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Mosfet for Mp5 Retractable Stock

YUP - it is the classic China motor,

with the 2 tabs punched shut at sides.

The 2 screws you fit the Schottky diode to do not enter a lockring like on SHS/G&G's,

Fit a cheapy Schottky diode on there,

thus reducing the sparks from motor's inductive load,

when switch re-opens as trolley pops on semi,

(or you release trigger on auto).

The sparks come from the power shutting off at switch,

as switch opens, but energy is stored in motor/relay,

and THAT is where/when the spark jumps across the opening contacts...

The diode just tells the sparks to fuck off.

Wrap the diode leads CLOCKWISE if possible...

for some reason in ICS video they wrap it counter-clockwise,

I mean it will work & all that...

just if you wrap wires CCW they can tend to want to fight their way off the screw you tighten CW, so if you wrap the wire/lead CLOCKWISE it tends to fight less as you tighten screw...

Bit like when people apply PTFE tape to plumbing compression joints but wrap the wrong way & wonder why tape is stripping away as they tighten joint. Again wrap the tape clockwise the way the nut tightens and it doesn't fight to undo as you tighten.

Same with wires/leads, wrap CW if possible so it fights less trying to jump off screw as you tighten

 
Last edited by a moderator:
YUP - it is the classic China motor,

with the 2 tabs punched shut at sides.

The 2 screws you fit the Schottky diode to do not enter a lockring like on SHS/G&G's,

Fit a cheapy Schottky diode on there,

thus reducing the sparks from motor's inductive load,

when switch re-opens as trolley pops on semi,

(or you release trigger on auto).

The sparks come from the power shutting off at switch,

as switch opens, but energy is stored in motor/relay,

and THAT is where/when the spark jumps across the opening contacts...

The diode just tells the sparks to fuck off
You're a good'n cheers. 

 
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