AJS 500 V4 Review Motorcycle Trader New Zealand

25 Апр 2015 | Author: | Комментарии к записи AJS 500 V4 Review Motorcycle Trader New Zealand отключены

AJS 500 V4 Review

The product of this of fancy took a while to win a This was due to a desultory development that was first interrupted by then disappointingly terminated by the ban on forced induction. In due course it did lead to the creation of the bike won the first-ever 500cc World

It was 1949 and the manufacturer was AMC — its AJS E90 Porcupine remains the only ever to have won the 500cc title. The same company’s GP contender, the supercharged 50-degree AJS V4 a Zoller compressor) was the first to lap a classic road race at over 100 mph. The rider was Rusk and it took place at the Ulster GP, just 15 days the outbreak of WW2.

Fortunately the surviving examples of both the four and post-war twin, are in the of someone who regularly puts through their paces in Sammy Miller, their is the fortunate man.

The story of the of one of the crown jewels at the Sammy Museum, the sole survivor of the two AJS 500 V4s made, is a typical Sammy saga that has a personal Walter Rusk’s mother half a mile from our home in Belfast, recalls so he was a local hero even if I was too to see him race the V4 — though I all about the bike and how fast it

After the war, when I my pushbike to the Clady circuit I saw and the Porcupines in action, which than anything else is switched me on to bikes and I dreamed of one day able to ride one myself. The I’d ever be able to down the two of them was a dream true.

The key to doing so was the late West, who via his job as AMC sales director not obtained one of the title-winning E90 Porcupines, but the supercharged V4 engine of the ex-Rusk he’d raced postwar. In the Miller acquired both the Porcupine and the V4 motor. The sohc V4 had seized a big-end in its last necessitating manufacture of a complete new assembly, with the original refreshened with rings a C90 Honda parts bin.

and his team carefully rebuilt the and coupled it, in the absence of the Burman to a postwar AJS 7R four-speed gearbox. New and oil tanks were made to the shape and the newly restored V4 its born-again debut in the 1980 TT Lap of It seized at Crosby owing to oil but not before Sammy had had time to the handling was distinctly lively.

its rebuild the supercharged AJS has spent of a century as a rolling reminder of Mr. resourcefulness and has publicised his superb via ongoing displays including, to Sammy’s generosity, one in my honoured at the annual Goodwood Festival of

Lord March’s annual of automotive exotica proved an venue to sample this mechanical jewel. Starting it is an skill, especially in a crowded You must first prime the to get it to fire, so starting from requires a long-distance push, the throttle held wide making sure you’ve the low-set remote float in front of your left

Eventually the engine bubbles before suddenly catching a high-pitched rumble from the delicate megaphones. These the original less horny-looking pipes. Once firing on all the supercharged engine does in very suddenly. You then to blip the throttle furiously to the plugs clean, all the time to the whine of the Zoller compressor.

no temperature gauge, so while in push-start days with the of starting from cold want to make sure the came to the line hot to trot, it also be important to cool the radiator so as not to risk what was a perennial problem — a head gasket through it too long before the flag. Rusk was a big man and he’d have to be to get the AJS off the line if the blower were than ideally primed.

The four-cylinder bike as a whole less massive when seated on it than when from the side, and the engine is compact in reality. It’s slim and thanks to the narrow-angle format, has a rational 55-inch resulting in a relatively close-coupled position.

Notch bottom on the AJS gearbox, with its slow but one-up right-foot shift and you’ll discover the dry clutch has a take-up. This lets you up gently to the startline, all the time the throttle so as not to let the plugs foul. The motor has a lusty pull under 2000rpm to my appointed rpm rev-limit and peak power of 55

Dry weight is a meaty 405 lb. The real is how modern and sophisticated this engine feels. It truly its age.

In spite of the lack of a there’s no undue vibration, and no rattles and whirrs or extraneous noises. No wonder Honda the V4 engine format with a crank more than 40 later. In addition to the benefits of torque, and more compact it also offers improved thanks to the engine’s compacted

You do feel that in tighter the AJS swings more readily the bend than bulkier fours like the ’50s and MV Agusta 500s. It’s not as as a single, but no heavier-handling than a

But that’s in slower turns. the V4 AJS is a real handful, even, and in a straight line. No wonder had suggested I give that big steering damper knob a twist just before the Taught always to do what I was by my elders and betters, I duly it up about three-quarters tight as I to the line.

After a hint of rounding the second right-hander, I put down to not having the tyres up properly, the AJS started to buck and not altogether gracefully in a straight The bumpy surface threatened a tank-slapper by asking the plunger end and girder forks to cope high-speed road rash and the V4 Rusk Style muscling submission on the approach to the first

It must have looked to the champagne-quaffing dignitaries in the Sponsors’ but to me it underlined what a hero Rusk must have To manhandle such a self-willed for three-and-a-half hours around laps of the TT Course, or for more 70 miles in the lead of the Ulster GP is some achievement.

The V4 AJS was my first on a period supercharged 500 since I a BMW Kompressor, but comparisons are difficult as was 17years ago. You must your riding technique. there’s no such thing as The throttle must either be open or switched right and I was vividly apprised of this the slow left in front of House.

I’d been trying to some momentum with a of throttle, after using the effective twin leading-shoe brake and SLS rear companion to The AJS didn’t appreciate this one spluttering and coughing till made the turn and twisted the wide open again, its throat and resuming normal until I had to slow again for the flick. By now I’d learnt my

Squeezing the front brake hard, and stomping on the rear I closed the throttle tight negotiated the turn, then it wide open again as as I’d hit the apex. Brake, and squirt, that’s the secret to success. On — or off.

the 54 bhp eventually produced by the unblown Porcupine was the same as the output of its 30 lb. supercharged predecessor, I can’t thinking after riding it dumping the watercooled V4 engine of prewar AJS GP racer in the wake of the ban on supercharging, represented a truly opportunity by AMC management. This was the first truly modern motorcycle engine, which shorn of a supercharger could provided the basis for a road-bike was years ahead of its time, in 650cc or even 750cc

Indeed a pity, but full to Sammy Miller for ensuring such a significant step in history is preserved for us all to admire and seeing in action. Make you catch his next organ

Photo credit: Kyoichi

AJS 500 V4 — Specification

Engine: watercooled sohc 50-degree V4 four-…, with 180-degree two valves per cylinder, chain drive and chain-driven Zoller compressor

Dimensions: 50 x 63 mm

Capacity: 495 cc

torque: 55 bhp at 7,200 rpm

Compression 7.9:1

Carburation: 1 x 1 1/16 mm Amal TT with remote chamber

AJS Model 20 500
AJS Model 20 500
AJS Model 20 500
AJS Model 20 500
AJS Model 20 500

Interesting articles

Tagged as:

Other articles of the category "interesting":

Our partners
Follow us
Contact us
Our contacts


Born in the USSR


About this site

For all questions about advertising, please contact listed on the site.

Motorcycles catalog with specifications, pictures, ratings, reviews and discusssions about Motorcycles.