HolyHandGrenad3 Posted December 17, 2009 Report Share Posted December 17, 2009 Does anyone know how to fix the infamous problem with P90s where semi-auto is almost impossible to pull? My friend when he got his long barreled KS P90 his was able to be pulled, but was quite hard to pull. Mine on the other hand was perfect, UNTIL I went messing in my GB, and now mine cannot be shot on semi unless I use 2 fingers! Which is fine for decompressing my spring but impossible to do during a game... I instead have to 3 shot burst always... Anyone have or know where a picture guide to fixing this problem is? I am not the first person to have this problem I know, I've heard of it happening to every kind of P90 from KS to TM... I guess it has something to do with the selector plate shifting, but I have no idea where to begin. Thanks. Link to post Share on other sites
gzus11 Posted December 17, 2009 Report Share Posted December 17, 2009 take it apart again, and carefully reassemble correctly. ive had a p90 apart several times, and my mate managed it. do you have any pictures of it? Link to post Share on other sites
HolyHandGrenad3 Posted December 17, 2009 Author Report Share Posted December 17, 2009 What exactly do you want pictures of? Link to post Share on other sites
Stealthbomber Posted December 17, 2009 Report Share Posted December 17, 2009 "My P90 stopped working properly after I took it to bits"? That's not the "famous P90 Semi-Auto Problem". That's the famous "I screwed up my gun because I don't know what I'm doing" problem. There shouldn't be any real force required to shoot in semi with a P90. If you're having to pull the trigger that hard it's probably because you've screwed something up and you need to unscrew it. I'd suggest you start by removing the gearbox and activating the trigger-block manually. If that works easily then the problem is something to do with the trigger bar instead. There are 2 sets of trigger contacts on the P90. One set for semi (which make contact first) and another set for auto (which require the shooter to pull the trigger further back). My first thought is that your problem is that the semi contacts are burned and that's why you're having to mash the trigger to get it to fire in semi. While you have the gearbox out of the gun, inspect the contacts and clean them if neccesary. If this IS your problem then you need a mosfet to sort it out properly. FYI, the ACTUAL "P90 semi problem" is that if you take your finger off the trigger before the firing cycle is complete the gun can lock up and won't fire again until you manually reset the cut-off lever (usually by giving the gun a gentle thump). Link to post Share on other sites
HolyHandGrenad3 Posted December 17, 2009 Author Report Share Posted December 17, 2009 Tried it before with the GB out, the "trigger-block" also has to be pushed quite hard. And FYI, I know my way around the major parts in a GB and did not go anywhere near the trigger assembly. And also, I've heard of this happening many times with P90s but cannot find anywhere with a solution... I didn't come here to get mouthed at about how I have no idea what I'm doing. Thanks. Link to post Share on other sites
Stealthbomber Posted December 17, 2009 Report Share Posted December 17, 2009 Tried it before with the GB out, the "trigger-block" also has to be pushed quite hard. And FYI, I know my way around the major parts in a GB and did not go anywhere near the trigger assembly. And also, I've heard of this happening many times with P90s but cannot find anywhere with a solution... I didn't come here to get mouthed at about how I have no idea what I'm doing. Thanks. Please yourself. Best of luck with it. Be sure to let us know how you get on. Link to post Share on other sites
HolyHandGrenad3 Posted December 17, 2009 Author Report Share Posted December 17, 2009 Thank you for not being *too* sarcastic that time. So if it is the mosfet, what would you recommend? EDIT: Also sorry for the way I acted up there ^. It just struck a nerve... Link to post Share on other sites
jagillham Posted December 17, 2009 Report Share Posted December 17, 2009 Ahhhh, the old I want advise, but I don't need it Unless you want/need bells & whistles. A standard active braking one will be more than enough. Infected is a good place to start. Link to post Share on other sites
gzus11 Posted December 17, 2009 Report Share Posted December 17, 2009 the mosfet and how to build a mosfet threads are the best place to start. but if your trigger mech is stiff, maybe something has got into either the safety or the trigger bar guides. strip it out clean it and put it back together. i apologise also for sounding harsh, but so many moan that things dont work after a bit of diy. Link to post Share on other sites
