NLAIRSOFT.COM

GunFire.pl Airsoft & More...
TaiwanGun.com Poland

Apr21

SYSTEMA PTW Gearbox

Introduction
The SYSTEMA PTW gearbox is very unique and innovative. Many wonder how the SYSTEMA PTW works and how the new gearbox type looks like. So we have made a closeup on this planetary gearbox to show how it is made. This will provide you some details and insights on this great piece of mechanics. This is the way SYSTEMA puts it:

    Quote:

    "Revolutionary implementation of the planetary gear box allowing the weapon to operate smoothly and reliably under high internal stress, while reducing the overall package dimension.

    Compared with the conventional reduction mechanism with three shafts, the planetary gear has only two shafts, allowing for a more compact mechanism. The planetary gear, which originally had three gears, was redesigned to have four in order to provide higher durability for the thrust load when using a high-rate spring.

    Due to this effort, we succeeded in reducing to the greatest possible limit the backlash caused by the gears biting each other, resulting in realizing the best in transmission efficiency.

    "


The gearbox installed in the lower receiver...


We start with a picture of the gearbox compared to a box with matches so you could understand how small it actually is.


As you can see the gearbox is just a little larger...


When opened you are able to see how compact and small everything is. This is the MAX gearbox from the PTW challange kit also named "do it yourself kit". This gearbox is practical the same to all PTW gearboxes out there. In total the gearbox includes 28 parts! Please find more information in the exploded views we included at the end of the review. This particular MAX gearbox is made to withstand a 160m/s spring and almost NO maintenence needed. Many new to SYSTEMA PTW ruin their gearbox by adding grease/lubricate because it looks dry. The problem is that the gears are so tight made together that thick lubricate would blow the gears or make it very hard to turn and blow the fuse/melt curcuitboards. So no further lubrication is needed, please be carefull with that!


Taking a closer look on the gears you would notice that this is really nothing like a regular Ver2 AEG gearbox.



Gearbox stripped down...


Operation
When looking from this angle I would try to explain the operation of the gearbox. To the left you got the curcuitboard EL-001 and got a switch for the trigger. It also got a photoswitch that check the position of the main gear so it would always return to normal position. The two holes in the main gear is for the photoswitch to see trough. Top left you got a white switch that is connected to the bolt catch. When the magazine is empty it press out the bolt catch and stop firing. When inserting a new full magazine you have to tell the electronics to restart so you could fire again and do this by pressing in the bolt catch that again press the switch. BTW!!.. The KUMI stamped in the gearbox is the name of the CEO in SYSTEMA :) Further not of any importance...


Right side of the gearbox...


On this side you can see the electronic controle of the semi/auto/burst with the selector switch. The EL-002 got two microswitches. When the selector is set to safe the selector arm is to the right with no contact to the switches. When set to semi it press down the first switch and tell the electronic to fire one and one bb. On auto/burst the arm press down both switches and telll the circuit to do auto or burst after what type of EL-001 you got. If you want to lock to semi only you could either restrict the arm only to go to the first switch or you could remove the cable to switch two.


Left side of the gearbox...


On top of the gearbox is a hole where the firmnes of the selector is adjusted. First there is a bearing ball laying on the selector switch. the selector switch got 3 dents on it where the ball would press down in for each selected Safe/Semi/Auto. You adjust how hard the selector should feel by adjusting the screw on to the spring that press down the ball. A nice function to set the firmnes of the selector to your own preferences!


Details on the selector switch...


Manuals

Download here the PDF document with exploded drawings of the gearbox. You will find part information also...

External links

www.zshot.com (SYSTEMA's PTW USA website)
www.systema-ptw.com (SYSTEMA's PTW community website)
www.systema-engineering.com
Apr21

TM Ak47

Intro
Ever since I have been into Airsoft, I have always wanted an AK-47. It is a gun of every single major war in the last 50 years, featured in nearly every action movie, and just looks cool. When I finally moved from springer guns to AEG’s, the AK-47 was my natural choice for a first gun. I had heard it was a sturdy gun, just like the real steel, shot fairly accurate for a stock gun, and had a nice high capacity clip.

