Maxcow -

(All photos copyrighted by Max Magliaro or by other authors as noted. Reproducing, copying, or otherwise reusing such photos is not allowed.)
DB not available

N Scale Loco Gear Data

The chart below is a collection of known available loco motor gear parameters. Some gears have a hole in their center. These will have a value in the Bore column. Others are molded on an axle. Those will have a value in the Axle Diam column.

Note that some of these are double (or compound) gears. Those will have two lines in the chart for their entry, with the smaller diameter part of the gear being specified in the first line.

I have just begun this chart, and I will add entries to it as I measure more gears.

Manufacturer	Part #	Type	Material	Used In	Outer Diam (mm)	Bore (mm)	Axle Diam (mm)	Thickness (mm)	Module	# Teeth
Bachmann	811XX-OOMO1	Double	Delrin	Spectrum 2-8-0	3.60	1.50		?	0.3	10
					7.20				0.3	22
Kato	930010	Double	Delrin	GP38-2(orig)	5.80	1.60		2.31	0.3	18
					7.92				0.4	18
Kato	930030	Double	Delrin	U30C	5.70		1.58	2.31	0.3	17
					8.40				0.4	19
Kato	930040	Double	Delrin	C30-7 and U30C	5.02		1.15	2.31	0.3	15
					8.40				0.4	19
Kato	930050	Double	Delrin	Mikado	4.20	2.08		2.28	0.3	12
					6.00				0.3	18
Kato	930060	Double	Delrin	F-Units (Rev/DCC)	5.08		1.11	2.31	0.3	15
					7.90				0.4	18
Kato	930070	Double	Delrin	RS-2, RSC-2, SD40-2(orig), SD70MAC	4.24		1.14	2.31	0.3	12
					6.73				0.4	15
Kato	931010	Idler	Delrin	GP38-2(Orig)	5.28	1.60		1.20	0.3	16
Kato	931020	Idler	Delrin	GP38-2 (Rev), GP50, F-Units(Orig)	6.07	1.60		1.20	0.3	18
Kato	931030	Idler	Delrin	Many, Idler Version 3	9.90		1.90	1.20	0.3	31
Kato	931040	Idler	Delrin	Mikado	6.00	2.08		1.27	0.3	18
Kato	931050	Idler	Delrin	F Units (Rev and DCC)	5.6		0.9	1.20	0.3	17
Kato	931070	Idler	Delrin	P42, RS-2, RSC-2, SD40-2(orig)	6.3		1.15	1.15	0.3	19
Kato	931080	Idler	Delrin	RS-2, RSC-2	7.1		1.15	1.30	0.3	22