The Motus MST Prototype is a 2011 motorcycle powered by a four-stroke, 90 o V4 engine with a capacity of 1,645 cc. The engine is constructed of a 356-T6 cast aluminum block and heads, forged steel crank, cam, rods, and aluminum pistons with a linerless Nikasil bore. The bike has a firing order of 1-4-3-2 and a compression ratio of 11.5:1. It has a maximum power output of 120 kW / 161 hp at 7,800 rpm and a maximum torque of 165 Nm / 122 lb-ft at 4,500 rpm. The bike features a wet, multi-plate clutch and a 6-speed sequential gearbox with a chain drive. The chassis is a chromoly tubular trellis spaceframe with the engine as a stressed member. It has a rake of 26 o and a trail of 108 mm /4.25 in. The bike’s front suspension is a 43mm inverted telescopic fork that is fully adjustable, and the rear suspension is a twin spar chromoly swingarm with a fully adjustable pushrod monoshock with remote preload adjustment. The front brakes are 2 x 320 mm floating discs with 4-piston monoblock radial calipers, and the rear brake is a single disc with a 2-piston caliper. The front and rear wheels are 3.5 x 17 and 6.0 x 17, respectively, with Michelin Road Pilot 2CT tires. The bike has a seat height of 787mm / 31 in, a dry weight of 227 kg / 500 lbs, and a fuel capacity of 22.7 liters / 6.0 US gal / 5.0 Imp gal.
Technical specifications:
Make Model: Motus MST Prototype
| Year | 2011 |
|---|---|
| Engine | Four stroke, 90 o V4, dual OHV, pushrod, chain-driven single cam; hydraulic lifters |
| Capacity | 1645 cc / 100 cu-in |
| Materials | 356-T6 cast aluminum block and heads; forged steel crank, cam, rods; forged aluminum pistons; linerless Nikasil bore |
| Firing order | 1 — 4 — 3 — 2 |
| Bore x Stroke | 86.5 mm x 70.0 mm / 3.41in x 2.75 in |
| Valves | Intake ~A44.5mm (1.75in); Exhaust ~A36.8mm (1.45in); stainless steel |
| Cooling System | Liquid cooled |
| Compression Ratio | 11.5:1 |
| Ignition Sequence | TDC — 345 o — 435 o — 630 o |
| Ignition | Electronic CDI |
| Starting | Electric |
| Max Power | 120 kW / 161 hp @ 7800rpm |
| Max Torque | 165 Nm / 16.7 kgf-m / 122 lb-ft @ 4500rpm |
| Clutch | Wet, multi-plate |
| Transmission | 6-Speed sequential gearbox; unit construction |
| Final Drive | Chain |
| Chassis | Chromoly tubular trellis spaceframe; engine as stressed member |
| Rake | 26 o |
| Trail | 108 mm /4.25 in |
| Front Suspension | 43mm inverted telescopic forks, fully adjustable |
| Front Wheel Travel | 120 mm / 4.7 in |
| Rear Suspension | Twin spar chromoly swingarm; fully adjustable pushrod monoshock with remote preload adjustment |
| Rear Wheel Travel | 120 mm / 4.7 in |
| Front Brakes | 2 x 320 mm floating discs, 4-piston monoblock radial calipers |
| Rear Brakes | Single disc, 2-piston caliper |
| Front Wheels | 3.5 x 17, aluminium; Michelin Road Pilot 2CT tires |
| Rear Wheels | 6.0 x 17, aluminum; Michelin Road Pilot 2CT tires |
| Seat Height | 787mm / 31 in |
| Dry Weight | 227 kg / 500 lbs |
| Fuel Capacity | 22.7 Litres / 6.0 US gal / 5.0 Imp gal |