2013 Harley Davidson Knucklehead/Norley

2013 Harley Davidson Knucklehead

This example is called a Norley, it is a combination of a Norton frame and a Harley Davidson type engine and transmission. Norleys are typically found in Great Britan and the U.S., only a few dozen are known to exist. Most Norleys are typically a combination of the Norton Manx frame (manufactured from 1947 to 1962) and a Harley Davidson Sportster engine. The Norley on display has a S&S KN motor, which is a newer version of the classic HD Knucklehead engine produced by Harley Davidson from 1936 to 1947.

The original 61 cubic-inch E knucklehead engine ushered in the transition from Harley Davidson's the long-serving but under-powered side-valve flathead V-twin engine to the higher tech and higher powered overhead valve pushrod engines. While the 61 E series model included a number of other product innovations when it was introduced in 1936, it was its distinctive engine that gave it an unmistakable appearance and unbeatable nickname; the "knucklehead." The polished rocker covers to many resembled huge clenched fists to give the motor its name. Indeed, today many enthusiasts can instantly identify a knucklehead when they see one, but fewer recall the model designations that applied.

The Norton Manx frame on this bike has an Ohlins front and rear suspension, and period correct spoke wheels. The drum brakes typically found on the Norton have been upgraded with Brembo disc brakes. This reproduction was gifted to the museum in 2016. Such a motorcycle could easily find its way through Decker Canyon, Mulholland Drive or on Highway 150 from Santa Paula to Ojai. It is an excellent example of a tribute motorcycle and we are proud to have it in our museum.


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