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Camlocks for quick burst disk/barrel change problem.

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Camlocks for quick burst disk/barrel change problem.

Unread postAuthor: Contra » Mon Feb 08, 2010 5:02 pm

I have the sdr21 1.5 in pipe sleeved into a sch 80 2" pipe that is 6.5 feet long. When I attatch it to the camlock that is on my chamber and pick the entire gun up it bows quite a bit there due to the barrel being so heavy. Do all barrels have this problem with bending at the camlocks? The design is almost exactly like Starman's with the burst stumps, but on his video it doesn't seem like his barrel is nearly as heavy as mine. Anyone else have this problem?
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Unread postAuthor: deathbyDWV » Mon Feb 08, 2010 5:33 pm

I think starman's barrel isn't sleeved. If it is then it's only partway down the barrel. That would keep it lighter and not bend the camlock so much. You could also make a barrel support somehow. Maybe a 4foot long piece of angle iron connected to the chamber with big hose clamps...
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Unread postAuthor: BigGrib » Mon Feb 08, 2010 9:35 pm

what material are your camlocks vinyl or aluminum? i have an sdr21 1.5" 6.5' barrel with aluminum camlocks and it is not sleeved at all. i have no bending whatsoever. I would have sleeved mine a little bit if i could have found sch but i was only gonna do mine about a foot down the barrel.
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Unread postAuthor: starman » Tue Feb 09, 2010 10:10 am

Depends on which barrel you are referring to. The one designed for Mr Morph is sleeved in sched 80 from the male camlock out to the muzzle. From the camlock to inside the chamber is the SDR21 only. There is zero opportunity to bend here.

The barrel and burst disk coupler I built for Triple Thunder...it is 6.5' and sleeved all the way with sched 80. It is rather heavy and has a small amount of give at the camlock with the plastic camlocks. The metal camlocks provided a much stiffer connection albeit with still a slight amount of give. If you turn the locks on the camlock North and South, you'll see more resistance to the barrel bowing.

However, even with the give that's noted here, it was still very functional in all cases. A 6.5' sleeved golfball barrel is rather weighty and will offer a LOT of leverage.
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Unread postAuthor: Contra » Wed Feb 10, 2010 5:44 pm

Yes, I am talking about trip thunder. So going with the metal ones will help, damn, those are so expensive.
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Unread postAuthor: spudtyrrant » Wed Feb 10, 2010 6:10 pm

Contra wrote: damn, those are so expensive.

not as bad as you might think
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Unread postAuthor: metalmeltr » Mon Feb 15, 2010 8:02 am

How small of a camlock can you buy?
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Unread postAuthor: starman » Mon Feb 15, 2010 10:26 am

McMaster sells them down to 1/2" and as high as 6".
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Unread postAuthor: metalmeltr » Tue Feb 16, 2010 8:41 am

Thanks 1/2" is the size I need.
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Unread postAuthor: WetWorks » Tue Feb 16, 2010 2:02 pm

Contra,

Most camlocks have a rubber gasket (of some thickness, I might add) in the female portion of the coupling.

This will cause at least some movement of any barrel.

I suggest some type of barrel support if the cannon is an over/under type, or just brace the barrel with your hand if it is inline.
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