First Impressions
When you hold the AK-47, you feel a nice solid gun. There is absolutely no body flex to speak of. The gun has a high metal content, and the fake wood is simulated very well. On the full stock version, the version tested for this review, the large battery is held in the butt stock. There is plenty of room in there for an 8.4v battery, but do not expect to fit any 9.6v battery over 1600mAh in it.



There are not many trademarks to speak of, but that is because there have been so many manufacturers of the AK-47 over the last half century, that even half of them don’t have trademarks. There is, however, writing is Russian on the gun. On the selector switch, the different firing modes are written in the Cyrillic alphabet.


Weighing in at around 5lbs., this is a fairly heavy assault rifle. The length is very long at 875mm, not a CQB weapon at all. The size comparison between it and a P90 can be seen in the figure.

The Hop-Up is the easiest to adjust in any AEG I have ever seen. You simply pull back on the dust cover, and move a slide. Pull it back if you want it to go up, push it forward if you want less hop-up effect.

Accuracy
For the accuracy portion of the review I used Airsoft elite .20g bb’s and a Sanyo 8.4v 1500mah Battery that has been fully charged.

The first test I wanted to see how it grouped with single fire mode. As you can see in fig. 6 that the accuracy is ok, not the best but not too bad either. The grouping turned out to be just about 1.2 inches on average, not bad at all.

On the figure you can see the results of full auto fire of the AK-47. The grouping is still not bad and it even has a shot in the very middle.  Overall I find the accuracy of the AK-47 very good, very pleasing, and compared to other Guns, it’s above average.

 
Power
Like all Tokyo Marui AEG’s they all seem to have the same fps no matter what the model because they all use the same stock internals. The AK-47 is no exception. As you can see in the picture, the average fps I got was 268, normal for most AEG’s. Please note that Marcus’ AK-47 is almost 2 years old, and to maintain this power in such a long period of time is astonishing.

 
Conclusion
Overall, the Tokyo Marui AK-47 is a great gun for beginner and veteran alike. I have had my AK-47 for about two years completely stock, and not a single thing has gone wrong with it. If that is not durable, then I do not know what is. There are not as many accessories for the AK-47 compared to other guns, but there are still a few. You can get, for instance, an RIS, scope mount and double magazine holders for it, but if you want a highly accessorized gun that has a ton of after market parts, then get an M4A1-RIS. If you want a gun that is durable, has a fast rate of fire, not a run of the mill at many fields, and with a very high capacity clip (600 rounds), then the AK-47 is the gun for you.  I will write a follow-up when I get the gun upgraded, and perform the same tests. Until then, good luck on the field.

UPDATE:Here a little update from Maxim Baele, which reports that he is succesfully using a 9.6V battery pack in the TM AK47. This makes the replica a lot more attractive. He is using a medium-type 9.6v 2200Mah from Begadi. He did minor change on the batteries and they fitted perfect. So take this into consideration guys!

    
    
Do you like the new design of [NL] Airsoft.com V3?
Yes
[tally] 83%
No
[tally] 17%
votes: 18     


Hosted by
GJ-R.NL
Apr21

TM M-14

Tokyo Marui M-14 - Made by Airsoft Extreme





Introduction
The new Tokyo Marui M14 comes in two (2) variations, one of which is a imitation wood stock and the other is a synthetic olive drab stock. The OD M14 comes in an OD box and the imitation wood M14 comes in a brown box.



Appearance
The fit and finishes on rifles are attractive overall and properly reflect Tokyo Marui’s high production standards. However, the guns do have bit of a toyish feel and appearance to them, especially versus the other make Airsoft M14’s on the market (i.e. G&G and Airsoft Club). The OD stock has an extremely smooth texture overall with some checkering where the gun is normally held for a more "tactical" feel. It is also a little on the shiny “toy” side in appearance. The imitation wood finish is not as realistic as that of the Marui Thompson or AK, but it is very close and still very attractive and realistic. The stock in general also feels and looks a little bit narrower/smaller than that of the G&G M14. Also contributing to the small feel of the TM M14 is its lightness in weight versus the other make M14’s. On the other hand, the metal component finish is very well done. The receiver and barrel have a nice realistic looking flat matte finish. The magazines have a nice parkerized gray finish which look just like the real steel version. Some players might prefer the realism in size, feel, appearance, and heft of the G&G M14 over the TM M14. However, the lighter weight and slightly less than authentic appearance and feel of the TM M14 does not mean a lack of quality, effectiveness, or ruggedness by any means.