The General Posted December 18, 2009 Report Share Posted December 18, 2009 Have a look to see if the semi auto trigger contact has got knocked back so when you press the trigger, both trigger contacts are engaging at nearly the same instant. I had this with my AUG. I simply pressed it out a little and made sure one engaged seperatly from the other. You want two distinct levels when pressing the trigger. Link to post Share on other sites
HolyHandGrenad3 Posted December 18, 2009 Author Report Share Posted December 18, 2009 Double post, please delete... Link to post Share on other sites
HolyHandGrenad3 Posted December 18, 2009 Author Report Share Posted December 18, 2009 i apologise also for sounding harsh, but so many moan that things dont work after a bit of diy. I agree, I've had to help plenty of people on Airsoft GI's forums for basically the same thing I've done here... Well, anyways, I don't completely understand the trigger mech. in a P90, which contact is semi and which is auto? Anyone happen to know where a guide for this is? I sorta' wonder if the semi contact didn't get pushed back too far, and needs pulled back out a lil'. Thanks. Alright took some pictures of my trigger block... Unfortuanately, my camera can't focus very close, so they're not great quality. Here's links: Right side: http://i678.photobucket.com/albums/vv145/t...61/DSCF3803.jpg Left side: http://i678.photobucket.com/albums/vv145/t...61/DSCF3806.jpg From the bottom: http://i678.photobucket.com/albums/vv145/t...61/DSCF3805.jpg Looks like my trigger block's contact is burnt, will that clean off? And how did it happen? How can I keep it from happening again? Link to post Share on other sites
Shredder_SCS Posted December 18, 2009 Report Share Posted December 18, 2009 Here's what I did on mine... I wound some e-tape on the area of the metal "thingy" that pushes the trigger towards the trigger contacts and now my semi-auto problem is gone. Happy Holidays! Link to post Share on other sites
HolyHandGrenad3 Posted December 18, 2009 Author Report Share Posted December 18, 2009 I'll try that, but if I can't get it with the body together, that won't work for me... If I take the body apart, I'll never get it back together correctly From what I understand P90 bodies are hard to put together. Thanks. Link to post Share on other sites
Shredder_SCS Posted December 18, 2009 Report Share Posted December 18, 2009 It actually is very easy to remove the metal thingy. If you want, I'll take a video tomorrow and post it at youtube for you to see. My youtube name is rickybh and I post videos every week. I also have a thread with regards to my KS P90 and you might find some useful information there. Here's the link... KS P90 Link to post Share on other sites
HolyHandGrenad3 Posted December 18, 2009 Author Report Share Posted December 18, 2009 If you would, I'd appreciate it very much. Guess your P90 was one of the first gen KSes (as junky as that thing is errr, was), mine measures up with E1s and CAs (not great, but good enough for what I use it for) but then again, I've put $200 worth of upgrades into mine. EDIT: Nah, figured out how to remove it, quite easy. Thanks. Link to post Share on other sites
HolyHandGrenad3 Posted December 18, 2009 Author Report Share Posted December 18, 2009 Thanks Shredder! My semi-auto is working better than ever now! Link to post Share on other sites
Warning Posted December 18, 2009 Report Share Posted December 18, 2009 hot damn shredder that was one crazy p90 Link to post Share on other sites
HolyHandGrenad3 Posted December 18, 2009 Author Report Share Posted December 18, 2009 In my honest opinion, that e-tape fix should be done to every P90, it made my trigger pull better than even the highest grade airsoft guns I've ever shot. Dang, in fact it shoots better than my real steel guns now, haha. Link to post Share on other sites
Shredder_SCS Posted December 19, 2009 Report Share Posted December 19, 2009 Wow! Congratulations! Hello Warning, any news? Link to post Share on other sites
Warning Posted December 19, 2009 Report Share Posted December 19, 2009 @ Shredder: not had chance to try out your Spacers but i have received them, I'll probably be able to test them out on sunday On topic: Hopefully i won't need to do this when i get my ACM P90 Gearbox, we'll see when i get around to ordering it Link to post Share on other sites
Recommended Posts
Archived
This topic is now archived and is closed to further replies.