The Harley Davidson FLSTF/I Fat Boy is a motorcycle with a 1449 cc, 45 degree V-Twin, Twin Cam 88 engine, capable of producing 67 hp and 116.6 Nm of torque. It uses pushrod-operated overhead valves with hydraulic self-adjusting lifters and has a compression ratio of 8.9:1. It is air-cooled and has a dry sump lubrication system, along with a carburetor or 38mm throttle bore electronic sequential port fuel injection. The ignition is single-fire, non-wasted, and map-controlled spark ignition, with an electric starter. The transmission is a 5-speed with a wet 9-plate clutch, and a final belt drive. The frame is mild steel tubular, telescopic fork with beer can covers, and a hidden, horizontal-mounted, coil-over shock rear suspension. Brakes are single 292mm disc 4 piston caliper front and rear, with a D402F MT90B16 72H front tire and a D401 150/80B16 71H rear tire. It has a 32-degree rake and fork angle, with a trail of 147 mm. The dimensions are 2395.2 mm in length, a wheelbase of 1638 mm, a seat height of 645.2 mm laden and 698.5mm unladen, a ground clearance of 130 mm, and a dry weight of 310 kg/683 lbs, with a fuel capacity of 18.9 liters.
Technical specifications:
Make Model: Harley Davidson FLSTF/I Fat Boy
| Year | 1999 – 00 |
|---|---|
| Engine | Four stroke, 45 degrees V-Twin, Twin Cam 88 (R) vibration isolation-mounted Valves Pushrod-operated overhead valves; w/ hydraulic self-adjusting lifters; two valves per cylinder |
| Capacity | 1449 cc / 88.4 cu-in |
| Bore x Stroke | 95.3 x 101.6 mm |
| Cooling System | Air cooled |
| Compression Ratio | 8.9:1 |
| Lubrication | Dry sump, internally mounted, crank driven gerotor pressure and dual scavenge pump with spin on 10~Anot pressurized oil filter |
| Induction | Carburetion 40 mm constant velocity with enrichener and accelerator pump ESPFI 38 mm throttle bore electronic sequential port fuel injection |
| Ignition | Single-fire, non-wasted, map-controlled spark ignition |
| Starting | Electric |
| Max Power | 67 hp / 48.8 kW @ 5200 rpm |
| Max Torque | 116.6 Nm / 86 lb-ft @ 3500rpm |
| Clutch | Wet 9-plate |
| Transmission | 5 Speed |
| Final Drive | Belt |
| Primary Drive Ratio | Chain, 36/25 |
| Gear Ratio | 1st 10.110 2nd 6.958 3rd 4.953 4th 3.862 5th 3.150 |
| Frame | Mild steel tubular frame; rectangular section backbone; stamped, cast and forged junctions; forged fender supports; MIG welded Swingarm Mild steel, rectangular tube sections, stamped junctions, MIG welded |
| Front Suspension | 41.3 mm Telescopic forks with beer can covers |
| Front Wheel Travel | 130 mm / 5.1 in |
| Rear Suspension | Hidden, horizontal-mounted, coil-over shock |
| Rear Wheel Travel | 109 mm / 4.3 in |
| Front Brakes | Single 292mm disc 4 piston caliper |
| Rear Brakes | Single 292mm disc 4 piston caliper |
| Front Tyre | D402F MT90B16 72H |
| Rear Tyre | D401 150/80B16 71H |
| Rake | 32 degrees |
| Fork Angle | 32 degrees |
| Trail | 147 mm / 5.8 in |
| Dimensions | Length 2395.2 mm / 94.3 in |
| Wheelbase | 1638 mm / 64.5 in |
| Seat Height | Laden2 645.2 mm / 25.4 in Unladen 698.5mm / 27.5 in |
| Ground Clearance | 130 mm /. 5.1 in |
| Dry Weight | 310 kg / 683 lbs |
| Wet Weight | 324 kg / 714 lbs |
| Oil Capacity | 3.3 Litres / 3.5 qts. |
| Fuel Capacity | 18.9 Litres / 5.0 US gal |
