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Rear loading combustion (German production xD)

Built a combustion cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Rear loading combustion (German production xD)

Unread postAuthor: freder » Sat Jun 14, 2008 8:29 am

Hey,

this is an old combustion I startet to make a couple of months ago.
Forgott a handle for the ignitor :lol: - but I gave it a paintjob.

My rear loading mechanism:
I don´t push the ammo down the barrel because I can easily pull out
the "stock" and push the ammo in from the back side.

I cut the potatoes by pressing them threw the pipe in the stock.

Some other specs:

C:B: ~2:1
Chamber: 25 cm long.
Barrel: 60 cm long.
Ignistion: somthing like a BBQ-lighter
Other: Fan + switch in front grip

If you have any questions just ask :wink:
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Attachments
my_KK.jpg
Gun with gas (deo) and BB-Shell
my_KK.jpg (15.93 KiB) Viewed 2404 times
10-04-08_1712.jpg
the fan
10-04-08_1712.jpg (31.42 KiB) Viewed 2404 times
10-04-08_1714.jpg
the ignitor - pretty ghetto I know xD
10-04-08_1714.jpg (37.83 KiB) Viewed 2404 times
10-04-08_1715.jpg
the switch for the fan
10-04-08_1715.jpg (30.16 KiB) Viewed 2404 times
10-04-08_1717.jpg
the barrel - rear view
10-04-08_1717.jpg (18.91 KiB) Viewed 2404 times
10-04-08_1716.jpg
the stock & potatoe cutter
10-04-08_1716.jpg (20.4 KiB) Viewed 2404 times
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Unread postAuthor: bigbob12345 » Sat Jun 14, 2008 9:05 am

I like it
I think it deserves a propane meter though.
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Unread postAuthor: frankrede » Sat Jun 14, 2008 9:26 am

Its lacking H&K's aesthetics, but the ingenuity is there, nice job man
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Unread postAuthor: starman » Sat Jun 14, 2008 11:06 am

I like the concept a lot actually. Looks like you lost a little patience with the tape jobs at the end. I'm with BB, A syringed type metered propane fuel system would be nifty with this.

Be sure you lock that breech plug down well. I could see that thing bloodying your nose (or worse) after a shoulder shot if not.
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Unread postAuthor: freder » Sat Jun 14, 2008 11:34 am

Well I´m not in to the propane stuff but maybe I´ll try once :D

@ starman:

Actually you shoulder fire it by using the breech plug as a stock.
So you just have to push your shoulder hard on the plug, hold on tight to
the front grip and jam the chamber between your arm and body because
this gun has a bad ass recoil :twisted:
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Unread postAuthor: STHORNE » Sat Jun 14, 2008 12:48 pm

Very nice work. But yeah....a propane meter would do it some justice.
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Attachments
mold.PNG
Oh, btw....if I'm not mistaken...I think that is mold! lol

looks like you haven't shot it in a while eh?
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Unread postAuthor: freder » Sun Jun 15, 2008 5:34 am

haha... actually that isn´t mold. Those are holes I drilled in.
I first thought I could drill in one big hole for the lighted gas but noticed
if I had done that it would have been hard to push the potatoes in ( or somthin else). So I drilled in a few small ones.
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Unread postAuthor: freder » Sun Jun 15, 2008 6:41 am

Here´s a small sketch of how it works ( not shown: fan, cap, ignition)
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schema.JPG
This should show it better
schema.JPG (15.96 KiB) Viewed 2303 times
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