Mechbox Glue
 

The front end of my mechbox snapped off maybe a year ago, so I bought a systema reinforced mechbox. Now I see that it has some cracks near the front and could go at any time. The price of a PDI 170 I guess. Also, my friend's mechbox just cracked near the front also.

Faced with the prospect of having 3 broken mechbox shells, I can't help thinking, can any be repaired? I've been told that there's a specific "metal glue" that's supposed to be super strong. Anybody know if anything like this is feasable or if we'd may as well make a mechbox out of toothpicks? Anybody ever welded the broken front of a mechbox successfully? Epoxy? Anything?

Thanks,

Alex

Not just the spring you're using, but what kind of piston head are you using? And are you doing a lot of dry firing?

I can't imagine even steel epoxy fixing something like this. I've used it in a lot of applications, but the forces that a mechbox endures would be too much for steel epoxy.

If there were such a glue strong enough to hold a cracked mechbox back together they would make the mech box out of it. Buy a reinforced mechbox.

Simply inject epoxy into the mechbox, and wait. It will solve all your issues.

Metal piston head's can do that I think. Don't know 100%.

I bought a reinforced one after the stock one broke, and this has cracks on it now too. The piston head came with the piston, aluminum. And no, haven't been doing an excessive amount of dry firing. I mean, it happens a few times per game, but nothing out of the ordinary.

I think it would be beautiful if someone could build a metal/rubber hybrid mechbox. Everything metal but the front end (part that usually breaks) being made of a slightly stretchy hard rubber. Hard enough to hold your mechbox stuff in place, but soft enough that it won't break and can absorb some of that piston shock.

Alex

that aluminum piston head is the cause of your gearbox destruction, reinforced or not. Change it to a silicon or POM one asap!

Well a PDI 170% on an aluminium should NOT break mechs. If its a systema M170 then probably. I have had recoil pistons slamming the crap at my G&P and systema mechs and have had no problems.

Its probably because your airseal between the hop unit and the nozzle + airseal in the cylinder is not good causing it to "dry fire" even when you are firing BBs.

You can tell the difference between an airsealed system and a non airsealed system even during dry firing. A close to perfect airsealed system has a delay between the release of the piston and the impact on the cylinder head, and the air coming out is forceful. On a system thats not airsealed, the piston just slaps straight onto the cylinder head and sounds like a "slap" more than a "pop/smack".

He has an aluminum piston and head, as mentioned in another thread. That is NOT a good combination.

Adding a 400FPS spring. Bang. Even a systema mechbox can be broken. The nozzle thing could contribute to it though. Even a heavier BB weight theoretically could help

Change both right away and hope the crack doesn't spread.