golf ball barrels

Potatoes last one shot, so build reusable! Discuss ammo designs and ideas. Tough to find cannon part or questions? Ask here!
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Deko
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Fri Jan 05, 2007 10:49 pm

i have two questions about sdr-21 pipe:

1. my dad works at a hardware store and isnt sure what sdr-21 is but they have thinwall pvc is it the same thing?

2.and somethings that doesnt really matter, what does sdr stand for?

if thinwall isnt the same thing im probally just going to buy some online
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benstern
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Fri Jan 05, 2007 11:18 pm

no it's not the same.
you can buy golf ball barrels from may spudgunners and their stores.
pimpmann22 (vivi)
bcpneumatics (bcarms)
sgort (launchpotatoes)

You can also get them locally from pipe shops and irrigation supply shops
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Deko
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Sat Jan 06, 2007 12:38 am

ok thanks benstern, do you think lowes should have em? its a good drive and i havent got a chance to go check it out
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frankrede
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Sat Jan 06, 2007 12:54 am

most lowes I have been to dont have the sdr variety pipe.
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ProfessorAmadeus
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Sat Jan 06, 2007 1:11 am

They have sdr but only to 1 1/4 inch
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squeaks
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Sat Jan 06, 2007 1:45 am

it's also refered to as something 200, I can't remember what it is. You might want to google sdr 21 and see what it also is referred to. I went to our local plumbing store and he said he didn't have sdr 21 but that he had this 200 stuff which is exactly the same.
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sgehring
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Sat Jan 06, 2007 2:49 am

If you have access to a table saw use it to mod some 2" sch40. It explains it in the wiki. I have used both the sdr21 inside 2" sch80 and the 2" sch 40 inside 2" sch 40 and the only difference I have found is that the ball is a little tighter in the 2" sch 40 thats been modded.
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MrCrowley
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Sat Jan 06, 2007 4:34 am

yeah but its not as good looking and is harder to get perfect.
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mark.f
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Sat Jan 06, 2007 8:42 am

benstern wrote: no it's not the same.
Where I live, it is. Only way I could get a stick of 1-1/2" SDR-21 from the hardware store was looking for a chunk of 1-1/2" drain pipe for an unrelated project. No sense in using SCH-40 for drain! It was about $0.55 a foot.
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Deko
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Sat Jan 06, 2007 6:05 pm

ok thanks guys im probally just going to take a golfball to the store and see if it fits if it doesnt then ill buy online
squeaks
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Sat Jan 06, 2007 8:13 pm

Oh yeah, I just remembered what it's also called. Class 200 pipe. It's the exact same thing as sdr 21, just a different name. Just ask the guys at your local plumbing store(not to be confused with something like home depot or Lowes) for sdr 21 or class 200. Also ask if they can order it if they don't have some.
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Deko
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Sat Jan 06, 2007 9:51 pm

ok thanks squeaks ill see if my dad knows what that is
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PVCMAN
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Tue Jan 23, 2007 8:57 pm

Do they sell reducers from 4"schedual 40 to the 1 1/2" sdr 21 inside the 2" schedual 80?
squeaks
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Wed Jan 24, 2007 9:24 am

just get a 4" to 2" bushing. The schedule 40 fittings will go on any other thickness of pipe because they all have the same OD.
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Legendpilot
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Wed Jan 31, 2007 2:44 pm

Made one just the other day, it was a bit of a chore cramming one pipe into the other.

Originally slated to be 48" long, the pressure rated s40 PVC shattered at one point so I was forced down to a 32" barrel. All in all, I think it came out fairly decent, with the proverbial 'gap' being very minimal. I also used small pieces from the strip I cut out and glued them inside at the breech end as a ball stop. I have yet to use it, but I'm sure it'll be pleasing. I'll let you know. -Lp
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Minimal seam
Minimal seam
Seems just right.
Seems just right.
Not a bad fit!
Not a bad fit!
Last edited by Legendpilot on Wed Jan 31, 2007 3:58 pm, edited 1 time in total.
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