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Old 03-24-2020, 12:00 PM   #46
Young Gun
 
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How does an extended cylinder perform against a full normal cylinder?
I know the more air volume and the more cylinder length the more beneficial for heavy bb's because of the jc.

How does the jc compare to each other?
Is it a noticeable amount and will it allow you to achieve jc more easy without all the hassle of weightening your piston (of course weightening will still be beneficial to achieve more jc).
I also suppose you can have jc with a longer barrels as usual?

Another question is how do spring ratings work with an extended cylinder? With the same barrel will it have the same fps as a normal full cylinder or will it be lower or higher?
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Old 03-24-2020, 02:31 PM   #47
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You do get more JC but to be honest I would not know how much more. I never measured it.
You may still have to weight your piston down.
I just use normal springs but maybe just a little bit more powerful. So 10 extra M
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Old 03-24-2020, 06:38 PM   #48
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So would it be worth getting a sr25 with the extended cylinder for a dmr or is the difference negitable with a normal v2 dmr? I already have a v2 DMR but wanna know if it's worth getting for the extra performance.
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Old 03-24-2020, 07:18 PM   #49
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It is really only worth it if you are aiming for above 500-550fps.
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Old 03-25-2020, 06:28 AM   #50
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The dmr limit is 450 fps at my place so it wouldn't be very beneficial then? Would a sniper be for the extra range? The limit for a sniper is 500 fps.
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Old 03-25-2020, 09:26 AM   #51
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DMR: Harder to upgrade well, has semi auto
Bolt Action: Easier to upgrade well, slightly more potential range, quieter, single shot.

I like the simpler mechanism if bolt action, but sometimes that semi auto is very helpful.
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Old 03-25-2020, 04:19 PM   #52
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Seems like i'll be sticking to a dmr and maybe try a sniper over time.
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Old 03-25-2020, 04:23 PM   #53
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Bolt actions can have a lot more weight added to the piston and so JC can be a lot more if done correctly. This will give you a good amount extra range.
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Old 03-25-2020, 04:40 PM   #54
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Maybe a fun project to start next year tuning a sniper rifle. But first i'm going to enjoy myself with my dmr with some tuning and shooting, if we can start playing again soon...
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Old 03-27-2020, 03:43 AM   #55
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@Plasmaburn, you are a fan of ICS. I am comparing CXP MARS vs PeIeador 2. I do not want EBB, so I will change the piston if I buy MARS. Likely, go for Peleader 2, coz it is half the price.
Knowing me, pro to seal ball bearings, I will likely want to drill the 6mm bushing hole to 8 or 9mm to put in a bearing (the Inner Diameter is 3mm, right? I see that most brands uses 8mm Outer Diameter ones and KWA is using 9mm. I prefer larger ones for better strength.) My question to you is, I assume that you done so, any tips for me? Any problems replacing bearings?
If the ROF is 20rps, then the sector gear spins at about 1200rpm, am I right? And the other 2 gears are spinning a lot faster than that, so really think it is better with bearings.
Why do you like ICS so much?
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Old Yesterday, 08:08 AM   #56
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@1tonne, can a decent AEG be really accurate (like 100ft upwards) with inner barrel length of just 138mm to 229mm? I see that DMR types are usually about 380mm to 460mm inner barrel length. Have you seen or done a DMR with inner barrel of about 300mm? Please advise.
Btw, I didn't see after market inner barrel for VSR10 that is less than 300mm. I am guessing that high power rifle should use at least 300mm inner barrel, am I correct to view it that way?
Thank you.
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Old Yesterday, 03:20 PM   #57
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The most kill I have ever got was somewhere between 80 to 120 kills without me being shot (I lost count and wish I had a camera). This was done with a DMR that had an inner barrel of 170mm and most shots were between 60-80 meters.
https://www.airsoftsniperforum.com/3...out-dying.html
From what I have found, barrel length will only effect accuracy if the barrel is too long. If it is short or over volumed, then accuracy should be good. The advantage with longer, normal length barrels over shorter barrels is that they have more time for the bb to accelerate meaning more fps with an easier piston pull back. Shorter barrels mean a bigger spring and more stress.
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Old Yesterday, 04:36 PM   #58
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Quote:
Originally Posted by 1tonne View Post
The most kill I have ever got was somewhere between 80 to 120 kills without me being shot (I lost count and wish I had a camera). This was done with a DMR that had an inner barrel of 170mm and most shots were between 60-80 meters.
https://www.airsoftsniperforum.com/3...out-dying.html
From what I have found, barrel length will only effect accuracy if the barrel is too long. If it is short or over volumed, then accuracy should be good. The advantage with longer, normal length barrels over shorter barrels is that they have more time for the bb to accelerate meaning more fps with an easier piston pull back. Shorter barrels mean a bigger spring and more stress.
1Tonne, I have an A&K SVD I'm going to try upgrading. Would a shorter inner barrel be better? I can probably modify the gun to fit, but I think the stock one is like 600 mm, which is far from ideal. What would be ideal? Do you know the cylinder volume on this gun?
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Old Yesterday, 08:04 PM   #59
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I think the A&K SVD has a V2.5 cylinder. So it is the longer one. This should help.
https://www.airsoftsniperforum.com/4...eight-aeg.html
My current V2.5 rifle has a 6.01mm with 410mm inner barrel and I use 0.48gm in it. With the 6.01mm there is a lot less waist air. I could possibly use up to 470mm but I would not go further than that.
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