TheFull9 Posted October 29, 2011 Report Share Posted October 29, 2011 Did you make sure to turn off the hop before removing the barrel assembly? Got a chrono there so you can figure out whether it's the hop-unit or low FPS that's causing the problem? Quote Link to post Share on other sites
DRAGONER Posted October 30, 2011 Report Share Posted October 30, 2011 Hi, what do u mean with turn off the hop up?Is it so imortant?Sorry ,but i dont have a Chronometer. Quote Link to post Share on other sites
TheFull9 Posted October 30, 2011 Report Share Posted October 30, 2011 The hop-up arm itself is part of the rifle, whereas the hop rubber is part of the barrel assembly. If you pull out the barrel without turning the hop off, there's a chance you could've damaged the nub or some other hop related components. If you inspect all the hop parts and that isn't the problem, then I'd say a good move next would be to try and find a chrono (next time you skirmish for example) and get a reading, check the gearbox hasn't gone wrong somehow and is only putting out 200 FPS or whatever. Quote Link to post Share on other sites
Megalomaniac Posted October 30, 2011 Report Share Posted October 30, 2011 Depends on your round count the stock spring in my US PTS MASADA wore down and was only pull around 200 fps with a wild variance, after 18k rounds I removed it and compared it to a new one it had shrunk over 1cm and was kinked and bent. Quote Link to post Share on other sites
DRAGONER Posted October 30, 2011 Report Share Posted October 30, 2011 I have changed my spring to a M110 spring.Everything else is stock.I dont know to take the hop Up Unit out of the Rifle.Maybe the nub is damaged or something.Dont know. Quote Link to post Share on other sites
DRAGONER Posted October 31, 2011 Report Share Posted October 31, 2011 Today i cheked my hop Up Unit inside.Everything is okay there.After did a shooting test again.But the same problem.....the first ten shoots the bbs went down after15 metres and then after 10 ...5....3......2 metres.And in the End they roll out of the barrel.And during that the noise sounds pretty strange .Like no power when i trigger. Quote Link to post Share on other sites
Kossack Posted October 31, 2011 Report Share Posted October 31, 2011 Hey everybody! Well, after a few weeks, my ACR has given me my first problem... The fire select lever gets stuck on each of the 3 settings, and only moves if i press the lever itself (opposite from rotation axis) against the receiver. It makes this click noise that sounds like it's freeing itself from something and then it works as it should. In reality, this actually works good for me since this way there's no accidental safety off and such, but should i be concerned? And how do i fix it? Thanks! Quote Link to post Share on other sites
DRAGONER Posted November 1, 2011 Report Share Posted November 1, 2011 I think now that it is my Gearbox,something in my gear box.Not enough power through the chronometer,just 267 fps. Quote Link to post Share on other sites
DRAGONER Posted November 2, 2011 Report Share Posted November 2, 2011 So Guys, i solved the problem with my Masada.It was the Hop Up Bucking.I changed the stock Hop up bucking to a Madbull Shark One.And now the Hop Up works again pretty fine and the accuracy is better than before.So i am happy that the gearbox was not the problem. Quote Link to post Share on other sites
starburst Posted November 8, 2011 Report Share Posted November 8, 2011 Recently bought a second hand ACR which has had the handle part of the barrel quick release removed, has anyone been able to get the barrel off without this part? Obviously it may become important for future maintenance/ Cheers Quote Link to post Share on other sites
Squeek Posted November 8, 2011 Report Share Posted November 8, 2011 Hey everybody! Well, after a few weeks, my ACR has given me my first problem... The fire select lever gets stuck on each of the 3 settings, and only moves if i press the lever itself (opposite from rotation axis) against the receiver. It makes this click noise that sounds like it's freeing itself from something and then it works as it should. In reality, this actually works good for me since this way there's no accidental safety off and such, but should i be concerned? And how do i fix it? Thanks! Had this myself and fixed it. Just take the gear box out and tighten up the allen key screw there on your fire selector switch. The one you need to push in has just worked itself a little loose. One thing I will say it make sure to check you have the fire selector plate setup correctly before you put it back together if you haven't took it apart before! Quote Link to post Share on other sites
