Harley Engines

13 Апр 2015 | Author: | Комментарии к записи Harley Engines отключены
Aermacchi 250 Wisconsin

Big Twin Harleys

Listed are the 6 major H-D engine styles and associated information.

WARNING. picture/icons link to larger, pictures.

Knucklehead 1936 1947 In the world of Harley-Davidson are two different schools of thought. One that the pre-teen H.-D.’s are the collectable. The other feels the Knuckleheads are the machines that Harley-Davidson possible today.

And if are your love, then you that the ‘36-61 is the great-grandfather of Evolution.

The first Knuckleheads in dealer show rooms in April of 1936. Designwork had in August 1931 and though proposed to be a 1933 model to the beleaguered VL, production and design increased development time. The 61 OHV was installed in a new chassis that designed in 1931 for a 65”

It was a double looped frame, chrome-molybdenum forks with gas tanks, a separate oil tankand an tank top instrument panel. not exactly as the prototype all of these were on the Knuckleheads. The 65 sidevalve had dropped after the poor of the first VL.

An engineering report, by William S. Harley on November 23, showed the 61 OHV as a 1935 production But problems with oiling and sprocket, chain and brake caused the founding fathers to scrapping the OHV project as late as 1935. However by June of they had agreed to go ahead final development of the 61 OHV.

At the Dealers Convention in November of the 61 OHV was shown for the first time. dealers had heard rumors of its for years, this was the first the factory had acknowledged it. Still not a date fordelivery the factory a line drawing of the 61 in its December 2, dealers 1936 new model followed by this statement.


For several years rumors been current all over the about a newTwin that was developing and would have on the at anyday. The most incredulous and times positively amusing have been spread this model.

True our staff has been working for a time on a model of new and original and their efforts finally a stage were such a a 61 cubic inch overhead, was to the dealers in attendance at the National Convention. However, production on model will necessarily be limited and we are therefore in no position to a public announcement at this Under no circumstances should model be ordered as ademonstrator!

In 1935 the first ten or so preproduction were assembled.These were for testing purposes and were disassembled. Factory photographs of two models show engine 35EL1002 and 35EL1003. Note these are full production numbers and not prototype numbers.

As far as we know not a single 1935 EL today.

The ‘36 OHV model did better than anticipated. plans called for 1,600 to be built. Between March and business was so good that the could not fill all of their But as late as September 30, 1936 Davidson announced in his presidents to the stockholders, that 1,836 had sold.

But no reference was given how many were made. they did agree to hold deliveries of all 1937models until to ensure sales of all remaining 1936 models.

The October dealers 1937 announcement bulletin states; For years our had a vision of a new motorcycle — one would eliminate many of the inherent with the conventional of the day. They visioned a that would render greater service, still life, and still greater economy.

With this they began work and designing a new motorcycle that retain all the best of the past and all those new principles that producea motorcycle unparalleled in and efficiency. Rumors were for years about this new that was being developed by

At our National Dealer Convention in late last fall, were given a preview of a new a 61 OHV, replete with and breath-taking advancements. Frankly, and riders were astounded. In no new model created such a

With years of development the new model, and with 70,000 of testing, we knew we were out a new motorcycle that would everything ever produced But with characteristic Harley-Davidson we wanted to get owner reaction, experience, and see how this new model in the hands of the public before we it extensively and before we incorporated new principles into the other of our line.

Harley-Davidson dealers how the 61 OHV was introduced. Without advertising and publicity, the new model was gradually here and there, principally to riders who immediately sensed here was a motorcycle that the dreams they had hoped some day come true. And enthusiasm the 61 OHV is causing! Never in all our history have so many and letters of praise been upon a new model.

Demand for the new grew by leaps and bounds. 2,000 of these new 61 OHV Harley-Davidsons are up miles of the most satisfactory ever rendered by a motorcycle. We happy — ourlong, efforts were not in vain.

No one knows for sure just how ‘36 OHV’s were The factory’s service department has information but will not divulge it. according to serial numbers by members of the ‘36 EL Registry the known serial number is Serial numbers started at so this puts 2945 as the 1945th machine built.

How are left? The registry has over a and thirty seven surviving numbers registered, but of these about twenty are original, machines.This is probably the only model with so few surviving. So if you are in owning the great-grandfather of the Evolution, be to step up.

Good luck.

