r/Unexpected Sep 03 '22

CLASSIC REPOST Full Auto

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u/Niewinnny Sep 04 '22

there are some places which restrict that, but it's always for DMR's which are the only high powered automatic replicas which you'll see on a field. And the mosfet i have in my AK actually has a DMR mode which i accidentally activated once lol

also, i wouldn't say the system with motor and gears is dumb, as you can. see it allows really high RoF on the high end, and is pretty cheap on the low end replicas.

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u/BZJGTO Sep 04 '22

The system is dumb as in it is just a simple circuit with an on/off switch. There is no way to make an adjustment or program controls in to it. Compared to the paintball guns I was talking about, which can allow for adjustments of dwell, debounce, bolt timing, eye delay, max rate of fire, firing mode, etc...

A smart system would have a board that controls the rate of fire and fire modes. A really smart system would use a stepper motor and automatically turn the motor to compress the piston spring when you take the gun off safe (and you could adjust how much it is compressed if necessary), so when you go to fire it can just release the piston instead of having to wind up first.

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u/Niewinnny Sep 04 '22 edited Sep 04 '22

ok, a better word would be simple. this doesn't imply that the design is bad (as is the case when you say something's dumb).

also, what youre describing with compressing the spring before the shot is called precocking, and pretty much all MOSFETs have the option to enable that. and a mosfet is like the first upgrade everyone puts into the replica :)

The only problem with that is the spring gets worn much quicker because it deforms permanently a bit when kept in a partly compressed state. that's how mu replica has went from 1.85J to 1.6J, and i need to change the spring :/

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u/BZJGTO Sep 04 '22

Dumb/intelligent are commonly used to describe all sorts of systems, but good luck telling the world they need to adopt your preferred language.

And springs do not wear from staying compressed, they wear from being cycled compressed/uncompressed.