Nine Ball Dyna Piston Head

[isparkthela]

Hello-
I have a TM M1911a1 that has been upgraded with the Guarder metal slide and frame, enhanced recoil spring & high flow valve. All of which has been installed by UN Company.

I am looking at buying the Nine Ball Dyna piston head, but I have seen other threads that have indicated problems due to installing the Dyna Piston (specifically the stiffer floating valve spring supplied with the piston). Can anyone else verify this? The gun performs perfectly and I would hate to screw it up by installing this piston, but I have heard the Dyna Piston is an excellent upgrade.

Would I need to upgrade anything else? Or is the Dyna Piston a drop in part? Thank you all for your help!

[ILLusion]

I can verify that you may experience problems with the stiffer floating valve spring. About 80% of the guns I install the spring in to will cause excessive gas consumption and weak blowback.

The piston head itself is a good upgrade, though. Nothing else required - it is a standalone drop-in.

[isparkthela]

Thank you for your reply! Is there a fix for this problem? Is there a way to maintain standard gas consumption and blowback? If I leave in the stock floating valve spring, will this cure the problem? Is the upgraded spring necessary to install?

From the research I have done, I did not find any information on how much this piston will increase velocity....do you know of an average increase? Do you recommend this piston or is it not worth the hassle? Once again, thank you Illusion for your feedback!!!

[ILLusion]

the fix is to use the stock spring. The 9ball version is not necessary. I've noticed it seems to only work in heavily upgraded guns.

The piston itself does not really increase velocity. The spring does. I recommend this piston and use it whenever I get the chance.

[isparkthela]

So, there is no real performance gain by using this piston? Seems like this is a high stress component, is added durability the only gain? Thanks!

[m102404]

The stock piston runs fine in a lot of pistols with stock parts. A lot of aftermarket parts offer durability and consistency enhancements.

But when you upgrade one part, you often find that the fit with another existing one is less than perfect. For example, when I broke my stock TM loading nozzle I swapped to a Shooters Design POM unit. It worked great...but the piston head wasn't sealing well with it. I tried a 9 ball one and it was too tight. I swapped the o-ring on the 9 ball one and it worked well.

So...did the piston head provide a substantial upgrade...well yes and no. No...in that I didn't need it in the first place. But yes...in that it made my pistol work really well in the end.

A piston head that seals well will enable your pistol to more effectively use the gas that's being pumped into it. It doesn't release more gas per shot...it doesn't "make" the bb go faster. But less gas is leaking/wasted so it's enabling the pistol setup to do as much as it can. Potential enabling...(corny business term).

Pistols are a balance of all the parts put into it...and your expectations have to be in-line.. You shouldn't just dump on a mega-butch heavy slide and expect a stock pistol to perform well...it'll be sluggish and really take a pounding. Like wise, you shouldn't just put in a 200% hammer spring and expect your pistol to run like a champ and shoot through plywood.

In short...yes, it's a great upgrade. You should get a little performance boost (more likely in how fast the slide cycles)...but you may not notice anything. It's fancy and red...so that's always cool

[isparkthela]

Thank you for your explanation!

My expectations are to have a pistol that will consistently function properly time and time again. I understand there are components that will fail due to standard use and there for need replacement. I was hoping to eliminate and or reduce the amount of those types of components with “upgraded” parts. That was my intent with the Nine Ball piston. I wanted to remove the stock part which has a higher potential to fail and replace it with something more reliable. But now, I am beginning to think “if it ain’t broke, don’t fix it.” The problem is, I would rather deal with these types of issues before they happen.

When you say you swapped the o-ring, did you switch it with the other o-ring supplied with the Nine Ball piston? Or did you have to search elsewhere for a different o-ring?

I have one other pistol and my experience with it has not been great. I noticed a majority of the problems were with the blowback unit, mainly the loading nozzle. So for my 1911, I was hoping to reinforce this area of the pistol so I don’t have as many of those types of problems. I am relatively new to the world of airsoft and I appreciate everyone’s feedback and advice, thank you!

[m102404]

I've got lots of o-ring on hand...I just swapped them around until I got a good fit. Hardware stores usually have a broad selection.

I've got a SD Nozzle in all my Hicapas...so far, for me, they have been indestructable.

The 9ball piston head is great. Just not always necessary.

[ILLusion]

The 9ball piston head also comes with a smaller o-ring.

[isparkthela]

Do you know of a good loading nozzle for the TM 1911a1 that is a good fit with the Nine Ball piston?

[ILLusion]

airsoft surgeon

[isparkthela]

Do you have a link you can post as to where I can find a Airsoft Surgeon nozzle? I could only find an Airsoft Surgeon package with the nozzle and other components. Thx

[ILLusion]

http://www.airsoftcanada.com/showthread.php?t=495


Pricing different for international customers. Contact me by PM for your pricing.