Here is the Olive Drab (OD) version.



And here is the Wood pattern version.



The safety switch works just like the real one but is not as stiff as the real version or the G&G model. It is extremely easy to "flick" on or off. This does not translate into problems since the switch "clicks" into place and does not just fall into place.



The barrel and flash hider are very detailed and look extremely realistic.



The markings on the rifle are very true to spec.



The sight picture is very crisp looking and will make acquiring your target an easy task.



The TM M14 standard magazines look hold 70 bb’s like most Marui standard magazines. Unfortunately, the G&G magazines are not compatible with the Marui model and vise versa.

Performance
The overall performance is impressive and is almost expected from Tokyo Marui. The gun sounds very smooth and fires a very unexpected 310-320fps with a 0.20g Excel BB right out of the box. Immediately, this rifle has the highest fps out of the box of any other TM AEG. The stock gun delivers a nice 700 rounds per minute with an 8.4v source and draws 11AMPS on full auto. Firing the rifle on full auto feels very nice. The trigger is very responsive and the report is very crisp. The gun does not deliver a loud snap like other TM guns, but it is not super quiet like an AUG or P90. The selector switch feels great and is very responsive. You know when you are in semi as well as full auto and the selector is a bit easier to manipulate than the G&G model. The one feature that the Marui model lacks from the G&G is the selector switch does not release the anti reverse latch by pulling the selector switch back.



The bolt does pull open all the way, unlike the G&G model, and makes a very satisfying metal on metal clink when let go. Unfortunately, it doesn't lock open with the bolt catch like the G&G model does. Oh well, I guess you can't have it all. Also, you will notice, there is no hopup adjustment in the breach like the in G&G M14 (continue reading for further details).



Unlike most TM guns, the hop adjustment is not located in the breach like you would expect when opening the bolt. The M14 has the hopup adjustment knob just in front of the mag well as seen in the picture above. It can be adjusted with the magazine in the gun, so no fumbling with the mag when attempting to adjust the hop. The knob makes a nice click with each minor adjustment so tuning the hop is very precise. I tested this and the gun fires straight for more than 100 feet stock with an Excel 0.20g BB (non Bio).



The small hole you see in the photo on the left is actually the motor height adjustment. As you can see in the middle picture, this is the motor and that round part is where the actual motor height adjustment screw is set into the motor housing. And finally, on the right you can see the angle the motor heightening screw must take to adjust the motor. The highlighted area shows a small gauge built in to see how far you have adjusted the screw. This is set in the middle on this particular gun.



The battery compartment is located in the stock as we all would expect. The one thing we didn’t expect would be the lack of space for a large 9.6v battery. The gun can only fit an 8.4v standard large battery or one of AEX's custom 9.6v 1700 custom large batteries that we use for AK-47's. The stock butt folds up like the G&G model and the door opens to the side rather than down like the G&G.



The gun field strips somewhat like the G&G model, but the actual trigger does not separate from the gearbox like the G&G model. This is not as realistic as the G&G, but it actually makes for a better design as the trigger functions are much better.



After the initial tear down, the upper receiver must slide forward as the lower slides to the rear as seen in the upper right photo. Once you have done this, the upper receiver can lift off the lower.



Here you can see the upper lifting off the lower receiver.



Once the upper is removed from the lower, you can unplug the wires like all TM AEG's with rear battery wiring. The one thing you need to be careful with is the small plug can get caught inside the stock and making the removal of the upper a real pain. The motor wires are also connected like the standard Marui motor connectors.



Here is a good side view of the short type motor.



