****! piston exploded

[coach]

Originally Posted by etd

BTW would an Aluminum piston or full metal (teeth and piston) piston be a better option? I'm assuming it would eat through sorbos pretty fast due to the weight.

possibly but you will likely eat through your gears vs the piston or both. I'd just stick with the plastic piston as it's cheaper and easier to swap out than gears. sorbo pads are pretty resilient but it's hard to say if they'd stand up to the abuse you're giving it.

[theguy]

Mmmmm


Seriously, Give the super core a shot

[AngelusNex]

I say you should stick to Plastic toothed pistons, with the second tooth removed, and the last 3-5 teeth being metal. You'll eat through em quicker than most guns but they shouldn't explode. Just with that setup stay far away from all metal teeth.

[Donster]

prometheus hard piston is your best bet.

[kalnaren]

Originally Posted by etd

Thank you for giving an INFORMED answer.

Just because what other people described doesn't appear to be your issue, it doesn't make the advice uninformed.

[yuhaoyang]

Mmm... I would say prometheus hard piston too, just because a lot more people have experiences with it than system supercore.
but I quite like the modify ultra piston that had been pre-short stroked.
you can drop in a sorbo piston and cylinder head right away then. They seal perfectly with a G&P, DBoys, systema, TM and modify cylinder.

[etd]

You still don't get it. I provided the facts and the information in relations to the springs used and ROF. The "solutions" provided by some people simply ignored the facts being presented and assumed they can sound educated in the subject rather than be helpful. Forgive me if this comes off as ignorant but its the truth. Anyways lets get off the subject.

Originally Posted by kalnaren

Just because what other people described doesn't appear to be your issue, it doesn't make the advice uninformed.

Also I would go with the system core piston but my orders are normally through airsoftparts.ca and wholesalers to keep costs low. Seems they don't carry this particular piston.Thanks for the advice though the Core piston looks really really good according to some of the reviews on the web.

[ThunderCactus]

Prometheus pistons are freaking TANKS, but they're on the heavy side.
Actually most high ROF setups overseas use swiss cheesed stock TM pistons. TM pistons are pretty tough apparently.
I'd heavily advise against using a systema magnum motor. They are power hogs and the 3 I've dealt with were all poorly put together, and all drawing double the normal amperage. It's easier to tell when you have a triggermaster, you just spam semi auto and if you get an overheat warning, your magnum needs to be tuned up.
I had my magnum and G&P M140 tuned by a local RC hobbyist/airsofter and I can lay down semi-auto till I run out of mags now lol

-Use bushings instead of bearings
-Remove the second tooth on the piston
-Systema recommends you use a 350fps spring for high speed setups
-And I recommend you atleast use a mosfet so as to not melt your trigger (I've seen it happen)

[etd]

I'm running 14 AWG wires in a SIG 552 along with a 10.8 batt. I have no room for a mof :S I have a spare V3 switch assembly on standby already. As for the Magnum I guess I just got lucky. Mines fine.

[Shirley]

This is why you don't buy full metal teeth piston head. Better to replace a piston head than to replace gears.

[yuhaoyang]

my magnum seems okay, I get a slight heat-up when I spam semi-auto for like 50rds non-stop. Also, I have a MK1 triggermaster so I don't even know if it has an overheating warning ><

[Skladfin]

Originally Posted by kalnaren

Just because what other people described doesn't appear to be your issue, it doesn't make the advice uninformed.

your answer is theoretically correct, and the gears can catch on the piston before it fully shoots out.

The uninformed part is that, this does not happen unless you use a 14.8v lipo with sub 290 FPS spring. Let alone M120 with a TORQUE UP GEAR(Slower gear cycling) to begin with.

I see this on ASC all the time. People speak too much from "What I heard from the other guy" and "In Theory...", and not enough from first hand experience.

When I first started telling people to wash their hop up rubber, they made it sound like I was mentally challenged or some sort("theory proves that you are BSing me"). Now people do it all the time for better accuracy(Ironic huh?).

But let's not go there, I get flamed often enough for speaking the truth against the tide anyway

[ILLusion]

I would also recommend a Prometheus piston as a solution - the way the rear end sheared off your piston appears to be caused by a weak piston combined with a very hard impact of opposing forces. Technically, the component list you are using should be compatible enough to handle such a load - the piston you are using is the only one I'm unsure about, which is why I'm suggesting it as the weak link.

[CDN_Stalker]

Originally Posted by ILLusion

I would also recommend a Prometheus piston as a solution - the way the rear end sheared off your piston appears to be caused by a weak piston combined with a very hard impact of opposing forces. Technically, the component list you are using should be compatible enough to handle such a load - the piston you are using is the only one I'm unsure about, which is why I'm suggesting it as the weak link.

It's identical to the DF "Titanium" piston, and I've seen the same thing happen within a couple thousand cycles. The metal teeth are help in a rail on the piston body, and the rails separated. DF uses shitty plastic, so it's no wonder they shread. I'm not sure what type of plastic his used, but the overall design is flawed. Any polycarb piston should hold up a lot better than those metal teeth ones do.

[Azathoth]

I recommend the Prometheus hard piston as option 2. My recommendation is the SYSTEM Supercore. It is going to cost 50-60 $ USD MSRP but it will outperform the prometheus Hard in every regard, lighter, stronger, exchangeable metal rack of teeth. I just finished building a V2 test gun as follows:

Airsoft Surgeon stage 6 spring (rated as 650+FPS)
Prometheus tappet, nozzle, cylinder N-B, cylinder head, piston head
System Supercore Piston
Prometheus triple torque gears.
Magnum Motor

the gun fires great with 14.8 LiPo and their is an excellent ROF for the the spring. I suggest you look at airsoftmechanics.com for some parts and setup recommendations as that is where the english language ultra high end tuners frequent. I suspect you will find that the #1 recommended commercially available piston is the Supercore, likely followed by the Prometheus Hard.