Mechbox Anti Shock Kit

[Tirador]

Hi Everybody,
I would like to share this new innovation in Airsoft.



ARS (Airsoft Research Syndicate) Japan has released the MASK pistonhead, otherwise known as the Mechbox Anti-Shock Kit. It is made of Polyoxymethylene (POM), in the USA also commonly known under DuPont's brand name Delrin. Its an engineering plastic often marketed and used as a metal substitute. Delrin is a lightweight, low-friction, and wear-resistant thermoplastic with good physical and processing properties and capable of operating at high temperatures (http://en.wikipedia.org/wiki/Delrin).







(MP7 Piston head - Image taken from www.airsoftextreme.com)

The MASK piston head's design was derived from LAYLAX's MP7 pistonhead. It is devised to work with the ARS sorbo pads to maximize shock absorption and achieve the ultimate in gearbox protection. A Sorbothane (http://en.wikipedia.org/wiki/Sorbothane) "tablet" is embedded onto a 2.95mm deep crater and rises only at 0.5mm, enough to act as the first surface to impact the cylinder head sorbothane damper. In theory, the surface would work as a "sponge" that will absorb the shock and distribute the impact into its core without compromising the angle of engagement between the sector gear and the piston body.

The MASK also uses a white Silicon O-ring as a standard.




Cheers,

T
www.airsoftresearchsyndicate.com

[infected]

Well, I already use the Prometheus Piston head (POM), and sorbothane combo... and I spend less than $19 for that.  How much is this little gem?

[RiotSC]

Hi Tirador,

Welcome aboard.    A number of us have been following your product development on ASC for quite some time.  Glad you can join us here too.

One concern I have is with the structural design of the piston head.  If you followed the usual piston head production process, there would be very little material supporting the ported face portion of the piston head.  (i.e. the o-ring channel was turned on the lath until it reached the piston face porting positions.)  That leaves about 1mm wall thickness between the center Sorbothane pad recess and the o-ring channel.  I just worry that such support would be insufficient in a setup with heavier springs.  Once the inner Sorbothane pad fully compresses, the actual piston face would have to endure at least some of the impact force as well.  Since there is no material directly underneath except the o-ring, it would not be surprising for the face to flex/warp with the central supported region as the pivot point.  With enough repetitions, it could lead to failures.

Of course, this is entirely hypothetical.  Perhaps the air pocket created during the initial pad on pad seal is sufficient to cushion even high rate springs.    Do you have any user reports on the performance when paired with > 1 Joule setups?

Well, best of luck with the products, and I hope we will see more innovative items from you. 

[Tirador]

Thanks for the warm welcome RiotSC.

From the crater of the piston head, I left 1.5mm that holds the entire head surface.
1.5 mm thickness at 15 mm in a circular form with sorbo pad is capable enough to hold the entire piston head without collapsing.

side view drawing.


As you can see, in the red line area, a 3mm x 12 mm sorbo pad is attached where the initial area of impact is occur.

When firing with a bbs.
In the moment of collision, the air will cushion first and then the sorbo pads (both piston head sorbo and cylinder head sorbo) will absorb the energy from the impact and finally the piston head touches the cylinder head. So only minimal stress in the piston head surface even at several repetitions.

before I released this product. lots of samples were distributed to different countries and tested it with over 1 J springs. so far I haven’t heard any negative feedbacks .

avoid dry firing specially for above pdi 190% or m150 springs.

Thanks

Well, I already use the Prometheus Piston head (POM), and sorbothane combo... and I spend less than $19 for that.  How much is this little gem?

Im afraid if i will post  prices here, moderators might kick me out, this is not a buy and sale section.
Lets talk in Private Message (PM) for any business transactions.

Thanks

[philosopher]

Welcome aboard!

+1 for Tridor  --  He is the person from whom I purchased my blue Sorbothane pads.   I paid $31 (including shipping) for 5 round pads without pre-cut holes.  The package arrived very fast and Tridor even tossed a few extra goodies into the package for me.  I was extremely happy with my purchase.  THANK YOU again Tridor.

CLICK HERE to see the piston head I modified with his pads.

Tridor, If I believe this is RiotSC's forum, so you don't have to worry about posting prices if he asks you to do so!

EDIT:
Tridor, I have a few questions for you:
1.  Do you have these available for bore-up applications?
2.  Why did you choose this silicone o-ring over a different material?

Peace and grease
-philosopher

[Tirador]

Tridor, I have a few questions for you:
1.  Do you have these available for bore-up applications?
2.  Why did you choose this silicone o-ring over a different material?

Hi Steven,
your welcome and it's a pleasure to deal business with you.

I just checked what you've done in the sorbo pads. I like the vent holes you made in the piston head pad.
excellent job mate.

regarding in your questions.