Kossack Posted November 9, 2011 Report Share Posted November 9, 2011 Thank you very much, SQUEEK! I'll get on it as soon as i have the time, and will post the results after. Thanks again! Quote Link to post Share on other sites
TK4235 Posted November 10, 2011 Report Share Posted November 10, 2011 I'm contemplating changing the air nozzle for the replacement one I have... Is it a pain to take the gearbox apart? And anything that I need to look out for? Quote Link to post Share on other sites
TK4235 Posted November 11, 2011 Report Share Posted November 11, 2011 (edited) Well I went window shopping and managed to pick up two things.. 1. RIS handguard (very nice)... 2. 11.5" CQB barrel.. Now I have a wee concern re the 11.5" barrel. I noticed that when I lock the CQB barrel into the receiver, the locking handle only rotates to the 4pm position. I think it locks after 3 clicks. It's very tight though. My original barrel locked at the 6pm position and locked after 6 clicks (centred with the gun). Is this normal for the CQB barrel? Does it matter at what position the barrel locks in? The hop is straight though, so I think it should not be a problem? A question re the RIS, what size batteries are folks using? Here's a piccy... Edited November 11, 2011 by TK4235 Quote Link to post Share on other sites
Kossack Posted November 12, 2011 Report Share Posted November 12, 2011 (edited) A question re the RIS, what size batteries are folks using? Well, so far i've managed to fit these 2 LiPo's: Main Battery 100x35x7mm http://www.combatevirtual.com/es/lipo/1219-hot-power-lipo-74v-1600mah-15c.html Backup Battery 120x23x8mm http://eagle6.co.uk/shop/firefox-7-4v-1200mah-20c-split-pack-lipo.html Anything bigger than those won't fit, and will press too much against the barrel so i opted for smaller, less powerful batteries. It's really tight inside that RIS, and one advice i can give you is that you should remove the wire wrench lever from the barrel, it will give much more room to fiddle with, but it's still very much claustrophobic in there. The lever comes off really easy and no damage is done to any part by doing so. I always carry the lever with me on my vest's utility pouch, along with the backup battery and the tester, so i'll be ready for any scenario/malfunction. Edited November 12, 2011 by Kossack Quote Link to post Share on other sites
TK4235 Posted November 12, 2011 Report Share Posted November 12, 2011 Hi Kossack I've just ordered 2 slim lipos similar to your main battery dimensions (so good news there) and they only cost me £23.50 delivered I'm more concerned about the fitting of my CQB barrel... it's very tight on 3 clicks as shown in my piccy above... Can anyone who has a CQB barrel comment please... ta Quote Link to post Share on other sites
TK4235 Posted November 13, 2011 Report Share Posted November 13, 2011 Come to think of it, It seems as if the CQB barrels have been redesigned slightly so that they only need a few clicks to lock in... this now makes sense as I know earlier models suffered from barrel wobble (page 41'ish of this thread) and spacers were supplied to lock the barrel in with less clicks... (just a hunch)... Quote Link to post Share on other sites
morbiz Posted November 25, 2011 Report Share Posted November 25, 2011 I know owners of the masada have been worried about the figure 8 nub. The Toothpick did not help me but I found another use for it. I made a replacement for us. Works great!! Feel free to check it out, I made this post and thought about starting another here with the same info. http://www.airsoftohio.com/forums/showthread.php?t=37564 Let me know if it will help, and I'll post it up on here also That is straight up swag. If anyone wants good picks of the Wii Tech stuff and the stock stuff go here. http://www.airsoftforum.com/board/Magpul-Masada-t212295.html http://www.airsoftforum.com/board/Magpul-Masada-t211270.html&hl=masada Quote Link to post Share on other sites
TK4235 Posted November 26, 2011 Report Share Posted November 26, 2011 For info, I tried another CQB barrel and it was the same as before, so it seems the new ones may have been re-tooled so that they lock for quickly... Still love my Masada... so diffferent from an M4 and it just looks the meat! BTW, with the hop functioning optimally, the range on this baby is awesome..... Quote Link to post Share on other sites
