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Old 12-19-2012, 08:32 AM   #1
Bowman   Bowman is offline
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R-Hops

Hello everybody!

This issue is hunting me like hell. R-HOPS... People say this kind of hop are something from heaven, but in matter of fact, I never saw a single proof that this hop up is better than a good one, from a regular type.

I have scavenged every single youtube video and reports Airsoft Mechanist (and other sources), but there are much problems I have encountered on people reports about the performance of this hop ups. From poor comparison between hop up systems, to the lack of experience of the reviewers with decent "normal" hop ups...


I truly believe that a DECENT regular Hop up is as good as a DECENT installed R-Hop.

Physics tell me the same.

As anyone of you use one of this R-hops???

PS: in my country (Portugal) we are allowed to have a maximum of 374 fps with 0,2 gr BB (1,3 joules). Some people uses 450 to 500 fps (measured with 0,2 gr BB's). I donīt want comparison with the absurd power of 550 fps and even more...
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Old 12-19-2012, 08:46 AM   #2
Vadim   Vadim is offline
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I use r-hops and they are awesome.

I mean some people have set ups that don't use them and they still get really nice range and accuracy. But for range most of those set ups are running 500+ fps.

I have r-hops in all my guns and they increase range give better consistency.

One of my sniper rifles has a stock spring in it (400-430) FPS and it shot ok with .30's out to 180ish feet.

But after I put in an r-hop, I was able to put .40's a bit past 200 feet. I would never be able to do that (shooting .40's with a 400 fps spring) with just a stock/upgraded bucking without doing other mods and upgrades to the gun.

Another thing, with the r-hop, my right hook shots were all gone and it shoots great now.
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Old 12-19-2012, 11:40 AM   #3
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compare em your self then, comeback and say that your standard hop-up performs just as well as the R-hop, I am sure you will have an attentive audience.
I think the really big thing an R-hop does is let you use much heavier weight ammo for a given velocity, with all the physics advantages that entails.
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Old 12-19-2012, 12:40 PM   #4
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To quote myself from another thread about the ER-hop.

Quote:
Originally Posted by Masterjuggler98 View Post
I just want to clear up the physics of the r-hop. It doesn't give any more backspin than a normal bucking would give. If it did give more backspin, the bbs would be sent sky high. What it does is apply the backspin at a slower rate. With a normal bucking the backspin is applied all at once which causes the bb to vibrate in the air, making it unstable. Basically it makes the center of rotation for the backspin unaligned with the center of mass for the bb. When the backspin is applied more slowly, it makes the bb more stable, and able to maintain the backspin for a longer amount of time. This is why the ER-hop is better than a normal R-hop. It is able to give backspin at a slower rate than the r-hop, and at a much slower rate than a bucking with the conventional rubber mound.
That's the concept behind the r-hop. The lower fps will not affect performance. If anything it will actually make the bb more stable. I think there was a thread some time ago on the "optimal fps" which is around 300-350 fps, where the bb is most stable. You will see the most improvement for the lesser quality bbs because it makes them more stable, but it should improve the stability of any bb.

I'm sorry I don't have any real scientific comparisons, but I can tell you that it gave me an improvement over my nineball bucking in my bar10. With the bucking I was able to get a bit under 250ft usable range, now I get roughly 280-ish. If I spent more time tuning it, I'm sure I could get it to go much farther.
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Old 12-19-2012, 12:56 PM   #5
Vadim   Vadim is offline
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Smile

Quote:
Originally Posted by Masterjuggler98 View Post
To quote myself from another thread about the ER-hop.



That's the concept behind the r-hop. The lower fps will not affect performance. If anything it will actually make the bb more stable. I think there was a thread some time ago on the "optimal fps" which is around 300-350 fps, where the bb is most stable. You will see the most improvement for the lesser quality bbs because it makes them more stable, but it should improve the stability of any bb.

I'm sorry I don't have any real scientific comparisons, but I can tell you that it gave me an improvement over my nineball bucking in my bar10. With the bucking I was able to get a bit under 250ft usable range, now I get roughly 280-ish. If I spent more time tuning it, I'm sure I could get it to go much farther.

Thanks for clearing that up, I posted saying something about more backspin on another thread thinking that's what it did but guess I was wrong.
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Old 12-19-2012, 02:43 PM   #6
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I want to try it, and compare with normal good hop ups. with that justification, it seams reasonably that it could work. But I am a septic type of guy. I must experiment it.

Anyone knows about a guide on how to do one ER-hop? I live in Portugal, its very hard to ship one from the US.
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Old 12-19-2012, 03:21 PM   #7
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HS5 ships internationally, and as for how to do it reezo posted a video of how to make one on this forum.
https://www.airsoftsniperforum.com/showthread.php?t=5079

only difference between an R-hop, and an ER-hop is length. you also need to modify your hop window for an ER-hop.

last thing, you might want to change septic to skeptic, two very, very different words...
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Old 12-19-2012, 03:38 PM   #8
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Lol, typo!!!
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Old 12-23-2012, 02:54 AM   #9
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where we can find those r hop up?
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Old 12-23-2012, 04:11 AM   #10
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I tried installing the R-Hop. I was...semi successful. My range and trajectory was great and very flat, but I think an uneven filing job on my part gave me lateral inconsistency. I think a properly installed H-Hop is the way to go, but getting it perfect isn't the easiest thing. Range distance to me was noticeable.
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Old 12-23-2012, 12:21 PM   #11
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http://www.air-lab.co.uk/products/z-kit.html
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Old 12-23-2012, 01:35 PM   #12
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Just buy them directly from Hunterseeker!
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Old 12-23-2012, 01:51 PM   #13
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I highly suggest you don't get the z-kit. It's better to just get the experience of sizing it yourself. Plus if, for example, the middle one fits your hop window but something happens to it, you will need to cut the large one down anyway. Then what do you do if something happens to that? The small one might be too small to fit.

Get the regular package of the ir-hops. The r-hop will work too but if you ever play in the cold (I do sometimes) it is possible that it can warp slightly. Cheese man had this problem before when he installed regular r-hops. Because he lives in Alaska, and he tuned the r-hop for the cold weather, when it got to the buyer in a warm climate the performance of the r-hop changed. Now he only installs ir-hops because they are thermally stable.

You can buy the r-hop from Hunterseeker on his site: https://sites.google.com/site/hsarmo...s-and-services
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Old 12-26-2012, 01:46 AM   #14
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I want to drop an R hop into a kjw M40 A5 with a vsr hopup conversion kit. Is there any extensive modifications that need to be done?
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Old 12-26-2012, 07:20 AM   #15
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the only modification that needs to be done to the gun itself is by replacing the nub on the hopup arm with a soft nub, to apply even pressure to the bb. There was a thread or two completely about this topic not too long ago, so I won't go into specifics.

Eventually I'll probably go through the forum and try to find all the r-hop threads I can, then link them in a single post. At this point we need a database for it LOL.
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