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Marble sized barrel

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Marble sized barrel

Unread postAuthor: brumby » Sun Sep 17, 2006 8:17 pm

Does anyone know the right sized barrels to shoot marbles?
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Unread postAuthor: ProfessorAmadeus » Sun Sep 17, 2006 8:25 pm

1/2 inch sch. 40
and this is soo my message can be posted.
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Unread postAuthor: POS » Mon Sep 18, 2006 1:42 am

or 16 mm ID, tyou can use a 18 mm copper pipe, they are exellent for marbles.
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Unread postAuthor: killagorrila99 » Mon Sep 18, 2006 1:51 am

Try 15mm black irigation pipe like on my mg.
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Unread postAuthor: POS » Mon Sep 18, 2006 2:36 am

15 ? A marble is 16 mm ....
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Unread postAuthor: killagorrila99 » Mon Sep 18, 2006 2:47 am

Not in australia 8)
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Unread postAuthor: CS » Mon Sep 18, 2006 2:48 am

If I recall correctly, 'pipe' generally is measured by its ID, and 'tube' of its OD. Either way, here in the US the ID of a pipe is similar to the measurement given. I dont know why in hell it is, but pipes tend to be slightly over there 'pipe size'. Same might be with the meteric system. Possibly a 15mm 'pipe' actually has a ID of ~16mm. Just a hunch.
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Unread postAuthor: MrCrowley » Mon Sep 18, 2006 4:06 am

yeah, 40mm PN12(175psi) pipe has an I.D of 43mm and 15mm pipe has an I.D of 17.2mm i think
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Unread postAuthor: GalFisk » Thu Sep 21, 2006 9:37 am

18mm metric copper tube is almost perfect, if you can get it. Some marbles may be too big though, because they're manucactured with quite wide tolerances.
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Unread postAuthor: mark.f » Thu Sep 21, 2006 9:04 pm

I don't know if this is helpful to all the SI nazis, but averaging all my marble measurements gave me an O.D. of .566"
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Unread postAuthor: ProfessorAmadeus » Thu Sep 21, 2006 9:27 pm

Is that measured with those new calipers of Yours?
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Unread postAuthor: mark.f » Fri Sep 22, 2006 5:29 am

Yes. I measured it in English class, too.
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