2015-04-20- start of series: part presentations

Together with the presentation of our vehicle, its appearance was shown off, and the inner workings became transparent. We’d now like to reveal selected components and technical details.

 

Swing arm eLi15

The swing arm is the rear axle’s and motor’s load-carrying component and inherently so a crucial component of the rear axle assembly. It is connected to the body in three points, one being a connection to the rear partition via bent sheet metal, the two other points being screws connected to monocoque side aluminum inserts.Hinterrad-Aufhaengung

Rear wheel bearing

The axle is inserted into the half domes at the bottom and then locked in place through the upper ones. The axial fixation is realized through fitted discs on the insides of the arms.

The positioning of the component within the vehicle is made possible through rotation around a fitted bolt. Guided by the slotted holes, the axle can be adapted to the vehicles’ center line.

To guarantee a possible adaptation of the motor-positioning, a guiding flute is integrated. The motor’s axle and the rear wheel’s axle being parallel, is essential for a high level of efficiency. The fine tuning of the chain’s tension – also important to maintain a high level of efficiency – is realized within the motor’s bearing.

Further additional elements are the rear brake system and a bracket for the RPM-sensor. Extra space and appropriate angles for screwing were considered.

Execution

The most important aspect regarding the construction and building of the swing arm was a lightweight structure, which lead to an aluminum execution. On top of that, the wall thickness has been reduced to a minimum. Only areas in which e.g. screws are placed, deviate. The C-Profile used for the swing arms had proven to be a suitable one for our need for a high stiffness whilst maintaining a low weight. The component’s strength was confirmed through simulation and the following tests with the actual component.

Challenges

Besides the complex mounting relative to the machine, the thin walls causing an oscillation was a challenge during manufacturing.

2015-04-19: Information event

We would like to invite all students that are interested in our project to this semesters information event. We will talk about our project, the organisation and current positions in the team.

Meet us at:
Wednesday, April 22nd at 18:30
in MW 1050 on the Campus Garching, Maschinenwesen (Mechanical Engineering Building).

Or send us an e-mail if you are interested: info.eco@tufast.de

We are looking forward to meet you!

2015-03-24 – RollOut of eLi15

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What a great evening!
eLi15 elegantly hovered through the hall of the machanical engineering department for it’s rollout.

We were able to present a reliable and running eLi15 and could impress our sponsors, friends and family! We are so thankful for everyone who attended our event.

Another hightlight was the short fim “Endspurt” (from Schluder Film Produktion), which we will publish on this page soon.

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It was great to see so many people interested in our team and supporting us so well.

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With eLi15 being official, there is still a lot of work to do until the vehicle is ready for competition. Many screws may be adjusted until it is in a perfectly efficient state. For the team, this means testing, testing and even more testing.

The first competition the Educ Eco in Toulouse will be the first time to challenge with other teams and it is coming closer day by day.

Find more pictures of the rollout under this link.

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2015-03-20: Motivation and Teambuilding

4 days before eLi15’s Roll-Out fearless Ecos went karting and wanted to know who is the best.

Beside, it helped us motivate ourselves for the last hours until the Roll-Out Event.

Congratulations to our chassis team leader Helge who emerged as the winner of the 40 laps race.

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2015-03-06: Announcement of the RollOut of eLi15

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Just a few more weeks until our new vehicle eLi15 is ready to be presented to the public!

As every year, we prepare an event to celebrate the RollOut of our new vehicle. After this event, we have a few weeks to optimize and test eLi15 until we can finally take part in the competitions!

The event will take place on March 24 2015, 18:00 in the Building of Mechanical Engineering of TU Munich in Garching.

We are looking forward to welcome many of our sponsors at the Roll-Out event!

2015-02-16 – eLi15’s successful inital rolling tests

The proof of pudding is in the eating – that was the right reason to start testing our eLi15 for the season 2015 last week after our weekly teammeeting. What has been just been a CAD model a few weeks ago, is now able to stand on it’s own wheels and is due to be optimized during the coming weeks.

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Our validation plan requires weekly testing and impoving the car to ensure that the car and the new driver, Julia, who will steer the car for the first time this year, are ready for the competitions.

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To sum up the first test in one single word: successful! The new steering concept has shown up to be more efficient/ direct than the seasons before. Also the new monocoque has shown a reduction in mass.

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We are just a few points on the checklist away from presenting our car at the Roll-Out Event on March 26 2015 in front our supporters.

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We hope to successfully continue the testing sessions every week which will lead to the official presentation of eLi15 at the Roll-Out event to celebrate and kick-start the 2015 season of competitions.