Piston for M150 spring?

[vancouver_sc]

I am running 150 spring setup on a v2, semi only.
Every 3000 shots or so, I have to replace the piston. I've tried: systema, pro arms, classic army.
What should I try next?

[zone 69]

Maybe you can try a full metal piston.

http://www.airsoftparts.ca/store2/in...x&cPath=66_126

And why would you put a 150 spring in a ver.2 box anyways.?
I see peeps have Truble useing 120 springs in ver.2 box's.
The most I will run in my ver.2 box is a 110 spring Top's, but that's me.

[Azathoth]

Full metal piston is terrible idea.

You have only used crappy pistons. I suggest Prometheus Hard, or System Supercore. I'm running Supercore on my Hardball setup and it's been through 10k rounds this year and no significant wear.

Do you put a full metal piston in your gun unless you are going to swiss cheese mod it to lighten it like so:

[VooDooPeteK]

+1 on the Supercore

[HKGhost]

On a heavy spring, you need to set the AOE perfectly so the force transfer from the gears to the piston is even on all teethes. That should help a bit and for a spring that heavy, just use a $20 piston so you're not breaking the bank.

[etd]

Hmmm wouldn't recommend using a $20 piston. The last thing you need is a shattered piston roaming around in your gearbox. I'd strongly recommend using a system supercore piston. I use them in all of my aegs at extremely high rates of fire.

I'd also strongly recommend NOT usig a full metal teeth piston unless it's a one piece cnc piston otherwise you are asking for trouble at that fps. If you decide to go for a one piece cnc'ed piston be aware that the extra added weight of the piston slamming into your gearbox front side may crack the shell.

[HaloSix4]

I've been using the Modify Quantum Polycarbonate Piston w/ Metal Teeth (http://www.airsoftgi.com/product_inf...oducts_id=6854) for a while and never had problems, but that's at only 420FPS, I'll be trying it around 500 or more FPS soon to test how it does.

[Azathoth]

Originally Posted by etd

Hmmm wouldn't recommend using a $20 piston. The last thing you need is a shattered piston roaming around in your gearbox. I'd strongly recommend using a system supercore piston. I use them in all of my aegs at extremely high rates of fire.

I'd also strongly recommend NOT usig a full metal teeth piston unless it's a one piece cnc piston otherwise you are asking for trouble at that fps. If you decide to go for a one piece cnc'ed piston be aware that the extra added weight of the piston slamming into your gearbox front side may crack the shell.

The supercore is not a piston designed for high ROF. it's far too heavy as compared to Azimuth pistons and other polycarb and nylon reinforced pistons. Not saying that you can't or shouldn't do it, but it's not the ideal application.

At M150 you will need to be far more precise with AoE, gear meshing, shimming when you build your GB. Their really is no reason that the Prom Hard or the Supercore shouldn't last 20k with M150. There are reported users at M210 AEG with 15k-20k lifespans on those pistons

[ASESINO]

Fix the AOE, that´s all you need..

[lurkingknight]

full metal rack, EPOXIED to a poly carb piston that has been swiss cheese drilled, and correct AoE adjustment will work fine for an m150. You want to keep weight as low as possible. The more weight in the piston, the more energy is required on the pickup tooth, so if things aren't set up properly, the force of your sector gear slamming into the pickup tooth either shears teeth off gears or the entire back end of your piston is ripped off.

There are guys out there running 10$ pistons in this fashion with huge sprigs like that with long life spans, it's all in how you set up the gearbox. Look on some of the american boards where they run 500 fps guns on a regular basis to see how they're doing things (airsoftmecanics, airsoftretreat, etc) The guys on ASM do nothing but test the boundaries of cheapass parts and high rof/fps builds.