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need some hopup help

This area is for the discussion of BB or airsoft sub machine guns, and or other small arms such as pellets.
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need some hopup help

Unread postAuthor: grock » Sat Mar 07, 2009 1:27 am

a lot of you guys have hopups in your bbmgs, particularly the airsoft ones. i'm (eventually) going to put one in mine, but what i'm wondering is are you guys putting in a hopup bucking (rubber sleeve part), the hopup adjuster (the T shaped part) or both? and what brands are you guys using, if not just pulling them off old guns? thanks.
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Unread postAuthor: PaulsAirsoftArmory » Sat Mar 07, 2009 11:34 am

You have to use both. The bucking is what actually gives the bb the spin used to improve accuracy. The "T shaped part" is actually called the hop up chamber and is used to apply an adjustable amount of pressure on the bucking for more or less spin. You can buy them new, but you can take them out of your old gun if you want.
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Unread postAuthor: Davidvaini » Sat Mar 07, 2009 12:01 pm

yeah you would have to use both.. there is the T-shape thing, that is the chamber, the rubber sleeve inside does two things, it provides a smooth surface for the spin and prevents the BB's from prematurely leaving the barrel.

There is a part inside the hopup chamber called the nub.. the chamber has an adjustment slider or gears that push the nub down at the bucking.. it makes the bucking then apply more pressure on the top of the BB therefore giving it spin.


For example
Image
In the above picture the gears are what adjust the hopup (more hop or less hop).. the more you adjust it for hop the more the nub presses down on the bucking and the more spin you get.

The part of the chamber sticking down (the base of the T) is the feeding tube, this is where the BB's get fed. The left side of the T is where the air or nozzle enters. The right side of the T is obviously the barrel.
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Unread postAuthor: grock » Sun Mar 08, 2009 9:50 pm

and you guys are still feeding the bbs into the barel from the back right? not having them come up from the bottom? (for vortex guns)
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