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| jackssmirkingrevenge |
 Posted: 09/05/2007 22:54 PM Post subject: 6mm hybrid design |
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space monkey
Joined: 15 Mar 2007
Posts: 6523
9946.55 Spud Bux
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As hybrids aren't really my thing, thought I'd run this by the board first - any reason why this design shouldn't work? Any tips and advice appreciated 
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| FeLeX |
| Posted: 09/05/2007 23:00 PM Post subject: |
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Captain
Joined: 10 Mar 2007
Posts: 304
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| Looks good to me but wouldn't it be hard fueling it since its such a small chamber?
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| jackssmirkingrevenge |
| Posted: 09/05/2007 23:03 PM Post subject: |
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space monkey
Joined: 15 Mar 2007
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| FeLeX wrote: | | Looks good to me but wouldn't it be hard fueling it since its such a small chamber? |
I suppose this will work well enough:
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| homedepotpro |
| Posted: 09/05/2007 23:05 PM Post subject: |
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Lieutenant Colonel
Joined: 26 Nov 2006
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| FeLeX wrote: | | Looks good to me but wouldn't it be hard fueling it since its such a small chamber? |
especially with a shrader valve. when you disconnect some air will leak out, messing with your mix. i don't know hybrids either, but i thought i would just point that out.
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| FeLeX |
| Posted: 09/05/2007 23:05 PM Post subject: |
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Captain
Joined: 10 Mar 2007
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| Hmm I guess. You would have to make an adapter wouldn't you?
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| jackssmirkingrevenge |
| Posted: 09/05/2007 23:13 PM Post subject: |
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space monkey
Joined: 15 Mar 2007
Posts: 6523
9946.55 Spud Bux
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| homedepotpro wrote: | | when you disconnect some air will leak out, messing with your mix. |
Not in my case - I added o-rings to my shock pump so when you thread it onto the schrader, it doesn't actually open the stem, the air leaks in thanks to the pressure difference.
| Quote: | | You would have to make an adapter wouldn't you? |
I was thinking of injecting through the barrel end just as you would with a combustion, closing it quickly with the burst disc then bringing it up to pressure with the schrader.
This isn't the first time I've tried something like this, here's a similar previous effort on spudtech, I just thought I'd give it another go.
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| darkmilk |
| Posted: 09/05/2007 23:39 PM Post subject: |
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Specialist
Joined: 14 Aug 2007
Posts: 55
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| what about a pure oxy mix, then he could just use a pressure gauge
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| jackssmirkingrevenge |
| Posted: 09/05/2007 23:45 PM Post subject: |
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space monkey
Joined: 15 Mar 2007
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| Not too keen on using oxygen at this point.
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| experament-u2 |
| Posted: 09/06/2007 1:34 AM Post subject: |
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Lieutenant Colonel
Joined: 26 Dec 2006
Posts: 477
602.69 Spud Bux
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it looks great jack
i love the spark gap means less hole sin your chamber
oh and making a adapter to the schradar valve shouldn't be hard.
good luck with it jack cant wait to see it
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| jackssmirkingrevenge |
| Posted: 09/06/2007 1:41 AM Post subject: |
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space monkey
Joined: 15 Mar 2007
Posts: 6523
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| experament-u2 wrote: | | good luck with it jack cant wait to see it |
I calculate it'll take two epoxy "sessions" so a couple of days 
This is a bit of cartridge test, I'm trying to get an idea of power levels to see if it's worth the expense of getting some machining work done professionally.
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| dongfang |
| Posted: 09/06/2007 2:26 AM Post subject: |
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Lieutenant Colonel
Joined: 27 Aug 2006
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Hey,
I like your use of BRASS for a barrel. Finally someone saw the light Brass is as easy to machine and to braze as copper, it weighs a little less and it is much harder and stiffer.
Aluminum would be nice too, but there is the problem of joining it to other things; either you need fancy welding equipment, or you have to take chances with glue.
Regards
Soren
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| jackssmirkingrevenge |
| Posted: 09/06/2007 2:32 AM Post subject: |
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space monkey
Joined: 15 Mar 2007
Posts: 6523
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| I always use brass for airsoft barrels but aluminium would actually be a better idea for the hypothetical cartridge body, a lighter cartridge will lessen stresses on the breech mechanism and be less likely to damage itself when it hits the ground. I don't believe I'd be "taking my chances" with glue, it's pretty strong stuff.
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| darkmilk |
| Posted: 09/06/2007 14:51 PM Post subject: |
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Specialist
Joined: 14 Aug 2007
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| jackssmirkingrevenge wrote: | | Not too keen on using oxygen at this point. |
why not?
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| DYI |
| Posted: 09/06/2007 15:05 PM Post subject: |
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Rear Brigadier
Joined: 07 Jul 2007
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| Quote: | jackssmirkingrevenge wrote:
Not too keen on using oxygen at this point.
why not? |
Probably because of the dangers of autoignition and/or detonation that they pose.
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| paaiyan |
| Posted: 09/06/2007 15:20 PM Post subject: |
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Ascendant Defenestrator
Joined: 27 Dec 2006
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| What mix will you take it to? And I like the way you use the schrader as part of the ignitor, ingenuity at work.
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