TRIUMPH ROCKET III
Posted on 7:39 PM by Niranjan
ENGINE
Triumph has long been known for its innovative three-cylinder designs, but the DOHC liquid-cooled engine breaks new ground. Each piston measures over 4 inches .Triumph claims 147 ft.-lbs. of torque at 2,500 RPM and 140HP at 5,750 RPM for the oversquare fuel-injected mill. All this power should give the 704-pound (dry) juggernaut a 0-60 time of around 2.8 seconds, and a 0-100 time of just over 7 seconds.Power is laid down through a five-speed gearbox, shaft drive (a first for Triumph) and an impressive 240/50-16 rear tire.Stopping the beast are twin 320mm discs and four-piston calipers from the firm's Daytona 955i sportbike in the front, and a 316mm disk with a twin-piston caliper out back.Cruiser-style ergos should make this performance easy to handle. Seat height is set at a surprisingly low 29.1 inches, and the reach to the forward-mount footpegs and pullback handlebars.
DESIGN
They started work with David Stride, Gareth Davies and Rod Scivyer, building on the unusual configuration of the Speed Triple's twin headlights, working around an in-line three cylinder engine. At the start of the project in-line four and a V6 engine configurations were looked at but the longitudinally mounted triple design quickly took hold and the design concept code named C15XB Series S1 was born. Mockett experimented with ‘futuristic’ styling that included "raygun" mufflers and a large chrome rear mudguard, but consumer focus groups didn’t like it - although the concept was generating a lot of interest.
The model was a simplified version with a more traditional rear mudguard and several features that were to make it through to the final design. Once again, the feedback from market research was that it was still too radical so the lines were simplified and smoothed out to create the next Series . This was agreed as the final look and with a few refinements, the project started in earnest.The final design of the bike prototype had a large tubular steel twin-spine framed, designers are responsible for designing the gearbox and shaft drive to a 240/50ZR16 bike specific rear tyre. High specification front brakes were twin four-piston callipers with 320 mm floating discs and the rear brake, developed specifically for the purpose, was a single twin piston calliper and 316 mm disc. Ride handling is controlled by purpose built rear shocks and 43 mm 'inverted' front forks
SPECIFICATION ENGINE Type Liquid-cooled, DOHC, longitudinal in-line 3-cylinder, 12 valves Capacity 2294cc Bore/Stroke 101.6 x 94.3mm Compression Ratio 8.7:1 Fuel System Multipoint sequential electronic fuel injection Ignition Digital – inductive type – via electronic engine management system TRANSMISSION Primary Drive Gear Final Drive Shaft Clutch Wet, multi-plate Gearbox 5-speed DIMENSIONS Length 2480mm (97.6in) Width (Handlebars) 880mm (34.6in) Height 1150mm (45.3in) Seat Height 740mm (29.1in) Wheelbase 1690mm (66.5in) Rake/Trail 32ยบ/152mm Weight (Dry) 320kg (704lbs) Fuel Tank Capacity 25 liters (6.6 gal US) PERFORMANCE (MEASURED AT CRANKSHAFT TO DIN 70020) Maximum Power 142PS (140bhp) at 5,750rpm Maximum Torque 200Nm (147ft.lbf) at 2,500rpm