2002 Rinspeed Presto Concept


2002 Rinspeed Presto Concept

2002 Rinspeed Presto Concept

The Rinspeed Presto transforms itself in a few seconds from a two-seater roadster into a 3.7-meter long four-seater with plenty of room for the rear-seat passengers. The additional space can also be used as a pick-up bed for cargo when the rear-seat backrests are folded down.

This almost magical transformation is made possible by a centrally located electric motor, which stretches the vehicle with the help of two mechanical screw-and-nut gears by exactly 746 millimeters to its full extended length of 3.74 meters. The longitudinal members run on low-friction precision rollers and disappear like a drawer in the rear of the floor pan. Despite its variable length the engineers succeeded in designing the adjustable Presto floor pan with the torsional rigidity necessary for a roadster. To ensure absolute operational safety the extension mechanism also features self-locking safety latches.

A four-cylinder, 1.7-liter common-rail turbo diesel engine in dual-fuel configuration, based on a Mercedes-Benz engine, provides future-oriented and highly environmentally friendly propulsion. The engine runs on a mixture of natural gas and Diesel fuel at a 40 to 60 ratio. Natural gas is a very clean-burning fuel, which consists almost entirely of methane with sulfur content near zero. However, since a Diesel engine has no spark plug to act as an ignition source, operation on natural gas alone is technically impossible.

In Detail

submitted byRichard Owen
engineDuel Fuwl, MB 170, Inline-4
aspirationTurbocharged
valvetrainDOHC, 4 Valves per Cyl
displacement1689 cc / 103.1 in³
bore80 mm / 3.15 in
stroke84 mm / 3.31 in
power89.5 kw / 120.0 bhp @ 4200 rpm
specific output71.05 bhp per litre
bhp/weightbhp per tonne
torque224 nm / 165.2 ft lbs
body / frameComposite over Steel Chassis
driven wheelsFWD
front tires205/50-17
rear tires235/45-17
front brakesDiscs
f brake sizex 276 mm / x 10.9 in
rear brakesDiscs
r brake sizex 258 mm / x 10.2 in
curb weight865 kg / 1907 lbs
wheelbase1750 mm / 68.9 in
front track1507 mm / 59.3 in
rear track1580 mm / 62.2 in
length2996 mm / 118.0 in
width1847 mm / 72.7 in
height1375 mm / 54.1 in
transmission5-Speed Automatic
gear ratios:1
top speed~180 kph / 111.8 mph
0 – 60 mph~10.4 seconds