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Built a BB Machine Gun? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Unread postAuthor: jackssmirkingrevenge » Sun Aug 28, 2011 10:22 am

Labtecpower wrote:I think 1500 fps is certainly possible with a strong spring-piston airgun with .20 gram bb's. It would hurt accuracy however.


Not an airsoft one though, it would have the be a converted 12 ft/lbs plus springer.
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Unread postAuthor: Labtecpower » Sun Aug 28, 2011 10:28 am

And it would damage the piston because of a lack of "air bumper" effect.
I believe Weihrauch and Gamo claim to break the sound barrier with some airgun models?
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Unread postAuthor: jackssmirkingrevenge » Sun Aug 28, 2011 10:36 am

Labtecpower wrote:And it would damage the piston because of a lack of "air bumper" effect.


... it could be compensated for with a suitable detent ;)

I believe Weihrauch and Gamo claim to break the sound barrier with some airgun models?


Weihrauch make quality airguns and have no need to resort to such claims. Gamo on the other hand...

good lord, they're making PCPs now...
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Unread postAuthor: warhead052 » Sun Aug 28, 2011 10:38 am

Yeah, I'm not aiming for 1500 fps yet... I don't even have a pump that would get me the pressure I would need, nor do I have the tools. I may be able to make one that shoots at around 700 fps, and that would be with a steel bb, and I would deem it unsafe for airsoft.
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Unread postAuthor: Labtecpower » Sun Aug 28, 2011 10:45 am

... it could be compensated for with a suitable detent :wink:


That's true.

Weihrauch make quality airguns and have no need to resort to such claims. Gamo on the other hand...


German quality :D At school we have some >60 year old lathes made by some German manufacturer. Still work perfectly :)
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Unread postAuthor: wyz2285 » Mon Aug 29, 2011 4:35 am

1500 fps with a spring piston airsoft?
:lol: 457.2 meters per second supersonic airsoft gun :lol:
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Unread postAuthor: jackssmirkingrevenge » Mon Aug 29, 2011 5:19 am

wyz2285 wrote:1500 fps with a spring piston airsoft?
:lol: 457.2 meters per second supersonic airsoft gun :lol:


If someone was willing to replace the barrel and make a good detent mechanism on a full power spring rifle, it's more than possible.

Personally, I like my HW97K too much to subject it to such indignity ;)

Labtecpower wrote:At school we have some >60 year old lathes made by some German manufacturer. Still work perfectly :)


Sweet! If they're >66 years old, who knows what they were making before...
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Unread postAuthor: wyz2285 » Mon Aug 29, 2011 5:46 am

If they're >66 years old, who knows what they were making before...
Nazi´s top secret weapons during the last days of the war :D
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CpTn_lAw wrote::D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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