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The J-Hop Testing Thread

24595 Views 47 Replies 17 Participants Last post by  arcticd
Before even reading this post, i suggest you take a look at this thread first and read through all the pages so you understand what the J-hop is and the many possibilities available.

http://www.airsoftsociety.com/forums/f10/j-hop-34376/

Unfortunately, the thread on airsoft society has seemed to dwindle off a bit, and i haven't found much more testing done on this. If your going to take a stab at this mod, please share your results with everyone here so we can learn from each others mistakes and find a good solution. Once we find something that works, this will be a much easier method to making R/ER-hops or any type of hop for that matter.
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@Solaris- If you have packing tape or teflon tape those would probably work best. Try the packing tape first because it seems less likely to get tangled.
I tried it using some clear silicone 1 caulk with a plastic rod as the filler. The rod was originally an unjamming rod from my well mb10 but I have since cut it up to use for other things. I wrapped packing tape around it to get it to the right diameter. I just piled the silicone up and sanded it smooth once it dried because smoothing the uncured sticky stuff is pretty hard. I took the rod out a little while ago and found the silicone mushroomed inside the barrel because it got into the small crack in between the rod and the inside of the barrel. Took me a while to clean it out. Seems I'm also back to experimenting.

There is something called oogoo which is just corn starch mixed with silicone 1 caulk. Some guy posted how to make it on instructables and all the uses. It is basically a really fast drying silicone caulk. The moisture in the corn starch activated the silicone from the inside out, instead pf waiting for the moisture to seep in from the outside which can take a while. I'm going to experiment with it to see if it can fix the problem of it being too sticky like what Vindi found out.
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Ditto to what Ranger said. Anyway, Builder, do you mean you put the cut straw between the bucking and the barrel to make the outside surface of the j-hop smooth? Another way you could do it is by leaving the outside uneven and just glop it on, take a razor blade and chop it down when dry, then sand it smooth. You way is probably easier though lol. My problem is I always get air bubbles on the inside the barrel side so the contact area isn't perfectly smooth. I'll try thinning it with mineral spirits if I ever get around to it.
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If you go the oogoo route (cornstarch mixed with silicone caulk to make it dry in minutes) you will need silicone type 1. The type 1 silicone absorbs moisture to cure, and since cornstarch holds moisture very well, it cures the caulk in minutes (depending on how much was mixed.

Type 2 silicone caulk however expels moisture to cure, so adding more moisture from the cornstarch wouldn't get you anywhere.

Google "oogoo" and find the instructables page on it by mikey77. read through it and see how it works. You could always just use straight caulk but it takes forever to cure.
You can find the caulk at any hardware store. I even saw it at walmart. t doesn't matter what brand as long as it is labeled silicone "1". I found the really cheap stuff at homedepot that was only a few bucks and it works fine for me for making oogoo. Like I said though, you don't need to use oogoo, you can use straight caulk. You'll just have to wait a while for it to dry. Again, google "oogoo" and read through the instructable by mikey77. It will tell you all you need to know about oogoo.
I could be wrong but I think the corn starch used to make oogoo would make the caulk stronger, or at least more ridgid.
But then you are paying $10-15 for one or two patches, which is even less cost efficient than buying the r-hop, and WAY less cost efficient than having shifty give you a few inches of the r-hop tubing.
@Rubiks- Daddy was suggesting that we cut up bucking into r-hop patches. I'm saying just buying r-hop material instead of cutting up bucking is more cost effective.

Using up old ones is a different story. If you've got a bunch of old buckings with the mounds worn out, then cut away. You win lol.
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Shifty has a thread in the for sale section selling ir-hop tubing for pretty cheap compared to HS5's stuff. Of course all the credit for the ir-hop goes to HS5 (minus the g-hop inspiration), Shifty's stuff is just cheaper.
Actually, The Builder found that liquid e-tape is a great j-hop material. I am going to try using it soon, as I have one of those arrow shafts coming in so I can make a barrel out of it.
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