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Marble sized barrel
Posted: Sun Sep 17, 2006 8:17 pm
by brumby
Does anyone know the right sized barrels to shoot marbles?
Posted: Sun Sep 17, 2006 8:25 pm
by ProfessorAmadeus
1/2 inch sch. 40
and this is soo my message can be posted.
Posted: Mon Sep 18, 2006 1:42 am
by POS
or 16 mm ID, tyou can use a 18 mm copper pipe, they are exellent for marbles.
Posted: Mon Sep 18, 2006 1:51 am
by killagorrila99
Try 15mm black irigation pipe like on my mg.
Posted: Mon Sep 18, 2006 2:36 am
by POS
15 ? A marble is 16 mm ....
Posted: Mon Sep 18, 2006 2:47 am
by killagorrila99
Not in australia 8)
Posted: Mon Sep 18, 2006 2:48 am
by CS
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.
Posted: Mon Sep 18, 2006 4:06 am
by MrCrowley
yeah, 40mm PN12(175psi) pipe has an I.D of 43mm and 15mm pipe has an I.D of 17.2mm i think
Posted: Thu Sep 21, 2006 9:37 am
by GalFisk
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.
Posted: Thu Sep 21, 2006 9:04 pm
by mark.f
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"
Posted: Thu Sep 21, 2006 9:27 pm
by ProfessorAmadeus
Is that measured with those new calipers of Yours?
Posted: Fri Sep 22, 2006 5:29 am
by mark.f
Yes. I measured it in English class, too.