Remmi 7

General Specifications

Layout
2 idling front wheels, 1 steering and driving rear wheel
Turning radius 12m

Chassis
Separate plate spaceframe; made of carbon fibre and foam

Bodywork
Separate bodywork; made of carbon fibre

Lenght / Height / Width
280 cm / 60 cm / 60 cm

Wheelbase / Track
149 cm / 51 cm

Frontal Area / Cd
0,247 m2 / 0,0871

Weight
33 kg (without driver)

Tyres
Michelin “Eco-Marathon Radial”

Brakes
2 x hydraulic on frontwheels, 1 x hydraulic Magura MTB on rearwheel

Driveline
1-stage 1-speed chaindrive to rearwheel; centrifugal clutch on cranckshaft; dog clutch on rearwheel

Vehicle Record
2960 km/l, Shell Eco-marathon Germany 2009
3306 km/l, Pisaralla Pisimmälle Nokia 2008

Engine Specifications

Make
Selfmade prototype

Type
4-stroke petrol engine

Bore x Stroke / Volume
27,7 × 70 mm / 42 cm3

Combustion Chamber
Dual hemisphere

Valve layout
SOHC; 2 valves; roller followers

Valve timing
I.O. @ 5 deg BTDC
I.C. @ 25 deg ABDC
E.O. @ 35 deg BBDC
E.C. @ 5 deg ATDC

Compression ratio
16,8

Ignition System
ECU controlled twinspark

Sparkplugs
Twinspark, 2 plugs

Ignition Timing
ECU controlled by revs; 0 – 35 deg BTDS

Fuel Distribution
ECU controlled fuel injection with Bosh special nozzle; fuel pressure 4,8 bars

Lubrication
wet sump; ~7 ml

ECU
Hestec engine control unit by Toijalan Autosähkö. Injection and ignition controlled depending on revs(300rpm steps), inlet manifold pressure, inlet and engine temperatures