This is the set to use if you cannot afford the Webster gearbox. Straight cut gears are noisier than the standard gears but they are stronger and you do not have the side forces of the helical gears. The kit includes: laygear, 2nd gear, 3rd gear and the 1st motion shaft. The best part is that the gear ratios are closer than the standard box.
Straight Cut Gear Set - "A" Series