkingrevenge » Sat Apr 14, 2012 5:02 pm

Gun Freak wrote:Sorry but that never works :D


I think my response is best summarised as a suggestion that you google "ipad fleshlight" :D

Max diameter: 7.5mm


Cheers, give me a few minutes...
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Unread postAuthor: Petitlu » Sat Apr 14, 2012 5:05 pm

Take your time! :lol:
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Unread postAuthor: wyz2285 » Sat Apr 14, 2012 5:06 pm

Jack, you could insure a smooth separation by left the 12.5mm lip in both end and cut the sabot all the way down, instead of only half of it.
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Unread postAuthor: jackssmirkingrevenge » Sat Apr 14, 2012 5:33 pm

wyz2285 wrote:Jack, you could insure a smooth separation by left the 12.5mm lip in both end and cut the sabot all the way down, instead of only half of it.


If you cut it in half completely then you would need a separate pusher plate, and a three part sabot is more time consuming than a one part one ;)

Speaking of three part sabots though, this might work for the arrow. My concern would be the shaft snapping in the barrel because the arrow is centred on the tips.
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Unread postAuthor: Petitlu » Sat Apr 14, 2012 5:53 pm

cool the shoe!
acceleration will not break the arrow?
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Unread postAuthor: jackssmirkingrevenge » Sat Apr 14, 2012 5:55 pm

Hopefully by keeping it centred it won't be allowed to bend to the point of breaking, but I can't guarantee that you won't get a shower of carbon fragments out of the muzzle :D
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Unread postAuthor: Petitlu » Sat Apr 14, 2012 6:09 pm

the arrow can break, it is cheap!
But to the impact vaporized ... the arrow! :D
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Unread postAuthor: Crna Legija » Sat Apr 14, 2012 8:21 pm

in the barrel it can only bend 6 or so mm im sure they bend more then that when shot from a bow and don't brake that often.

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Unread postAuthor: Petitlu » Sun Apr 15, 2012 2:09 am

yes for sure!
But the hybrid is more powerful than the bow so the impact there will be more damage, in addition to a target harder than the yellow straw!
:D
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Unread postAuthor: al-xg » Sun Apr 15, 2012 3:16 am

Breaking on impact is one thing, and is most likely if the target is hard, it's easy to break arrows that way even from a basic bow. Especially the cheap field tip arrows.

However, I'd be surprised to see an arrow brake from acceleration. If it somehow got jammed maybe, but even then it would have limited space to bend.
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Unread postAuthor: Crna Legija » Sun Apr 15, 2012 3:38 am

al-xg wrote:Breaking on impact is one thing, and is most likely if the target is hard, it's easy to break arrows that way even from a basic bow. Especially the cheap field tip arrows.

However, I'd be surprised to see an arrow brake from acceleration. If it somehow got jammed maybe, but even then it would have limited space to bend.


Exactly what I was thinking.
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