rapid semi auto blowing fuse, but burst is just fine

[abugroza]

hi guys i got a problem which i've been wandering around but not avail to find the solution or kinda but i'm not sure with my budget

i got dboys m4 which i slapped in m120 g&p high-speed, 18:1 gears (no DSG ofc), super-shooter m120 spring, shs steel teeth (weight around 20g) piston

and wired with irlb3034 mosfet, and fuse (glass one gonna change to blade but too lazy to moved up hehehe)

the reason i wired irlb3034 is because i just got a cheap military action brand switch assembly (i bought it in rush in my local store, and i'm not live in canada tho) and my personal preference of shooting is semi-auto

but another problem occur when i try to shoot it in rapid fire, the fuse blown up (30A last try), but after slapping a new fuse and tried full auto, it works fine even back when i use 25 one

how do i solve it? with torque motor or is it limitation of my aeg built

[ThunderCactus]

Semi auto builds up more heat because of the start spikes.
Fuses blow due to heat, not specifically amperage.
The G&P motors are complete shit to start with, so i wouldnt be surprised if thats your exact problem right there.
Get a tienly or asg motor, like a 30 or 35k

[abugroza]

ah sorry for reeeeeaaally late reply

the problem is there's a washer thick on bevel and sometimes it make resistant, so i custom fit it and reshim again

the unit now can be shot fast without make the wiring getting hot

[Styrak]

Yup too tight shimming will cause a lot of issues.