Clymer Manuals Ducati 750GT Classic Motorcycle Video Walk Around
Clymer Manuals got a close-up look at Harold Johnson's 1972 Ducati 750GT. This classic Italian motorcycle was on display at the 2013 HoAME Vintage Motorcycle Rally. This Ducati twin was presented the Best Ducati Award from Reno's PowerSports KC.
Ducati 750GT on Ducati.com
While origins are often cloaked in mystery, the precise evolution of the Ducati 750 GT is still discernible. The bevel-gear twin cylinders with a 90° V configuration, long known as an "L-twin" configuration, have a precise date of birth: March 20, 1970. British historian Ian Faloon relates that Fabio Taglioni drew the first sketch of what is perhaps his most famous and best loved engine, which over the years was to acquire the affectionate name of "pompone" ("big pump"), on the last day of winter 1970.
It was not long before the prototype was on the bench. It was a twin cylinder (really, a motorcycle engine's ideal structure) arranged longitudinally and in a 90° V configuration. As far as balance went, this was also the best choice.
Taglioni's method was direct, logical, and practical. He envisioned the bike as an essential sports machine. The distribution used the same single overhead camshaft driven by bevel-gear as the single-cylinders, while the capacity of 750 cc was obtained with a bore and stroke of 76 x 75 mm. The prototype was built rapidly. The result: a very personal sort of motorbike in which the engine played the central role, even stylistically.
The final bike was very similar to the prototype. The GT 750 appeared in June 1971. Its frame was more proportionate than that of the prototype, while the carburetors were 30 mm Amal Concentrics. It was also fitted with a front Lockheed disk brake. Its very name, Gran Turismo, immediately revealed that it was no sports bike, but the potential of this twin was immediately apparent to its enthusiasts.
Ducati on Wikipedia
Ducati Motor Holding S.p.A. is an Italian company that designs and manufactures motorcycles. Headquartered in Bologna, Italy, Ducati is owned by Audi through its Italian subsidiary Lamborghini
Ducati is best known for high performance motorcycles characterized by large capacity four-stroke, 90° V-twin engines, featuring a desmodromic valve design. Ducati refers to this configuration as L-twin because one cylinder is vertical while the other is horizontal, making it look like a letter "L". Modern Ducatis remain among the dominant performance motorcycles available today partly because of the desmodromic valve design, which is nearing its 50th year of use. Desmodromic valves are closed with a separate, dedicated cam lobe and lifter instead of the conventional valve springs used in most internal combustion engines in consumer vehicles. This allows the cams to have a more radical profile, thus opening and closing the valves more quickly without the risk of valve-float, which causes a loss of power that is likely when using a "passive" closing mechanism under the same conditions.
While most other manufacturers utilize wet clutches (with the spinning parts bathed in oil) Ducati previously used multiplate dry clutches in many of their motorcycles. The dry clutch eliminates the power loss from oil viscosity drag on the engine even though the engagement may not be as smooth as the oil bath versions but the clutch plates can wear more rapidly. Ducati has converted to wet clutches across their current product lines.
Ducati also extensively uses the Trellis Steel Frame configuration, although Ducati's MotoGP project broke with this tradition by introducing a revolutionary carbon fiber frame for the Ducati Desmosedici GP9.
Clymer on the lift didn't have to go far to attend the 2013 Heart Of America Motorcycle Enthusiasts club 22nd Annual Vintage Motorcycle Show. Classic vintage antique motorcycles motorcycle bikes British, German, Japanese, Italian, European, American motorcycles were all on display. Manufacturers included Honda, Yamaha, Suzuki, BMW, Harley Davidson, Vincent, Triumph, BSA, Norton, Brough Superior, ndian, Cushman, Vespa, Laverda, Puch, Lambretta, MV Augusta, Ducati, Matchless, Zundapp, Moto Guzzi AJS and more. There were 100% perfect restorations,bike ridden in, a few trailer queens, full-on customs, cafe racers, choppers, bobbers, trials bikes, dirt bikes, road racers...any type or style motorcycle you could image.