The 500 cc G-45 was built by Matchless as a stable-mate to the very successful 350cc AJS 7R road racer, and was a contemporary of the better known Manx Norton. The engine evolved from the road going G-9 twin, and the G-45 was marketed as “The only multi-cylinder road racer available to the privateer” Although it looked good on paper, they were plagued with problems, and were eventually replaced with the more successful G-50 single, which was a 500 cc version of the 7R. Interestingly, the G-45 produced 52 bhp right out of the chute, while the initial G-50 only produced 48. The G-50 was close to 40 lbs. lighter though, and more hp came its way as development continued. The G-45s are very rare, as only 80 were built, and only about 30 survive, most of which are in museums. This is one of about six world-wide that is a runner. It is well sorted out, and is used in vintage racing. It is faster than its rider.

Impressions from the Saddle
Being a road racer, the Matchless requires bump starting. I find that there’s usually help available when you fire up an unusual bike. It has twin GP carburetors, so it takes a bit of a push when cold, as there are no choke slides fitted. You must warm it up considerably, as the R-40 castor is pretty thick, and needs to be warmed, or the resulting oil pressure will have it coming out on the rear tire, which isn't too pleasant on a race bike. The dry clutch releases perfectly, and the gear change is a pleasure. The riding position and seat are very comfortable for a racer, and the brakes are awesome. Power delivery is very smooth, with no “megaphonitis” like a Manx. It vibrates like most vertical twins, but once underway that's barely noticeable, due no doubt to the adrenaline rush that usually accompanies racing. Its very fast, and seems to have as much acceleration as a short stroke Manx. The handling is excellent, and with modern race compound rubber, it can be laid over a long way, and cornering clearance is excellent. It’s also oil tight.

Listen to the Matchless.

Listen to the Matchless drive by.