What makes Royal Enfield’s constellation so special?
Royal Enfield’s constellation is a beefy beast with the personality and aggression of a Pontypool rugby prop forward from the Sixties – big hearted and ready to trample the opposition. The 692cc engine is squeezed into a frame derived from the 350 Bullet, and this punchy and muscular motorcycle is a piece of late 1950s brutalism, covered in chrome.
Did you know Royal Enfield made Britain’s biggest twin?
It seems to be a little-known fact that for 10 years, Royal Enfield made Britain’s biggest capacity parallel twins. The 693cc Super Meteor and Constellation held the title from 1953 to 1962, when Norton launched its 750 Atlas. (Enfield came back with the 750 Interceptor.)
What was the last year for the Ford constellation?
The final iteration of the Constellation was in 1963. With production of the Interceptor in full flow, the Constellation was repositioned as a sidecar tug, with the Super Meteor-spec 7.25:1 compression 40 horsepower engine, coil ignition, big fenders, steering damper and revised “sidecar” fork moving the front axle farther forward.
Why did the Ford constellation have such short pushrods?
This gave the designers the chance to fit the camshafts higher and make the pushrods shorter, even though the Constellation had a long stroke engine. The barrels were so deeply set in the crankcase that they were almost oil-cooled.
What does oil inside the crankcases mean?
With the oil inside the crankcases it meant that once things were hot, they stayed hot. The frame used the bolted together engine and gearbox as a stressed member with no lower frame rails. The engine produced the kind of vibration you got from any 360? parallel twin, though the Constellation was better than most.
What is a 692cc motorcycle?
The 692cc engine is squeezed into a frame derived from the 350 Bullet, and this punchy and muscular motorcycle is a piece of late 1950s brutalism, covered in chrome. Advert.
How many bullets did the Constellation have?
The engine of the Constellation was essentially two 350 Bullets, with two separate cast-iron barrels and twin alloy heads. There was barely an inch of spare space around the mill, though you could remove the tappet covers and set the valve clearances without taking the tank off.
Did the Constellation have a new crankcase?
Advert. The Constellation had a new design of crankcase, as Royal Enfield found their old dies were worn out.
Did the Constellation have a long stroke engine?
This gave the designers the chance to fit the camshafts higher and make the pushrods shorter, even though the Constellation had a long stroke engine . The barrels were so deeply set in the crankcase that they were almost oil-cooled.
Does a bike need an oil tank?
This meant that the bike didn’t need an external oil tank, which kept the plot compact, removed the need for external oil lines and allowed the use of a cylindrical oil filter, but did reduce the oil capacity to four pints. Advert. With the oil inside the crankcases it meant that once things were hot, they stayed hot.
What year was the Royal Enfield Constellation?
1959 Royal Enfield Constellation. Bought as a basket case, Tony Cording is proud to have his Connie back on the road. Tony Cording and his restored one-of-a-kind Royal Enfield Constellation.
How many cc is the Enfield Twin?
Whether or not its 693cc engine capacity was chosen to keep the Enfield Twin ahead of its 650cc competition, the choice had technical and production merit. The 70mm bore meant the engine could use much of the top end technology of the 350 Bullet, including the pistons and combustion chamber design.
What is the 4 speed gearbox on an Enfield 500 Twin?
In typical Enfield fashion, the 4-speed Albion gearbox bolted right to the back of the engine — known as “semi-unit.” The frame, front and rear suspension and cycle parts followed the same year’s Bullet single pretty closely, including a similar open loop frame. It’s worth noting that Enfield (along with AJS/Matchless) was one of the first to use swingarm rear suspension, six years before BSA, Norton and Triumph. The 500 Twin was smooth and reasonably quick, weighing 390 pounds dry and making 25 horsepower, giving it 85mph potential, according to period reports.
What engine did Royal Enfield use in 1958?
Royal Enfield responded with one more power boost from the 700 engine when the Constellation arrived for the 1958 season. Based on the Super Meteor, compression went from 7.25:1 to 8.5:1, and it had hotter cams, a siamesed exhaust system, and an Amal 10TT9 racing carburetor.
What gas tank did the Constellation use?
The Constellation used the same frame and running gear as the Super Meteor, but replaced the painted fenders with chrome-plated steel blades. The new 4-1/4 Imperial gallon (5 gallon U.S.) gas tank was also chromed, and featured a broad top panel finished in “polychromatic burgundy” with gold pinstriping.
How many camshafts did the Enfield use?
Like Triumph’s twins, the Enfield used two camshafts, but driven by a single chain instead of gears. The cams were removable through the primary side without splitting the cases via a pair of circular access plates. The pushrods, one at each corner of the engine, operated the four valves via rockers, each accessed by an alloy cover.
What is the Enfield ignition system?
Unusual for the time was the Enfield’s ignition system. Instead of the usual magneto was a coil ignition system fed by a 6-volt battery charged by a DC generator. Contact breaker points were mounted inside a distributor driven off the generator.