FS Austria Event Programme 2015

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HeaderHochschule EsslingenCar#, Country, E.Stall Esslingen University, TeamnameE94The E.Stall Esslingen was founded in 2012 and is he electric team of theAUS Esslingen with the Rennstall Esslingen as its sister team. We are asmall team of about 15 students located in Göppingen with a greatpassion for racecars an especially electric ones. Our new car – EVE ’15was presented to the public May 11 on a great double rollout togetherwith the combustion racecar Stallardo ’15.EVE ’15 is the result of our modular conceptgoing even further. Two different monococues– for the combustion and the electric car – outof the same tooling.In addition, the new car features a unique newspring and damper system never seen informula student before.Feel free to visit us at our pit!Wheelbase:Track front:Track rear:1600 mm1200 mm1150 mmEngine: 2x Enstroy Emrax 207Max Power: 150kW / 80kWGearbox: Student built epicyclic gearingTS Voltage: 470 VBattery Type LiCoO2Capacity 7,7 kWhWheels: Hoosier R25B 7,5x10Suspension: SLA with pushrod actuated threedamper systemElectronics: self-developed ECU and 12 otherself-developed control units56 | Formula Student Austria | Spielberg 2015Footer
Helsinki Metropolia University of Applied SciencesE98, Finland, Helsinki UAS,Metropolia MotorsportMetropolia MotorsportE98Our basic concept this year is getting out of the iron age, some partsare just not meant to be made from steel. That is even if the God ofsteel, Vulcan, told us to use it!Our frame has been made out in the cold. Lucky for us the weldingflame keeps us warm and high strength steels even tend to shimmer so bright that it scares the wolves away. EvenNjorse, the god of wind, keeps the protective gas around the weld. The side panels are made out of carbon fibre whichhas been a good way to bring down the total weight of the car.The steering and suspension is made out of steel and aluminium. You read correctly, aluminium. We have heard it’slighter than steel if used properly. The steering weighs about 1,4 kg, most of that is just the steering wheel. Suspensionarms have been downgraded to steel, we did not want to gather carbon fibre parts from the track. Even the weight isO.K. when the suspension is optimized.The powertrain should actually work this year! We use ABB inverters,which allow us to use proper vector control which should be needed ifwe are going to be successful in the competition. Industrial parts arenot even that heavy if modified enough. We use Siemens rotors andstators and the rest of the powertrain has been built around them.The accumulator container has been made out of aluminium. It is notthe lightest contruction but the Gods of carbon fibre (we are still tryingto figure out who we should pray for) has not been in our favor. TheBMS has been partly self made. We designed the voltage andtemperature measuring boards ourselves, the main BMS controller is bought. We try to make more and moreelectronics by ourself in the incoming seasons. It is cheaper and we get to learn a lot of the systems which you do notdo with bought parts!We were lucky to have some Swedish vikings trying to rob us. Their copper age axes are amagnificient raw material for the wiring harness. We have not been able to make the mosthigh end electronics for the car, but we believe in a highly reliable car with all the basicfunctions working together with very few problems.The overall design is made as simple and reliable as possible. We strongly believe that thiswill be the key for the whole season and a a successful design. Even though beliefs shouldbe kept in churches the Gods of engineering should now and then be consulted.Technical DataMotors 2 x Siemens 1FE1082 Weight Depends of the driverECU Electrobit EB 6120 Max. power Not enoughWheels Hoosier LC0 6.0/18.0-10 Dimensions 1525 WB/ 1200 / 1160 TrackSuspension Five wheels including steering wheel Frame type Some tubes plus some compositesFuel 588 little men named Volt Driver Too slowWings Two pieces plus one aeromysticaldevice under the carBest Feature Hasn’t hit the wall (yet)Spielberg 2015 | Formula Student Austria | 57
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Page 50 and 51: 71University of PittsburghPanther R
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FS Austria Event Programme 2015

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