Remmi 8

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Remmi 8

General Specifications

Layout
Two steering front wheels, one driving rear wheel.
Turning radius 8 m.

Chassis & bodywork
Self carrying carbon fiber monocoque.

Length / Height / Width
280 cm / 60 cm / 60 cm

Wheelbase / Track
120 cm / 50 cm

Weight
33 kg (without driver)

Tyres
Michelin “Eco-Marathon Radial”

Brakes
2 x hydraulic disc-brakes on front wheels, 1 x hydraulic Magura MTB on rear wheel

Driveline
1-stage 1-speed chain drive to rear wheel; centrifugal clutch on crankshaft; dog clutch on rear wheel

Vehicle Record
1972 km/l, Shell Eco-marathon Rotterdam 2015

Engine Specifications

Make
Self made 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 Bosch special nozzle; fuel pressure 4,8 bars

Lubrication
wet sump; ~7 ml

ECU
FPGA board based, self made.

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

General Specifications

Layout
2 steering frontwheels, 1 driving rearwheel

Chassis
Separate plate spaceframe; made of carbon fibre and foam

Bodywork
Separate bodywork; made of carbon fibre

Lenght / Height / Width
325 cm / 60 cm / 72 cm

Wheelbase / Track
160 cm / 55 cm

Frontal Area / Cd / Cd x V2/3
0.38 m2 / 0.102 / 0.05 (measured with 1/4 model, free flow)

Weight
~38 kg (without driver)

Tyres
Michelin “Eco-Marathon Radial”

Brakes
2 x hydraulic Magura MTB on rearwheel

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

Vehicle Record
3036 km/l (0.0329 l/100km) ; 8576 mpg (U.K.) ; Nokia (FIN) 2007

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

General Specifications

Layout
2 steering frontwheels, 1 driving rearwheel

Chassis
Separate plate spaceframe; made of carbon fibre and foam

Bodywork
Separate bodywork; made of carbon fibre

Lenght / Height / Width
325 cm / 60 cm / 72 cm

Wheelbase / Track
160 cm / 55 cm

Frontal Area / Cd / Cd x V2/3
0.38 m2 / 0.102 / 0.05 (measured with 1/4 model, free flow)

Weight
~40 kg (without driver)

Tyres
Michelin “Eco-Marathon Special”, size 44-406 (20”) or Michelin “Eco-Marathon Radial”

Brakes
2 x hydraulic Magura MTB on rearwheel

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

Vehicle Record
2485 km/l (0.0402 l/100km) ; 7020 mpg (U.K.) ; Nokia (FIN) 2002

Engine Specifications

Make
Selfmade prototype

Type
4-stroke petrol engine

Bore x Stroke / Volume
39 × 55 mm / 66 cm3

Combustion Chamber
Hemisphere

Valve layout
DOHC; 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
17,3

Ignition System
ECU controlled twinspark

Sparkplugs
2 x Bosch UR4AS

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; ~10 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

Output
max. power: ~970 W @ 4000 rpm
max. torque: ~2.8 Nm @ 2050 rpm

General Specifications

Layout
2 steering frontwheels, 1 driving rearwheel

Chassis
Separate plate spaceframe; made of carbon fibre and foam. Aluminium rearframe with suspension

Bodywork
Separate bodywork; made of carbon fibre

Lenght / Height / Width
325 cm / 60 cm / 72 cm

Wheelbase / Track
160 cm / 55 cm

Frontal Area / Cd / Cd x V2/3
0.38 m2 / 0.102 / 0.05 (measured with 1/4 model, free flow)

Weight
~47 kg (without driver)

Tyres
Michelin “Eco-Marathon Special”, size 44-406 (20”) or Michelin “Eco-Marathon Radial”

Brakes
2 x hydraulic Magura Julie disk brakes on rearwheel

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

Vehicle Record
2136 km/l (0.0468 l/100km) ; 6036 mpg (U.K.) ; Nokia (FIN) 2001

Engine Specifications

Make
Selfmade prototype

Type
4-stroke petrol engine

Bore x Stroke / Volume
39 × 55 mm / 66 cm3

Combustion Chamber
Hemisphere

Valve layout
DOHC; 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
17,3

Ignition System
ECU controlled twinspark

Sparkplugs
2 x Bosch UR4AS

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; ~10 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

Output
max. power: ~970 W @ 4000 rpm
max. torque: ~2.8 Nm @ 2050 rpm

General Specifications

Layout
2 steering frontwheels, 1 driving rearwheel

Bodywork
Selfcarrying; made of carbon, aramid and glass fibres, PVC-foam and Nomex-honeycomb

Lenght / Height
320 cm / 60 cm

Width ( body / total )
44 cm / 72 cm

Wheelbase / Track
174 cm / 61 cm

Frontal Area / Cd / Cd x V2/3
0.26 m2 / 0.14 / 0.09 (Cd & V measured without front wheels)

Weight
~38 kg (without driver)

Tyres
Michelin “Eco-Marathon Special”, size 44-406 (20”)

Brakes
2 x hydraulic Magura MTB on rearwheel

Driveline
1-stage 1-speed chaindrive to rearwheel; manual clutch on cranckshaft; freewheel (1-way bearing) on rearwheel; driveratio between 8.7 – 10.2

Vehicle Record
1689 km/l (0.0592 l/100km) ; 4771 mpg (U.K.) ; Nokia (FIN) 1998

Engine Specifications

Make
Selfmade prototype

Type
4-stroke petrol engine

Bore x Stroke / Volume
35 × 43 mm / 41 cm3

Combustion Chamber
Hemisphere

Valve layout
DOHC; 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
15,0

Ignition System
ECU controlled twinspark

Sparkplugs
2 x Bosch UR4AS

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; ~15 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