This is the left side of the gear box. This is where the cutoff lever and the electrical trigger contacts are located. This is the most complex gear box I have seen. This makes the old Sig 551 and 550 a breeze!



On the flip side of the gear box, you can see the selector plate and electrical contacts for the safety switch. Unlike most AEG's, this safety will physically disengage the electrical current and block the trigger so there can be no accidental misfires. But never use that as an excuse to point this at a person while not playing in a skirmish.



Removing the barrel is much more difficult than the G&G rifle and more complex than most AEG's. I thought the TM MP5's were time consuming to change barrels, but this one takes the cake. As you can see in the three photos, you must exercise caution when attempting to remove the inner barrel. First, slide it forward, then angle it up and then it will continue to curve up and out. If you are not careful, the plastic is not the most rigid so it could break.



The hop unit has its own design and is not like any other AEG. The arrow pointing to the base shows how the hopup functions. The lever goes up and forces a lever downward on the top of the unit giving the AEG it's hopup. It is a very simple yet effective design. This allows the adjustment to be made from the base of the rifle and thus making the adjustment simple and precise.



The new gear box is truly simple once it is opened. Much like a Ver 6 it is very basic with an all new type of cylinder, cylinder head, nozzle, tappet plate and spring guide. The cylinder is a bit longer than the regular TM cylinders by a couple of millimeters but piston and piston head are the same as all TM AEG's. The sector gear is just like the Thompson and is smaller than the regular middle gear so Systema gears would not work directly with this new gear box since the regular size gears would hit the piston. The stock spring is slightly thicker so the stock velocity is a bit stronger out of the box. The tappet plate spring is identical to the Ver 6 setup and lays under the tappet plate just under the cylinder. The spring guide looks like a Ver 3 but with slightly longer and thinner posts. So when upgrading this model, you must use extreme caution not to break these parts as there are no replacements at this time.

The biggest flaw would be upgradeability due to lack of parts at this time since the parts Marui developed are all new and so unique. We did install a Systema M120S spring just to see what kind of velocity this baby would push. We did not re-shim or install metal bushings, just a simple spring drop in. The results were pretty much what we thought, just a bit below our expectations, but nothing to complain about. The gun fired 410-415fps with an Excel 0.20g BB (non-bio) and had a nice rate of fire with an 8.4v source. It had a 14-15 AMP draw on full auto and shot approximately 600 rounds per minute. With a 9.6v source the rate of fire jumped up to approximately 800 rounds per minute. We tested the range and we were happy to see the gun could reach over 160 feet in a nice straight path. I was able to hit a pole the size of a human torso (a thin human torso) at 180 feet with the hop adjusted using the iron sights. It was most impressive. There was a slight breeze so the BB did curve at the last few feet but it did not drop. The path was pretty straight given I was using a 0.20g BB and firing into a little bit of wind.

Overall
The Tokyo Marui M14, despite certain aspects that make it less than realistic than the G&G M14, has the look, the feel and the performance that make it an excellent AEG. The only other downside currently is the lack of internal upgrade parts at the moment and the degree of difficulty in taking the gun down. The TM M14 has a much more complex breakdown than most AEG's that we have seen in a while. Overall, the performance for a stock Marui gun is outstanding and the attention to detail is excellent.

Final Grading
Quality:
Reliability:
Comfort:
Externals:
Performance:
Value:
Over-all:

External links
www.tokyo-marui.co.jp
www.airsoftextreme.com
Apr21

TM SIG 552

Introduction
Tokyo Marui has done it again, and this time they didn’t make another variant of a Colt (Thank God). Marui has decided this time around to continue an old series the sig. With the old SIG’s failing and many problems documented, Marui went back to the drawing board to make a new SIG, the SIG 552. Hoping this time it wouldn’t fail like the rest of them.

