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Quite combustion

A place to ask general spud cannon related questions.
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How far do you think this will shoot

50-200 yards
3
60%
200-300 yards
2
40%
300-400 yards
0
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Total votes : 5
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Quite combustion

Unread postAuthor: SpudStuff » Wed May 31, 2006 6:46 pm

Alright so this will be my third combustion. all of my others have been way too loud and the neighbors think im shooting a 12 guage shotgun.
The chamber is 4 inch Pvc and 8 nches long the barrel is 30 inches long and 2.5 inch pvc for tennis balls. i need this to bee extremly quite. like a .177 calibre long rifle. i am using metered propane and a copy of the HiS that boogieman used on his hybrid. if you have any suggedtions i would greatly appreciate it. i have no trouble getting specialty parts to make a silencer if i have to.
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Unread postAuthor: Benny » Wed May 31, 2006 7:18 pm

it will be still very loud.
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Unread postAuthor: SpudStuff » Wed May 31, 2006 7:26 pm

that isn't very helpful
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Unread postAuthor: Benny » Wed May 31, 2006 7:31 pm

i was just telling you, jeez.
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Unread postAuthor: SpudStuff » Wed May 31, 2006 7:33 pm

another totally useless post
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Unread postAuthor: saladtossser » Wed May 31, 2006 9:11 pm

quite combustion is as an oxymoron as long white or honest liar or death penalty for attempted suicide

you have to vent all of the combustion gases SLOWLY AND BEFORE the projectile clears the barrel, which sacrafices power
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Unread postAuthor: SpudStuff » Wed May 31, 2006 9:39 pm

i dont need much power. i just need it to be able to shoot a tennis ball 100 yards
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Unread postAuthor: Shrimphead » Wed May 31, 2006 11:33 pm

Make sure you have a low, c/b ratio, like 1:.5 or .6.
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Unread postAuthor: rna_duelers » Thu Jun 01, 2006 12:46 am

Pneumatic,alot quieter and shoots further.
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Unread postAuthor: Benny » Thu Jun 01, 2006 12:55 am

be careful rna, he will flame you like he done to me. :x
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Unread postAuthor: sgort87 » Thu Jun 01, 2006 8:42 am

Shrimphead wrote:Make sure you have a low, c/b ratio, like 1:.5 or .6.
I thnk you mean .6:1 or .5:1. And yes, the smaller the ratio, the quieter it will be.

If you want a quiet gun then some power will be sacrificed but not so much if you use somewhere around.8:1 and .6:1. That will actually give you the most power and should be relatively quiet. Sound is wasted energy.
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Unread postAuthor: taterjim » Thu Jun 01, 2006 10:00 pm

I have a long and short tennis ball barrell ,a 5' and a 2' , they will fit on more than one cannon I have ,one of them only slightly larger in capacity than the 4" by 8" chamber you mentioned is loud ,very loud with the short or long barrel. The quietest barrels I have are the 1 1/2" by 60" for spuds ,and seems to be very efficient if you want distance. Two of my c annons have pvc handles in front of the chamber with momentary push buttons installed to actuate the stun gun ,,I have 4 barrels that fit either one of them. This is my favorite design so far.
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Unread postAuthor: SpudStuff » Thu Jun 01, 2006 10:30 pm

please help me then
if i keep my chamber at 8 inches
how long should the barrel be
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Unread postAuthor: sgort87 » Fri Jun 02, 2006 12:38 am

Well the sizes you have now are just about right. If anything, you could add a few inches to the barrel but it should be fairly quiet as it is.
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