Output
max. power: ~840 W @ 4000 rpm
max. torque: ~2.5 Nm @ 2200 rpm

General Specifications

Layout
2 steering frontwheels, 1 driving rearwheel

Bodywork
Selfcarrying; made of glass, aramid and carbon fibres, balsa and PVC-foam

Lenght / Height
320 cm / 60 cm

Width ( body / total )
44 cm / 72 cm

Wheelbase / Track
170 cm / 61 cm

Frontal Area / Cd / Cd x V2/3
0.26 m2 / 0.14 / 0.09 (Cd & V measured without front wheels)

Weight
~44 kg (without driver)

Tyres
Michelin “Eco-Marathon Special”, size 44-406 (20”)

Brakes
2 x hydraulic Magura MTB on rearwheel

Driveline
2-stage 1-speed chaindrive to rearwheel; selfmade hydraulic manual clutch on mid-axle; freewheel (1-way bearing) on rearwheel; driveratio between 6.4 – 7.5

Vehicle Record
1940 km/l (0.0515 l/100km) ; 5481 mpg (U.K.) ; Nokia (FIN) 1998

Engine Specifications

Make
Selfmade prototype

Type
4-stroke petrol engine

Bore x Stroke / Volume
39 × 55 mm / 66 cm3

Combustion Chamber
Hemisphere

Valve layout
SOHC; 2 valves; roller followers

Valve timing
I.O. @ 5 deg ATDC
I.C. @ 165 deg ATDC
E.O. @ 35 deg BBDC
E.C. @ 5 deg ATDC

Compression ratio
15,0

Ignition System
ECU controlled

Sparkplugs
1 x Bosch UR4AS

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; ~20 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

Output
max. power: ~1100 W @ 4000 rpm
max. torque: ~3.1 Nm @ 2050 rpm

Picture from Helsinki, Finland, 1985

Remmi IV in a Nutshell

Aluminium tube chassis with glassfibre bodywork
66cc SOHC engine of Remmi-Team design
Fuel injection, selfmade electronics
Power ~1000W @ 4000rpm
Weight ~50kg
Best result 758 km/l (2141 mpg), Silverstone, 1984
In use 1984 – 1986

Picture from Holland, 1983
Petri “Lede” LESKINEN (left) and Timo HONKA (right)

Remmi IIIb in a Nutshell

Aluminium tube chassis with glassfibre bodywork
66cc SOHC engine of Remmi-Team design
Fuel injection, electronics modified from Bosch
Weight ~50kg
Best result 704 km/l (1988 mpg), Silverstone, 1983
In use 1983

Picture from Silverstone, England, 1982
Driver: Sirpa LAUTTIA

Remmi IIIa in a Nutshell

Aluminium tube chassis with glassfibre bodywork
66cc SOHC engine of Remmi-Team design
Carburetor
Weight ~50kg
Best result 334 km/l (943 mpg), Hockenheim, 1982
In use 1982

Remmi II in a Nutshell

Framework made of aluminium tubes
Glassfibre bodywork
A prone head-first driving position
22cc DOHC engine of Remmi-Team design
Carburetor
Twin spark ignition with adjustable delay between plugs
Carburetor
Power ~400W
An 8 kg flywheel for storing energy, separated from the engine with a clutch and packed in a helium-container (removed after season 1978)
Weight ~60kg
Best result 546 km/l (1542 mpg), Hockenheim, Germany, 1979 (avg.speed 15 km/h)
413 km/l (1167 mpg), Silverstone, England, 1980 (avg.speed 25 km/h)
In use 1978-1981

Pekka HARJU, Jorma TAIJONLAHTI, Kirsti RINTAMÄKI, Veikko RINTAMÄKI

Remmi I in a Nutshell

Chassis made of two bicycles
50cc modified 4-stroke engine from DEMM-moped
Weight ~56 kg
Best result 299 km/l (844 mpg) (avg.speed 15 km/h)
First competition Pisaralla Pisimmälle 1976
In use 1976-1978
Winner of the historic class in Pisaralla Pisimmälle 1995

General Specifications

Layout
2 steering frontwheels, 1 driving + 1 idle rearwheel

Chassis
Separate plate spaceframe; made of carbon fibre and foam

Bodywork
Separate bodywork; made of glass fibre

Lenght / Height / Width
240 cm / 110 cm / 130 cm

Wheelbase / Track
145 cm / 100 cm

Frontal Area / Cd / Cd x V2/3
~0.9 m2 / ~0.18

Weight
~80 kg (without driver)

Tyres
Michelin “Eco-Marathon Special”, size 44-406 (20”)

Brakes
4-wheel hydraulic disc brakes

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

Vehicle Record
515 km/l (0.1940 l/100km) ; 1456 mpg (U.K.) ; Nokia (FIN) 2005

Engine Specifications

Make
Selfmade prototype

Type
4-stroke petrol engine

Bore x Stroke / Volume
39 × 55 mm / 66 cm3

Combustion Chamber
Hemisphere

Valve layout
DOHC; 2 valves; roller followers

Valve timing
I.O. @ 6 deg BTDC
I.C. @ 23 deg ABDC
E.O. @ 32 deg BBDC
E.C. @ 4 deg ATDC

Compression ratio
15,0

Ignition System
ECU controlled twinspark

Sparkplugs
2 x Bosch UR4AS

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; ~10 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

Output
max. power: ~950 W @ 4000 rpm
max. torque: ~2.9 Nm @ 2000 rpm