Swiss Arms Sig 552 Commando AEG making AWFUL NOISES: HELP

[MikeMcNair]

anyone even know what the name is of this part? when i search for selector switch, and the likes, i get nothing.

[Rotting]

Unfortunately after about an hour of searching to find this specific part, I came up with nothing. Most parts that are replaced due to damage are the exterior parts, and so they're more common to find (in relation) than internals.

I hate to say it, but you may have to purchase another. Note that purchasing a clone also works in these types of situations, especially since you can find clone SiGs for cheap. the clearsoft ones use the exact same internals, and if it comes down to it, the investment spent on a clone sometimes beats out having to buy individual parts. You figure, SiG parts alone are hard to find, immediately that means whoever does sell them is going to be selling them a bit more expensive. If you purchase a clone, you basicaly are buying a "spare parts" gun, should another particular piece fail for any reason.

In regards to your previous mentioned problem with the whirring sound coming from the motor, like others have said, it's from the depth adjustment not being proper. OPne of the common issues with SiGs however, is that they sometimes don't even come with the plate inside to adjust the motor, and half the time when it does, it won't adjust. Personally before I switched motors, I had to shove a very small steel cube in there to push the motor into proper position.

That sound for a SiG is more than likely not the piston. Just judging by the sound on the video, I'd gather a 90% chance it's the pinion gear (the gear on the motor) being stripped. Pinion gears can be replaced, however for the most part it can be a better benefit to just buy the appropriate motor. Note that SiG models use a MEDIUM size motor. I don't care what anyone else says, I've had plenty of people tell me it's a short motor. It's a medium motor. Even though it is the motor, or at least from what I can tell it is, it's still never a bad investment to pick up a couple spare pistons either. General rule of thumb is you want to replace the piston before every replacing the gears. Pistons aren't very expensive, gears on the other hand, are.

Sorry about the delay in response in regards to this. For the next little while I'll check here actively for PMs or follow-up on this thread in case I'm able to assist any more. I'll also continue to try and find the selector-switch piece, but don't get your hopes up on that.

[MikeMcNair]

rotting, you are the man, thank you for taking the time to come in here, i really appreciate it!!

as for the noise, it was actually the gear axles sliding out of their holes in the mechbox about 1-2mm, this caused the gears to be misalligned, and the noises we heard.

in this video, you will see the axle actually coming out as i fire the weapon, and i press it in, and it comes out again.....

[MikeMcNair]

ok, got the gun together, and she sounds GREAT while dry firing, but when the mag is in, the thing sounds like it wants to fire the first few rounds, then gets muffled, as if there is a jam on the barrel, but there is not.

what the hell did i do wrong?

[Styrak]

Originally Posted by MikeMcNair

as for the noise, it was actually the gear axles sliding out of their holes in the mechbox about 1-2mm, this caused the gears to be misalligned, and the noises we heard.

in this video, you will see the axle actually coming out as i fire the weapon, and i press it in, and it comes out again.....

Yeah that's called gear shimming.

Originally Posted by MikeMcNair

ok, got the gun together, and she sounds GREAT while dry firing, but when the mag is in, the thing sounds like it wants to fire the first few rounds, then gets muffled, as if there is a jam on the barrel, but there is not.

what the hell did i do wrong?

Probably assembled/inserted the hopup and/or rubber incorrectly.

[MikeMcNair]

Thanks, I will take her down again and figure out the hop up issue.

I am totally and completely new to AEGs being a GBB guy my whole life, so tha ks for Bearing with me.

[MikeMcNair]

Ok, thanks forthe tips!!! The nozzle was not placed on the tapper plate properly, she fires and dam good too!!!

BUT, I have to hold the mag up and forward a bit for it to feed pellets, any thoughts on that?

Thabks again all for the assistance!!!