Gear drive in the box

Gear drive in the box. The dimensions of the box are 105 mm - 70 mm - 17 mm.
Transmission ratios -
# 0 - ratio: 1: 1 - RPM: 100, gear 1
# 0-1 - ratio: 2: 1 - RPM: 50, gear 2
# 1-2 - ratio: 5.33: 1 - RPM: 18.75, gear 3
# 2-3 - ratio: 16.89: 1 - RPM: 5.92.gear 4
# 3-4 - ratio: 59.11: 1 - RPM: 1.69. gear 5
The gearing places of the gears touching each other are greased with graphite grease. Shafts of gears 2,5 mm. Lapping at low speed for 8 hours with a change in direction of rotation.
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