The Green One | 29.6" Powell-Peralta | TB110 | dual 6355 | Caliber 2 | 10S 14500mAh [serious]

These have roll pins instead of dutch pins because of the way the back of the rotor is shaped. There is a whole thread about it :smiley:

It’s similar to a key on a pulley, it prevents the pulley from ever slipping on the shaft. In the same way, the pin prevents the bell (rotor) from ever slipping on the shaft.

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