AMF Harley-Davidson Shortster (MC-65)

 

Years built: 1971 only (model year 1972 only)
Bikes produced: 8000
Price in 1972:  
Vehicle Ident. # (VIN): 5C
Spark Plug: Harley-Davidson 5-6
Gas Capacity: 1.4 US Gallons, Reserve 1.75 Quart
Transmission: Constant Mesh, 3 Speed
Carburetor: Dell'Orto ME 18 BS
Electrical System: 6V
Saddle Height:  

Engine

Model designation letter: MC
Type: 2-Cycle, Single Cylinder, Air Cooled
Bore: 1.732 Inches (44mm)
Stroke: 1.654 Inches (42mm)
Piston displacement: 63.86 Cubic Centimeters
Compression ratio: 8.5:1
Lubrication system: premix 1:25
Starter system: kickstart, left side

Dimensions and Weight

Overall length: 56.1 Inches
Handlebar width: 32.5 Inches
Ground clearance: 5.7 Inches
Wheelbase: 39.2 Inches
Seats: 1 person
Front suspension: Telescopic NOT oil dampened
Rear suspension: Swinging arm, oil dampened stereo shocks
Fuel tank: 5,3 litres (1.4 gallons) Total
Transmission:  
Front fork:  

Transmission System:

Clutch: wet, multi plate
Gear ratios: 1st: 20.0 to 1, 11.5 to 1, 7.6 to 1
Gearshift pattern: 1 up - 2 down, left side

Wheels and Brakes

Front wheel tire: 3.00 x 10 (Pirelli MT 74)
Rear wheel tire: 3.00 x 10 (Pirelli MT 74)
Front brake: internal expanding
Rear brake: internal expanding
Rims (Front & Rear): Disc Wheel, 2 Pieces, WM1= 1.6x 10"
Tire pressure (Front): 18 PSI
Tire pressure (Rear): 22 PSI

The Shortster (MC-65) was available in three different colors. In yellow, sparkling red and in sparkling blue. Fenders were always stainless steal. The gas tank decals were always bright red and in a "flame style".

The Shortster was built in 1971 oand sold as 1972 model year. This bike was produced for the North American market only. The engine is basically the same as on the M-65 or Leggero.
There are some slight differences between an early Shortster compared to the later versions. The most eye catching difference is the slightly different frame in the rear. Early models do have a different headlamp and smaller reflectors. Picture No. 13 shows an early MC65!


All bikes had a large full size 140mm headlight which in my opinon looks a little oversized for such a tiny toy bike. The later X90s were fitted with a more harmonic looking 105mm headlight
.

With the name "Shortster" the marketing department tried to make a transition to the "Sportster". If you look closely to the advertisments of that time, they intended "to catch kids" and spark their passion for motorcycles and keep them as customers, when they are old enough and ready for a full size motorcycle. In one advertisment you can see a kid standing beside his Shortster and the reflection in the water in front of them shows a Sportster.

The Shortster has a three speed gearbox and is shifted from the left side. The first gear is about neutral, second and third gear below. It was not equipped with a fuel pump as the later X90 and so you have to premix the oil/gasoline manually when filling the gas tank.

Picture No. 15 is from Eddi Boomwhowers archive and shows how the Shortster was delivered to the HD-Dealers in 1972.

Please contact the webmaster if you need a gas tank decals or the rear fender decal for the Shortster.


Blue Shortster restored by Greg1 Blue Shorty, right view2 3 Top View4
Blue Shortster, Florida5 Front View6 Engine, right side7 Engine, left side8
Todds Shorty9 yellow submarine ;-)10 Jerry11 Jerry12
Red (Maroon)13 commercial14 Shorty in Box15  

Thanks to Greg from Florida for the pictures of the restored shortster.
Thanks to Todd for the picture of his yellow Shorty.
Do you have further information? E-Mail: webmaster@aermacchi-world.de

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