The EL Registry is a group of owners and of the ‘36EL. Headed by Gerry He publishes a bimonthly newsletter tech. articles, free ads and general articles involving the EL’s. Their address is

Vineland Road C-3, FL 34787 Phone (407)

Number of Cylinders: 2

Type: 45 Degree V-Type

Transmission Constant mesh, foot

Speeds: 5 forward

Bore x (in): 3.498 x 4.250

(cu in/CC): 80/1340

Compression 8.5:1

Fuel System: or Electronic Sequential Port Injection (ESPFI)

Oil Capacity qts): 3 or 4

Primary Drive: chain

Gear Ratios: Softail Touring 1st: 9.388 10.110 2nd: 6.461 6.958 3rd: 4.599 4.953 4th: 3.586 3.862 5th: 2.925 3.150 Torque, 79.0/76.0 ft./lbs.@ 3500 RPM Touring w/carb: 77.0 @ 4000 RPM Torque, Touring 83.0 ft./lbs.@ 3500 RPM Per Gallon Dyna/Softail: 55 hwy./43 Miles Per Gallon Touring(w/carb): 50 city Miles Per Gallon hwy./42 city


Davidson Alphabet

(from Rider, January-February 1995)

by Salvadori

A great many over the years have suitably confused by Harley-Davidson’s designations. And rightfully so. The alpha-designations exist, the letters seemingly out of thin air.

Today, though we have only two engine designs to deal the Sportster X and big twin F, the number of for one model would do credit to a of soup. For example, the 1995 line included the FLHTCI and the — mouthfulls both.

Let us these. First, the FLHTCI The F stands for the medium compression OHV engine introduced in 1941; the L for the slightly more powerful Sport Solo version.

The H was on in 1955, indicating the Super Solo. In 1978 the 80-inch was introduced as an option, and by 1981 the F designation meant an 80-incher. The T was in 1983 to indicate that was a touring machine with and batwing fairing, and the C also in that year to show this model had classic and a higher price tag.

The I is the first use of that letter, and is proof that this is fuel-injected rather than

Got all that?

Now the FXSTSB. The F has been The X shows that this big had the lighter, Sportster-type front end in 1971.

The ST (in this case letters have to stand stands for the Softail chassis introduced in 1984. The second S is the front end, intro-ed in The B is for the new 1995 model, the Bad Boy.

And rightfully so. While all these might not make much to the average Harley enthusiast, help a lot in the parts department especially when prefaced by a such as an 1984 FXRT.

the first alpha-designation a Harley interested in Harley history is about someone’s JD model, the 74-inch V-twin introduced in but the lettering goes back before that.

Up to 1908, was only one Harley model per a battery-fired single cylinder, so any designation than the year was i.e. an 1907 Harley. But in the factory offered four with either 26- or 28-inch (wheels were measured the outer edge of the tire then), and either battery or ignition.

These were to as the Model 5 (fifth year of which, for Harley-Davidson purposes, in 1904) with battery and the Model 5-A with mag and 28s, 5-B battery and 26s and 5-C, mag/26. The twin was called the 5-D.

In the single-cylinder racer was called the In 1912, things got real with both chain and drive being offered, and a mechanism designated by an X; all wheels the 28-inch variety. The basic was the Model 8, the mag-fired twin freewheel control and chain was called the Model X-8-E.

In we see the first use of the F letter, a 61-inch twin with two-speed In 1915, the J model appeared, the with three-speed transmission and ignition. That was also the of the first K model, a racing

In 1916, the year designation was from year of production to year, so it was not 12-F, but 16-F. models were available year: the F, J, E, R and T twins, and C, B and S singles. Harley was complicating things, as the E of was a racing single, while the E of was a one-speed twin.

The heck with this; let us with the alphabet and go right to see how many letters have used, and how many times. you see a /, that means the letter(s) was (FL), tertiary (FLH), To try to keep this under I will start with the that were in the 1920 and ignore what went on that date.

A (1926): 21-inch single (magneto

A (1960): TS (two …) Topper scooter

B (1926): 21-inch single

B (1955): TS single

/B Belt-drive Sturgis (ex. 1982 FXB)

C i.o.e. 35-inch single, order

C (1930): SV/OHV single

/C Custom, Classic or Caf

/CH Sportster (ex. 1958

D (1929): SV 45-inch twin

/D engine (ex. 1921 JD)

/D power (ex. 1930

/D Dyna Glide frame 1991 FXDB)

/DG Disc (ex. 1983 FXDG)

E OHV 61-inch twin

/E Electric (ex. 1964 GE, 1974

/E Police engine (ex. FLE)

F (1920): i.o.e. magneto ignition (dating 1914)

F (1941): OHV 74-inch

/F Battery ignition flat (ex. 1921 WF)

/F Footshift 1952 FLF)

G (1933): SV Servi-Car

/H Larger engine 1936 80-inch VHL, 55-inch KH)

/H More powerful (ex. 1955 FLH)

