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W.I.P. Circuit Mont-Tremblant (St-Jovite) 1969

Discussion in 'Tracks' started by Patrice COte, Feb 12, 2018.

  1. Patrice COte

    Patrice COte New Member

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    Since I finally have something nice to show, I’m extremely happy to announce my track project: Le Circuit Mont-Tremblant (St-Jovite) 1969 in Canada. It has been an obsession of mine to get this track done properly with the narrow, dangerous, and very bumpy original layout where nearly every corner is blind. I have been at it for years (on and off) collecting historical pictures (must be close to 1000!), videos, going to see races there and take reference pictures. After several unsuccessful attempts various software, I think this is finally the good one (got to learn 3D modelling the proper way with Blender). Getting to learn everything needed is complex and time consuming, but thanks to the forum resources here at ACM (and a lot of motivation!), I’m finally there.

    Getting (at last!) a high resolution aerial picture from the 70’ got me back at it this time (no lidar available yet, not until 2019 I’m told). Picture below is not full res ;-)

    1975 aerien Circuit mont-tremblant Infrarouge - mini.png


    Background information

    The track was a huge success in 60’s and nearly every big series made a stop there. So just to name a few :

    CanAm ‘66, ’67, ’69, ’70, ’71, ’77, .78

    Formula 1 ‘68 and ‘70

    SCCA Trans-Am, ’68, ’69, ’70, ’71, ’77, ‘78

    F5000 ’69, ‘70

    The late 60’s was really the golden era not only for the high profile races but also popularity. Every race weekend was one giant outdoors party with huge crowds. Hopefully I can bring back some of that feel to the simracing world.

    The track phased out of top level racing in the 70’s due to very legitimate safety concerns, very bad condition of tarmac, oil crisis, inadequate pit area and the long distance from Montreal. The opening of the Ile Notre-Dame Circuit in fall of 1978 (to be renamed Gilles Villeneuve) was the final blow. However, the Circuit Mont-Tremblant maintained a high reputation amongst drivers who loved its tricky corners and wild elevation change. There was still a lot memorable racing in the 80’s with Porsche Cup and other national series, at which time (as a teen) it really caught my imagination.

    The 2000-2001 rebuild by Laurence Stroll saved the track from demise and brought it back to modern standards. There were changes made, as little as possible, to make it a lot safer. They did an amazing job, still I can’t help thinking some of the wild and raw landscape got diluted along the way, I hope to recapture it with this virtual version.

    This is my first track, please be patient, I'm aiming for quality here, it should be worth it.
    Here's a couple of shots of my first lap.

    Screenshot_ks_lotus_25_mt-tremblant_69_11-2-118-23-35-11.jpg

    Screenshot_ks_lotus_25_mt-tremblant_69_11-2-118-23-36-15.jpg
     
  2. Johnr777

    Johnr777 Active Member

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    Really cool project! :)

    I did a quick google search and yeah, couldnt find lidar data for that region... I dont speak french, so my search was very limited...

    How about GPS? if the track is still active, im sure someone would've posted a trackmate file or similar, or you could map it with your phone if you are in the region.
     
  3. Patrice COte

    Patrice COte New Member

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    I have been in contact with the Natural Ressource Department and they plan to make a LIDAR scan in 2018 but the data will only be availble somewhere in 2019 (and will cost$$). Last year I had put this project on hold in hope the LIDAR would be available sooner. I got fed up with waiting, got to work and I don't regret it!
    I'm surprised by the amount of detail that can be extracted from pictures (camber and elevation), it's very tedious but I feel I know every inch of the track now. I'm starting to have a feel of what's good or not even before I compare with the ref pictures.

    I do have plenty of DEM models (3 different souce), so no worries for the surrounding hills they will be there, you should even be able to see the ski slopes in the distance.

    I found a GPS recording, but the data is really bad, there's a 5m vertical offset after a lap. Much less accurate that DEM + eyeball.
     
    Last edited: Feb 12, 2018
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  4. luchian

    luchian Administrator ACM Racing Team ACM Club Driver

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    Initially I thought the photo is a lidar render :). I don't know this track, never heard of it but the layout seems interesting. As I can see from your shots it also seem to have some very pronounced elevations. Eager to see more.
     
  5. Patrice COte

    Patrice COte New Member

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    Yeah, it's a real roller coaster built on very steep terrain. Easily in the top 5 north american track (IMO, of course I'm biased!). There's a lot in common with the other amazing tracks built in the late 50's up to mid 60's such as Mosport, Bridgehampton, Westwood, Mid-Ohio. etc.. It has been compared to the Nordschleife by M.Schumacher (not sure he drove the old or the 'new' track).

    Here's a couple of shots showing the mad elevations. Note that the Lola T70 spyders (canam '66) were taking off over the hump on the back straight causing accidents. Henri Pescarolo ( F1 race for Matra) said the cars were taking off at 2 places. It's a blast with any car and a proper driving challenge.

    1970 - F1 HD.jpg
    197x_T2-T3.jpg

    1970 F1 virage 1.jpg

    MT-Tremblant - 1977 2 .jpg
    1968 namerrow_f1.png 1970_kink.jpg
    1970 F1 GP 10 bout de la ligne droite.jpg
     
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  6. Anthony NR

    Anthony NR New Member

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    I actually live in Mont-Tremblant, when I was a kid I was going there once a year with my father to see races (I still got ad-posters from 2002). I would love to play on this circuit, as I can't go on it yet, not until I get a race car or have enough money to rent one/take classes (I'm still a student...). If you need any help I'm a quick learner and would love to spend my spart time doing something like this.
    Bonne continuation, j'espère voir ce projet aboutir un jour ! ;)
     
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  7. mantasisg

    mantasisg Member

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    I am very interested in this track, can't wait to see how it will go. Good luck with it :)

    I see you have only road now, you could extrude edges for a grass, that would make it much easier to join it to the terrain in future, also it would allow you to easily shrinkwrap transitional tarmac-grass elements in future and save you lots of time. Eventually if LiDAR will be available one day, you should be able to rather easily addapt it to LiDAR, unless I can't think of something what could make it difficult now...

    What an awesome circuit !
     
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  8. Patrice COte

    Patrice COte New Member

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    Don't worry, road edges transition mesh and grass already extruded all around (the offset edge addon for Blender is my best friend, along with un-subdvide ). Good to know it will be easy to retro fit the Lidar when available. The first images were "victory shots" from finally getting my first export to work in-game. It's really a satisfying feeling to drive your own track, I'm finally getting why it's kidda "worth" it to spend unhealthy amount of time to work on track mods.

    I'm currently putting lots of time testing and adjusting so the road geometry is right (and having way too much fun.... ;)), down to tweaking a few complex spots. I'll have a lot more to show shortly, and certainly some questions about terrain texturing.
     
    Last edited: Feb 22, 2018 at 5:15 PM
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  9. mantasisg

    mantasisg Member

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    I just wrote a big post in official AC forrums about terrain texturing/multilayerfresnel shader...

    I might as well, improve that post later and post here. I think I have rather good understanding of that subject, though really haven't mastered it.