1942 Harley-Davidson ELC Knucklehead: Canada’s Rare Military Sidecar
Working for Harley-Davidson during the World War II era must have been an exciting time. Harley engineers were not simply building the same civilian motorcycles in olive drab. They were adapting stock machines for wartime use, building prototypes, and testing small runs of specialized equipment. Everything from military variations of standard motorcycles to unusual projects, including dual-Knucklehead-powered tanks and three-wheeled military motorcycles, passed through that world.
One of the most interesting examples is the 1942 Harley-Davidson ELC, a Knucklehead-powered motorcycle built for the Canadian Armed Forces. It belongs with the larger story of military motorcycles and service machines, but it is not just another WLA, WLC, or civilian big twin in war paint. The ELC was a very small Canadian military sidecar machine with its own combination of Knucklehead power, WLC-style equipment, and unique sidecar details.
A Rare Canadian Knucklehead from Harley’s Wartime Experiments
The ELC sits in the narrow space between full wartime production and experimental military engineering. Harley-Davidson’s 45 cubic inch flathead WL military machines became the familiar Allied workhorses of the war, but Canada also received a small number of 61 cubic inch OHV Knucklehead machines. That larger engine is what gives the ELC its unusual character. It had the look of a purpose-built military outfit, but under the equipment was a standard 61 cubic inch Harley-Davidson Knucklehead engine.
The Model ELC was built in 1942 for the Canadian Armed Forces, and only forty-four units were sent to Canada. Later production summaries usually expand that slightly. Harley reportedly built 45 ELCs, with 44 delivered to Canada and one prototype retained by the factory. That keeps the original forty-four-delivered figure intact while explaining why some references list the total ELC production as 45.
The related U.S. Army ELA Knucklehead program was also tiny, with only a handful reported in production summaries. In practical wartime use, the 45 cubic inch WL military machines were easier to standardize and support. The ELC, by contrast, was a special-purpose Canadian big twin that never became a broad production model.
More Than an Olive-Drab Knucklehead
At first glance, you might think the ELC is just a standard Knucklehead painted olive drab with some WLC accessories thrown on. That is what makes the motorcycle so interesting. The more closely you look, the more it becomes clear that the ELC borrowed some parts and ideas from the 45-cubic-inch military Harleys, but it was not merely a parts-bin conversion.
The ELC reused a military vocabulary that would have been familiar to anyone who knew the WLA and WLC: blackout-style lighting, a front fender tool box, rugged sidecar equipment, stands, and interchangeable wheels. At the same time, it wrapped all of that around a 61 cubic inch Knucklehead engine and a sidecar layout built for Canadian military service. That combination is why the model stands apart from both a civilian EL and a standard WLC.
Sidecar Layout, Tandem Seats, and Quick-Exit Details
Starting with the seating arrangement, the ELC features tandem seats rather than a single solo saddle. The sidecar is mounted on the left-hand side of the motorcycle, which gives the whole machine a distinctly British-pattern military look. The sidecar body itself is also different from a civilian sidecar. Its side cutouts appear to be designed for quick exit, presumably useful if the passenger had to get out fast while under fire or while working around the machine in military service.
The left-side view also shows the practical military thinking built into the outfit. The ELC has both front and rear stands, and the wheels were interchangeable. On a sidecar outfit working in field conditions, that kind of interchangeability matters. It means the machine was not being treated as a showpiece or a lightly adapted road motorcycle. The equipment was chosen so the motorcycle could be serviced and kept moving.
Knucklehead Power with Military Equipment
The engine is a standard 61 cubic inch Harley-Davidson Knucklehead mated to a three-speed transmission with reverse. That reverse gear is an important sidecar detail. A loaded military sidecar outfit is not something you want to muscle backward by hand if you can avoid it, especially on poor roads, in mud, or in close quarters around depots and field equipment.
The air box looks very similar to the unit used on the WLC, but on the ELC it is mounted toward the front of the engine instead of at the rear. That change was likely made to provide clearance for the kicker pedal. WLCs are set up with the air box on the left side of the motorcycle, so they do not have the same clearance problem. The ELC’s left-mounted sidecar and big-twin engine layout created a different packaging problem, and the forward air box placement appears to solve it.
The front forks are XA type with big twin rockers, another detail that separates the ELC from a plain civilian Knucklehead in military paint. The muffler is mounted upside down, a wartime trick meant to help limit dust trails while riding. Like the WLC, the ELC also uses British-style lighting and a front-fender-mounted tool box. Each of these pieces makes sense on its own, but together they show how much work went into adapting the big twin for a very specific military role.
Modern surviving or restored examples are uncommon, and each one has the potential to add something useful to the historical record. A correct ELC is not just another military Harley-Davidson. It is a small-batch Canadian Knucklehead sidecar outfit from a moment when Harley was still testing the limits of what its big twins could do in military service.
A Small Batch with a Big Place in Wartime Harley History
The 1942 Harley-Davidson ELC is easy to summarize but difficult to reduce. It was a Canadian military motorcycle, a Knucklehead sidecar outfit, a WLC-influenced big twin, and a one-year wartime production oddity. It looked familiar enough to be mistaken for an olive-drab Knucklehead with military accessories, but the sidecar layout, reverse transmission, forward air box, XA-type front end, British lighting, and practical field-service details tell a more specialized story.
That is what makes the ELC worth preserving in detail. Only forty-four were sent to Canada, and the broader production record appears to stop at 45 total machines. For Harley-Davidson, it was one of several wartime experiments. For Canadian military motorcycle history, it was a rare attempt to put Knucklehead big-twin power into a purpose-built service outfit. For anyone studying old military Harleys today, it remains one of the most interesting and least common machines to come out of Milwaukee during the war.