I injection (ex. 1995

J (1920): i.o.e. 61-inch (dating from 1915)

/J: ignition flat twin 1921 WJ)

/K: More powerful K (ex. 1955 K11K)

L Single-passenger sidecar (dating 1915)

/L: Higher compression (ex. 1936 EL)

M (1920): sidecar (dating from

M (1965): TS 50CC single,

/N: Newspaper delivery sidecar 1929 MN)

Aermacchi 250 Wisconsin
Aermacchi 250 Wisconsin

/N: Nostalgia (ex. FLSTN)

/O: Open-body commercial (ex. 1926 MO)

/P: Police

Q (1920): Two-passenger sidecar (dating from 1918)

R SV 45-inch twin

/R: Rubber-mount FX (ex. 1982 FXR Super

/R: Pseudo-racing model (ex. XR-1000)

/R: Racing model 1952 KR)

S (1926): OHV 21-inch, for purposes

S (1948): TS 125 single

/S: Sport (ex. 1978 FXS and

/S: Sidecar use (ex. 1936 ES)

T Twin-cylinder racer

/T: TS 165 single 1953 ST)

/T: Touring (ex. XLT, 1980)

U (1937): SV twin

V (1930): SV 74-inch

V (1994): DOHC 61-inch for Superbike racing

W (1920): SV flat twin (dating 1919)

W (1937): SV 45-inch

/WG: Wide Glide 1980 FXWG)

X (1957): OHV twin (usually used L; i.e. XL)

Y: Only letter used

Z (1973): TS 90CC Aermacchi

All the learned readers can now me for my inaccuracies and omissions, such as models, sidecars, package etc.

I also left out of the Aermacchi model designations, or would have been far complicated than necessary. Nor did I all alphabets in all models; there are too many.


You Asked the About Harley and Davidson

Lanett W. Draper (lwdraper@aol.com)wrote to

Could you please tell me the founders Harley and Davison from, as well as from counties their parents from?

I am assuming you meant to what countries, not counties.

S. Harley (1880-1943) was the son of emigre from England and grew up in Wisconsin with boyhood Arthur Davidson (1881-1950). The two men at the same Milwaukee manufacturing when, in 1901, they to build a motorcycle. William was a and Arthur was a pattern maker.

first effort flopped they learned that a bicycle frame was not strong and the engine they used was not big

In 1902, the first Harley-Davidson engine was built. Assistance on the design came from Ole who soon afterwards became a in outboard motors.

At this Arthur’s two older brothers the picture. They had been by the railroads. Walter Davidson was a machinist and William A. Davidson was a toolmaker.

The Davidson brothers sons of a carpenter from and it was their father who built the Harley-Davidson factory. Constructed in the back yard, the factory was a 10 x 15 shed with the words, Motor Co. painted on its door.

In the same year that and Orville Wright took machine to the air, the four of Harley-Davidson Motor Company three machines; and three were completed the following

By 1904, the company was also carburetors, marine engines and William Harley was quick to that the growing business expertise beyond that any of the founders had, so he enrolled in at the University of Wisconsin.

In 1905, the outside employee was hired and in production increased to 50 motorcycles, Silent Gray Fellows, at $200 each.

In 1907 soared to 152 motorcycles and the company Walter Davidson was named and shares of stock were among family members and the 17 employees. Stock sales and from Uncle James as the honey uncle because he was a Davidson provided the funding for Number Two, a 2300-square-foot When the building had been management got word that it was too to the adjacent railroad right-of-way.

The rounded up a few volunteers who simply up the building and moved it back a few

Arthur Davidson became manager of the new corporation; William A. was factory manager and William was Chief Engineer.

Another of interest concerning the founding fathers is that Walter was the most aggressive, tenacious and rider. Although the company did not in racing, it was active in endurance and Walter completed his — and the — first endurance with a perfect score. A later, Walter rode to in an economy run, posting the top of 188 miles per gallon.

William A. was the first of the four to …, in Walter died in 1942 and H. Davidson (son of William A.) the reins as company president 1942-71.

` William Harley in 1943, leaving his boyhood Arthur as the sole survivor of the founders. Arthur and his wife … in an auto accident in when Arthur was 69 years

Today, the best-known descendant of the four is Willie G.Davidson, to H-D afficionados as Willie G. He joined the in 1963 as Director of Styling and active in the industry. Willie G and his Nancy, are regulars at major and can most often be found at the of huge groups of autograph-seekers.

Aermacchi 250 Wisconsin
Aermacchi 250 Wisconsin
Aermacchi 250 Wisconsin
Aermacchi 250 Wisconsin
Aermacchi 250 Wisconsin
Aermacchi 250 Wisconsin


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