Tech Advice Needed - Overspin and Inconsistent, Low FPS

[Adolf Hamster]

Could I trim the lips? Say with small scissors or a razor blade?

you can try, but i'm afraid the odds of not resulting in a leak that defeats the purpose of changing are not good

 

[Ragingrental]

Is it possible that I have QC issues with the hop up chamber and could maybe replace that instead?

 

[Adolf Hamster]

Is it possible that I have QC issues with the hop up chamber and could maybe replace that instead?

might not even be QC, might just be the specna cut for the barrels is slightly different to the cut for PDI barrels.

maybe worth chucking the original barrel back in see if that's the case.

 

[Ragingrental]

The same thing happens with the stock barrel. I can see the bucking lips protruding and it takes a lot of effort to push the BB through.

 

[Adolf Hamster]

The same thing happens with the stock barrel. I can see the bucking lips protruding and it takes a lot of effort to push the BB through.

hmmm.

normally they do protrude a little, like ~0.5mm ish but you're saying it sounds like much more than that.

can't recall if i've mentioned it before but if not it's worth checking the mag/ammo, a weak mag or some ammo brands can cause the stack to bind up causing jams that a better brand of ammo/mag would solve.

that's mainly if you're using mid caps, hicaps tend to not be quite so susceptable as they're single stack and much shorter column.

 

[Ragingrental]

The BB's get stuck in bucking lips. The gun works if I don't seat the barrel fully backwards so the lips don't protrude into the hop chamber.

 

[Adolf Hamster]

The BB's get stuck in bucking lips. The gun works if I don't seat the barrel fully backwards so the lips don't protrude into the hop chamber.

hmm, whilst i'm normally hesitant to suggest messing with things like hop chambers if it's unneeded, but i can't help but wonder what a ZCI rotary would be doing in that position?

 

[Ragingrental]

hmm, whilst i'm normally hesitant to suggest messing with things like hop chambers if it's unneeded, but i can't help but wonder what a ZCI rotary would be doing in that position?

The black, plastic one? If so I've heard about them and I don't think it'd be awful but it's a bit cheap haha. But I guess I may simply been a victim to marketing tricks. Either way, if you do mean the black plastic one then I wouldn't hesitate to pick it up as it's £8.

 

[Skara]

Specna chambers are ZCIs.

 

[Adolf Hamster]

Specna chambers are ZCIs.

Ahh, well that answers that question then.

At the risk of going in circles is it intermittently feeding on any mode or is it happening (/happening worse) in auto?

Might be a speed/delay issue?

 

[Ragingrental]

So maybe it could be a QC issue? I've recently asked on other platforms and heard  from people that they have used maple leaf rubbers with the specna arms stock hop unit without issues. Although I do think they might be making things up or that they maybe aren't people that aren't very  trustworthy or someone to be taking advice from.

As for the first question the bb's don't even leave  the  barrel at all. I can fire a burst in auto and it won't fire, or I can spam the trigger in semi and it won't fire.  There isn't any difference between the two.

I don't know what speed/delay issue might mean.

 

[Tactical Pith Helmet]

Oddly enough, I only had bad experiences with G&G greens. Bad air seal, couldn't lift 0.25s, bad consistency (bbs were flying left and right, everywhere but where I was aiming at).

I've been chasing an accuracy issue for a while in a rifle with a G&G green fitted.  I might try a swap reading this comment.  It lifts .28s and .3 fine and seals well, but still worth a try.   It's been a frustrating issue!  

 

[Adolf Hamster]

So maybe it could be a QC issue? I've recently asked on other platforms and heard  from people that they have used maple leaf rubbers with the specna arms stock hop unit without issues. Although I do think they might be making things up or that they maybe aren't people that aren't very  trustworthy or someone to be taking advice from.

qc is an ever present possibility, i can't see anything intrinsically wrong with any of those parts, but it's always the way with airsoft that even good parts might not work quite right for a given gun.

I don't know what speed/delay issue might mean.

do you have a tappet plate delayer chip? if not worth installing one, it'll give the mag that little bit extra time to get a bb into the chamber before the nozzle closes.

I've been chasing an accuracy issue for a while in a rifle with a G&G green fitted.  I might try a swap reading this comment.  It lifts .28s and .3 fine and seals well, but still worth a try.   It's been a frustrating issue!  

what kind of issue? might be the rubber, as above sometimes an otherwise decent part can be weird if it ain't quite the right one for the gun.

 

[Skara]

I've recently asked on other platforms and heard  from people that they have used maple leaf rubbers with the specna arms stock hop unit without issues. Although I do think they might be making things up or that they maybe aren't people that aren't very  trustworthy or someone to be taking advice from.

I've been using ML rubbers on my Specnas since I bought them, never had any issue (Macarons, Super Macarons and MRs).

Am I not trustworthy?

 

[ak2m4]

Specna chambers are ZCIs.

Have you got a pic of one buddy, I've not come across this, they are blue and have slightly different moldings I've found.  I did however notice that the new hop chamber that are in E&C's look very much like the ones in Specna's.

 

[Skara]

Have you got a pic of one buddy, I've not come across this, they are blue and have slightly different moldings I've found.  I did however notice that the new hop chamber that are in E&C's look very much like the ones in Specna's.

I'm currently in queue to get my 5G shot, I'll take a picture as soon as I get home.

 

[Ragingrental]

I've been using ML rubbers on my Specnas since I bought them, never had any issue (Macarons, Super Macarons and MRs).

Am I not trustworthy?

The reason I say these people aren't trustworthy is because I asked on reddit and that can be a bit.... meh. It has a higher concentration of idiots than these smaller, secluded forums.

 

[Ragingrental]

Alright so my longer lonex spring came and the overspin and gearbox locking up is greatly reduced. However when it does lock up the gate X ASR flashes red and green. On the troubleshooting card  it says that this shows the "Trigger wire is connected to the negative motor wire". Says to check connections or email gate.

All I have to say at this point is just... wat... 

I'm not asking for anyone to help me on this one (emailed gate) but jesus christ has this gun  been a huge pain in the neck.

 

[Adolf Hamster]

Welcome to teching.

It does eventually get better

 

[Ragingrental]

Btw, if anyone wants to know screwfix sells fine grit sandpaper from 200-1200 grit for about £3.99 a packet containing 10 A4 sized sheets. Pretty worth it.