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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 » Tue Mar 20, 2012 4:42 pm

:oops:

Yes it's true!
As I saw a nice spark with an atmospheric pressure 10bar as I thought it would work too ...
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Unread postAuthor: Gun Freak » Tue Mar 20, 2012 6:22 pm

Hah you would think so, but with 10x more air in the chamber that's a lot more resistance for the spark.

Man, you really don't mess around :D Very nice work on this project (as always... :P ), Petitlu. You're brilliant!
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Unread postAuthor: POLAND_SPUD » Wed Mar 21, 2012 12:28 am

damn that's nice... the flash makes it look more like a real gun than a spudgun


ohh and you used loud speakers connectors - I saw them somewhere and I though 'damn these would be useful for an ignition module'
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Unread postAuthor: jackssmirkingrevenge » Wed Mar 21, 2012 12:57 am

POLAND_SPUD wrote:I saw them somewhere and I thought 'damn these would be useful for an ignition module when I eventually get round to building my own hybrid in 2073'


:D
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Unread postAuthor: Petitlu » Wed Mar 21, 2012 2:39 am

Thank you!

For the spark, I hope it will be up to Mix40!
To make taking the hybrid, we exceed Mix20?

Today at Mix20 with barrel shot and bullet, we'll see the noise! I think the barrel will attenuate the sound.

I love the form of the flame!

I 30m wire connectors speaker, I used it to take off my water rockets before putting a remote control.
For rockets, I try to beat the world reccord American! (631m) :D
I polycarbonate manufactured fuselages / aramid.

I'm getting results with ThorJack, it encourages me! :lol:
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Unread postAuthor: MrCrowley » Wed Mar 21, 2012 2:56 am

If you do go up to 20x mixes, be careful about using copper barrels. I did this at only a 10x mix:
[youtube]http://www.youtube.com/watch?v=aZgWewJAhtk[/youtube]

:D

I've been meaning to try higher mixes on my small hybrid but I need a gauge that reads above 145PSI first.
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Unread postAuthor: Petitlu » Wed Mar 21, 2012 3:06 am

Thank you board!
But my barrel is a rifled barrel steel black powder .50 caliber!
Awesome video, I hope you did not get hurt
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Unread postAuthor: jackssmirkingrevenge » Wed Mar 21, 2012 3:45 am

MrCrowley wrote:I've been meaning to try higher mixes on my small hybrid but I need a syringe first.


As you reside in a nation of sheep shaggers surely there are plenty of agricultural stores that can supply you with a sizeable one ;)
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Unread postAuthor: MrCrowley » Wed Mar 21, 2012 3:55 am

jackssmirkingrevenge wrote:
MrCrowley wrote:I've been meaning to try higher mixes on my small hybrid but I need a syringe first.


As you reside in a nation of sheep shaggers surely there are plenty of agricultural stores that can supply you with a sizeable one ;)

I can't use a syringe to meter out 206PSI of air for a 15x mix :wink:
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Unread postAuthor: jackssmirkingrevenge » Wed Mar 21, 2012 4:01 am

MrCrowley wrote:I can't use a syringe to meter out 206PSI of air for a 15x mix :wink:


That's odd, I managed to use syringe fuelling up to 28x mix. Hmmm...
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Unread postAuthor: MrCrowley » Wed Mar 21, 2012 4:05 am

jackssmirkingrevenge wrote:
MrCrowley wrote:I can't use a syringe to meter out 206PSI of air for a 15x mix :wink:


That's odd, I managed to use syringe fuelling up to 28x mix. Hmmm...

Haha, ok well yeah I could but I mean the size of the syringe would be getting a bit much :D

Wouldn't I'd need a syringe about 6+ litres in volume for a 400-500ml chamber (to fill it in one go)? And then the chamber of my large hybrid is 3-4x bigger than my small hybrid and I want to take that past 10x mixes as well (perhaps not as high as 15x).

Anyway, when do you plan on trying 40x mixes Petitlu?
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Unread postAuthor: Petitlu » Wed Mar 21, 2012 4:35 am

heuuu ... gradually, I'm careful!
Within a week I will be at Mix40! my maximum!
Then the tests are finished and I will make the look of Thorjack
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Unread postAuthor: jackssmirkingrevenge » Wed Mar 21, 2012 4:37 am

Wait, what?

Say you have a 500mL chamber and are using propane.

To 10x, you need to inject 4.2% x chamber volume x 10.

In our case, this is 4.2/100 x 500 x 10 = 210mL

That's two squirts from this: http://www.ebay.co.uk/itm/1-x-100ML-LAR ... 23116d4693
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Unread postAuthor: MrCrowley » Wed Mar 21, 2012 4:39 am

jackssmirkingrevenge wrote:Wait, what?
Say you have a 500mL chamber and are using propane.

To 10x, you need to inject 4.2% x chamber volume x 10.

In our case, this is 4.2/100 x 500 x 10 = 210mL
I'm talking about air.
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Unread postAuthor: jackssmirkingrevenge » Wed Mar 21, 2012 5:01 am

Ohhhhhhhhhhhhhhhhhhh...

:oops:

Well, you have a shock pump ;) and strong Kiwi arms from... sharpening spear:D
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