I saw a review of Cyma's CM028 - AK47 replica. And I thought I must write here something, because the review is bullshit. But what to expect when the replica is reviewed by someone who sells them, not by someone who only uses replicas!
Around 2:12 the guy says the following:
Not only will bigger and more powerful battery increase the rate of fire (...), also increase the range and accuracy up to 5 to 10 per cent.
Come on! The only thing that changes when you supply 9.6 volt current instead of 8.4 volt is the engine speed. The engine revolves faster, the gears in gearbox revolve faster, the power spring gets compressed faster. But the energy delivered to the piston by the spring does not depend on how fast the spring was compressed! So no matter what battery you use, the amount of compressed air that will push the BB through the inner barrel remains the same.
Well... there may be one case when it isn't the same. If you connect 12V battery to stock replica, the engine may try to compress the spring when it didn't decompress itself fully. The engine may revolve so fast that the next gearbox work cycle will start before the piston reaches the cylinder head.
This is the review of my Cyma AK-47S replika. I wrote it because I believe there is still some place on the internet for articles about cheap airsoft replicas. Cyma replicas are certainly the cheap ones. I'd say, they're on the second shelf, while the first shelf are Tokyo Marui, Classic Army and similar priced replicas.
I read a review written over a year ago, followed by long thread of replies on one of airsoft discussion forums. The thread author wrote:
I found the CYMA AK on airsplat some time ago, and believe me, I was as skeptical as you. (...) A less informed friend of mine who is getting into airsoft (...) bought one. I expected him to receive it and immediately be sorry with his purchase--surprisingly, it wasn't the case. Upon arriving for our game that day, he showed me the AK. I was shocked upon picking it up to discover how heavy it was--it felt like a real steel AK from the weight. Also, I was surprised to notice the gun was almost all metal--in fact, ALL metal except for the grip, handle and stock, which were shockingly decent feeling plastic. Then I figured, what the heck. It looks good but will shoot like crap. Not so! I was VERY surprised when I was hiding behind a tree about 40 feet away from my friend (...) when suddenly a barrage from his AK ripped through the branches and demolished me.
I won't agree that Cyma CM028 is able to break tree branches. Nevertheless, I agree that most of serious airsoft players year ago wouldn't consider purchasing Cyma's replicas. The manufacturer's name was known as a definition of poor quality.
But the replica I own is supposed to be cheaper copy of Tokyo Marui replica! It has metal gearbox, plastic body and metal hi-capacity magazine! With the replica you get the hi-cap mag, stick type 1,100 mAh battery (I got S version with folding stock) and a battery charger! This means, that you need only the replica, BBs and eye protection to have airsoft fun! Standard Tokyo Marui replica comes with low-cap magazine, with no battery or charger. The player had to buy battery and charge it somehow. This makes thisCyma replica a good bargain!
What about muzzle velocity? There are two generations of Cyma AK-47 replicas on market. Mine is from first generation, an exact copy o Tokyo Marui replica. It is supposed to have something around 290 fps on 0.2g BB. I use 0.23g BB, and had 266 fps on chronometer. The replicas from second generation are said to have 360-380 fps muzzle velocity. They still cost in Poland somewhere around $150. :D
The guy quoted at the beginning of my article is wrong. The replica has plastic body, and plastic (wood imitation) grips. They imitate wood really good, I must say...
The hopup is easily adjusted. The sight can be adjusted as well. One can adjust it to aim higher - in the real-steel version this was used for shooting long range. In airsoft I use this feature if I adjust the hopup for long range.
Here are two video reviews I found on YouTube. :)
This article will start "my replica reviews" series. :)
