Bangla_Black Posted April 11, 2007 Report Share Posted April 11, 2007 Is there anyway of making your gun stop shooting after the mag is empty?like what the PTWs do.. thanks Link to post Share on other sites
Stealthbomber Posted April 11, 2007 Report Share Posted April 11, 2007 Take your finger off the trigger. Ahem... It's possible to do in a variety of ways but it's difficult to do in such a way that it will work with ALL mags, including hicaps. Also, despite the way most guns look, there's very little room inside the receiver to fit something to detect an empty mag so you'll struggle to fit it. One of the reasons I'm looking forward to the F2000 is that there should be room inside the shell to fit this kind of thing without much effort. Link to post Share on other sites
NegativeCambre Posted April 11, 2007 Report Share Posted April 11, 2007 One of the reasons I'm looking forward to the F2000 is that there should be room inside the shell to fit this kind of thing without much effort. <{POST_SNAPBACK}> What 'kind of thing' do you speak of? Some sort of light beam to detect when no more bb's are coming through the feed tube or something? The PTW uses a follower that interupts the electrical circuit, correct? A cut-off feature would add a shedload of realism to these things-- Steve Link to post Share on other sites
Bangla_Black Posted April 11, 2007 Author Report Share Posted April 11, 2007 Beacause it is so diffficult to see if my mag is empty or not, as i use stealth BBs. Link to post Share on other sites
Stealthbomber Posted April 11, 2007 Report Share Posted April 11, 2007 Well, Ideally I'd want it to work with ALL magazines and that would require, somehow, checking that there's no more BBs getting into the hop-up. This is hard because the nozzle spends it's time moving around in this area which could confuse and sort of sensor in there. The other problem is that a "momentary" sensor would always stop the gun firing if it ever stopped seeing a BB, which it would because as the nozzle pushes it forward. The only way around this might be to fit a 2nd sensor which, basically, over-rides the first one except at a specific time in the firing cycle. So, for example, you'd have 1 sensor (fitted above the hop-up) which detects the presence of a BB at the top of the feed tube. You'd also have another sensor (microswitch maybe) built into the gearbox that detects when the tappet plate is in the backward position and is set to normally-closed. So, the tappet plate comes back, with the nozzle, and presses in the microswitch. That turns OFF the over-ride and allows sensor 1 to detect a BB. If there's a BB there the circuit remains closed and the motor continues to turn. The tappet plate moves forward and, even though sensor 1 now isn't registering a BB, the microswitch is now closed again so the circuit still remains closed and the cycle continues. The only time the gun stops firing is when 2 conditions occur at the same time:- 1) Sensor 1 detects no BB. 2) The microswitch is in the open state (when the nozzle is retracted) BOTH of these things would need to occur at the same for the gun to stop firing. It'd work but it's kind of clunky. The half-assed way of doing this would just be to modify the follower in the mag, fit a magnet and then fit a reed switch inside the top of the mag-well. When the magnet gets close to the reed-switch it'd stop the gun shooting. Course, this would need tuning to allow every BB to be fired. Alternatively, drilling a hole in the top of a mag and having some kind of pin poking into it to, again, detect when the follower reaches the top of the feed tube might work. Hicaps baffle any attempt at this sort of thing because they don't have any kind of follower behind the last BB, thus requiring a "proper" system to detect the lack of BBs in the hop. The other reason a sensor in the hop-up is the "proper" way to do it is because it'll make the gun stop firing if there's a jam in the mag and NOT just when the follower arrives at the top of the feed tube. Link to post Share on other sites
Bangla_Black Posted April 11, 2007 Author Report Share Posted April 11, 2007 WOW sounds impossible. but all the best! Link to post Share on other sites
aznsk8s87 Posted April 11, 2007 Report Share Posted April 11, 2007 You should be able to hear the difference when you fire... that's how I usually tell... Link to post Share on other sites