History
Back in 1997 when the SIG series was created by Marui, it seemed like a sure hit. It was different than all of Marui’s AEG’s, it sported the coveted 3 round burst. Although it seemed like a sure hit, it wasn’t. Taking down the gun was a hassle, the internals were of low quality parts, the stick battery made upgrading a hassle, not to mention limited to low capacity shooting, and the three round burst has been known to blow the fuse. It almost seemed like Marui rushed in creating the SIG, thus leading to many consumer complaints, and leading to the discontinuation of the production of the SIG series. Fast Forward 6 years later, and Marui attempted to try the SIG series, this time trying a tried and true formula of the reliable Version 3 yet again, and removing the 3 burst function. But is the wait worth it? Let’s find out…

First Impressions
At first glance, the gun is smaller than I thought. Holding it is very comfortable like most small guns similar to the MP5 series. The front barrel is very short, giving this gun a CQB feel, if you are looking for a field rifle this may not be the right gun for range, but more likely a gun that is used for close quarters.
The stock is like your average Marui stock. The folding stock is a great addition to the gun, making the gun really short and maneuverable.

The charging handle is a nice addition to the gun, as you can see in the picture is an actual handle like the AK-47 series, making it easy to access the Hop-up unit.

 

The hop unit is similar to the AUG hop unit, a rolling adjusting hop-up. I prefer the AK-47 hop-up unit, but I guess this is ok and easy to adjust.

 

Removing the hand guard to put the battery is a snap. Simply take out the pin, pull back the bottom hand guard, and the top removes easily. Although Marui recommends using the new s-type battery for the SIG 552, I see no reason for buy a mini that has a Marui label on it. Instead, a regular mini 8.4v 600mah battery will suffice and fits perfectly as seen in the picture.

 

 

 

Now here is something new, the loader. The loader is the most innovative loader I have ever seen. All you need to do is load it like a hicap, put it in the standard mag hole and push down the button until it is loaded, kind of like a plunger. I only wish Marui would sell these separately, as it is more innovative than the SIG 552 itself, and not to mention a lot cheaper than buying an electric auto loader

 

.

 

 

 

The magazines, including the hicap has the capability of putting themselves together, for easy reloading, with out buying a separate dual mag clamp.

 

 

The trigger guard is an innovative thing. It can easily be flipped up for when you wear gloves, and closed when you are not. No tools required to flip up and down the trigger guard.

 

 

 

The sights are very similar to the sight of an MP5, but a little cooler. The front sight has 2 modes, I am not sure if you can see it but the middle part can be flipped up to be ticker, which I believe is for longer range, and the thin one is for close quarters.

 

 

The back sight are adjustable like the MP5, looking in a small hole and aligning it with the front sight.

 

Like most new Marui guns, the Flash hider can be easily removed so you can add a silencer or tracer unit.

 

The rail on the gun allows the option of putting the PEQ-2 Laser box, for using a larger battery and the laser can be easily adjusted and zeroed from the side.

 

 
Testing

 

In testing I used a hicap and the standard, a fully charged 8.4v 600mah battery, and Airsoft Elite .20g bb’s

 
Accuracy
Out of the box the gun’s hop up isn’t set well, which would explain the crappy grouping I have. But once adjusted the average grouping is a little under 1 inch, a definite plus.

              
Power
The power is above the average FPS of a Marui gun. 284.6 fps being the high and 276.3 is the low. Not bad at all.

 

             

                        Low                                                                 High

 
Comparison
Comparison to other AEG’s, it is very small. It’s about the size of the g36c, but a little smaller. But compared to the G3 SG-1, the difference can be seen.

 

              
Overall
Marui has done it again, and this SIG is a great gun to have in your collection. The version 3 gearbox makes this gun shoot super smooth, and the rate of fire is great with eg1000. The gun really has no outstanding flaw, as expected from Marui, except for the exception of the small battery compartment, which can be easily solved the PEQ-2 Battery box. We have yet to upgrade the gun, and I will update you when we do. But so far Marui has made a successful SIG.

The Keeper (Dexter)
Dec16

VASSILIKOS

VASSILIKOS

<<  92 93 94 95 96 [9798  >>  

GunFire.pl Airsoft & More...
TaiwanGun.com Poland

Copyright 2002-2016 NLAIRSOFT.COM | All rights reserved.

Top Desktop version