Harley-Davidson Hummer Chart

Harley-Davidson built a series of small two-stroke singles in their U.S. factory from 1948 to 1966. These models were marketed in three displacements under various model names. We are using the name Hummer here to loosely define the entire model group. All of these were piston-port two-strokes with three-speed, left-side foot shifts. The kick-starters were on the left side and were not foldable. Most of the mufflers were black with chrome header pipes, but chrome mufflers were an option on many models. The wheel rims and handlebars were also painted black on some models, with chrome components offered as options. The handgrips were larger in diameter than the handlebars and the throttles did not have return springs, making them feel quite different to the hand than those on small Japanese machines.

125cc S-model Single

Year	Colors	Production	Suspension	Tank	Muffler
1948	A1 - B - R	10,117	girder	solid color	fishtail
1949	A	7291	girder	solid color	fishtail
1950	A1 - B - B1 - R - Y	4708	girder		fishtail
1951	B2 - B3 - G - R1 - Y	5101	Tele-Glide	solid color	round
1952	B2 - B4 - G1 - R1	4576	Tele-Glide		round

The original S-model had 1.7-3 hp, battery ignition and lighting, a 50-inch wheelbase, 19-inchwheels, a top speed of about 55 mph, weighed about 170 pounds, and had a 3-speed foot shift. The bore and stroke were 2.06" x 2.28".

165cc ST-model Single

Year	Colors	Production	Tank	Wheels
1953	B5 - G2 - G3 - R2	4225		3.25 x 19-inch
1954	A - B5 - G2 - I - R2 - Y1	2835	solid color	3.25 x 19-inch
1955	A - B6 - G4 - R - R2 - Y1	2263		3.25 x 19-inch
1956	B6 - R2 - X - Y2	2219		3.50 x 18-inch
1957	B7 - F - R2 - W	2401		3.50 x 18-inch
1958	A - B7 - C - R3	2445	large 165 logo	3.50 x 18-inch
1959	B7 - R3 - R4 - T	2311		3.50 x 18-inch

All of the 165cc ST's had Tele-Glide front suspension, no rear suspension, color-coordinated upper fork cover plates, 5.5 horsepower, a bore and stroke of 2.37" x 2.28", and battery ignition and lighting.

Hummer 125cc

Year	Colors	Production	Tank	Wheels	Front Brake
1955	A - B6 - G4 - R2 - Y1 - Z	1040		19-inch	None
1956	B6 - R2	1384		18-inch	None
1957	B7 - F - R2 - W	1350		18-inch	Drum
1958	A - B7 - C - R3	1677	Large 125 logo	18-inch	Drum
1959	B7 - R3 - R4 - T	1285	Large white logo	18-inch	Drum

The 125cc was brought back into the lineup as a 3.5-hp economy model in 1955. The economizing was clearly visible in the black handlebars and wheel rims, you-squeeze-it bulb horn, and the deletion of the battery ignition and lighting. The weight had crept up to 178 pounds. This is the only model that was officially named Hummer. Note: The change from
19" to 18" wheels in 1956 may not be correct for this model.

Super 10 165cc

Year	Colors	Production	Tank	Wheels
1960	B8 - G5 - R2 - R4	2488	Single stripe thru white	3.50 x 18-inch
1961	B7 - B8 - G5 - R4 - W	1527	Large white lower panel	3.50 x 16-inch

The Super 10 had a 9-hp version of the B (Hummer) engine. A version restricted to 5 hp was also offered. This transition model between the Hummer and Pacer was offered with options such as buckhorn handlebars and buddy seats in white or gray. All Super 10's had magneto ignition instead of a battery.

Ranger 165cc

Year	Colors	Production	Tank	Wheels
1962	B7 - P - R4 - R5	app. 200	White top panel	3.50 x 18-inch

The Ranger was produced until the factory ran out of 165cc engines. The Ranger was basically a stripped Scat without lights or a front fender. The gearing was very low for off-road work, and the same gearing was offered as an option on the Scat. The production total of the Pacer, Ranger, and Scat for 1962 was 1983. Only about 200 of these were Rangers. *

Pacer 175cc

Year	Colors	Production	Suspension	Tank
1962	B7 - P - R4 - R5	* see note above	rigid	White top panel
1963	A - R4 - R5 - T	1740 (inc. Scat)	spring	Birch White lower panel
1964	A - R6	2760 (inc. Scat)	spring	Large white side panel
1965	A - B9 - R7	1250 (inc. Scat)	spring	White lower panel with stripe

The Pacer and Scat both had 10 horsepower, a bore and stroke of 2.37" x 2.41", a 52-inch wheelbase, 16-inch wheels and a 1.9 gallon tank painted in the same colors and patterns for each year. The listed weight of the Pacer was 205 pounds.

Scat 175cc

Year	Colors	Tank	Suspension	Wheels
1962	B7 - P - R4 - R5	White top panel	rigid	18-inch
1963	A - R4 - R5 - T	Birch White lower panel	spring	18-inch
1964	A - R6	Large white side panel	spring	18-inch
1965	A - B9 - R7	White lower panel with stripe	spring	18-inch

The listed weight of the Scat was 220 pounds. All Scats had high-mounted fenders and semi-knobby tires. The most interesting component of the Pacer and Scat of 1963 was the new rear suspension spring mounted underneath the engine, predating the Softtail by about twenty years!

Bobcat 175cc

Year	Colors	Production	Exhaust	Wheels
1966	R7 - S - U	1150	Chrome	18-inch

The main distinction of the Bobcat was its one-piece, fiberglass tank cover, seat base, and rear fender, much like the one that would later appear on the original Super Glide. The standard muffler was painted black, but I believe nearly all Bobcats were sold with the optional chrome muffler.

Solely for the purpose of easily fitting all of the color names into this chart, each color has been assigned a letter designation. These are as follows:

A - Black A1 - Brilliant BlackB - Azure Blue B1 - Riviera Blue B2 - Rio Blue B3 - Metallic Blue B4 - Marine Blue Metallic B5 - Glacier Blue B6 - Atomic Blue B7 - Skyline Blue
B8 - Hi-Fi Blue B9 - Pacific Blue C - Tropical Coral F - High Fire G - Metallic Green G1 - Tropical Green G2 - Forest Green G3 - Glamour Green G4 - Hollywood Green G5 - Hi-Fi Green I - Daytona Ivory P - Hi-Fi Purple R - Flight Red R1 - Persian Red
R2 - Pepper Red R3 - Calypso Red R4 - Hi-Fi Red R5 - Tango Red R6- Fiesta Red R7 - Holiday Red S - Sparkling Burgundy T - Hi-Fi Turquoise U - Indigo Metallic W - Birch White X - Tangerine Y - Sportsman Yellow Y1 - Anniversary Yellow
Y2 - Champion Yellow Z - Aztec Brown