This gear set is 30% faster than the standard gear ratio which is 18:1. Carbon steel is a better quality metal then the Cast metal gears.
These gears will require shimming.
For the experts:
Bevel Gear: has three layers of teeth: the inner layer of 10 teeth; the outer layer is 30 teeth; the middle is 6 teeth; Spur Gear: has two layers of teeth: the inner layer is 24 teeth, and the outer layer is 39 teeth; Sector Gear: has two layers of teeth: the inner layer is 28 teeth, and the outer layer is 16 teeth;
Count the gear for example: Pinion Gear (3.0 laps) → Bevel Gear (1.0 laps) Bevel Gear (3.9 laps) → Spur Gear (1.0 laps) Spur Gear (1.16 laps) → Sector Gear (1.0 laps) 3.0 x 3.9 x 1.16 =13.65