bankz5152 Posted January 30, 2011 Report Share Posted January 30, 2011 Just really ###### me off. Love the gun so much and sad to be let down by somthing so small.. None the less i was planning attempting to make a drum mag so the broken beyond repair mag can be used for that! Quote Link to post Share on other sites
Panoptes Posted January 30, 2011 Report Share Posted January 30, 2011 I've banged-n an H nub thang and I'll see tomorrow if that's sorted the overhopping. 1 Quote Link to post Share on other sites
muffe66 Posted January 31, 2011 Report Share Posted January 31, 2011 Nice thingy for our G36 GBBR: http://www.ebairsoft.com/g39c-magazine-sticker-p-4100.html Ordered 11 Quote Link to post Share on other sites
jigairsoft Posted January 31, 2011 Report Share Posted January 31, 2011 Nice thingy for our G36 GBBR: http://www.ebairsoft.com/g39c-magazine-sticker-p-4100.html Ordered 11 Niceeeee Quote Link to post Share on other sites
GingaNinga Posted January 31, 2011 Report Share Posted January 31, 2011 Just can't manage to tighten the outer barrel on my G39C. I read a few pages back that removing the o-ring or using shims might help. Would these types of shims be OK? They are for the SOPMOD M4 Electric Blowback, but seem to be available to me here in Japan, so wanted to confirm that this is what i would need. http://www.first-jp.com/items/12/02/08/detail.php?itemcode=1202FFA00067 Also, my inner barrel was very wobbly on my G39C, but all I had to do was to tighten the small philips screw that is pictured in Kruck's tutorial. It might be an easier solution than Riko posted, which involved sourcing a longer grub screw. Quote Link to post Share on other sites
mnmc10 Posted January 31, 2011 Report Share Posted January 31, 2011 I get the same with 0.28 and after 5 meters I can see them go up (alot)... Does a replacement rubber adjust this or does one need to modify the actual hop mechanism ? does the bbs go up even when you turn the hop off? a really simple solution is to cut up an oring that is slightly smaller then the stock hop nub. heck you can even use the insulation of an electrical wire. Quote Link to post Share on other sites
Break100 Posted January 31, 2011 Report Share Posted January 31, 2011 mine still over hop with 0.3, if i turned the hop off the bb will roll out. so i chose to use the iron sight by a slight modification to the rear sight. to work arround this trouble, I put 2 metal o-rings under the rear sight screw like this and turn down the sight to the maximum. The result is very impresive as I have a flat long range bb flight path. it will be look like this from the left side. For those who tired with the trial and error fixing the overhop issue, this might be a useful alternative for you guys Quote Link to post Share on other sites
Panoptes Posted January 31, 2011 Report Share Posted January 31, 2011 I mangaed to stabilise my outer barrel by wrapping the hop outer unit with one layer of electrical tape. Jams-in real tight now. Quote Link to post Share on other sites
mnmc10 Posted January 31, 2011 Report Share Posted January 31, 2011 (edited) wait when you say it overhops it means the bb goes on a straight path then curves up at a certain distance right. cause if you can turn the hop off to the point that the hop rubber no longer grips the bb then you should be able to set the hop so you can achieve a straight path when using .25's even on .2 . on my g36 at first the bb curves up which means the hop has too much bite on the bb, so i replaced the hop nub. now that my bbs fly straight the steel sights doesnt line up with the bb. at first i did the same rear sight mod as break100, still doesnt line up straight. so what i did was i moved the front sight upward. i can now zero my sights! Edited January 31, 2011 by mnmc10 Quote Link to post Share on other sites
Panoptes Posted January 31, 2011 Report Share Posted January 31, 2011 The stock nub is too fat and therefore puts too much grip on the BB even when 'off'. Adjusting your sights to compensate may "work" but it's the wrong way to tackle the problem. Quote Link to post Share on other sites
Atsalakotos Posted January 31, 2011 Report Share Posted January 31, 2011 My G39C shoots straight with very slight overhop with 0.25g. 0.28g even need the hop up to be turned up slightly to fly straight. Turned out pretty accurate for me, I am amased. Quote Link to post Share on other sites
bankz5152 Posted January 31, 2011 Report Share Posted January 31, 2011 Can someone tell me how to remove the hop unit? Try as I might I cannot work it out! Quote Link to post Share on other sites
NonEx Posted January 31, 2011 Report Share Posted January 31, 2011 Look at the previous page theres a great guide. As to the question about my overhop. I turned the hop all the way down (I assume thats what you mean by "off" ?), still overhops as I described. but then I had the problem mentioned above about the BBs just falling out instead... I actually never shot it with hop because I had read about this prior to getting mine, first thing I did was turn the hop down... Quote Link to post Share on other sites
