Harley Davidson Ironhead Sportsters 1957-1986 Motorcycle Models XL XLH…

1 Апр 2015 | Author: | Комментарии к записи Harley Davidson Ironhead Sportsters 1957-1986 Motorcycle Models XL XLH… отключены
Harley-Davidson XR 1200 Concept

Harley Ironhead Sportsters

The Engine. The Last Real

As you may have guessed, this website is dedicated to the all-time and meanest V twin Harley engine . the Ironhead .

Sportster (don’t worry, we’ll it short. )

Before Sportsters: The Model K

The history of the Sportster with its predecessor, the Model K.

The Model K was introduced by the Harley Motor Company in 1952 in to the invasion of the American motorcycle by lighter and faster British like BSA, Norton and The 1952 Model K featured a 45 cubic inches (750cc) V-twin engine of pre-war

More? Click HERE to Joe’s 1956 Harley KHK Album

More on Flatheads? Click for the Flathead Bobbers Site

The Harley Sportster XL Series

In Harley Davidson introduced the XL Sportster motorcycle which very similar to the Model K except that the 54 cubic (883cc) side-valve V-twin with its aluminium heads and was replaced by the 54 cubic inches overhead valve (OHV) which featured iron and cylinders. Otherwise, the 1957 XL had the same basic frame, case, right foot right side drive telescopic front fork, suspension and brake drums as the Model K.

In 1958 Harley the Sportster XLCH. Many say the CH stands for Competition Hot while say the H stands for High pressure. In any the XLCH is a stripped-down lighter and version of the XL, with a staggered exhaust and peanut gas tank .

The Sportster XLH was the heavier touring of the Sportster XLCH .

1972: Modifications and 1000cc

In 1972 the Ironhead 55 cubic inch overhead-valve engine was beefed up to 61 inch or 1000cc.

Harley modified the Sportster frame the cast steel connection at the top rear of the frame (i.e. the saddle) was replaced by a U shaped and welded connection made of strip. While officially frame design change place in the year 1972, delivery of Sportsters with the old lasted until well 1973.

The stamped and welded U connection underneath the saddle of the was not a big success. A few months after its the stamped and welded U shaped appeared to be not strong enough to the dynamic and cyclic vertical introduced during riding by the shocks and heavy rear

This forced the Motor to recall all newly delivered back to the dealers who were with steel reinforcement that had to be welded in place to strengthen the support points of the shock absorber and rear strut.

1974: Right Shift Moves to the Left

the Sportster Ironhead engine was in 1957, she inherited the whole end — including right shift — from her predecessor Harley Davidson KH, KHK and XR motorcycle models. These had their roots deep flat track racing, why they had the right foot

Harley-Davidson XR 1200 Concept

In the early 1970’s, the US DOT mandated side shift for all new motorcycles, for reasons of safety. In 1974 the Company switched from to left, although you shouldn’t be to see a 1974 Sportster with foot shift. That’s a 1973 model delivered and in 1974.

From 1974 until Harley Davidson applied a crude solution to switch the from the right to left by running a secondary shaft the frame, which was connected to an long shift lever as on the photograph. Only in the year Harley redesigned the transmission box to the gear shift shaft to to the left.

Chris from

The last year of the right shift was 1974. 1975 and was the years where the linkage was and 1977 was the 1st year of the through the left hand shift.

I recall more than one in the mainstream press during the mid predicting that the left shift requirement would doom for the traditional Sporty, ha. was also the last year of the front disc.

I remember as a twenty something lusting a 1974 Sportster brand new on the floor, especially the lean model with that but impossibly uncomfortable seat.

The was possibly a better built as Harley struggled to rectify the quality control of the 1971 to years, and also didn’t the problem of the unsplined gearshift shaft.

More that one used to curse at their 70’s Sportsters when the lever would slowly its way around the gearshift shaft, developing stress cracks overtightening.

1979: The Sportster Modified Once More

So, around 1979 another to the Sporty frame design place whereby the stamped and connection underneath the saddle was by an inverted triangle constructed steel tubing, like on many British and Japanese In 1982 this triangular design was revised to improve the of the rear shock support

1986: End of the Ironhead — The Real Harley?

Harley-Davidson XR 1200 Concept
Harley-Davidson XR 1200 Concept
Harley-Davidson XR 1200 Concept
Harley-Davidson XR 1200 Concept


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