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CYMA vs. Unicorn AKS74U (56k nyet!)

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Old May 15th, 2008, 11:18   #31
BoB
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One last question. Can I use a 9.6v without worrying?
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Old May 15th, 2008, 11:53   #32
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One last question. Can I use a 9.6v without worrying?
mhm
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Old May 17th, 2008, 14:29   #33
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I find that because of the sheet metal receiver the Unicorn tends to be a little rough with your mags. Also the open ended bottom means it's possible to seat the mag improperly so you need to watch more closely. I haven't had any problems with the CYMA hicap or the Echo1 hicap I bought (the latter of which has an Allen key for winding, VERY handy!).

Normally I prefer lowcaps and realcaps but I don't have any decent rigs to carry that many AK mags, so I've been sticking with the hicaps. So far experiences have been very good.
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Old May 17th, 2008, 15:17   #34
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damn, I seriously want a CYMA now.
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Old May 17th, 2008, 18:42   #35
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The Unicorn looks like it's had way more use. Looks more real.
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Old May 21st, 2008, 02:56   #36
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Today we took down the Unicorn to downgrade it for indoor play. Even with the hop on I couldn't get it to shoot below 350 on its own so a new spring needed to be installed. We chose a stock TM spring that had previously chronoed at 285 fps.

Unfortunately I didn't think to take pics along the way so try to imagine this as I go along. The hop unit is screwed down into two steel rails that appear to be a part of the trunnion, which is riveted to the receiver. Near as I can tell there is NO taking down of the trunnion. I don't really mind because I like the cleaner, authentic look it gives versus the multiple screws on the CYMA. Disassembly is a matter of unscrewing the Allen screws and pushing the hop forward towards the trunnion, then pivoting the gearbox out. The hinged top cover is also permanently fixed in place so you have to rock the box out.

The gearbox appears to be a CYMA unit, marked CM.02. Nothing too remarkable about it. The nozzle is clear as is the spring guide, and aren't too confidence-inspiring. They were replaced with a Deep Fire M4 nozzle and a CA V3 bearing spring guide.

Due to the steel receiver being thinner there is much more room around the sides of the gearbox in certain spots. Other supporting areas have been shimmed with steel plates inside the receiver. Notably, on the left side of the receiver towards the back, there is a nice channel for which to run wires down to the motor. A silicone-sheathed 14 gauge wire was selected to replace the stock wiring. In our experience most AKs cannot even take 18 gauge silicone wire as it's just too tight in the pistol grip but the Unicorn is different. We decided to stick with the stock wire leading from the motor to the selector plate and replace the rest, which fit perfectly. A Deans connector replaced the Tamiya.

Pictures of the final result were taken but I don't have them yet. The difference was a marked increase in rate of fire and trigger response time, partly due to the increased conductivity of the Deans connector and wiring, and lighter spring. I expect it to chrono around the 300 mark which should be just right for XT games. Rate of fire is perfect for this gun which typically achieves a slightly higher ROF than a full size AK due to the shorter barrel system. I am extremely pleased with the results of this simple mod!
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Old May 21st, 2008, 09:01   #37
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ok thats it getting the unicorn know just need to find one...
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Old May 22nd, 2008, 11:00   #38
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Are the battery clips for the AK's (9.6v) mini size?

Last edited by BoB; May 22nd, 2008 at 11:11..
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Old May 22nd, 2008, 12:30   #39
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They're stick batts with Mini connectors.
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Old May 22nd, 2008, 12:49   #40
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They were replaced with a Deep Fire M4 nozzle and a CA V3 bearing spring guide.

I tought v2 and v3 nozzles were NOT interchangeable? one being longer than the other. Can someone confirm this.
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Old May 22nd, 2008, 13:49   #41
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Andrew, all you need is some long 45-rounder style 5.45 mags and you'll be pimpin in style!
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Old May 22nd, 2008, 14:35   #42
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I'm not a Kalashnakov kind of guy, but I've gotta say, that Unicorn gives me wood.

Something doesn't sound right about that last sentence...
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Old May 22nd, 2008, 20:01   #43
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Originally Posted by pawscal View Post
I tought v2 and v3 nozzles were NOT interchangeable? one being longer than the other. Can someone confirm this.
The nozzles are the same length. You will notice that CA for instance doesn't make version-specific nozzles; they are gun-specific. I've been out of the AEG scene a lot lately so I don't know how the other manufacturers are doing it.

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Andrew, all you need is some long 45-rounder style 5.45 mags and you'll be pimpin in style!
That's the plan!
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Old May 25th, 2008, 13:17   #44
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Any tips on how to get the mag into the Unicorn? I'm practically chewing up the mag trying to get it to fit in properly, but it still hangs loose.
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Old May 25th, 2008, 13:19   #45
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Never mind, after trying it a hundred times it finally fit in!
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