kruck Posted February 5, 2011 Report Share Posted February 5, 2011 Finally got around to shooting this outside. Hop off, got a good range with .28g, although the BBs were flying high (not really overhopping, but above the sight-picture). Went out to a fantastic range with very good consistency. Stuck some .4g in it, the hop on about a quarter, slightly lower but still above the sight-picture, even better range/consistency. Might have helped if it was sunny, I might have seen the light brown .4g BBs more clearly, but in any case the hop needs some work. When I get around to ordering an NPAS I'll buy a hop rubber or two (I'd really like a stock TM rubber, but I've sold all my TM GBBs long long ago) to test it with and try out different sized hop spacers to see what can be made of the trajectory. If it can't be rectified I'll just stick a RDS on top to point at the BBs Also as an aside, .4g BBs are AMAZING in KSC USP .45, BBs go on forever with a very stable, flat trajectory. Indoor groupings show an improvement over .28g too. The hop is easily capable of handling them, with the hop 2/3rds the way on. Quote Link to post Share on other sites
kithooton Posted February 5, 2011 Report Share Posted February 5, 2011 Really Sorry if its been said before. But has anyone used Propane in this gun yet.? What is the FPS, Rate of Fire like. Can it handle it? I had a Old 1st Gen M4, WA i Think. It was rubbish in the U.K due to the weather. Been Looking at this gun and the System and Mags look much better. Anyone in the UK got one. How does it Preform in our english weather? Sorry Quote Link to post Share on other sites
bankz5152 Posted February 5, 2011 Report Share Posted February 5, 2011 EASILY Handle propane. Ive been getting ~335fps with .28gs @ 4C outside. One gas charge in the winter will last almost 2 mags. Exellent gun. Quote Link to post Share on other sites
kithooton Posted February 6, 2011 Report Share Posted February 6, 2011 Amazing. What Fps results for english weather. 134a Gas? Green Gas? I want to use it for CQB 328 fps limit. Mall Reading. Quote Link to post Share on other sites
GingaNinga Posted February 6, 2011 Report Share Posted February 6, 2011 I am getting around 90-92 meters per second with HFC gas and well over 1J with propane. Only problem with HFC is that is won't cycle the bolt in cold weather. I would suggest propane with the NPAS installed. Quote Link to post Share on other sites
kithooton Posted February 6, 2011 Report Share Posted February 6, 2011 What is a NPAS, a kit to handle propane? Over 1j, over 328fps! Not good. Green Gas Fps in cold weather? Quote Link to post Share on other sites
Reppyboyo Posted February 6, 2011 Report Share Posted February 6, 2011 Most if not all your questions are already answered in this thread. Quote Link to post Share on other sites
jethrotull Posted February 6, 2011 Report Share Posted February 6, 2011 . please dont buy one you will break it 1 Quote Link to post Share on other sites
Kretschmer Posted February 7, 2011 Report Share Posted February 7, 2011 Got one Ra-tech custom today. Ra-tech hop bucking, 6,01 barrel and NPAS. It shooted so-so, easily overhopped, bbs fell from the gun barrel when you lowered it... Not really lovable even though it fires and feels really nice and durable. Ended up installing a KM RH 55 blue hop rubber an Element black H-nub and the good old silicone oil spraying. Everything now solved, feeds well, spectacular, sight-aligned hop effect, no power fluctuations( forgiving the first three shots when mag full). Thought you guys may want to look at it Quote Link to post Share on other sites
danielsilva Posted February 7, 2011 Report Share Posted February 7, 2011 (edited) Got one Ra-tech custom today. Ra-tech hop bucking, 6,01 barrel and NPAS. It shooted so-so, easily overhopped, bbs fell from the gun barrel when you lowered it... Not really lovable even though it fires and feels really nice and durable. Ended up installing a KM RH 55 blue hop rubber an Element black H-nub and the good old silicone oil spraying. Everything now solved, feeds well, spectacular, sight-aligned hop effect, no power fluctuations( forgiving the first three shots when mag full). Thought you guys may want to look at it I've said before and i'll say it again, the RA-tech hop up bucking is utter bullpoo. Edited February 7, 2011 by danielsilva Quote Link to post Share on other sites
bankz5152 Posted February 8, 2011 Report Share Posted February 8, 2011 Ive got the standard bucking + an Element H-Nub which has made this exellently exellent! Quote Link to post Share on other sites
Atsalakotos Posted February 8, 2011 Report Share Posted February 8, 2011 Ordered an NPAS from RATECH today, hope it wont be that hard to install because i dont have excessive GBBR knowledge... Been testing it, everything action is smooth and the toy is solid. Even with the stock hopup rubber, the nozzle is held in place nicely, and it doesnt vent too much gas. But. I have a small problem. If i cock the gun on full auto slowly (very little force), the trigger wont engage the hammer an full auto, only semi. Is that normal? Quote Link to post Share on other sites
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