AnakChan Posted November 27, 2011 Report Share Posted November 27, 2011 Come to think of it, It seems as if the CQB barrels have been redesigned slightly so that they only need a few clicks to lock in... this now makes sense as I know earlier models suffered from barrel wobble (page 41'ish of this thread) and spacers were supplied to lock the barrel in with less clicks... (just a hunch)... I want to kill this rumour once and for all...there wasn't a barrel wobble issue. It happened to -one- person (and he's a friend of mine). I've talked to eHobby and a Magpul PTS rep and that was an isolated case. It's really a case of someone creating a mountain out of a molehill. Sadly with internet forums if one person were to yell loud enough, it causes widespread panic. Having said that, the ACR had other issues...burnt trigger (go search in AirsoftMechanics about it), selector occasionally needs to be flipped back-n-forth between semi and full, and lousy bucking (which is easily replaced). Quote Link to post Share on other sites
TK4235 Posted November 27, 2011 Report Share Posted November 27, 2011 (edited) I want to kill this rumour once and for all...there wasn't a barrel wobble issue. It happened to -one- person (and he's a friend of mine). I've talked to eHobby and a Magpul PTS rep and that was an isolated case. It's really a case of someone creating a mountain out of a molehill. Sadly with internet forums if one person were to yell loud enough, it causes widespread panic. What's that saying, if it's on the Internet it must be true... Edited November 27, 2011 by TK4235 Quote Link to post Share on other sites
Stan-O Posted November 28, 2011 Report Share Posted November 28, 2011 I hope the experts can chime in. I have a few issues with my Masada ACR: 1. The FPS suddenly dropped from about 400 to 360. After approximately 1000 shots. Could it be the spring breaking in? 2. Could be the cause of #1: the hopup housing (the part which is inside the upper, not on the barrel) is extremely wobbly when I remove the barrel and then detach upper from the lower. Is it supposed to be like that? If not -- how is it fixed inside and how can I tighten it and/or remove it for inspection? 3. Hopup setting (even the highest one) seems to have no effect on the trajectory. I've changed the bucking to PDI W bucking, still no hop. I can see the nub lowering inside the housing when I rotate the hop wheel, but I guess it's either not reaching down enough or not working because of issue #2. Any suggestions? thanks! Quote Link to post Share on other sites
sacairsoftsn00py Posted November 28, 2011 Report Share Posted November 28, 2011 If you've read reviews, you'll know what the answer is with regard to the hop bucking. Lol. Anyhow, quick answer is Guarder clear/soft 50 hop bucking Quote Link to post Share on other sites
jimmythetool Posted December 11, 2011 Report Share Posted December 11, 2011 Can anybody with a better understanding of the ACR's internals foresee any problems with me installing a 120 spring and short m120 high speed motor? More specifically this spring and this motor Quote Link to post Share on other sites
yellowjournalism Posted December 13, 2011 Report Share Posted December 13, 2011 (edited) Hey guys, just picked up a used ACR with high speed gears and am loving it. Previous owner had a Guarder bucking/Madbull ultimate 6.01 363mm and I believe an old sp110. I dropped in a Systema bucking/Prommy 6.03 (only 300mm no less) and it shot significantly better. I was drilling WE-tech .28g's into suckers all weekend, LOTS of fun, I love this gun! Of course I want to get the most out of it but with a higher priority on consistency and reliability...I don't need 400fps and 30rps. I do have the same questions about hopup that sn00py answered with "Guarder clear/soft 50 bucking" but I'd like to know WHY that guarder bucking solves the issue of the hop up having barely any effect. I have read many many reviews of the Masada but the only clues I ever found about hopup were in forum threads...and those were packed with the usual anecdotal/hearsay evidence. Trust me I have tried to do the research...Sn00py can you point me in the direction of a review that explains this? Why does the Guarder clear/soft 50 one have more effect on the guarder bucking from the previous owner and my systema? A lot of people recommend the PDI W Hold bucking, what do you think of that? And finally, it seems that a new nozzle will help a lot, and I read that the Wii Tech nozzle is good, but the hop up chamber is useless. Can anyone recommend a chamber that is good, or should I not even bother replacing it? I ask because I have my Masada detail-stripped and if I'm gonna replace the hop up chamber, I want to do it now, because I am NEVER punching out those RIDICULOUS rollpins ever again!! Edited December 13, 2011 by yellowjournalism Quote Link to post Share on other sites
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