Ducati 750 TT1 (1981-84) vs Triumph America (2007-08) vs Indian Springfield (2018-19)
Comparison technical specifications
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| Make: | Ducati | Triumph | Indian |
| Model: | 750 TT1 | America | Springfield |
| Years: | 1981-84 | 2007-08 | 2018-19 |
| Engine: | Four stroke, 90°“L”twin cylinder, SOHC, desmodromic 2 valves per cylinder, belt driven | Four stroke, parallel twin cylinder, DOHC, 4 valves per cylinder | Thunder Stroke™ 111 49˚ V-Twin |
| Capacity: | 748 cc / 45.6 cu in | 865 mm / 52.8 cu in | 1811.cc / 111 cu-in |
| Bore x Stroke: | 88 x 61.5 mm | 90 x 68 mm | 101 x 113 mm |
| Compression Ratio: | 10.2:1 | 9.2:1 | 9.5:1 |
| Induction: | 2 x 41 mm Dell'Orto-Malossi carburetors | Multipoint sequential electronic fuel injection with SAI | Electronic Fuel Injection System Closed loop fuel injection / 54mm bore |
| Starting: | Electric | Electric | Electric |
| Clutch: | Wet, multiplate | Wet, multiple discs, cable operated | Wet, Multi-Plate |
| Transmission: | 5 Speed | 5 Speed | 6 Speed |
| Final Drive: | Chain, 520 DID | Chain, X-ring | Belt drive, 152 tooth |
| Front Suspension: | 35 mm Marzocchi magnesium fork | 41 mm Fork | 46mm Telescopic forks |
| Rear Suspension: | Round section chrome-moly steel swingarm with adjustable (for preload) cantilever mono-shock, Marzocchi PVS 1 | Chrome spring twin shocks with adjustable preload | Single Shock w/ Air Adjust |
| Front Brakes: | 2 x 280 mm Discs | Single 310mm disc, 2 piston caliper, Nissen | 2x 300 mm Floating Rotor 4 piston calipers |
| Rear Brakes: | Single 260 mm disc | Single 255mm disc, 2 piston caliper, Nissen | Single 300 mm Floating Rotor 2 piston calipers |
| Front Tyre: | Slicks | 110/90 R18 Bridgestone | Dunlop® American Elite 130/60B19 61H |
| Rear Tyre: | Slicks | 170/80 R15 Bridgestone | Dunlop® Elite 3 180/60R16 80H |
| Seat Height: | 762 mm / 30.0 in | 720 mm / 28.3 in | 660 mm / 26.0 in |
| Dry Weight: | 130 kg / 286 lbs | 225 kg / 496 lbs | 349 kg / 770 lbs |