Bangla_Black Posted April 11, 2007 Author Report Share Posted April 11, 2007 That helps. but in the heat of battle, im way too excited to pay attention to the sound. Link to post Share on other sites
soap Posted April 11, 2007 Report Share Posted April 11, 2007 depending on what type of mags you use, with lows and mids you could load a few white bb's in the bottom so you can see when you finished the mag. just a thought. soap Link to post Share on other sites
aznsk8s87 Posted April 11, 2007 Report Share Posted April 11, 2007 =/ Sound, after sight, is probably your most important sense in airsoft. Then again, I guess some people get more severe adrenaline rushes than others... Link to post Share on other sites
Bangla_Black Posted April 11, 2007 Author Report Share Posted April 11, 2007 depending on what type of mags you use, with lows and mids you could load a few white bb's in the bottom so you can see when you finished the mag. just a thought. soap <{POST_SNAPBACK}> omg.. that sounds like a great idea. i'll try it out. thanks! Link to post Share on other sites
TerranCmdr Posted April 12, 2007 Report Share Posted April 12, 2007 If you can't see if you're shooting BBs or not, how do you know if you're even hitting anything? Link to post Share on other sites
Miker Posted April 12, 2007 Report Share Posted April 12, 2007 Buy a Systema... Other than that I have no clue... Link to post Share on other sites
amateurstuntman Posted April 12, 2007 Report Share Posted April 12, 2007 I (like Soap) either put a few white or tracer bbs in the bottom of my mags and it works really well. Link to post Share on other sites
Phatvortex Posted April 12, 2007 Report Share Posted April 12, 2007 On the subject of sensors- why not just an IR beam break detector in the feed tube? If positioned at the top, it could potentially mean the gun stops firing when there is still a BB in the chamber, but that shouldn't be a major problem. Link to post Share on other sites
crablegs Posted April 13, 2007 Report Share Posted April 13, 2007 Yes but there is always a few bbs left in the tube. Link to post Share on other sites
happyboy Posted April 13, 2007 Report Share Posted April 13, 2007 Take your finger off the trigger. Ahem... It's possible to do in a variety of ways but it's difficult to do in such a way that it will work with ALL mags, including hicaps. Also, despite the way most guns look, there's very little room inside the receiver to fit something to detect an empty mag so you'll struggle to fit it. One of the reasons I'm looking forward to the F2000 is that there should be room inside the shell to fit this kind of thing without much effort. <{POST_SNAPBACK}> When is the F2000 coming out, and who will build it? I know, I could search for it. But if it really could fit something like that, this topic could be to discuss adding the bb dry-fire stopper to different guns. Link to post Share on other sites
The Taurus Posted April 13, 2007 Report Share Posted April 13, 2007 If you can't see if you're shooting BBs or not, how do you know if you're even hitting anything? <{POST_SNAPBACK}> The Screams Anyway I think one of the above systems could be built in a custom hop-up... This would mean that not much extra space would be needed inside the gun which would be perfect! Link to post Share on other sites
aznsk8s87 Posted April 13, 2007 Report Share Posted April 13, 2007 IIRC it was JLS that was making it. It's a china based company, and its SCAR wasn't all that great, internally or externally. Link to post Share on other sites
The Taurus Posted April 13, 2007 Report Share Posted April 13, 2007 IIRC it was JLS that was making it. It's a china based company, and its SCAR wasn't all that great, internally or externally. <{POST_SNAPBACK}> What exactly were/are they making? The F2000 maybe? Link to post Share on other sites
crablegs Posted April 13, 2007 Report Share Posted April 13, 2007 When is the F2000 coming out, and who will build it? I know, I could search for it. But if it really could fit something like that, this topic could be to discuss adding the bb dry-fire stopper to different guns. <{POST_SNAPBACK}> Link to post Share on other sites
aznsk8s87 Posted April 13, 2007 Report Share Posted April 13, 2007 Crablegs got it. sorry i didn't make myself clear. Link to post Share on other sites
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