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Would it be worth it?

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Would it be worth it?

Yeah, go for it.
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Nah, keep it the way it is.
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Total votes : 4
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Would it be worth it?

Unread postAuthor: iPaintball » Fri Jun 06, 2008 8:18 pm

Ok, I am currently using a 3/4" QEV on my marble rifle. My question is this: Would it be worth it to dismantle my marble rifle to create a larger bore cannon? I have a 10' section of 1.5" SDR 21 and if i do make a new cannon, it will most likely be a golfball cannon. I dont have much experience with QEVs, so I don't want to end up ripping apart my old cannon to build a weaker, more expensive one. Any thoughts/tips will be greatly appreciated.

Peace,
iPaintball
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Unread postAuthor: socoj2 » Fri Jun 06, 2008 8:37 pm

3/4 Qev would have a hard time driving 10 feet of 1.5" pipe. Get one of the ASCO 1.5" valves
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Unread postAuthor: potatoflinger » Fri Jun 06, 2008 9:03 pm

I think it would be worth it, I have a 3/4" QEV on my tennis ball cannon (2.5" x 45" barrel, and a 1.25" x 10' barrel) and it has decent performance, so you shouldn't have any issues with a 1.5" barrel.
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Unread postAuthor: hi » Fri Jun 06, 2008 9:58 pm

with a 10 foot barrel it would most defiantly not be worth it. a QEV is great for getting a rush of air for a relatively short barrel, but with the port being roughly half the size of the intended barrel, i think you would be disappointed.

at 10 feet a simple ball valve would probably give the same results.

if you are going to ignore me and proceed anyway, at least use two of them to make it slightly better.

it would also work better if you had a 3/4'' barrel.
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Unread postAuthor: iPaintball » Fri Jun 06, 2008 10:08 pm

Haha, I probably should've mentioned that I am not planning on using the whole thing. The barrel will most likely be in the area of 4'. Thanks for the feedback guys.
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Unread postAuthor: LikimysCrotchus5 » Fri Jun 06, 2008 10:09 pm

So is this what you would use the 1.5 inch QEV for?
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Unread postAuthor: iPaintball » Fri Jun 06, 2008 10:12 pm

It's a 3/4" QEV...
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Unread postAuthor: LikimysCrotchus5 » Fri Jun 06, 2008 10:32 pm

LikimysCrotchus5 wrote:So is this what you would use the 1.5 inch QEV for?


I said this because you were interested in the 1.5 QEV im selling so thats why i was asking the question above.
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Unread postAuthor: psycix » Sat Jun 07, 2008 5:19 am

I recommend building a 2 or 3 (maybe 2,5) inch piston valve with 1,5" porting, use the QEV as a pilot.
That will grant you the most power.
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Unread postAuthor: iPaintball » Sat Jun 07, 2008 8:22 am

Well i can easily build a 1.5" porting piston valve, but isn't a 3/4" QEV a little overkill as a pilot valve? I was thinking about building a separate gun using a 1/4" QEV as a pilot.

@LikimysCrotchus5: Haha sorry man, i forgot you were the one who was selling it... :oops:
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Unread postAuthor: D_Hall » Sat Jun 07, 2008 2:59 pm

It's not like 3/4" QEVs are horribly expensive. Just buy another and have both guns.
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Unread postAuthor: psycix » Sun Jun 08, 2008 5:21 am

A 3/4" QEV is just a very good pilot for your piston valve. Note that the piston diameter should be 2" or more.
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Unread postAuthor: jonnyboy » Fri Jun 13, 2008 12:49 pm

iPaintball wrote:Well i can easily build a 1.5" porting piston valve, but isn't a 3/4" QEV a little overkill as a pilot valve? I was thinking about building a separate gun using a 1/4" QEV as a pilot.

@LikimysCrotchus5: Haha sorry man, i forgot you were the one who was selling it... :oops:


Me thinks their is no such thing as "overkill" in the world of spuds.
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Unread postAuthor: MaxuS the 2nd » Fri Jun 13, 2008 1:11 pm

jonnyboy wrote:Me thinks their is no such thing as "overkill" in the world of spuds.


You're wrong.

http://www.spudfiles.com/forums/overkill-t6653.html
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