Author Topic: G&D PTW ehk 300+ dollarit maksev Sytema PTW?  (Read 7079 times)

Offline Bjorn

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G&D PTW ehk 300+ dollarit maksev Sytema PTW?
« on: October 23, 2012, 12:22:33 »
AirsoftGlobalis on müügile ilmunud Systema PTW hiina koopia. Valmistajaks on märgitud tundmatu G&D nimeline firma. Hind võrreldes PTW või Celsius CTW mudeliga on ahvatlev.

Sisu poolest näib olevat 1:1 koopia. Tulevik ja välismaised airsofti foorumid näitavad, kas on tasuv ost või mitte.
http://www.airsoftglobal.com/shop/index.php?main_page=product_info&cPath=21_374&products_id=15963&zenid=98n2vvsounsvfa6tv2fud2jb52


« Last Edit: November 06, 2012, 10:10:15 by Bjorn »

Offline Bjorn

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Re: G&D PTW ehk 300+ dollarit maksev Sytema PTW?
« Reply #1 on: November 06, 2012, 10:21:21 »
Esimene ülevaade on G&D PTW/DTW kohta väljas Arniesairsoftis. Kes on registreerunud kasutajad, saavad teemal pilku peal hoida siin: http://www.arniesairsoft.co.uk/forums/index.php?/topic/206807-dtw-a-new-cheaper-tw-platform/

Kes ei ole kasutajad, siis copy-paste siia foorumisse ka põhipunktid:


Quote
I'm going to split part 2 into 2 parts. I will have a look at the electrics and gearbox tomorrow and tonight I have had a look at the motor, hop unit and cylinder.

first thing first the cocking handle isn't compatible with the other TW's. The DTW one is heavier, missing the wings and a little bit longer than the other TW ones. I can see that they saved a bit of cost by removing the wings as this saves machining inside the upper receiver. The PTW/CTW cocking handles don't fit inside the DTW upper as the DTW upper doesn't have the gap machined for the wings.

It's not the end of the world if you loose or snap the DTW one as you can use a PTW/CTW one if you cut the wings off.

Moving onto the hop unit and inner barrel. I have used the PTW naming convention on the picture below so if you are reading this and get confused about which part is which then just check out the photo.


A PTW hop unit won't fit inside the DTW. A MDD and CTW hop unit will with a bit of brute force. The reason for this is because the DTW outer barrel has a 22mm cut out for the hop chamber base. the DTW hop chamber base is 22mm, the CTW is 22.2mm and the PTW is 22.5mm. What this means is that if you want to use a PTW hop unit then you will need to swap the outer barrel for a systema one.
If you look at the picture below you can't really tell there is much difference between the hop chamber bases but after measuring them it turns out there is.


The inner barrel diameter is 8mm whereas a PTW/VANARAS/CTW inner barrel diameter is 10mm. This means that the chamber sleeve and inner barrel is unique to the DTW barrel.
the Hop adjuster, roller packing and fit pin are not PTW compatible. This is because the square inner barrel cut which houses the hop adjuster is quite rough and the hop adjuster is slightly larger than a PTW hop adjuster.

I don't know if it's easy to spot in the picture but the hop adjuster on the left is slightly larger.

to clear this part up slightly I will list the hop and barrel parts and say if they are PTW compatible or not.

Hop chamber base - not compatible as the PTW one is too thick
Chamber sleeve - not compatible as the DTW inner barrel is 8mm in diameter
hop adjuster - not compatible
roller packing - more on this below
fit pin - possibly
Inner barrel - the inner barrel along with the complete DTW hop unit does fit inside a PTW.
chamber packing - compatible
chamber packing base - compatible
air seal packing - compatible
adjuster cushion - compatible but looks like a AEG hop up bucking to be honest. It sits side on between the inner barrel and hop adjuster.
barrel key - compatible

If you really don't want to use the DTW hop unit and inner barrel then the best thing to do is replace the outer barrel with a Systema/Celcius/Vanaras one and then the Systema hop unit will fit no problem.
you might have noticed that the roller packing is really thin, even compared to the older PTW roller packing. Once I get a chance to test the hop effect and range I will decide if this needs replacing with a thicker bit of rubber.
I'll also add here that it's not all bad as the DTW hop unit works quite well. The airseal is good and hopefully if there is a problem with the hop effect then replacing the roller packing will sort it out.

Moving on to the cylinder we have some good news. The DTW cylinder is 100% PTW compatible and very well made. All the threads are a match and all the parts are interchangable. the DTW piston is slightly tight on the PTW cylinder sleeve but will loosen up with use.

The only issue I had was my piston head guide was slightly loose and had to be tightened up before it popped off and buggered the cylinder. (if you buy one of these it's worth checking that it's tight).
I popped a PTW cylinder into the DTW, using the DTW hop unit, and fired a couple of mags with no problems. The FPS was constant and the gearbox handled the M110 cylinder with no problems at all. It might be worth mentioning here that a PTW cylinder will set you back £170 whereas if you buy the DTW just for the cylinder you would end up with a whole TW spare for just £30 quid more!!

