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Saturday, December 7, 2019

Get to know the iconic Harley Davidson machines

When there is a convoy of big motorbikes on the highway, and it will be seen that the most prominent is the Harley-Davidson motorcycle which has a roaring sound coming out of its V-Twin engine that will be easily recognized and very distinctive even though it's far away from our hearing. So it is not excessive if many assume that the fierce look of Harley-Davidson motorcycle is partly derived from its machine.
An illustration of the classic Harley-Davidson motorcycle. (Picture from: http://bit.ly/2rmpbEI)
Indeed, Harkey-Davidson motorbikes are very easy to recognize through its typical V-Twin 45-degree engine, but did you know that the V-Twin engine has several changes or revolutions according to the shape of the chassis and models. But, not all machines will be discussed here, only a few are said to be iconic and famous machines of their time. Let's check it out! 

1. 1909 Atmospheric V-Twin 
(Picture from: http://bit.ly/33WSDOV)
The first engine from Harley-Davidson was a V-twin designed by HD's Chief Engineer, Bill Harley in 1908, right after he was graduating from the University of Wisconsin in 1908. This type of engine was produced in 1909, this was the beginning of Harley-Davidson coming into the world.

This engine with a capacity of 811 cc and capable of producing power of 7 horsepower is made for 27 units of motorcycles. And the motorcycle that was present at that time with a very simple construction that uses a separate gearbox and kick-starter. This engine is also known as the forerunner of the V-twin 45-degree engine lineage of Harley-Davidson.

2. 1911-1929 F-Head 
(Picture from: http://bit.ly/33WSDOV)
Followed by the birth of the F-Head type engine born from 1911 to 1929. The F-Head engine comes with a capacity of 1,000 cc and 1,213 cc.

This machine has also been refined and made of better iron castings materials.

This F-Head engine features a waterproof ignition system and is designed for use on public roads, the police and also for general sale.

3. 1929-1936 Flathead 
(Picture from: http://bit.ly/33WSDOV)
This Flathead engine type also has a unique feature, that is made without a valve above its cylinder head.

The valve is made sideways so that it can be easier when making repairs.

This type of engine can be seen in the Harley-Davidson motorcycles type WL and WLA in the 1930s.

4. 1936-1947 Knucklehead
(Picture from: http://bit.ly/33WSDOV)
After that came the Harley-Davidson engine is known as Knucklehead which was made from 1936 to 1947. The engine with a capacity of 990 cc and 1,200 cc called Knucklehead due to its cylinder head shape similar to the brassed knuckle that is usually worn on the hand to punch.

There are three types of Harley-Davidson motorcycles that use Knucklehead engines namely E, ES, and EL models.

5. 1948-1965 Panhead
(Picture from: http://bit.ly/33WSDOV)
Subsequently followed by the Panhead generation in 1948-1965 who began developing the "cranks" model. This type of engine also comes in two engine capacities, 990 cc, and 1,200 cc, but the power generated is bigger than the Knucklehead engine type.

The Panhead type engine is an advanced development of the Knucklehead engine type, and it uses aluminum cylinder heads, hydraulic valve, increased oil circulation and crankpin roller bearings for engine durability.

6. 1966-1984 Shovelhead 
(Picture from: http://bit.ly/33WSDOV)
Then there is the Shovelhead type engine which was made between
1966 and 1984 and has a capacity of around 1,200 cc. This type of machine can be said to be the successor or a modern version of Panhead with several changes.

Starting from the use of a larger valve, ported better, then there is a piston that is made stronger. The name Shovelhead because the engine, when viewed from an upside-down position, looks like a coal shovel.

7. 1984-1999 Evolution 
(Picture from: http://bit.ly/33WSDOV)
The next engine is Evolution, which was present in 1984-1999, which was the first largest engine with a cylinder capacity of 1,340 cc, which was made by Harley-Davidson. This engine is embedded in the Sportster models starting from 1986 but uses 883 cc and 1,200 cc.

Noted, this engine is the first time Harley-Davidson uses Computer-Aided Design in the manufacture of motorcycles that are more efficient and increasing the power and torque.

8. 1999-2017 Twin Cam 
(Picture from: http://bit.ly/33WSDOV)
Next is the Twin Cam type, which was born between 1999 and 2017, there are two Twin Cam models. First, the engine with a capacity of 1,450 cc and still using a carburetor and refined by Twin Cam 1,584 cc injection technology starting in 2007.

From the beginning, Harley-Davidson never made the engine cooling system with a radiator model. But in 2001, they made a new engine with a radiator cooling system, so the engine was called as Revolution engine with a capacity of 1,340 cc, and this type of engine used by the V-Rod, and continued by the younger generation of Street 500 and Street 750.

9. 2017 Milwaukee-Eight 107 
(Picture from: http://bit.ly/33WSDOV)
The most recent generation of engines used by Harley-Davidson motorbikes is Milwaukee Eight 107 which was produced in 2017. This engine is a refinement of the 1999 Twin Cam-type engine. And the amount of power that can be spewed from this engine can reach 90 horsepower. 

The Milwaukee name is derived from the location of the engine manufacturing plant and the term Eight, it means that in each cylinder there are 4 valves, while the engine has two cylinders making a total of 8 valves. And the 107 symbolizes the engine capacity that reaches 1.753 cc. This type of engine is mounted on the Road King, Street Glide Special, Road Glide Special and Road Glide Ultra models.

Well, for those of you who are curious and want to hear the sounds of the iconic machines from Harley-Davidson that have been briefly discussed above, please check the video below!
Kept spur your adrenaline on the power of the two-wheeled monster and stay alive with true safety riding. May God will forgive Your sins and so does the cops..... *** [EKA | FROM VARIOUS SOURCES | ]
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