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Everything posted by Adolf Hamster
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SCAMMER strikes again.... STEVE GLENNIE
Adolf Hamster replied to Jack91's topic in General Discussion
i'd suspect if there's negative feedback on the account he's probably gonna switch it up regardless. i mean he's experienced enough in this scamming malarkey. -
Ball bag LMG Box Mags - How do you improve their feed?
Adolf Hamster replied to Groot's topic in General Help
Iirc thats the same mechanism as i had retrofitted to the '42 to replace the awful agm trommel mag. From memory the spring for the winding portion on mine snapped at the end where it interfaced with the winding wheel meaning no tension on the bb stack, might be worth checking out. Another thing to look for is the length of the bowden tube, dont want excess that means extra friction and potential for tight bends. -
Good rule of thumb is try to avoid charging more than 1c. Take the capacity of the battery eg: 1600mah, divide by 1000 gives you 1c or 1.6 amps. If in doubt slower is the safer option to go for, given the usage of airsoft there shouldnt be any need to go fast just charge up before game day and if you run out mid-day then buy more batteries.
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What weight ammo are you using? Because the "350 fps" limit sites advertised is actually "350fps using 0.2g" so if your using anything heavier the raw fps number will be lower even if the kinetic energy in joules (the number that matters) is the same. The fps being lower due to heavier ammo isn't a disadvantage, in fact contrary to what you might think the slower heavier round actually goes further thanks to the magic of the magnus effect (aka hop). As others have said, being a bit under the limit (that is joules, not raw fps) isnt so bad, although assuming you're using 0.2g ammo then it sounds like you're a bit under. One thing to look for next time you chrono is the consistency in the fps, eg if its shooting 310 is every shot 310 or is there variation (eg 310 +/- 20fps), as a big variation is gonna be a sign of poor air seal (which results in shit accuracy)
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Recommendations - £600 Budget for AEG
Adolf Hamster replied to Kieronwf's topic in Guns, Gear & Loadouts
You can have performance, reliability and economy but you can only pick 2..... -
Macks airsoft dreamers of the week thread
Adolf Hamster replied to Mack's topic in General Discussion
we all gotta goof sometimes -
it's generally best to leave a gun alone especially if it's your first/only pew. whilst a lot of ootb pews have less than perfect shimming, they're generally good enough for purpose. the risk is opening up the gun first time is fraught with the potential for making mistakes on reassembly and messing something up. whilst that's just part of the learning process i can say from experience (having not listened when being told this back in the day) that the walk of shame gets real old the tenth time you've done it when your latest build/experiment hasn't gone to plan and left you with a pew that's either performing terribly or straight up not working at all.
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Macks airsoft dreamers of the week thread
Adolf Hamster replied to Mack's topic in General Discussion
damn, i swear part of me thought it was a trap..... -
gears and piston are pretty standard, hop unit for sure is a proprietary item although afaik there are aftermarket options. mostly it's one of those guns best left unmolested as the ootb performance is pretty damn good.
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yeah the internals themselves are standard enough
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Macks airsoft dreamers of the week thread
Adolf Hamster replied to Mack's topic in General Discussion
the tanks have an expiry period, given the pressure they're under you can't use them infinitely before fatigue makes them a safety hazard. for larger tanks (eg dive tanks) or the more expensive composite tanks you can get them re-tested, but for the cheap tanks most players use it's as cheap to bin it and get a new tank when the test period is up. -
Macks airsoft dreamers of the week thread
Adolf Hamster replied to Mack's topic in General Discussion
interesting to see what courier he's gonna post with, i'd imagine not many will want to take hpa tanks....... -
White buildup in barrel after only 400 rounds
Adolf Hamster replied to steverebo's topic in Electric Guns
hmm, iirc those do have a coil tube for feeding the ammo up, which can be abrasive to ammo. although decent ammo shouldn't be that badly affected, plenty of them mags in service. brasso? yeah that might do it, leaving that residue stuff. ipa might not be the right stuff to clean it either. might be worth giving it a real good buffing with a dry patch. -
those contacts look pretty damn clean, although the build up that counts is between them (ie not visible in the shot). also worth checking that the contacts are actually touching properly when the trolley is forwards, could be they've been bent wider by whoever previously gave them a scraping and now they ain't touching.
