Website under construction!
Let's build something.. //Strömmarn
Graph-Tune 1.0 - electric turbo / supercharger dot they really work ? Stay tuned and find out!
Graph-Tune 1.0 is a private project & experiment, started year 2021 and is ongoing as you read this..
In this project a 100% electric driven “Turbo” / compressor will be installed on a old veteran motorcycle. The motorcycle will be dyno-tested and the results will be shared regardless outcome.
The project will also contain a AFR (Air Fuel Ratio)-data logging solution to make it possible to connect the computer to the vehicle and log the exhaust values. Values will be visualized in a graph for further analysis, a perfect instrument for further optimization and make it possible to not guess whats the best settings is for the vehicle.
The motorcycle will also be rebuild in CaféRacer style.
This website is also one of the tasks in this project and the idea is to make a community with help of the FORUM and the BLOG, make us poeple share knowledge about all kinds of "e-boosters" and AFR-data logging solutions.
Let´s share knowledge and build together.. join our FORUM
Follow the BLOG!
What will the results be.. stay tuned and find out!
(electric compressor / "Turbo")
Lifting power - 10-30% increase in engine power
Economical fuel - fuel consumption reduced 3-10%
Environmental quality - LCD, HC, NOXJ reduced by 30% or less
Protects the engine - Reduces engine wear due to deposits
Operating voltage: 12V-16V test value
Drive current: 26A measured value
Shutdown voltage: 0.8V throttle practical value
Full-speed voltage: 0.9V-2.2V use value
Linear drive: 0.9V-2.5V measured value
Speed range: 6800RPM-32000RPM
Wind speed range: 5m / s-86m / s measured value
Wind pressure range: 0.05kg / cm-0.2kg / cm with turbine test value
Adjustment mode: Throttle voltage signal is activated
Fan power: up to 240 watts
AFR-solution (Air Fuel Ratio)
More info is coming.. not a finished draft, concept is under development!
Test object (CaféRacer)
Suzuki GS 450cc, 1981.
Engine type:Air-cooled inline-2 4-stroke, DOHC, 4 valves
Cylinder displacement:448 cc
Bore x stroke:71,0 x 56,6 mm (2.795 x 2.228 in.)
Compression ratio:9,0 :1
Carburetor:Mikuni 34 mm x 2
Maximum power output:42,3 hp (31,1 kW)/ 9.000 rpm
Maximum torque:36,6 Nm (3,7 kg-m)/ 7.500 rpm
Starting system:Electric starter
Generator:Three-phase A.C. generator
Clutch:Multiple plate wet
Wheelbase:1 385 mm (54.5 in)
Dry weight:175 kg (385 lbs) (abt 190 kg/418 lbs wet)
Frame:Tubural steel craddle
Front suspension:Oil-damped anti-dive telescope
Rear suspension:Swinging arm, coil spring, oil damped,
5-way adjustable spring preload
Front fork stroke:140 mm (5.52 in.)
Rear wheel travel:100 mm (3.94 in.)
Front brake:Single disc
Rear brake:Drum brake
Weight/power ratio (kg/hp):4,2