Henderson produced 4 cylinder motorcycles from 1912 until 1931. They were the largest and fastest motorcycles of their time, and appealed to sport riders and police departments. Police favored them for traffic patrol because they were faster than anything on the roads. The company began during the golden age of motorcycling, and ended during the Great Depression.
See also: Excelsior-Henderson Motorcycle
Source: www.HendersonKJ.comHenderson Motorcycle Co.
The Founders: William and Tom Henderson
In 1911 the American Henderson Motorcycle Co , 268 Jefferson Ave., Detroit, Michigan, was formed by William G. Henderson in partnership with his brother Tom W. Henderson. Bill had the ideas and enthusiasm for motorcycling, and Tom had the better financial acumen.
1911 Prototype
The Henderson brothers constructed a single prototype motorcycle during 1911. The prototype had the belt drive typical of the times, but this was changed to chain drive for production models.
1912 Henderson Four
Henderson Motorcycle promptly announced a new 57 cubic inch (934 cc) IOE four cylinder 7 hp motorcycle, with the engine mounted inline with the frame and chain drive. Production began in 1911, using the in-line four cylinder engine and long wheelbase that would become Henderson trademarks, and it was available to the public in January 1912. Advertisements boasted 7 H.P. and a price of $325.
It was the third, four cylinder, production motorcycle built in the USA., and featured a folding hand-crank starter handle.
1913 Model B
Improvements included a better brake (singular), lower seating position, and improved girder forks. It was in this year that Carl Stearns Clancy of New York returned from circling the globe on a 1912 Henderson, armed with many photographs to prove it.
1914 Model C
The 1914 Model C had a two-speed gearbox incorporated in the rear hub. (The first Henderson to have gears.)
1915 Model D and E
Shortly after the Model D was announced, it was followed by a Model E, with the wheelbase reduced from 65” to 58”, through a change in the footboards, and this improved handling.
1916 Model F
The shorter wheelbase became the standard, and the engine now incorporated a cam gear driven “mechanical oiler”, and a kick-start.
1917 Model G
The old splash lubrication was superseded by wet sump lubrication. A three-speed gearbox was now attached to the engine and incorporated a heavy-duty clutch. Sales soared and new dealerships were established.
Alan Bedell averaged 48 mph for 1154 miles at Ascot Park in California setting a new 24 hour record, and then, on June 13, 1917, broke the transcontinental long distance record of 1915 (set by “Cannonball” Baker on an Indian Twin,) when he rode his 1917 Henderson from Los Angeles to the city of New York (3,296 miles) in seven days, sixteen hours, and fifteen minutes. The roads outside of towns were primitive by today’s standards, and the ride would have been more like an off road ride than the highway tour of today. The Cannonball Baker Sea-To-Shining-Sea Memorial Trophy Dash was named in Baker's honor.
Despite record breaking and racing successes, the effects of WW1 on sales had damaged their financial position.
Excelsior Motor Mfg. and Supply Co.
File:Henderson logo 1918.jpgIn 1917 the Hendersons sold the firm to Ignaz Schwinn, owner of Schwinn, the manufacturer of Schwinn bicycles and Excelsior motorbikes. Production was moved to Schwinn's Excelsior Motor Mfg. & Supply Co., 3701 Cortland Street, Chicago, Illinois.
Hendersons were marketed extensively overseas as well as in the United States during the Schwinn years. Today, there are almost as many extant Hendersons in Europe and Australia/New Zealand as in the U.S. The Excelsior name had already been used in Germany and Britain, so export models were marketed as the "American-X".
When production resumed for the new Model H, the engine serial numbers began with a Z, instead of the older H.
1918 Model H
- Engine: inline IOE
- Cylinders: Four
- Displacement: 67 cubic inches (1100 cc)
- Bore & Stroke: 2.53x3.0 inches (64.3x77.7 mm)
- Carburetor: Schebler
- Ignition: Magneto
- Transmission: 3 speed
- Forks: Henderson spring fork
- Brakes: Band, rear only
- Tire size: 3.00x28 inches (7.62x71 cm) (front and rear)
Initially Bill and Tom Henderson worked in management at Excelsior (with Tom receiving twice the pay of Bill), but Tom soon left, early in 1919, to become a Henderson exporter.
1919 Model Z and Z-2
The 1919 Model Z included a GE generator on the Z 2 “electric” model. The 70 cubic inch (1147 cc) 4-cylinder developed 14.2 H.P. This model had a new Henderson logo which included the red Excelsior “X”.
Arthur O. Lemon
In 1915 Arthur O. Lemon had joined Henderson as a salesman, and was employed in the Excelsior Engineering Department after the sale of Henderson. Lemon designed an updated motor for the 1920 Model K. Bill Henderson and Arthur Lemon had worked closely together in the past, but Bill didn’t like Lemon’s changes toward heavier motorcycles. He left in 1920, before the Model K came into production, to form the Ace Motor Corporation, where he would make the lighter, faster motorcycles he had envisioned. Arthur Lemon was then put in charge of engineering for Excelsior and Henderson.
1920 Model K
The Model K weighed more, produced more power, and was more durable and reliable than its predecessors. The 79.4 cubic inch (1301 cc) side valve engine, with 2.6875 inch (68.3 mm) bore, and 3.5 inch (88.9 mm) stroke, was rated at 18 hp (28 bhp) The K had a top speed of 80 mph (128 km/h).
The Henderson Model K was the first motorcycle to use full pressure engine lubrication. It was also the first motorcycle to offer, an optional, reverse gear (for use with sidecars).
The frame had steel forgings on every joint. Forks and handlebars were the same as the Series 20 Excelsior. Among its several advanced features were electric lighting and a fully-enclosed chain.
The K continued on sale to 1922, with sales increasing despite the post WW1 depression. Increasingly, Henderson motorcycles were being used by law enforcement agencies, and their reputation continued to improve, with durability and distance records often falling to them.
1922 DeLuxe
In 1922 the 28 hp (at 3400 rpm) DeLuxe was released. Improvements included a larger, more efficient carburetor, improved intake manifold and rear brakes; redesigned crankshaft, cylinder head cooling, exhaust system and seat. There were also optional Lynite die-cast alloy pistons and a revised reverse gear.
The heavier Police Department version was demonstrated first to the Chicago Police, and achieved 98 mph. When it was demonstrated to the San Diego Police a genuine 100 mph was achieved. Harley Davidson, decided to challenge Henderson to a contest that was held at Dundee Road, Chicago, in April 1922.
The Harley won the first heat, but lost the other eleven, with the Henderson exceeding 100 mph. This was a shining hour for Henderson.
Between May 30 and 31, 1922 Wells Bennet and his Henderson Deluxe set a new 24 hour endurance record (including all the intermediate records) at the Tacoma Speedway, Washington, clocking up 1562.54 miles averaging 65.1 mph. This record was not beaten until 1933, by a Peugeot with a team of four. The solo record was not bettered until 1937 when Fred Ham’s 61 cubic inch Harley averaged 76 mph.
On December 11, 1922 William Henderson was killed in a motor accident testing his new Ace. In 1923 Arthur O. Lemon left Excelsior to become chief engineer for Ace.
1925 DeLuxe
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