Ragingrental

How would I check if I am getting PME once I install a longer spring and SS a tooth or two? Is there a guide for that on this forum already? Hopefully the gun will work just fine now although I might as well pick up a gate warfet some time in the near-ish future as it seems to be quite heavily recommended. But if I end up with a skirmishable gun that doesn't have any PME issues and is consistent and can hop heavy BB's I'll be very happy. Still going to always bring my back up with a few spare mags just in case haha.

Alright so I guess I'll be ordering a new piston O-ring and nozzle off AK2M4 now. So I now have two buckings to play around with on the way as well as new O rings for my piston head and a new nozzle. Fingers crossed it works.

Well I am still relatively new to this whole AEG teching thing and I heard a few posts up that a metal nozzle if not aligned correctly can shred your bucking? I'd rather not take the risk yet on something I haven't looked into much.

I looked at their store and I was a bit bummed out that they had only metal nozzles despite them being the appropriate size.

Aye, I'll do that when I get around to modding. Still struggling to source an appropriately sized nozzle though.

So PME and overspin aren't connected in a way? I was under the impression they were but it's starting to make a little more sense now. Overspin is just a little bit of precocking rather than something that will shred your gears over time. I guess "premature engagement" is pretty self explanatory. So when you get overspin it's simply that the drivechain has too much momentum to be stopped? So it just keeps going and possibly double fires or whatnot?

I do actually own a chronograph already. I think I did mess up a bit upgrading everything at once - it made it a bit harder to play the game of elimination. I'll work on the PME and overspin first as that's what will damage the gun over time and it just seems like a logical step. Ensuring good air seal can be secondary. My edge has a very similar barrel to your C02, but I am not so sure about the cylinder. I guess I'll just see when I install the new parts, but your post has convinced me it surely won't be too bad.

Yeah I guess you are right. Is there any particular nozzles that you would recommend other than the FPS ones you mentioned? Also I am slightly worried about the FPS being a bit low with SS + a M100 spring. But I guess it surely won't be as bad as it is right now. I have heard SS'ing removes about -15fps per tooth? I wouldn't mind picking up a slightly stronger spring in the future, I just want to get the gun skirmish ready by this weekend.

Would a maple leaf or PDI W hold work with a PDI barrel? I ordered a G&G green for now just to be able to go out and play. I do have a lonex M100 spring on the way as well. So if I get a stronger spring and possibly short stroke a few teeth there should be less PME? Could I maybe just swap the gear set?

Just re-chronoed the gun. Got some more up to date figures using a freshly charged 7.4v battery and specna arms 0.2g BBs. Full auto ROF - 20 RPS Average of 241 fps in full auto 5 shots fired in semi auto 1- 240.7 FPS 2- 244 FPS 3- 239.8 FPS 4- 241.8 FPS 5- 245.2 FPS Compared to around 290-300FPS before. My new bucking should be here soon and I believe that the bucking is probably the culprit as I had to sand down the feed lips to make it feed properly and that made them quite rough and torn, most likely ruining the airseal. I'll update you guys then but any input is obviously welcome.

Morning everyone. I unfortunately can't remember what the gun was shooting before but it was about the 300 mark. As for full auto it is shooting 13 RPS! What? No way that's normal. I need to try a different 7.4v battery. I'll try the new hop rubber first and also maybe make sure the nozzle to hop seal is good as I'm pretty confident that the gearbox air seal is totally fine. Might also try the new spring. I don't really want to get a gate warfet because I'm not very keen on throwing more money at this yet but maybe in the future I'd consider it.

I had recently (well to be honest it was a couple months ago) upgraded my specna arms SA-E07 to improve trigger response but did not have batteries to try it out. Well today my batteries finally turned up so I got to try the gun out and chrono it. Accuracy is just fine but there is still overspin (so bad that it burst shoots on semi) as well as low, inconsistent FPS. As in 200 fps with .25s and 240 with .20's with a variation of about plus or minus 10 FPS. I have ordered a new spring and hopup bucking (current hopup bucking was torn for some reason) but I am a bit stuck in the process of elimination as I don't have much experience with this. Parts list Prommy purple bucking PDI 6.03mm AEG barrel DIY Flat nub Stock hop unit All gearbox compression parts are stock 13:1 SHS Gear set SHS High torque motor Stock M90 spring Everything else is stock and the gun still has the X-ASR mosfet. I am using 7.4v 25-50c 1300 mah lipos. Sorry if I missed out some important details - not exactly sure what parts are relevant when trying to troubleshoot such issues.