I chose the silicone o-ring over the NBR o-ring  because its softer and seals very well. It also slides very well in the cylinder wall with only a thin coat silicone grease though the durability is not as tough as the NBR o-ring. We are now developing and molding our own size of urethane o-ring and NBR o-ring which is 2.+ mm x 19.+ mm. stay tuned for this.

for the bore-up piston head.
as of now, we are concentrating on the standard size piston head only since it is the most commonly use.

Thanks,

T

[The Red Ferret]

What really needs an overhaul is the compression system. Better porting style on the piston head, tapered/partly tapered cylender, maybe even cylinder head valve system. IMO there is quite a bit of possible FPS and ROF lost in most gearboxes.

[JamtriX]

suggestion:

maybe a further improvement for the POM piston head is a metal insert for the screw just like Guarder's..

[Whiskey11]

Or for that fact piston heads with the 6mm or so required to achieve proper Angle of Engagement, or at least the Suborthane pads to accomidate that.  It looks like on the Cylinder head they have it's recessed into the head, which is kind of unique, but at the same time concerning as I'm not sure you'd achieve the proper AoE.

I agree though, a good independent manufacturer that can release us a Piston + piston head combo worth a hoot and have the proper AoE in the "standard" set ups would be phenominal.

This does have me curious though as to what the effects of building a proper Piston with Pistonhead permanetly attached and designed well enough to not have to adjust the AoE.  It would solve headaches, lots of them!  (it would suck if the piston head or piston ever broke but it's a novel idea dontcha think?)   

[mamba]

This next gen MASK arrived on british soil.  It is great to compare it on a global scale.  How they behave on different parameters (like the temperature) and set up.

[Tirador]

Or for that fact piston heads with the 6mm or so required to achieve proper Angle of Engagement, or at least the Suborthane pads to accomidate that.  It looks like on the Cylinder head they have it's recessed into the head, which is kind of unique, but at the same time concerning as I'm not sure you'd achieve the proper AoE.

I agree though, a good independent manufacturer that can release us a Piston + piston head combo worth a hoot and have the proper AoE in the "standard" set ups would be phenominal.

This does have me curious though as to what the effects of building a proper Piston with Pistonhead permanetly attached and designed well enough to not have to adjust the AoE.  It would solve headaches, lots of them!  (it would suck if the piston head or piston ever broke but it's a novel idea dontcha think?)   

Hi,
Im in the process of making a new design of piston head which is thicker compared to the stock one for AoE.
please stay tuned for this.

cheers for the input.

What really needs an overhaul is the compression system. Better porting style on the piston head, tapered/partly tapered cylender, maybe even cylinder head valve system. IMO there is quite a bit of possible FPS and ROF lost in most gearboxes.

MASK piston head is ported with 6 holes and we have already changed the white oring to black NBR oring for  better and consistent air compression.
Thank you for your suggestions.   

suggestion:

maybe a further improvement for the POM piston head is a metal insert for the screw just like Guarder's..

Hi Jamtrix,
The problem on puting metal insert is the cost. it will add an extra production cost. if we do this the price of the  MASK piston head will increase.
anyway,we will do this in the near future. thanks for your suggestions.

[luni]

Nice to see you are considering the community's input and acting on it! Can't wait to see your future products.

[mamba]

Review on MASK on 2 different GB set up (450FPS semi locked and 350FPS at 25-30ROF) during the winter months and summer months. Each set up had consumed 1000 rounds of .3 and 20,000 rounds of .2, split up at 2 different time of the year.  I started this test last December where temperature drops down below zero and concluded last Saturday (4th 0f July) where the temperature reach its highest peak at 33 degrees centigrade.  During my winter testing I've used a SP130 spring for my 450FPS set up and SP100 for my 350FPS set up.  Then just recently I've downgraded to SP120 and SP90 respectively.  Reason being, the original set up during the winter months was firing on UK legal FPS limits for AEG based sniper rifle and AEG's.  Then came the summer months where everything went off the roof from my original set up, the SP130 set up was firing 470-480fps and the SP100 was firing between 370-380FPS, a massive 20-30FPS increase on power.  I have applied the same airsealing technique on both set up on 2 different season of the year.  There is only one explanation, during the summer months all the O rings from cylinder head, piston head, airseal nozzle had fully expanded plus your hop up unit, precision barrel airsealing technique thus creating the perfect airseal.  I was very impress how the MASK performed, after all my brutal testing, still intact.  The reinforced sorbo pads were holding just fine.   And one more thing it is much quiter compared to the silent heads(I got 2, Guarder and CA to compare) offered in the market today.

Set up
1.  G&P SAM R
2.  Prometheus 6.03 550mm precision barrel
3.  G&P 8mm bearing GB with 2 different set up mentioned above.
4.  Extreme fire Cheetah.

It gives you an excellent AOE for those Hi ROF set up!




Here is it now after 6-7 months of brutal testing!


There was no apparent wear and tear.


In great shape,


Testing takes time and with different parameters,  I now therefore conclude,  this is the best for our set up!