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Post by Puma1 on Jan 1, 2014 14:21:18 GMT -5
Hey there folks, just a quick question that I've been thinking about. I'd like to be able to switch between two different barrel lengths without entering the gearbox, meaning I need to find a cylinder that will work well with both setups. I currently have two hop up units and two barrel lengths, one at 363mm and the other at 455mm. I'm trying to maximize the ability of both while not having to swap out cylinders every time. I'm not sure if I should get one thats right in the middle or if I should get one rated for the 455mm barrel. If anyone has experience or thoughts on this I'd be eager to know them. Thanks guys: For the record, here's the setup:
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Post by Deacon on Jan 1, 2014 15:44:56 GMT -5
Go with a Non-Ported Cylinder. On the longer barrel you may notice a slight FPS increase. On the 363mm Performance should stay the same.
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ctres
New Member
Posts: 955
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Post by ctres on Jan 1, 2014 17:28:38 GMT -5
Correct cylinder to barrel volume ratios depend a lot on spring rate and bb mass and there is no clearly defined correct cylinder volume for any given barrel length. You can match your cylinder to barrel ratio so as to maximize your fps with .2s but since heavier bbs cause the air in the cylinder to compress more, your fps will not be optimized for heavier bbs. Ideally you would want to optimize your setup so as to get the maximum fps from the bbs that you intend to use, which are usually heavier than .2. Figuring out what that optimal cylinder size is would require you to start off with a full cylinder and then incrementally add a longer port with a dremel and keep chronoing every couple milimeters until you hit your max fps. That would be the point where the cylinder is perfectly balanced for your barrel length.
In your case, and from a practical standpoint I think that in most cases one should just use good judgement and avoid overvoluming if possible to eliminate turbulence due to the extra air. In your case a standard 3/4 M4 cylinder will probably be just fine for both barrels.
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Post by Puma1 on Jan 1, 2014 23:25:47 GMT -5
Alright. Thanks ctres. Deacon, what makes you say the type 0 is the best?
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Post by Deacon on Jan 1, 2014 23:59:03 GMT -5
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