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March 24th, 2014, 14:33
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#331 |
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I've been trying to run my RA-Tech aluminum nozzle for a bit and I haven't been able to get it to run a stable FPS. Worse case is usually a 100 fps jump. Best case I've gotten is a 30-50 fps jump. This is after switching to the stock spring. I'm wondering if anyone has found a way to stabilize this yet? Or should I shelf this POS until I can find a suitable spring for it?
Also of similar note, I heard that RA-tech revised the aluminum bolt, is this true? Is there a newer gen that isn't a POS? |
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March 25th, 2014, 01:09
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#332 | |
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March 25th, 2014, 08:41
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#333 | |
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Does anyone know if the nozzle was also updated? Or is it still the same design? |
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March 26th, 2014, 04:21
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#334 | |
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Otherwise you can make your own springs, but it's a lot of effort. A guide to making springs (for all sorts of things) can be found below: http://firearmsdesigner.com/?p=259 When I got my ra alu nozzle, the set screw at the base of the nozzle was loose, and the floating valve spring looked very weak. In all honesty the ratech alu nozzle just isn't worth the trouble  . I run the WE plastic nozzles and install a NPAS. Fluctuations went down to an 'acceptable' range for a gbb . The newer WE plastic nozzles seem to be better quality than the old ones, haven't had a problem with mine so far anyway, but only time will tell.
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March 26th, 2014, 12:46
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#335 |
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Agreed with you there, CheapChump. I used the aluminum nozzle for one game and it was utter trash (fluctuations up to 100 fps). I also had issues with that set screw coming so loose that it made the nozzle seat far forward that I couldn't separate the upper and lower because the bolt was stuck into the buffer (that was fun).
I was able to find some very tense springs that are about the same diameter of the stock floating valve spring and a bit longer than the stock RA-tech nozzle spring. So I'm experimenting with those right now. The best luck I had so far was +/- 3 FPS on about 5 shots, but then I realized it was venting more gas than it was supposed to and the full mag was done after 10 shots... I'll report back if I find some better results. I've been using my stock nozzle and it is still by far the best performer. With the stock nozzle I get +/- 5 FPS, so I would expect the RA-Tech to be just as good or better. Also as a side note, I was able to get just the stock nozzle head (as opposed to the entire nozzle) and ordered a whole bunch of em. Here's the link for those interested in that spare part: http://www.evike.com/products/38475/ Last edited by SF_Chewy; March 26th, 2014 at 12:48.. |
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March 26th, 2014, 13:24
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#336 |
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Wanted to get your opinions on hopup buckings, I currently have a king arms red bucking installed in my m4, and at lower fps it works pretty good (300-350fps with npas), but once I switch out to non npas shooting ~500fps, bb's hook up and to the left after 50yards or so. I'm thinking that the bucking is the problem, maybe too soft, any suggestions?
It's an OB, with a RA 6.01tbb, gen 2 mags |
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March 26th, 2014, 13:36
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#337 |
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I have the RA-Tech Aluminum Nozzle installed, I don't understand what people are complaining about. My scar works beautifully with the aluminum nozzle, yes there are some times where fps seems to drop a little, but not by 100 fps or anything. I don't have a chrono so I can't be sure, but by feel and visual tracking, definitely seems like I'm shooting fairly consistently.
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March 26th, 2014, 14:12
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#338 |
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I'm using the A+ bucking. At high and low velocities it has worked well for me. I also tend to use .25s and .28s.
Scar aluminum nozzle =/ M4 aluminum nozzle. Different designs so they perhaps put more thought into the Scar nozzle... M4 nozzle is a POS |
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March 26th, 2014, 17:07
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#339 | |
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I have the RA aluminium nozzle and RA steel bcg, which is what I'm using to shoot 300-350fps, and it's working pretty well now, but it took a lot of tweaking to get it to work properly. I did the spring swap from the plastic nozzle, but it was the biggest PIA to do. The set screw had so much thread lock on it, that it stripped. So I drilled out the set screw. The rear part that unscrews also was covered in threadlock (end to end, every thread) so that was a super PIA to unscrew. Story goes on, but long story short it works now. And if you're using the aluminium nozzle, you pretty much have to use their steel bcg, because the steel slide rails eat away at the we softer metal. Just from my experience. |
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April 22nd, 2014, 21:20
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#340 |
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Gentlemen I have found a solution to our aluminum nozzle woes. I was browsing a shop when I stumbled upon this: Ra Tech Flute and Spring Upgrade. I read it recently on the Ra-Tech site and totally forgot until I stumbled upon it.
I went out on a limb and bought it. After installation and testing I have VERY consistent FPS readings using the aluminum nozzle. I chronoed at 400fps +/- 5 with 0.25s. There were no erratic jumps in FPS either. So looks like this fix is good!! Unfortunately it does cost to get the part, but as of right now I'm very happy to not have to deal with shattered nozzles. I'm going to fiddle with it some more and see what other results I can get, but right now it works! |
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July 21st, 2014, 22:24
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#341 |
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The long awaited steel hop up chambers. Lets see how they really perform. With this upgrade, this means that we can build WE M4/M16 from scratch without buying a whole gun to start a project!
Last edited by turok_t; October 6th, 2017 at 22:45.. |
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July 21st, 2014, 22:27
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#342 | |
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July 21st, 2014, 23:59
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#343 |
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Green Synergy
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Mine's still in Richmond. Boo-urns.
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July 22nd, 2014, 00:19
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#344 | |
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Am I wrong thinking those won't fit a WE Scar?
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July 22nd, 2014, 00:33
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#345 | ||
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Scar uses a different (better) hop-up chamber.
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