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Unread 06-13-2017, 10:06 PM #1
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Le Mans 2017

The Le Mans 24H week (2017) is already here.

Qualifying starts tomorrow and the race is this Sat/Sun.

Get your spotter guide here: http://www.spotterguides.com/portfolio/17lm/

As usual, there have been some changes to the classes this year. It's hard to catch up quickly but one of these changes is causing a few concerns (and might make things interesting) among the prototype classes. They gave the P2 cars more power so they're faster in a straight line, thus:

Speed worries at Le Mans (racecar-engineering.com)
Quote:
Jun 13, 2017

The top speeds of the LMP2 cars at the 2017 Le Mans 24 Hours are a cause for concern in LMP1

You will probably read many poorly researched and uninspired articles every June which describe Le Mans as an unremarkable town to the South of Paris. But that is a great disservice to what is actually city with a blend of the cutting edge and the medieval. Kings of England were born there, the Wright brothers flew there and today it leads the world in the design of electrical connectors and er, tractors.

Of course if you are reading this then it is probably the collection of roads between the Southern tip of the city and the villages of Mulsanne and Arnage that have your attention. The 13.629km circuit, made partially of public road and partially of bespoke race circuit attracts race engineers like flies to excrement. There is an undefined magic about the annual 24 hours race, but from a technical standpoint the real challenge today is getting a car to work on a track which mates very long flat out sections with more technical corners.

This means a real ballet of compromise between top speed and cornering and it is easy to go too far one way or the other. It is one of the most fascinating challenges in motorsport, especially given the fairly open regulations. In 2017 the hybrid cars racing in LMP1 are no longer the fastest in a straight line as they balance overall energy usage with lap time. The drivers use the lift and coast technique to best utilise the allowed energy per lap, so they are not especially fast in terms of top speed – but they get to that top speed very quickly.

Instead the LMP2 category is the one which has to balance speed vs cornering the most, with no consensus on which way is the best way to go. Notably in sector 1 at Le Mans (start line to Tertre Rouge) the LMP2 cars are quite similar in terms of pace as the LMP1 cars. This section of track is the shortest sector of the three at Le Mans and the one with the slowest average speed. This could make life very difficult for the LMP1 cars, which could well struggle to pass the nimble LMP2 machinery.
Full article here: http://www.racecar-engineering.com/b...es-at-le-mans/
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Unread 06-14-2017, 02:21 AM #2
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Steve, I'll be there this weekend and confirm the mystique of the beautiful town of Le Mans. And, maybe be able to shed first hand light on the speeds of which you speak!
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Unread 06-14-2017, 03:16 AM #3
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Safe travels, and wave at the Corvettes for me Firebro. I am jealous.
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Unread 06-14-2017, 09:53 AM #4
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Have fun Jon, safe travels!
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Unread 06-14-2017, 12:55 PM #5
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Quote:
Originally Posted by Firebro17 View Post
Steve, I'll be there this weekend and confirm the mystique of the beautiful town of Le Mans. And, maybe be able to shed first hand light on the speeds of which you speak!
Yup, I'm jealous. Have a great time and let us know how it goes.

This might be helpful. In fact, the other parts (follow link at bottom of article) might also be worth a read.
Le Mans: spectating
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Unread 06-14-2017, 01:02 PM #6
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Unread 06-14-2017, 03:09 PM #7
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Couple pics for the Ford fans.

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Unread 06-14-2017, 03:12 PM #8
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Corvette:

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But one of these things is not like the others:

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Unread 06-14-2017, 03:17 PM #9
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Factory Porsches:

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Unread 06-14-2017, 03:45 PM #10
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Of course, the inevitable question, where does one watch it -- with and without cable or satellite?

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