2 speed dogbox transmission (working prototype)

the prototype 2 speed dog-box ( shift at high speed/ rpm with no clutch )
so far it works pretty good , heavy enough to move my 200 lb ass on a bmx bike ( needed lower gearing ).

needs 3 shafts made PDF included
requires 8pc 608 bearings.
m 4 fasteners
1/4 " nc fasteners for clamp mounts

world be good on a large rc car , maybe a kids scooter or car.

video : https://youtu.be/ob39oL6x_co