Very fast overall in Sprint and only hampered in the Endurance by the rain, TU Delft won overall in Class 1A
FORMULA STUDENT UK CLASS 1A
DUT Racing, one of two teams from Dutch institution TU Delft, utterly dominated Formula Student’s alternative fuel class with its first all-electric car, the DUT11. It was the second fastest car overall in the Sprint and promised to be equally fast in Endurance, until the team fell victim to the Silverstone weather. Fitted with twin AMK DT5 electric motors and lithium ion polymer batteries, the car was the lightest to finish the event, weighing in at just 178kg (GFR’s lighter Class 1 car did not finish the Endurance section). ‘At the start of the year we
really looked at the competition and tried to make a car that
scores well at all the events,’ said a team representative. ‘Moreover, we have tried to have the car designed as consistently as we can. We focus on every part. It was a great challenge to build, especially the battery pack. You easily underestimate the work that you need to put in, not only to design it but to build it as well. In the battery pack alone there are almost as many parts as in the previous combustion car.’ The monocoque is made
from carbon fibre, which was manufactured by vacuum infusion. The overall design was extremely impressive and explains why they won the Design event and had over a 180 point lead overall.
Running in the same class
but on a far smaller budget was the team from Manchester Metropolitan University. Its car came in at roughly £12,000 ($19,675), including the lithium ion phosphate batteries – some of the latest battery technology on the market today. ‘We should be looking at the equivalent torque of a BMW M3,’ said a team member. ‘We’re estimating it to be just under 250kg, which is not bad for the price really.’ Not only is their budget small, but also their team, with only 10 people, and the car was built in just six months. ‘A lot of people design a number of areas and sometimes they don’t all quite fit together. One problem was running two batteries, but that wasn’t going to last so we went back to having three, which meant altering the chassis.’ The team’s sponsors were essential to the building of this car, ‘not just for the money, but for the expertise as well.’ MMU Racing believe that the
environmentally friendly Class 1A is extremely important in the modern day motorsport world. ‘We’ve been doing the petrol cars for a while and the majority of the team are electrical engineers, so it made sense to push it that way, which is something the university seemed to be interested in.’ Like any other form of
The TU Delft car was powered by twin AMK DT5 electric motors and lithium ion polymer batteries. It was also very light, weighing in at just 178kg
motorsport, Formula Student is continually evolving to suit the demands of modern day society. As a result, for the 2012
competition Class 1 will merge with Class 1A. Not only will this highlight the importance of environmentally friendly motorsport technologies, but it will encourage students to get involved and begin designing the fuels and solutions of the future.
TECH SPEC
Class: FSAE - Formula Student class 1A
Weight: 178kg
Chassis: carbon fibre monocoque
Motors: two AMK DT5-30- 10-EOW
Performance: 55kW/ 57Nm up to 4500rpm
Accumulator: 355V, 5.7kWh, 96S3P with a modular BMS
Transmission: spur gears, single step, final drive: 6.8:1, electronic differential
Suspension: double unequal length A-arm, pull rod- actuated, vertically oriented spring and damper
Brakes: four wheel disc system, full-floating steel rotors, adjustable brake balance, AP4226 calipers
Wheels: 6 x 10in custom aluminium centre, carbon fibre shell
Tyres: 18 x 6,0-0-10 LC0 Hoosier
Length: 2628mm Width: 1406mm Height: 1064mm Wheelbase: 1540mm
September 2011 •
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