Lastly tonight I had a quick look at the motor. I'll be honest it's been a while since I buggered about with magnets, E and M fields and all that 3 finger mumbo jumbo. all I can tell is that the motor seems to be good enough to handle the 385 FPS DTW cylinder with no problem. The trigger responce is as sharp as a PTW. after firing around 1500 bb's now the gearbox still sounds fresh, the motor doesn't seem to labour and rapid fire single shots work everytime.


conclusions for tonight are:
The DTW is a very good TW. D&G have cut corners to save costs but so far the cuts haven't stopped the DTW from performing well. It's not 100% completely PTW compatible but this is only an issue if you want to put Systema parts into the DTW and even then it's still possible to do but you need to add a few more Systema parts.
I'll finish off tonight by saying the the DTW has a real "pick me up and shoot me" feel. As I have been mucking about today stripping it, trying differnet parts etc everytime I have rebuilt it I've ended up firing a couple of mags through it just for fun.

Offline Bjorn

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Re: G&D PTW ehk 300+ dollarit maksev Sytema PTW?
« Reply #2 on: November 06, 2012, 10:21:59 »
Quote
I'm going to split part 2 into 2 parts. I will have a look at the electrics and gearbox tomorrow and tonight I have had a look at the motor, hop unit and cylinder.

first thing first the cocking handle isn't compatible with the other TW's. The DTW one is heavier, missing the wings and a little bit longer than the other TW ones. I can see that they saved a bit of cost by removing the wings as this saves machining inside the upper receiver. The PTW/CTW cocking handles don't fit inside the DTW upper as the DTW upper doesn't have the gap machined for the wings.

It's not the end of the world if you loose or snap the DTW one as you can use a PTW/CTW one if you cut the wings off.

Moving onto the hop unit and inner barrel. I have used the PTW naming convention on the picture below so if you are reading this and get confused about which part is which then just check out the photo.


A PTW hop unit won't fit inside the DTW. A MDD and CTW hop unit will with a bit of brute force. The reason for this is because the DTW outer barrel has a 22mm cut out for the hop chamber base. the DTW hop chamber base is 22mm, the CTW is 22.2mm and the PTW is 22.5mm. What this means is that if you want to use a PTW hop unit then you will need to swap the outer barrel for a systema one.
If you look at the picture below you can't really tell there is much difference between the hop chamber bases but after measuring them it turns out there is.


The inner barrel diameter is 8mm whereas a PTW/VANARAS/CTW inner barrel diameter is 10mm. This means that the chamber sleeve and inner barrel is unique to the DTW barrel.
the Hop adjuster, roller packing and fit pin are not PTW compatible. This is because the square inner barrel cut which houses the hop adjuster is quite rough and the hop adjuster is slightly larger than a PTW hop adjuster.

I don't know if it's easy to spot in the picture but the hop adjuster on the left is slightly larger.

to clear this part up slightly I will list the hop and barrel parts and say if they are PTW compatible or not.

Hop chamber base - not compatible as the PTW one is too thick
Chamber sleeve - not compatible as the DTW inner barrel is 8mm in diameter
hop adjuster - not compatible
roller packing - more on this below
fit pin - possibly
Inner barrel - the inner barrel along with the complete DTW hop unit does fit inside a PTW.
chamber packing - compatible
chamber packing base - compatible
air seal packing - compatible
adjuster cushion - compatible but looks like a AEG hop up bucking to be honest. It sits side on between the inner barrel and hop adjuster.
barrel key - compatible

If you really don't want to use the DTW hop unit and inner barrel then the best thing to do is replace the outer barrel with a Systema/Celcius/Vanaras one and then the Systema hop unit will fit no problem.
you might have noticed that the roller packing is really thin, even compared to the older PTW roller packing. Once I get a chance to test the hop effect and range I will decide if this needs replacing with a thicker bit of rubber.
I'll also add here that it's not all bad as the DTW hop unit works quite well. The airseal is good and hopefully if there is a problem with the hop effect then replacing the roller packing will sort it out.

Moving on to the cylinder we have some good news. The DTW cylinder is 100% PTW compatible and very well made. All the threads are a match and all the parts are interchangable. the DTW piston is slightly tight on the PTW cylinder sleeve but will loosen up with use.

The only issue I had was my piston head guide was slightly loose and had to be tightened up before it popped off and buggered the cylinder. (if you buy one of these it's worth checking that it's tight).
I popped a PTW cylinder into the DTW, using the DTW hop unit, and fired a couple of mags with no problems. The FPS was constant and the gearbox handled the M110 cylinder with no problems at all. It might be worth mentioning here that a PTW cylinder will set you back £170 whereas if you buy the DTW just for the cylinder you would end up with a whole TW spare for just £30 quid more!!

Lastly tonight I had a quick look at the motor. I'll be honest it's been a while since I buggered about with magnets, E and M fields and all that 3 finger mumbo jumbo. all I can tell is that the motor seems to be good enough to handle the 385 FPS DTW cylinder with no problem. The trigger responce is as sharp as a PTW. after firing around 1500 bb's now the gearbox still sounds fresh, the motor doesn't seem to labour and rapid fire single shots work everytime.


conclusions for tonight are:
The DTW is a very good TW. D&G have cut corners to save costs but so far the cuts haven't stopped the DTW from performing well. It's not 100% completely PTW compatible but this is only an issue if you want to put Systema parts into the DTW and even then it's still possible to do but you need to add a few more Systema parts.
I'll finish off tonight by saying the the DTW has a real "pick me up and shoot me" feel. As I have been mucking about today stripping it, trying differnet parts etc everytime I have rebuilt it I've ended up firing a couple of mags through it just for fun.