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White buildup in barrel after only 400 rounds
Adolf Hamster replied to steverebo's topic in Electric Guns
yeah it's a long shot wrt the burrs, as you say should affect accuracy all the time. nothing like dirt from magazines? what hop rubber ye running? -
you mean the metallic portion? could just be the plating has worn off. what you're looking for is black carbon/sooty buildup, or damage to the contacts, usually it's one of the outer contacts that goes (depending which is wired to +ve/-ve) a gentle rubbing with a fine sandpaper will clean off any residue.
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White buildup in barrel after only 400 rounds
Adolf Hamster replied to steverebo's topic in Electric Guns
wonder if there's something in the hop/nozzle/barrel window that's scratching the ammo. other option is maybe it's a bad batch of ammo, with excessive dust. whilst the tighter bore stuff is more sensitive to needing cleaned more regularly it's not that sensitive and one of those zci's should be able to handle a day's worth of pewing (~2k rounds) before really having issues. -
as @EDcase says worth seeing if you can rig up direct to the motor just to check the motor itself isn't dead, might as well eliminate all options before popping the box open. make sure and keep a good hold of it (eg bench vice or some way to hold it solid) else it'll try and jump away on ye. if you have to open the box then a couple of tips: -use a screwdriver/similar pokey tool through the bolt hole above where the wires come out, that's the spring guide and holding it down (alongside fingers on the cylinder- the blue bit) will stop the worst of the sproinging when you split the gearbox halves. -try and keep a good track on where the shims on the gears are, if you can make sure they don't go walkies (which they will absolutely try to do) it'll make re-assembly so much easier not having to re-shim it. -when re-assembling, take care and don't force anything, use a pokey tool to make sure things like the axles on the gears line up with the bearings and if everything's properly in place it'll go together easy. if you have some decent magnets then they're great for holding the anti reversal latch in position for you.
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it's pretty typical to find airsoft and RC versions of tamiya connectors to have reversed polarity. haven't a bloody clue why airsoft manufacturers refused to follow the established precedent but that's what they've done. if you have the polarity reversed then the motor will try to start backwards, which on the majority of aeg gearboxes is going to mean driving straight into the anti reversal latch. you'll typically hear a "click" from the motor when this happens. that in itself won't damage anything (that's what the arl is for) as long as you don't go holding the trigger down and dumping current through the motor. that won't stop the motor running when outside the gun though, it'll just run backwards. assuming everything is going ok on the external connections, the next potential culprit especially for a gun with some rounds through it is the trigger contacts themselves being carboned up/burnt out. the fix for this is going to involve splitting the box to clean/replace them (depending on what the issue actually is).
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see that symptom is just screaming the bb clipping something, usually with a hop misalignment it'll go straight before curving off (like you were tilting the rifle constantly to one side) it could also be a bit of dirt/damage at the end of the inner barrel, although the fact you've wholesale changed the barrel kinda discounts that notion (although worth checking regardless) yeah, it's unlikely and doesn't sound like it fits the symptoms as per above, but i've had enough of them sneaky buggers misalign for no intelligible reason to not discount it as a possibility.
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hmm, maybe the flash hider itself? the way you're describing it sounds like you already know and have checked for the usual suspects but just for the sake of completeness the only thing you haven't mentioned specifically is checking the hop mound is centered in the barrel, and it's worth doing that over a range of hop settings as it can look fine on minimal hop only to deform when turned up further.
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first suspect i'd be looking towards is the bb's clipping something on the way out, typically a suppressor but can be a bit of damage in the inner barrel (although in this case unlikely given you've swapped that out already) it's not sounding like the typical jack issue which is inconsistent velocity/vertical spread.
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good analogy, boxers expecting to get hit but anything below the belt gets cried fowl, likewise you're not allowed to keep beating the crap out of someone when they go down. always a contentious issue, i don't particularly mind if a player chooses to opt for a single round somewhere it won't sting too much over a bang kill given how often it descends to drama.