why brush shunts?

[bryceanator]

why do they have them thay dont do any thing i tryed it with my motor with unsolder shunts and they did not touch the hood and it works fine why do we use them

[XXXER]

Well, i do not know how they did not affect you, i can usually tell if I did a crappy soldering job or not, I can absolutely tell when out on the track, if i lost a shunt or not.

In racing, i think every little bit helps.

[bryceanator]

i didnt drive my car i just spun the motor of a 4 cell pack i was just wondering why