Description
For Sale: All Nation Helix Gears: Brass Gear Lower Drive Shaft (1)#4050, Steel Gear Upper Drive Shaft (1)#4049 PN#4050-4049
Sale includes:
1 Steel Helix Gear, Upper Drive Shaft #4049
1 Brass Helix Gear, Lower Drive Shaft #4050
These gears are machined to All Nation’s engineering specifications that replaced the very early involute gear configurations on the transmission tower drivers for the F3/F7, 1000 HP Switcher and various other 3rd party models that implemented this style of power transmissions. Consequently, the inside diameter of the #4049 is designed to press onto Part #4042 drive shaft and #4050 inside diameter to press fit onto Part #4041, the split coupling, also known as a spline which allows axial movement and power transfer to the opposing wheel set in the truck.
#4050 has 26 teeth, left hand with an outside diameter approximately 20 mm, inside diameter 6.4mm and 3.55 mm in width. The above O.D. should give you .002 – .004 backlash with the mating gear #4049.
#4049 has 20 teeth that mates with #4050 with an outside diameter approximately 15.9 mm, inside diameter 6.3 mm and 3.4 mm in width.
Note: Drive shaft NOT included.
