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First post, First BBMG

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 » Thu Mar 15, 2012 1:29 am

kustomkb wrote:I wonder if the irregular shape made them fly better. Like a dimpled golf ball?


Nope.

This was a joke article ;)
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Unread postAuthor: kustomkb » Thu Mar 15, 2012 9:45 pm

Thanks for the humorous link Jacks,

but as stated, dimpled golf balls do fly better than smooth ones.

I don't think we can compare an aerodynamic bullet, coming out of a rifled barrel, with a sphere, exiting a smooth bore.

I'll have to do some field tests... regardless, .43g is gonna be way better :)

Cheers.
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Unread postAuthor: jackssmirkingrevenge » Fri Mar 16, 2012 12:22 am

kustomkb wrote:but as stated, dimpled golf balls do fly better than smooth ones.


That may be true, but we're in a different velocity range here, so I don't think the comparison stands. Humanity wastes a heck of a lot of energy fighting drag in general, if there was any benefit of dimples on objects travelling at high subsonic velocities, airliners would be covered in them ;)

Ultimately, if you want the ultimate destructive performance without changing any of the launcher specs, you should go for steel BBs.

I find that using HPA lets even plastic BBs be pretty destructive though, this is with 0.25g plastic BBs with 850 psi behind them:

[youtube]http://www.youtube.com/watch?v=otpqK8GybcQ[/youtube]
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Unread postAuthor: Hubb » Fri Mar 16, 2012 1:30 am

Very nice. Hope you stick around and continue to build with us. And the stop motion assembly is priceless...
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Unread postAuthor: sharpshooter11000 » Fri Mar 16, 2012 3:05 am

I need to stop looking at awesome milled parts :? After a while I decided to buy a lathe but now you're making me want a mill too :lol:
Anyway, lovely gun, love all the machined parts!
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Unread postAuthor: oneeye » Tue Jul 17, 2012 8:25 pm

awesome gun!!!!! simple design,well built and you have perfection
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Re: First post, First BBMG

Unread postAuthor: PracticalProjects » Thu Feb 13, 2014 4:50 pm

very nice! may I ask did you use any o rings to seal the chamber? s
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Re: First post, First BBMG

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Re: First post, First BBMG

Unread postAuthor: jackssmirkingrevenge » Thu Feb 13, 2014 6:38 pm

O-rings would improve efficiency but in practice you would not notice the difference with a tight fit.
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Re: First post, First BBMG

Unread postAuthor: PracticalProjects » Fri Feb 14, 2014 2:08 pm

ahh right, cheers for your reply, I'm planning to build one of these next week now!
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Re: First post, First BBMG

Unread postAuthor: kustomkb » Sun Feb 16, 2014 10:02 pm

Thanks for the kind words to all.

I didn't use o-rings, just a snug fit, like JSR said.

I'm not around much but just popped in to browse for some idea's, stay tuned...
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Re: First post, First BBMG

Unread postAuthor: jackssmirkingrevenge » Mon Feb 17, 2014 7:33 am

Looking forward to what you come up with :)

kustomkb wrote:stay tuned...


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